/************************************************************************* ************************************************************************** ** M E G A S Q U I R T II - 2 0 0 4 - V1.000 ** ** (C) 2003 - B. A. Bowling And A. C. Grippo ** ** This header must appear on all derivatives of this code. ** *************************************************************************** **************************************************************************/ /************************************************************************* ************************************************************************** ** GCC Port ** ** (C) 2004,2005 - Philip L Johnson ** ** This header must appear on all derivatives of this code. ** *************************************************************************** **************************************************************************/ /*------------------------ Version 1.000 This version has all the basic capabilities of MS, but much higher precision - in the usec range. It adds larger tuning tables (12x12), WBO2, IAC, dual tables, and ignition control which assumes 1 coil and a mechanical distributor to distribute spark or EDIS for multicoil wasted spark. Version 1.100 Made serial comms more robust: added one word read, write + verify commands, write to ram inhibit when overrun detection, receiver timeout check. Version 1.200 Fixed various problems with trigger offsets ATDC (charge time can occur after input capture at very low rpms and other related ignition timing problems.) Version 1.300 Changed tps, tpsdot units to % x 10; added accel tailoff algorithm. Version 1.310 Added IAC scale factor to extend range of IAC steps. Version 1.340 Fixed bug in masking of TimerIn interrupts for dt/2. -----------------------*/ #include "hcs12def.h" /* common defines and macros */ #include "flash.h" /* flashburner defines, structures */ #include #ifdef GCC_BUILD #define EEPROM_ATTR __attribute__ ((section (".eeprom"))) #define INTERRUPT #define ENABLE_INTERRUPTS __asm__ __volatile__ ("cli"); #define DISABLE_INTERRUPTS __asm__ __volatile__ ("sei"); void ISR_Ign_TimerIn(void) __attribute__((interrupt)); void ISR_Ign_TimerOut(void) __attribute__((interrupt)); void ISR_Inj1_TimerOut(void) __attribute__((interrupt)); void ISR_Inj2_TimerOut(void) __attribute__((interrupt)); void ISR_TimerOverflow(void) __attribute__((interrupt)); void ISR_Timer_Clock(void) __attribute__((interrupt)); void ISR_SCI_Comm(void) __attribute__((interrupt)); #else #define EEPROM_ATTR #define INTERRUPT interrupt #define ENABLE_INTERRUPTS asm cli; #define DISABLE_INTERRUPTS asm sei; #pragma CODE_SEG NON_BANKED /* Interrupt section for this module. Placement will be in NON_BANKED area. */ extern void near _Startup(void); /* Startup routine */ interrupt void UnimplementedISR(void); interrupt void ISR_Ign_TimerIn(void); interrupt void ISR_Ign_TimerOut(void); interrupt void ISR_Inj1_TimerOut(void); interrupt void ISR_Inj2_TimerOut(void); interrupt void ISR_TimerOverflow(void); interrupt void ISR_Timer_Clock(void); interrupt void ISR_SCI_Comm(void); typedef void (*near tIsrFunc)(void); const tIsrFunc _vect[] @0xFF80 = { /* Interrupt table */ UnimplementedISR, /* vector 63 */ UnimplementedISR, /* vector 62 */ UnimplementedISR, /* vector 61 */ UnimplementedISR, /* vector 60 */ UnimplementedISR, /* vector 59 */ UnimplementedISR, /* vector 58 */ UnimplementedISR, /* vector 57 */ UnimplementedISR, /* vector 56 */ UnimplementedISR, /* vector 55 */ UnimplementedISR, /* vector 54 */ UnimplementedISR, /* vector 53 */ UnimplementedISR, /* vector 52 */ UnimplementedISR, /* vector 51 */ UnimplementedISR, /* vector 50 */ UnimplementedISR, /* vector 49 */ UnimplementedISR, /* vector 48 */ UnimplementedISR, /* vector 47 */ UnimplementedISR, /* vector 46 */ UnimplementedISR, /* vector 45 */ UnimplementedISR, /* vector 44 */ UnimplementedISR, /* vector 43 */ UnimplementedISR, /* vector 42 */ UnimplementedISR, /* vector 41 */ UnimplementedISR, /* vector 40 */ UnimplementedISR, /* vector 39 */ UnimplementedISR, /* vector 38 */ UnimplementedISR, /* vector 37 */ UnimplementedISR, /* vector 36 */ UnimplementedISR, /* vector 35 */ UnimplementedISR, /* vector 34 */ UnimplementedISR, /* vector 33 */ UnimplementedISR, /* vector 32 */ UnimplementedISR, /* vector 31 */ UnimplementedISR, /* vector 30 */ UnimplementedISR, /* vector 29 */ UnimplementedISR, /* vector 28 */ UnimplementedISR, /* vector 27 */ UnimplementedISR, /* vector 26 */ UnimplementedISR, /* vector 25 */ UnimplementedISR, /* vector 24 */ UnimplementedISR, /* vector 23 */ UnimplementedISR, /* vector 22 */ UnimplementedISR, /* vector 21 */ ISR_SCI_Comm, /* vector 20 */ UnimplementedISR, /* vector 19 */ UnimplementedISR, /* vector 18 */ UnimplementedISR, /* vector 17 */ ISR_TimerOverflow, /* vector 16 */ UnimplementedISR, /* vector 15 */ UnimplementedISR, /* vector 14 */ ISR_Ign_TimerOut, /* vector 13 */ UnimplementedISR, /* vector 12 */ ISR_Inj2_TimerOut, /* vector 11 */ UnimplementedISR, /* vector 10 */ ISR_Inj1_TimerOut, /* vector 09 */ ISR_Ign_TimerIn, /* vector 08 */ ISR_Timer_Clock, /* vector 07 */ UnimplementedISR, /* vector 06 */ UnimplementedISR, /* vector 05 */ UnimplementedISR, /* vector 04 */ UnimplementedISR, /* vector 03 */ UnimplementedISR, /* vector 02 */ UnimplementedISR, /* vector 01 */ _Startup /* Reset vector */ }; #pragma CODE_SEG DEFAULT #endif #include "cltfactor.inc" #include "matfactor.inc" #include "egofactor.inc" #define NO_TBLES 3 #define NO_FMAPS 12 #define NO_SMAPS 12 #define NO_FRPMS 12 #define NO_SRPMS 12 #define NO_INJ 2 #define NO_TEMPS 10 #define NO_TPS_DOTS 4 #define NO_MAP_DOTS 4 #define CRANK_RPM 300 #define NPORT 2 #define NO_COILCHG_PTS 5 // User inputs - 1 set in flash, 1 in ram typedef struct { unsigned char no_cyl,no_skip_pulses, // skip >= n pulses at startup ICIgnOption, // Bit 0: Input capture: 0 = falling edge, 1 rising // Bit 1: 1= trigger return mode in cranking; for this // mode, set bit 0 to normal edge, then opp.edge used in cranking. // trigger return not applicable to EDIS // Bits 2-3: spare // Bits 4-7: 0 = standard - charge coil, spark // 1 = Ford EDIS option // 2 = EDIS with multispark spkout_hi_lo, // Ign Output compare: 0 = spark low (gnd) max_coil_dur,max_spk_dur,DurAcc; // ms x 10 char deltV_table[NO_COILCHG_PTS],deltDur_table[NO_COILCHG_PTS], // Vx10,msx10 RevLimOption, // 0=none, 1=spark retard, 2=fuel cut RevLimMaxRtd, // max amount of spark retard (degx10) (at Rpm2 below) PredOpt; // Option for prediction algorithm for next tach plse // 0=use last time interval // 1=use 1st deriv prediction; 2=use 1st deriv at hi // rpm, 2nd deriv prediction at lo rpm; // 3=use 2nd deriv prediction always. int adv_table[NO_SMAPS][NO_SRPMS],cold_adv_table[NO_TEMPS], adv_offset, // all in deg x 10 // adv_offset is no deg(x10) between trigger (Input Capture) and TDC. // It may be +btdc (IC1 to TDC) or -atdc (TDC to IC2). // // | | | // | | | // -|---------------|-----|- // IC1 TDC IC2 RevLimRpm1,RevLimRpm2; // Optn 1:Retard spk by 0 deg at Rpm1 and increase // to RevLimMaxRtd at Rpm2 // Optn 2:Cut fuel above Rpm2, restore below Rpm1 unsigned char ve_table[NO_INJ][NO_FMAPS][NO_FRPMS], // % afr_table[NO_INJ][NO_FMAPS][NO_FRPMS], // afr x 10 warmen_table[NO_TEMPS],iacstep_table[NO_TEMPS], // % enrichment vs temp // iac steps tpsen_table[NO_TPS_DOTS], // accel enrichment pw in .1 ms units vs tpsdot mapen_table[NO_MAP_DOTS]; // accel enrichment pw in .1 ms units vs mapdot unsigned int frpm_table[NO_FRPMS],srpm_table[NO_SRPMS]; int fmap_table[NO_FMAPS],smap_table[NO_SMAPS], // kpa x 10, temp_table[NO_TEMPS], // deg x 10 (C or F) tpsdot_table[NO_TPS_DOTS], // change in % x 10 per .1 sec mapdot_table[NO_MAP_DOTS]; // change in kPa x 10 per .1 sec int map0,mapmax,clt0,cltmult,mat0,matmult,tps0,tpsmax,batt0,battmax, // kPa x 10, deg F or C x 10, adc counts, volts x 10 ego0,egomult,baro0,baromax,bcor0,bcormult,knock0,knockmax; // afr x 10, kpa x 10, volts x 10 int Dtpred_Gain; // % unsigned char PulseTol, // % tolerance for next input pulse IdleCtl, // idle: 0 = none, 1= solenoid, 2= iac stepper motor // - enabled only when moving, 3 = iac motor - always enabled. // 4 = Ford pwm. IACtstep, // iac stepper motor nominal time between steps (.1 ms units) IACaccstep, // iac stepper motor accel/decel step time (.1 ms)-future use IACnaccstep, // iac stepper motor no. of accel/decel steps - future use IACStart; // no. of steps to send at startup to put stepper // motor at reference (wide open) position int IdleHyst; // amount clt temp must move before Idle position is changed unsigned char CWU,CWH, // crank pulsewidths at min, max temps in temp_table (ms x 10) AWEV, // after start warmup % enrich add-on value, AWC, // after start enrichment no. of cycles Tpsacold, // cold (-40F) accel amount in .1 ms units AccMult, // cold (-40F) accel multiply factor (%) TpsThresh, // tpsdot threshhold for acc/decel enrichment(change in %x10 per .1 sec) MapThresh, // mapdot threshhold for acc/decel enrichment(change in kPax10 per .1 s) TpsAsync, // clock duration (in .1 sec tics) for accel enrichment TPSDQ; // deceleration fuel cut option (%) int TPSWOT, // TPS value at WOT (for flood clear) in %x10 TPSOXLimit; // Max tps value (%x10) where O2 closed loop active unsigned char Tps_acc_wght, // weight (0-100) to be given to tpsdot for accel enrichment. // 100 - Tps_acc_wght will then be given to mapdot. BaroOption, // 0=no baro, 1=baro is 1st reading of map (before cranking), // 2=independent barometer (=> EgoOption < 3) EgoOption, // 0 = no ego;1= nb o2;2=single wbo2;3=dual wbo2. NOTE: // BaroOption MUST be < 2 if EgoOption = 3 EgoCountCmp, // Ign Pulse counts between when EGO corrections are made EgoStep, // % step change for EGO corrections EgoLimit, // Upper/Lower rail limit (egocorr inside 100 +/- limit) AFRTarget, // NBO2 AFR determining rich/ lean Temp_Units; // 0= coolant & mat in deg F; 1= deg C int FastIdle, // fast idle Off temperature (idle_ctl = 1 only) EgoTemp, // min clt temp where ego active RPMOXLimit; // Min rpm where O2 closed loop is active unsigned int ReqFuel; // fuel pulsewidth (usec) at wide open throttle unsigned char Divider, // divide factor for input tach pulses Alternate, // option to alternate injector banks InjOpen, // Injector open time (.1 ms units) InjPWMTim, // Time (.1 ms units) after Inj opening to start pwm InjPWMPd, // Inj PWM period (us) - keep between 10-25 KHz (100-40 us) InjPWMDty, // Inj PWM duty cycle (%) BatFac, // Battery fuel pw correction factor (msx10) EngStroke, // 0 = 4 stroke // 1 = 2 stroke InjType, // 0 = port injection // 1 = throttle body NoInj, // no. of injectors (1-12) OddFire1, // > 0 = odd fire option - smaller angle bet firings (deg) OddFire2, // > 0 = odd fire option - larger angle bet firings (deg) PrimeP, // priming pulsewidth (.1 ms units) MapAveno,RpmAveno, // no. of points (Max of 8) for map, rpm rolling averages dual_tble_optn, // 1 = use dual table option - ve, afr tables for each inj FuelAlpha, // option for alpha-N mode: 0=none;1=use map,tps blend algorithm; // 2=same as 1, but don't use kpa multiplier in plsewidth eq. IgnAlpha, // option to use map,tps(alphaN) blend algorithm for ignition AfrAlpha, // option to use map,tps(alphaN) blend algorithm for WBO2 AFR cpad1; // byte pad int alpha_lorpm, // option to use map,tps(alphaN) blend algorithm for fuel alpha_hirpm, // use tps if < lorpm; use map if > hirpm; else blend., in which // case lo, hirpm should be consecutive entries in frpm_table. // set lorpm=hirpm =0 to use map enrichment only, // set lorpm =25K to use alpha-N enrichment only, alpha_map_table[6][6], // Table of ave map values (kpa x 10) for [tps][rpm] // pairs. Used only for alpha-N algorithm. // Allows ve table to retain same ve values // whether in alpha-N mode or not, amap_tps[6]; // Tps values (% x 10) for alpha_map table unsigned int amap_rpm[6]; // Rpm values for alpha_map table unsigned long baud; // baud rate int MAPOXLimit; // Max map value (kPax10) where O2 closed loop active // generic spare port parameters: spr_port = 0(don't use)/1(use),where // spr_port[0] is PM2,spr_port[1] is PE4; they are set as outs to main pcb; // out_offset= word(int) offset from start of outpc structure and // indicates which int variable to be tested for setting port (can't // use byte variables); condition='<', '>', '='; port_val= value(0/1) // to which the port will be set when the condition is met: // . // Hysteresis works as ff: if outpc word > thresh, set port to val and // leave until out word < thresh - hyst, then set to 1 - val; // similar for <; if outpc word between thresh +/- hyst, set port = val, // else set to 1 - val. Note: the '=' condition can result in PWM near // the edges of the band - this is good for warning lights, but may not // be good for other applications. char spr_port[NPORT],out_offset[NPORT],condition[NPORT],port_val[NPORT]; int thresh[NPORT],hyst[NPORT]; unsigned char TpsAsync2, cpad2; // accel tailoff duration (sec x 10) int TpsAccel2; // end pulsewidth of accel enrichment (ms x 10) int IACScale; // scale factor which multiplies IACStart and iacstep_table int inpt_spare[6]; // spares } inputs; #ifndef GCC_BUILD #pragma ROM_VAR INP_ROM #endif // flash copy of inputs - initialized const inputs inpflash EEPROM_ATTR = { 8, // no_cyl (1-12) 3, // no_skip_pulses, skip >=3 pulses 0x00, 0, // ICIgnOption,spkout_hi_lo, 31, 20, 6, // max_coil_dur,max_spk_dur,DurAcc msx10 {-40,-20,0,20,40}, // deltaV_table[], Vx10 = batt_voltx10 - 120 {24, 9, 0,-5,-9}, // deltaDur_table[], msx10 = correction for batt_volt 1, // RevLimOption:0,none; 1,retard spk; 2,fuel cut 120, // RevLimMaxRtd, deg x 10 2, // PredOpt (For EDIS PredOpt=0 is sufficient) // For EDIS keep total adv (incl. offset & cold adv) < 60 deg {{120, // adv_table[MAP/tps no=0][RPM no=0], deg x 10 120,128,145,190,347,360,360,360,360,360,360}, {120, // adv_table[MAP/tps no=1][RPM no=0], deg x 10 136,141,152,190,342,360,360,360,360,360,360}, {120, // adv_table[MAP/tps no=2][RPM no=0], deg x 10 140,148,172,197,337,360,360,360,360,360,360}, {120, // adv_table[MAP/tps no=3][RPM no=0], deg x 10 160,180,200,218,317,340,360,360,360,360,360}, {130, // adv_table[MAP/tps no=4][RPM no=0], deg x 10 180,200,220,240,309,325,360,360,360,360,360}, {140, // adv_table[MAP/tps no=5][RPM no=0], deg x 10 170,190,216,260,302,310,350,360,360,360,360}, {150, // adv_table[MAP/tps no=6][RPM no=0], deg x 10 160,180,202,240,275,295,335,360,360,360,360}, {150, // adv_table[MAP/tps no=7][RPM no=0], deg x 10 150,170,190,220,250,280,320,360,360,360,360}, {140, // adv_table[MAP/tps no=8][RPM no=0], deg x 10 140,160,180,200,225,265,305,360,360,360,360}, {120, // adv_table[MAP/tps no=9][RPM no=0], deg x 10 130,150,170,180,210,250,293,360,360,360,360}, {120, // adv_table[MAP/tps no=10][RPM no=0], deg x 10 130,140,160,170,195,235,284,360,360,360,360}, {120, // adv_table[MAP/tps no=11][RPM no=0], deg x 10 130,140,150,160,180,220,275,360,360,360,360}}, {60, // cold_adv_table[TEMP no = 0], deg x 10 50,40,30,20,10,0,0,0,0}, 0, // adv_offset, deg x 10 5500, 6000, // RevLimRpm1,2 {{{58, // ve_table[inj1][MAP/tps no =0][RPM no = 0] 58,59,63,66,68,69,69,69,67,65,63}, {58, // ve_table[inj1][MAP/tps no =1][RPM no = 0] 59,63,67,70,73,74,74,73,72,69,67}, {58, // ve_table[inj1][MAP/tps no =2][RPM no = 0] 61,65,69,72,75,76,76,76,74,71,69}, {58, // ve_table[inj1][MAP/tps no =3][RPM no = 0] 62,67,71,75,77,78,79,78,76,74,71}, {60, // ve_table[inj1][MAP/tps no =4][RPM no = 0] 66,71,76,79,82,83,83,82,81,78,75}, {61, // ve_table[inj1][MAP/tps no =5][RPM no = 0] 68,73,78,81,84,85,86,85,83,80,78}, {63, // ve_table[inj1][MAP/tps no =6][RPM no = 0] 70,75,80,84,86,88,88,87,85,82,80}, {66, // ve_table[inj1][MAP/tps no =7][RPM no = 0] 73,79,84,88,91,92,93,92,90,87,84}, {68, // ve_table[inj1][MAP/tps no =8][RPM no = 0] 75,81,86,90,93,95,95,94,92,89,86}, {71, // ve_table[inj1][MAP/tps no =9][RPM no = 0] 79,85,91,95,98,99,100,99,96,93,90}, {73, // ve_table[inj1][MAP/tps no =10][RPM no = 0] 81,87,93,97,100,102,102,101,99,95,92}, {75, // ve_table[inj1][MAP/tps no =11][RPM no = 0] 83,89,95,99,103,104,104,103,101,98,94}}, {{58, // ve_table[inj2][MAP/tps no =0][RPM no = 0] 58,59,63,66,68,69,69,69,67,65,63}, {58, // ve_table[inj2][MAP/tps no =1][RPM no = 0] 59,63,67,70,73,74,74,73,72,69,67}, {58, // ve_table[inj2][MAP/tps no =2][RPM no = 0] 61,65,69,72,75,76,76,76,74,71,69}, {58, // ve_table[inj2][MAP/tps no =3][RPM no = 0] 62,67,71,75,77,78,79,78,76,74,71}, {60, // ve_table[inj2][MAP/tps no =4][RPM no = 0] 66,71,76,79,82,83,83,82,81,78,75}, {61, // ve_table[inj2][MAP/tps no =5][RPM no = 0] 68,73,78,81,84,85,86,85,83,80,78}, {63, // ve_table[inj2][MAP/tps no =6][RPM no = 0] 70,75,80,84,86,88,88,87,85,82,80}, {66, // ve_table[inj2][MAP/tps no =7][RPM no = 0] 73,79,84,88,91,92,93,92,90,87,84}, {68, // ve_table[inj2][MAP/tps no =8][RPM no = 0] 75,81,86,90,93,95,95,94,92,89,86}, {71, // ve_table[inj2][MAP/tps no =9][RPM no = 0] 79,85,91,95,98,99,100,99,96,93,90}, {73, // ve_table[inj2][MAP/tps no =10][RPM no = 0] 81,87,93,97,100,102,102,101,99,95,92}, {75, // ve_table[inj2][MAP/tps no =11][RPM no = 0] 83,89,95,99,103,104,104,103,101,98,94}}}, {{{160, // afr_table[inj1][MAP/tps no =0][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj1][MAP/tps no =1][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj1][MAP/tps no =2][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj1][MAP/tps no =3][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj1][MAP/tps no =4][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj1][MAP/tps no =5][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj1][MAP/tps no =6][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj1][MAP/tps no =7][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj1][MAP/tps no =8][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj1][MAP/tps no =9][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj1][MAP/tps no =10][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj1][MAP/tps no =11][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}}, {{160, // afr_table[inj2][MAP/tps no =0][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj2][MAP/tps no =1][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj2][MAP/tps no =2][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj2][MAP/tps no =3][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj2][MAP/tps no =4][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj2][MAP/tps no =5][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj2][MAP/tps no =6][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj2][MAP/tps no =7][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj2][MAP/tps no =8][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj2][MAP/tps no =9][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj2][MAP/tps no =10][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}, {160, // afr_table[inj2][MAP/tps no =11][RPM no = 0], afrx10 160,150,147,147,147,140,130,120,120,120,120}}}, {180, // warmen_table[TEMP no = 0], % enrichment vs temp 180,160,150,135,125,113,108,102,100}, {40, // iacstep_table[TEMP no = 0], 60,75,90,105,120,130,140,150,160}, {20, // tpsen_table[TPS_DOT no = 0], enrichment in .1ms vs tpsdot 50,105,150}, {0, // mapen_table[TPS_DOT no = 0], enrichment in .1ms vs mapdot 0,0,0}, {500, // frpm_table[RPM no = 0] , use in VE, AFR tables 1000,1500,2000,2800,3600,4400,5200,5200,5200,5200,5200}, {500, // srpm_table[RPM no = 0] , use in spark advance table 1000,1500,2000,2800,3600,4400,5200,5200,5200,5200,5200}, {200, // fmap_table[MAP/tps no = 0], kPa x 10 , use for VE, AFR 300,400,500,600,750,900,1000,1000,1000,1000,1000}, {200, // smap_table[MAP/tps no = 0], kPa x 10 , use for spk adv 300,400,500,600,750,900,1000,1000,1000,1000,1000}, {-400, // temp_table[TEMP no = 0], deg x 10 -200,0,200,400,600,800,1000,1300,1600}, {100, // tpsdot_table[TPS_DOT no =0], 400,800,1540}, // change in % x 10 per .1 sec {0, // mapdot_table[TPS_DOT no =0], 0,0,0}, // change in kPa x 10 per .1 sec 93, // map0, kPa x 10, value @ 0 ADC counts 2609, // mapmax, kPa x 10, value @ max(1023) ADC counts 0, // clt0, deg (C or F) x 10 100, // cltmult, % 0, // mat0, deg (C or F) x 10 100, // matmult, % 0, // tps0, adc counts 1023, // tpsmax, adc counts 1, // batt0, v x 10 297, // battmax, v x 10 0, // ego0, afr x 10 100, // egomult, % 93, // baro0, kPa x 10 2609, // baromax, kPa x 10 147, -47, // bcor0,bcormult kpax10, slope 0, // knock0, v x 10 50, // knockmax, v x 10 20, // Dtpred_Gain, % 50, // PulseTol, % tolerance for next input pulse 2, // IdleCtl, idle: 0 = none, 1= solenoid, 2= iac stepper motor // - enabled only when moving, 3 = iac motor - always enabled. // 4 = Ford PWM iac 25, // IACtstep, .1 ms units (25 gives pulse freq of 400 Hz) 0, // IACaccstep 0, // IACnaccstep 160, // IACStart, no. of steps to send at startup to put stepper // motor at reference (wide open) position 50, // IdleHyst amount (degx10) 120, 40, // CWU,CWH, crank pw at min, max temps in temp_table (ms x 10) 35, // AWEV, after start warmup % enrich add-on value, 250, // AWC, after start enrichment no. of cycles 90, // Tpsacold, cold (-40F) accel amount in .1 ms units 100, // AccMult, cold (-40F) accel multiply factor (%) 100, // TpsThresh, tpsdot threshhold for accel enrichment(change in %x10 per .1 s) 40, // MapThresh, mapdot threshhold for accel enrichment(change in kPax10 per .1 s) 2, // TpsAsync, clock duration (in .1 sec tics) for accel enrichment 90, // TPSDQ, deceleration fuel cut option (%) 700, // TPSWOT, TPS value at WOT (for flood clear), %x10 700, // TPSOXLimit, Max tps value (%x10) where O2 closed loop active 100, // Tps_acc_wght, weight to be given to tpsdot for accel enrichment. // 100 - Tps_acc_wght will then be given to mapdot. 1, // BaroOption, 0=no baro, 1=baro is 1st reading of map (before cranking), // 2=independent barometer 1, // EgoOption, 0 = no ego;1= nb o2;2=single wbo2;3=dual wbo2. 16, // EgoCountCmp, Ign Pulse counts between when EGO corrections are made 1, // EgoStep, % step change for EGO corrections 15, // EgoLimit, Upper/Lower rail limit (egocorr inside 100 +/- limit) 140, // AFRTarget, NBO2 afr (afrx10) determining rich/ lean 0, // Temp_Units, 0= coolant & mat in deg F; 1= deg C 1400, // FastIdle, fast idle temperature (degx10) (idle_ctl = 1 only) 1600, // EgoTemp, min clt temp where ego active, degx10 1300, // RPMOXLimit, Min rpm where O2 closed loop is active 15500, // ReqFuel; fuel pulsewidth (usec) at wide open throttle 4, // Divider, divide factor for input tach pulses 1, // Alternate, option to alternate injector banks 10, // InjOpen, Injector open time (.1 ms units) 255, // InjPWMTim, Time (.1 ms units) after opening to start pwm 66, // InjPWMPd, Injector PWM period (us) 75, // InjPWMDty, Injector PWM duty cycle (%) 12, // BatFac, Battery fuel pw correction factor (msx10) 0, // EngStroke, 0 = 4 stroke, 1 = 2 stroke 0, // InjType, 0 = port injection, 1 = throttle body 8, // NoInj, no. of injectors (1-12) 0,0, // OddFire smaller, larger angle between firings 20, // PrimeP, priming pulsewidth (.1 ms units) 2,2, // MapAveno, RpmAveno No. points (Max of 8) for averaging 0, // dual table option 0, // fuel alpha-N, map blend option 0, // ign alpha-N, map blend option 0, // WBO2 AFR alpha-N, map blend option 0, // byte pad 0, // lo rpm for alpha-N, map blend option 0, // alpha-N hi rpm {{1000,600,300,350,400,400}, // alpha_map_table[tps no =0][RPM nos 0-5] (kpa x 10) {1000,650,350,400,450,450}, // alpha_map_table[tps no =1][RPM nos 0-5] {1000,700,400,450,500,500}, // alpha_map_table[tps no =2][RPM nos 0-5] {1000,750,450,500,550,550}, // alpha_map_table[tps no =3][RPM nos 0-5] {1000,800,500,550,600,600}, // alpha_map_table[tps no =4][RPM nos 0-5] {1000,800,500,550,600,600}}, // alpha_map_table[tps no =5][RPM nos 0-5] {0,120,160,300,600,600}, // amap_tps[0 - 5] (% x 10); {0,500,1000,1500,2000,2000}, // amap_rpm[0 - 5] 115200, // baud rate 900, // MAPOXLimit, Max MAP value (kPax10) where O2 closed loop active {0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, // spare port parameters 1,0, // accel tail duration (sec x 10) 20, // accel end pwidth enrichment (ms x 10) 1, // IAC Scale factor {0,0,0,0,0,0} // spares }; const unsigned char inp_spare[1536 - sizeof(inpflash)] EEPROM_ATTR ={0}; // 1536 = 3 blocks flash #ifndef GCC_BUILD #pragma ROM_VAR DEFAULT #pragma ROM_VAR OVF_ROM #endif // IAC stepper motor sequence const unsigned char IACCoilA[8] = {0,0,1,1,0,0,1,1}; const unsigned char IACCoilB[8] = {1,0,0,1,1,0,0,1}; // array of TC overflow numbers at which to increment secs cntr. const unsigned int TC_ovfla[60] = { 23, 46, 69, 92, 114, 137, 160, 183, 206, 229, 252, 275, 298, 320, 343, 366, 389, 412, 435, 458, 481, 504, 526, 549, 572, 595, 618, 641, 664, 687, 710, 732, 755, 778, 801, 824, 847, 870, 893, 916, 938, 961, 984, 1007, 1030, 1053, 1076, 1099, 1122, 1144, 1167, 1190, 1213, 1236, 1259, 1282, 1305, 1328, 1350, 1373 }; const char RevNum[20] = { // interface no. "MSII Rev 1.31000 " }, Signature[32] = { // code version "** V1.34Embedded Code by B&G **" }; #ifndef GCC_BUILD #pragma ROM_VAR DEFAULT #endif // ram copy of inputs inputs inpram; // sensor variables int last_tps,last_map,tpsdot_ltch,mapdot_ltch; // fuel variables unsigned int pwcalc1,pwcalc2,pw_open; unsigned int Fl1OCt_overflow,Fl2OCt_overflow; unsigned long Fl1TimerComp,Fl2TimerComp; unsigned char pwm1_on,pwm2_on; unsigned long pwm1_time,pwm2_time; // ignition variables unsigned char SPK,CHG, pulse_no,ign_state,ign_setpin, IgnOCpinstate,first_edis; long adv_us,charge_time,coil_dur_set; int ICt_overflow,IgnOCt_overflow,coil_dur,ic_adv_deg; unsigned long IgnTimerComp,dtpred; // IAC variables unsigned long motor_time; int motor_step, IACmotor_pos,last_iacclt; char IAC_moving,IACmotor_reset; // General variables unsigned int mms,millisec,burn_flag,iacpwmctr; unsigned int TC_ovflow,TC_ov_ix; unsigned long lmms,t_enable_IC,t_chgoff,Rpm_Coeff,ltch_lmms,rcv_timeout; unsigned char flocker,tpsaclk,egocount,asecount,igncount,altcount, first_adc,txmode,tble_type,synch,trig_ret_mode,reinit_flag; /* Clocks: - igncount: counts up each tach pulse, cleared when hit Divider pulses (and injection occurs). - asecount: counts up each time igncount = 0 (each Divider pulses). - egocount: counts up each tach pulse, cleared when hits EgoCountCmp - tpsaclk: counts every .1 sec - altcount: flips 0,1,0,1... on each injection, resulting in firing alternate injector banks if Alternate option. */ unsigned int txcnt,txgoal,rxoffset,rxnbytes,rxcnt, tble_word,ntword,no_tble_words[NO_TBLES]; unsigned int *tble_addr[NO_TBLES]; int kpa; // Averaging variables unsigned int rpm_buf[8]; int map_buf[8]; unsigned long rpm_bufsum,map_bufsum; unsigned char rpm_aveix,map_aveix,rpm_avestate,map_avestate; // rs232 Outputs to pc typedef struct { unsigned int seconds,pw1,pw2,rpm; // pw in usec int adv_deg; // adv in deg x 10 unsigned char squirt,engine,afrtgt1,afrtgt2; // afrtgt in afr x 10 /* ; Squirt Event Scheduling Variables - bit fields for "squirt" variable above inj1: equ 0 ; 0 = no squirt; 1 = inj squirting inj2: equ 1 ; Engine Operating/Status variables - bit fields for "engine" variable above ready: equ 0 ; 0 = engine not ready; 1 = ready to run (fuel pump on or ign plse) crank: equ 1 ; 0 = engine not cranking; 1 = engine cranking startw: equ 2 ; 0 = not in startup warmup; 1 = in startw enrichment warmup: equ 3 ; 0 = not in warmup; 1 = in warmup tpsaen: equ 4 ; 0 = not in TPS acceleration mode; 1 = TPS acceleration mode tpsden: equ 5 ; 0 = not in deacceleration mode; 1 = in deacceleration mode */ unsigned char wbo2_en1,wbo2_en2; // from wbo2 - indicates whether wb afr valid int baro,map,mat,clt,tps,batt,ego1,ego2,knock, // baro - kpa x 10 // map - kpa x 10 // mat, clt deg(C/F)x 10 // tps - % x 10 // batt - vlts x 10 // ego1,2 - afr x 10 // knock - volts x 10 egocor1,egocor2,aircor,warmcor, // all in % tpsaccel,tpsfuelcut,barocor,gammae, // tpsaccel - acc enrich(.1 ms units) // tpsfuelcut - % // barcor,gammae - % vecurr1,vecurr2,iacstep,cold_adv_deg, // vecurr - % // iacstep - steps // cold_adv_deg - deg x 10 tpsdot,mapdot, // tps, map rate of change - %x10/.1 sec, // kPax10 / .1 sec coil_dur, // msx10 coil chge set by ecu spare1,spare2,spare3,spare4,spare5,spare6,spare7,spare8,spare9; } variables; variables outpc, txbuf; // Prototypes - Note: ISRs prototyped above. void ign_reset(void); int move_IACmotor(void); void fburner(unsigned int* progAdr, unsigned int* bufferPtr, unsigned int no_words); void tburner(char erase_write, unsigned int* addr, unsigned int word); int ign_table(unsigned int rpm, int map); int cold_ign_table(int clt); int barocor_table(int baro); int aircor_table(int mat); int warmcor_table(int clt); int iaccmd_table(int clt); int tpscor_table(int tpsdot); int mapcor_table(int mapdot); int vecalc_table(unsigned int rpm, int map, char inj); int afrcalc_table(unsigned int rpm, int map, char inj); int alphcalc_table(unsigned int rpm, int tps); void set_spr_port(char port, char val); int coil_dur_table(int delta_volt); void Flash_Init(unsigned long oscclk); void Flash_Erase_Sector(unsigned int *address); void Flash_Write_Word(unsigned int *address, unsigned int data); extern void DoOnStack(unsigned int* address); extern void reboot(void); extern void monitor(void); int main(void) { int ix; int tmp1,tmp2,tmp3,tmp4,wrmtmp,tpsatmp,tpsaccel_end; unsigned int utmp1; long adcval,lsum,lsum1,lsum2,beta,ltmp; int egostep; // initalize PLL - reset default is Oscillator clock // 8 MHz oscillator, PLL freq = 48 MHz, 24 MHz bus, // divide by 16 for timer of 2/3 usec tic PLLCTL &= 0xBF; // Turn off PLL so can change freq SYNR = 0x02; // set PLL/ Bus freq to 48/ 24 MHz REFDV = 0x00; PLLCTL |= 0x40; // Turn on PLL // wait for PLL lock while (!(CRGFLG & 0x08)); CLKSEL = 0x80; // select PLL as clock // wait for clock transition to finish for (ix = 0; ix < 60; ix++); // open flash programming capability Flash_Init(8000); //inp_spare used to force inpflash into 3 sectors. It has to be // used in the program or it won't use up the 3rd sector. POS CW // ignores the pragma making this stupid statement necessary. ix = inp_spare[0]; // load all user inputs from Flash to RAM memcpy(&inpram,&inpflash,sizeof(inpflash)); // set up i/o ports // - port M0 is fuel pump relay // - port M1 is fast idle solenoid // - port M2 is spare (output) // - port M3 is inj led // - port M4 is accel led // - port M5 is warmup led // - port P5 is bootload pin (input) // - port T5 is ignition OC // - port T6 is IAC Coil A // - port T7 is IAC Coil B // - port B4 is IAC Enable DDRM = 0xFF; // port M - all outputs, full drive by default DDRT |= 0xE0; // port T5-7 - outputs DDRB |= 0x10; // port B4 - output // turn off fuel pump, solenoids, leds PTM = 0x00; PTT &= 0x3F; // turn off IAC coils if(inpram.IdleCtl == 3) { PORTB &= ~0x10; // enable current to motor always(set bit= 0) } // set all unused (even unbonded) ports to inputs with pullups DDRA = 0x00; DDRB &= 0x10; DDRE = 0x00; PUCR |= 0x13; // enable pullups for ports E, B and A DDRP = 0x00; PERP = 0xFF; // enable pullup resistance for port P DDRJ &= 0x3F; PERJ |= 0xC0; // enable pullup resistance for port J6,7 DDRS &= 0xF3; PERS |= 0x0C; // enable pullup resistance for port S2,3 // set spare port on port E to output if it is to be used if(inpram.spr_port[1]) DDRE |= 0x10; // set port E, bit 1 as output (for knock enable) DDRE |= 0x02; reinit_flag = 0; // set up CRG RTI Interrupt for .128 ms clock. CRG from 8MHz oscillator. mms = 0; // .128 ms tics millisec = 0; // 1.024 ms clock (8 tics) for adcs lmms = 0; ltch_lmms = 0; outpc.seconds = 0; // (1.0035) secs burn_flag = 0; RTICTL = 0x10; // load timeout register for .128 ms (smallest possible) CRGINT |= 0x80; // enable interrupt CRGFLG = 0x80; // clear interrupt flag (0 writes have no effect) // Set up SCI (rs232): SCI BR reg= BusFreq(=24MHz)/16/baudrate SCI0BDL = (unsigned char)(1500000/inpram.baud); ltmp = (150000000/inpram.baud) - ((long)SCI0BDL*100); if(ltmp > 50)SCI0BDL++; // round up SCI0CR1 = 0x00; SCI0CR2 = 0x24; // TIE=0,RIE = 1; TE=0,RE =1 txcnt = 0; rxcnt = 0; txmode = 0; txgoal = 0; rcv_timeout = 0xFFFFFFFF; tble_addr[0] = (unsigned int *)&cltfactor_table; no_tble_words[0] = sizeof(cltfactor_table) / 2; tble_addr[1] = (unsigned int *)&matfactor_table; no_tble_words[1] = sizeof(matfactor_table) / 2; tble_addr[2] = (unsigned int *)&egofactor_table; no_tble_words[2] = sizeof(egofactor_table) / 2; // Initialize timers: // Note: Inj OC and PWM are Nanded. // -when turn on inj1 i/o, also enable pwm1 @ 100 % duty & // set pwm1 timer = 0 (.1 ms units). // -When pwm1 timer = InjPWMTim, set duty cycle to InjPWMDty. // -when done injecting, turn off inj1 i/o and pwm1. // TC0: Input capture (tach) - no pullup (default) for MSII // TC1: Output compare for injector output - bank 1 // TC2: PWM2 for injector bank 1 // TC3: Output compare for injector output - bank 2 // TC4: PWM4 for injector bank 2 // TC5: Ouput compare for ignition output SPK = 1 - inpram.spkout_hi_lo; // 0=spk low, but inverted logic CHG = 1 - SPK; // after transistor TIOS |= 0x3E; // Timer ch 0 = IC, ch 1-5 = OC & PWM, // ch 6,7 = I/O output // Set prescaler to 16. This divides bus clk (= PLLCLK/2 = 24 MHz) // by 16. This gives 1.5 MHz timer, 1 tic = 2/3 us. TSCR2 = 0x04; TCTL2 |= 0x88; // bit OM1,3,5 = 1. OC output line high or // low iaw OL1,3,5 (not toggle or disable) TCTL1 |= 0x08; TSCR2 |= 0x80; // enable timer overflow interrupt (TOI) // Set up injector PWMs - PWM2, 4 MODRR = 0x14; // Make Port T pins 2,4 be PWM PWME = 0; // disable pwms initially PWMPOL = 0x14; // polarity = 1, => go hi when start PWMCLK = 0x14; // select scaled clocks SB, SA PWMPRCLK = 0x00; // prescale A,B clocks = bus = 24 MHz PWMSCLA = 0x0C; // pwm clk = SA clk/(2*SCLA) = 24MHz/24 = 1 us clk PWMSCLB = 0x0C; // pwm clk = SB clk/(2*SCLB) = 24MHz/24 = 1 us clk PWMCAE = 0x00; // standard left align pulse: ----- // | |______ // duty // <---period---> PWMPER2 = inpram.InjPWMPd; // set PWM period (us) PWMPER4 = inpram.InjPWMPd; // set PWM period (us) ign_reset(); first_edis = 1; // IACStart = enough steps to set IAC wide open. // Set current IAC position to IACStart (all way closed), then move // to the 0 position (wide open - fast idle) and zero out. After // this all subsequent IAC commands will gradually close air passage // as clt temp rises. // Note: Ignore all move commands until finished current move. IAC_moving = 0; motor_step = -1; if(inpram.IdleCtl == 4) IACmotor_reset = 1; else IACmotor_reset = 0; outpc.iacstep = inpram.IACStart * inpram.IACScale; // set current motor step pos // to closed since don't have actual position. IACmotor_pos = 0; // command motor step position to wide open move_IACmotor(); last_iacclt = -3200; iacpwmctr = 0; // set up ADC processing // ATD0 // - AN0 is MAP // - AN1 is MAT // - AN2 is CLT // - AN3 is TPS // - AN4 is BAT // - AN5 is EGO1 (NB or non-MS single chan WB) // - AN6 is Spare or BARO (BaroOption =2) or EGO2 (EgoOption = 3) // - AN7 is Spare or KNOCK // Set up ADCs so they continuously convert, then read result registers // every millisecond first_adc = 2; // use 2nd ADC reading for BaroOption=1 ATD0CTL2 = 0x40; // leave interrupt disabled, set fast flag clear ATD0CTL3 = 0x00; // do 8 conversions/ sequence ATD0CTL4 = 0x67; // 10-bit resoln, 16 tic cnvsn (max accuracy), // prescaler divide by 16 => 1 us tic x 18 tics ATD0CTL5 = 0xB0; // right justified,unsigned, continuous cnvsn, // sample 8 channels starting with AN0 ATD0CTL2 = 0x80; // turn on ADC0 // Initialize variables flocker = 0; Rpm_Coeff = 120000000 / inpram.no_cyl; pwcalc1 = 0; // us outpc.pw1 = pwcalc1; pwcalc2 = 0; // us outpc.pw2 = pwcalc2; outpc.adv_deg = 0; // crank deg x 10 ic_adv_deg = outpc.adv_deg - inpram.adv_offset; coil_dur = inpram.max_coil_dur; // msx10 coil_dur_set = coil_dur * 100; // us outpc.coil_dur = (int)(coil_dur_set / 100); // msx10 last_tps = 100; // % x 10 last_map = 700; // kPa x 10 outpc.afrtgt1 = 147; // afr x 10 outpc.afrtgt2 = outpc.afrtgt1; outpc.map = 700; // kPa x 10 outpc.baro = 1010; // kPA X 10 if(inpram.Temp_Units == 0) { outpc.mat = 700; // degF x 10 outpc.clt = 700; // degF x 10 } else { outpc.mat = 200; // degC x 10 outpc.clt = 200; // degC x 10 } outpc.tps = 100; // % x 10 outpc.batt = 130; // volts x 10 outpc.aircor = 100; outpc.vecurr1 = 100; outpc.vecurr2 = outpc.vecurr1; outpc.barocor = 100; outpc.warmcor = 100; outpc.cold_adv_deg = 0; // crank deg x 10 outpc.wbo2_en1 = 1; outpc.wbo2_en2 = 1; outpc.ego1 = 147; // afr x 10 outpc.ego2 = 147; // afr x 10 outpc.egocor1 = 100; outpc.egocor2 = 100; outpc.tpsfuelcut = 100; outpc.gammae = 100; outpc.tpsaccel = 0; outpc.knock = 0; // make IC highest priority interrupt HPRIO = 0xEE; // enable global interrupts ENABLE_INTERRUPTS // Prime Pulse - shoot 1 prime pulse of length PrimeP ms x 10 if(inpram.PrimeP) { outpc.pw1 = inpram.PrimeP * 100; // us outpc.pw2 = outpc.pw1; // Turn on fuel pump PTM |= 0x01; // Turn On injectors & PWMs TCTL2 |= 0x44; // set outputs hi in OL1,3 CFORC |= 0x0A; // force high // set PWM duty (on time) to 100 % PWMDTY2 = PWMPER2; PWMDTY4 = PWMDTY2; pwm1_on = 0; pwm1_time = 0; pwm2_on = 0; pwm2_time = 0; PWMCNT2 = 0x00; PWMCNT4 = 0x00; PWME |= 0x14; // enable PWMs // Set up to turn Off injectors when get to pw us Fl1TimerComp = TCNT + ((3*(long)outpc.pw1)>>1); // 2/3 us TCTL2 &= ~0x44; // set outputs lo in OL1,3 Fl1OCt_overflow = Fl1TimerComp >> 16; Fl1TimerComp &= 0xFFFF; Fl2TimerComp = Fl1TimerComp; Fl2OCt_overflow = Fl1OCt_overflow; TC1 = (unsigned short)Fl1TimerComp; // load OC compare register TC3 = (unsigned short)Fl2TimerComp; // load OC compare register if(Fl1OCt_overflow <= 1) { Fl1OCt_overflow = 0; Fl2OCt_overflow = 0; // Enable OC interrupt TIE |= 0x0A; } else { // Disable OC interrupt TIE &= ~0x0A; TFLG1 = 0x0A; // clear OC interrupt flag } // turn on inj led PTM |= 0x08; outpc.squirt |= 0x03; // both injectors squirting outpc.engine |= 0x01; // engine in ready to run status // Note: prime pulse should be over (25 ms max) before cranking starts } // main loop while(1) { // read all 10-bit ADC results & convert to engineering units adcval = (long)inpram.mat0 + ((long)inpram.matmult * matfactor_table[ATD0DR1]) / 100; // deg F or C x 10 outpc.mat = (short)adcval; adcval = (long)inpram.clt0 + ((long)inpram.cltmult * cltfactor_table[ATD0DR2]) / 100; // deg F or C x 10 outpc.clt = (short)adcval; adcval = (long)inpram.batt0 + ((long)(inpram.battmax - inpram.batt0) * ATD0DR4) / 1023; // V x 10 outpc.batt = (short)adcval; if(inpram.EgoOption >= 1) { adcval = (long)inpram.ego0 + ((long)inpram.egomult * egofactor_table[ATD0DR5]) / 100; // afr x 10 outpc.ego1 = (short)adcval; } if(inpram.EgoOption == 3) { adcval = (long)inpram.ego0 + ((long)inpram.egomult * egofactor_table[ATD0DR6]) / 100; // afr x 10 outpc.ego2 = (short)adcval; } else outpc.ego2 = outpc.ego1; if(inpram.BaroOption == 0) { outpc.barocor = 100; } if((inpram.BaroOption == 1) && (first_adc > 0)) { adcval = (long)inpram.map0 + ((long)(inpram.mapmax - inpram.map0) * ATD0DR0) / 1023; // kPa x 10 outpc.baro = (short)adcval; // kPa x 10 first_adc--; }; if(inpram.BaroOption == 2) { adcval = (long)inpram.baro0 + ((long)(inpram.baromax - inpram.baro0) * ATD0DR6) / 1023; // kPa x 10 outpc.baro = (short)adcval; } adcval = (long)inpram.knock0 + ((long)(inpram.knockmax - inpram.knock0) * ATD0DR7) / 1023; // V x 10 outpc.knock = (short)adcval; if(inpram.BaroOption) // barometric correction (%) outpc.barocor = barocor_table(outpc.baro); outpc.aircor = aircor_table(outpc.mat); // airdensity correction (%) /* Determine if in Speed-density or Alpha-N mode. If in Alpha-N mode, set the variable "kpa" = "tps". This will not break anything, since this check is performed again when multiplying MAP against the enrichments, and the SCI version of the variable is MAP, not kpa. */ if(!inpram.FuelAlpha) { kpa = outpc.map; // kpa x 10 } else if(outpc.rpm < inpram.alpha_lorpm) { kpa = alphcalc_table(outpc.rpm,outpc.tps); // kpa x 10 } else if(outpc.rpm > inpram.alpha_hirpm) { kpa = outpc.map; // kpa x 10 } else { beta = ((long)100 * (outpc.rpm - inpram.alpha_lorpm)) / (inpram.alpha_hirpm - inpram.alpha_lorpm); kpa = (short)((alphcalc_table(inpram.alpha_lorpm,outpc.tps) * (100 - beta)) / 100); kpa =(short)(kpa + ((outpc.map * beta) / 100)); } // check for stall if(((outpc.engine & 0x01) == 0) || (outpc.rpm == 0))goto BURN_FLASH; // check idle control if(inpram.IdleCtl == 1) { if(first_adc > 0) { if(outpc.clt < inpram.FastIdle) PTM |= 0x02; // turn on fast idle solenoid } if(outpc.clt < inpram.FastIdle - inpram.IdleHyst) PTM |= 0x02; // turn on fast idle solenoid else if(outpc.clt > inpram.FastIdle) PTM &= ~0x02; // turn off fast idle solenoid } else if(IACmotor_reset && ((inpram.IdleCtl == 2) || (inpram.IdleCtl == 3) || (inpram.IdleCtl == 4))) { if((outpc.clt < last_iacclt - inpram.IdleHyst) || (outpc.clt > last_iacclt)) { IACmotor_pos = iaccmd_table(outpc.clt); if(outpc.iacstep != IACmotor_pos) { // move IAC motor to new step position if(move_IACmotor()) last_iacclt = outpc.clt; } } } /************************************************************************** ** ** Cranking Mode ** ** Pulsewidth is directly set by the coolant temperature to a value of ** CWU (at temp_table[0]) and CWH (at temp_table[NO_TEMPS -1]). ** The value is interpolated at clt. ** **************************************************************************/ if(outpc.rpm < CRANK_RPM) { outpc.engine |= 0x02; // set cranking bit outpc.engine &= ~0x0C; // clr starting warmup bit & warmup bit if(outpc.tps > inpram.TPSWOT) { pwcalc1 = 300; // usec (.3 ms for Flood Clear) pwcalc2 = pwcalc1; goto DIST_ADV; } // KJW if outside the interpolation range, rail to CWU or CWH as // appropriate, else interpolate if(outpc.clt >= inpram.temp_table[NO_TEMPS-1]) pwcalc1 = (unsigned short)inpram.CWH * 100; else if(outpc.clt <= inpram.temp_table[0]) pwcalc1 = (unsigned short)inpram.CWU * 100; else { ltmp = (outpc.clt - inpram.temp_table[0]) * (long)(inpram.CWH - inpram.CWU) * 100; pwcalc1 = (unsigned short)(inpram.CWU * (long)100 + (ltmp / (inpram.temp_table[NO_TEMPS-1] - inpram.temp_table[0]))); // usec } pwcalc2 = pwcalc1; goto DIST_ADV; } /************************************************************************** ** ** Warm-up and After-start Enrichment Section ** ** The Warm-up enrichment is a linear interpolated value for the current clt ** temperature from warmen_table[NO_TEMPS] vs temp_table[NO_TEMPS]. The ** interpolation is done in subroutine warmcor_table. ** ** Also, the after-start enrichment value is calculated and applied here - it ** is an added percent value on top of the warmup enrichment, and it is applied ** for the number of ignition cycles specified in AWC. This enrichment starts ** at a value of AWEV at first, then it linearly interpolates down to zero ** after AWC cycles. ** ** If (startw, engine is set) then: ** compare if (AWC > 0) then: ** interpolate for warmup enrichment ** else clear startw bit in engine ** **************************************************************************/ wrmtmp = outpc.warmcor; if(outpc.engine & 0x02) { // if engine cranking outpc.engine &= ~0x02; // clear crank bit outpc.engine |= 0x0C; // set starting warmup bit & warmup bit asecount = 0; } wrmtmp = warmcor_table(outpc.clt); // % outpc.cold_adv_deg = cold_ign_table(outpc.clt); // deg x 10 if(wrmtmp == 100) { // done warmup outpc.engine &= ~0x0C; // clear start warmup bit & warmup bit PTM &= ~0x20; // clear warmup led goto END_WRM; } PTM |= 0x20; // set warmup led outpc.engine |= 0x08; // set warmup bit if(!(outpc.engine & 0x04)) // if starting warmup bit clear goto END_WRM; if(asecount > inpram.AWC) { outpc.engine &= ~0x04; // clear start warmup bit goto END_WRM; } if(inpram.AWC > 0) { utmp1 = inpram.AWEV * asecount; wrmtmp += (inpram.AWEV - (utmp1 / inpram.AWC)); } END_WRM: outpc.warmcor = wrmtmp; /************************************************************************** ** ** Throttle Position Acceleration Enrichment ** ** Method is the following: ** ** ** ACCELERATION ENRICHMENT: ** If (tpsdot < 0) goto DEACCELERATION_ENRICHMENT ** If tpsdot > tpsthresh and TPSAEN bit = 0 then (acceleration enrichment): ** { ** 1) Set acceleration mode ** 2) Continuously determine rate-of-change of throttle, and perform ** interpolation of table values to determine acceleration ** enrichment amount to apply. ** } ** If (TPSACLK > TpsAsync) and TPSAEN is set then: ** { ** 1) Clear TPSAEN bit in engine ** 2) Set TPSACCEL to 0 ** 3) Go to EGO Delta Step Check Section ** } ** Enrichment tail-off pulsewidth: ** ** ------------------ tpsaccel ** | |\ ** | | \ ** | | \ ** | | \ ____ TpsAccel2 ** | | | ** | | | ** --------------------------- ** <--TpsAsync--><-TpsAsync2-> ** ** ** DEACCELERATION ENRICHMENT: ** If (-tpsdot) > tpsthresh then (deceleration fuel cut) ** { ** If (TPSAEN = 1) then: ** { ** 1) TPSACCEL = 0 (no acceleration) ** 2) Clear TPSAEN bit in ENGINE ** 3) Go to EGO Delta Step ** } ** If (RPM > 1500 then (fuel cut mode): ** { ** 1) Set TPSACCEL value to TPSDQ ** 2) Set TPSDEN bit in ENGINE ** 3) Go to EGO Delta Step Check Section ** } ** } ** else ** { ** If (TPSDEN = 1) then ** { ** 1) Clear TPSDEN bit in ENGINE ** 2) TPSACCEL = 0 ** 3) Go to EGO Delta Step Check Section ** } ** } ** **************************************************************************/ tpsatmp = outpc.tpsaccel; DISABLE_INTERRUPTS tpsdot_ltch = outpc.tpsdot; mapdot_ltch = outpc.mapdot; ENABLE_INTERRUPTS if(tpsdot_ltch < 0)goto TDE; // we are decelerating if(((inpram.Tps_acc_wght == 0) || (tpsdot_ltch < inpram.TpsThresh)) && ((inpram.Tps_acc_wght == 100) || (mapdot_ltch < inpram.MapThresh))) goto TAE_CHK_TIME; if(outpc.engine & 0x10)goto AE_COMP_SHOOT_AMT; // if accel enrich bit set // start out using first element - determine actual next time around tpsatmp = (((short)inpram.tpsen_table[0] * inpram.Tps_acc_wght) + ((short)inpram.mapen_table[0] * (100 - inpram.Tps_acc_wght))) / 100; tpsaclk = 0; // incremented in .1 sec timer outpc.engine |= 0x10; // set tpsaen bit outpc.engine &= ~0x20; // clear tpsden bit PTM |= 0x10; // set accel led goto END_TPS; /* First, calculate Cold temperature add-on enrichment value from coolant value TPSACOLD at min temp & 0 at high temp. Then determine cold temperature multiplier value ACCELMULT (in percent). Next, Calculate Shoot amount (quantity) for acceleration enrichment from table. Find bins (between) for corresponding TPSDOT and MAPDOT, and linear interpolate to find enrichment amount from table. This is continuously checked every time thru main loop while in acceleration mode, and the highest value is latched and used. The final acceleration enrichment (in .1 ms units) applied is AE = (((Alookup(TPSDOT)*Tps_acc_wght + Alookup(MAPDOT)*(100 - Tps_acc_wght)) /100) * ACCELMULT/100) + TPSACOLD. */ AE_COMP_SHOOT_AMT: if(tpsaclk <= inpram.TpsAsync) { tmp1 = (short)inpram.Tpsacold - (short)((inpram.Tpsacold * (long)(outpc.clt - inpram.temp_table[0]) / (inpram.temp_table[NO_TEMPS-1] - inpram.temp_table[0]))); // in .1 ms tmp2 = (short)inpram.AccMult + (short)(((100 - inpram.AccMult) * (long)(outpc.clt - inpram.temp_table[0]) / (inpram.temp_table[NO_TEMPS-1] - inpram.temp_table[0]))); // in % if(inpram.Tps_acc_wght > 0) { tmp3 = tpscor_table(tpsdot_ltch); // .1 ms units } else tmp3 = 0; if(inpram.Tps_acc_wght < 100) { tmp4 = mapcor_table(mapdot_ltch); // .1 ms units } else tmp4 = 0; tmp3 = ((tmp3 * inpram.Tps_acc_wght) + (tmp4 * (100 - inpram.Tps_acc_wght))) / 100; tmp3 = (tmp3 * tmp2) / 100; if(tmp3 > 200) tmp3 = 200; // rail at 20 ms tmp3 += tmp1; if(tmp3 > tpsatmp) tpsatmp = tmp3; // make > tps/mapen_table entry for lowest tps/mapdot // plus latch and hold largest pw tpsaccel_end = tpsatmp; // latch last tpsaccel before tailoff } else { // tailoff enrichment pulsewidth if(inpram.TpsAsync2 > 0) { tpsatmp = tpsaccel_end + (short)(((inpram.TpsAccel2 - tpsaccel_end) * (long)(tpsaclk - inpram.TpsAsync)) / inpram.TpsAsync2); } else tpsatmp = 0; } TAE_CHK_TIME: // check if accel is done if(!(outpc.engine & 0x20)) { // if tps decel bit not set if(tpsaclk < (inpram.TpsAsync + inpram.TpsAsync2))goto END_TPS; } outpc.engine &= ~0x10; // clear tps accel bit outpc.tpsfuelcut = 100; tpsatmp = 0; PTM &= ~0x10; // clear accel led outpc.engine &= ~0x20; // clear tps decel bit goto END_TPS; TDE: // decel if((-tpsdot_ltch) < inpram.TpsThresh)goto TDE_CHK_DONE; if(outpc.engine & 0x10) { // if tps accel bit set outpc.tpsfuelcut = 100; tpsatmp = 0; outpc.engine &= ~0x10; // clear tps accel bit PTM &= ~0x10; // clear accel led outpc.engine &= ~0x20; // clear tps decel bit goto END_TPS; } if(outpc.rpm < 1500)goto END_TPS; outpc.tpsfuelcut = inpram.TPSDQ; // in % outpc.engine |= 0x20; // set tps decel bit outpc.engine &= ~0x10; // clear tps accel bit PTM &= ~0x10; // clear accel led goto END_TPS; TDE_CHK_DONE: if(outpc.engine & 0x20) { // if decelerating outpc.engine &= ~0x20; // clear tps decel bit outpc.tpsfuelcut = 100; tpsatmp = 0; } END_TPS: outpc.tpsaccel = tpsatmp; /************************************************************************** ** ** Exhaust Gas Oxygen Sensor Measurement Section ** **************************************************************************/ if( (inpram.EgoOption == 0) || (outpc.rpm < inpram.RPMOXLimit) || (outpc.engine & 0x30) || // engine accel/ decel (outpc.clt < inpram.EgoTemp) || (outpc.tps > inpram.TPSOXLimit) || (outpc.map > inpram.MAPOXLimit) || (outpc.seconds < 30)) { outpc.egocor1 = 100; outpc.egocor2 = outpc.egocor1; goto VETABLELOOKUP; } if(egocount < inpram.EgoCountCmp)goto VETABLELOOKUP; // check if rich/ lean after every EgoCountCmp ignition pulses egocount = 0; if(inpram.EgoOption == 1) { // NBO2 if(outpc.ego1 > inpram.AFRTarget) { // O2_IS_LEAN if((outpc.egocor1 + inpram.EgoStep) <= (100 + inpram.EgoLimit)) outpc.egocor1 += inpram.EgoStep; // egocor not railed } else { // O2_IS_RICH if((outpc.egocor1 - inpram.EgoStep) >= (100 - inpram.EgoLimit)) outpc.egocor1 -= inpram.EgoStep; // egocor not railed } outpc.egocor2 = outpc.egocor1; } else if(inpram.EgoOption >= 2) { // WBO2 outpc.afrtgt1 = (unsigned char)afrcalc_table(outpc.rpm, kpa, 0); // afr x 10 if(inpram.dual_tble_optn) outpc.afrtgt2 = (unsigned char)afrcalc_table(outpc.rpm, kpa, 1); // afr x 10 else outpc.afrtgt2 = outpc.afrtgt1; // first channel if(!outpc.wbo2_en1) { outpc.egocor1 = 100; goto SCNDEGO; } egostep = ((outpc.ego1 - outpc.afrtgt1) * 100)/outpc.afrtgt1; if(egostep > 0) { // O2_IS_LEAN if((outpc.egocor1 + egostep) <= (100 + inpram.EgoLimit)) outpc.egocor1 += egostep; // egocor not railed else outpc.egocor1 = 100 + inpram.EgoLimit; // railed } else { egostep = -egostep; // O2_IS_RICH if((outpc.egocor1 - egostep) >= (100 - inpram.EgoLimit)) outpc.egocor1 -= egostep; // egocor not railed else outpc.egocor1 = 100 - inpram.EgoLimit; // railed } SCNDEGO: if(!outpc.wbo2_en2) { outpc.egocor2 = 100; goto VETABLELOOKUP; } egostep = ((outpc.ego2 - outpc.afrtgt2) * 100)/outpc.afrtgt2; if(egostep > 0) { // O2_IS_LEAN if((outpc.egocor2 + egostep) <= (100 + inpram.EgoLimit)) outpc.egocor2 += egostep; // egocor not railed else outpc.egocor2 = 100 + inpram.EgoLimit; // railed } else { egostep = -egostep; // O2_IS_RICH if((outpc.egocor2 -egostep) >= (100 - inpram.EgoLimit)) outpc.egocor2 -= egostep; // egocor not railed else outpc.egocor2 = 100 - inpram.EgoLimit; // railed } } VETABLELOOKUP: // Look up volumetric efficiency as function of rpm and map (tps // in alpha N mode) outpc.vecurr1 = vecalc_table(outpc.rpm, kpa, 0); // in % if(inpram.dual_tble_optn) outpc.vecurr2 = vecalc_table(outpc.rpm, kpa, 1); // in % else { outpc.vecurr2 = outpc.vecurr1; } /************************************************************************** ** ** Computation of Fuel Parameters ** Note that GAMMAE only includes Warm, Tpsfuelcut, Barocor, and Aircor ** (EGO no longer included) ** **************************************************************************/ lsum = ((outpc.warmcor * outpc.tpsfuelcut) / 100); lsum = (lsum * ((outpc.barocor * outpc.aircor) / 100)/100); outpc.gammae = (int)lsum; if(inpram.FuelAlpha != 2) lsum2 = (long)kpa; else lsum2 = 1000; // normalizes to ~1 when divide by baro lsum1 = (lsum * ((outpc.egocor1 * lsum2) / outpc.baro)/100); lsum1 = (lsum1 * ((outpc.vecurr1 * (long)inpram.ReqFuel)/ 100)/ 100); // usec lsum2 = (lsum * ((outpc.egocor2 * lsum2) / outpc.baro)/100); lsum2 = (lsum2 * ((outpc.vecurr2 * (long)inpram.ReqFuel)/ 100)/ 100); // usec /************************************************************************** ** ** Calculation of Battery Voltage Correction for Injector Opening Time ** ** Injector open time is implemented as a linear function of ** battery voltage, from 7.2 volts to 19.2 volts, ** with 13.2 volts being the nominal operating voltage ** ** INJOPEN = injector open time at 13.2 volts in ms x 10 ** BATTFAC = injector open adjustment factor 6 volts from 13.2V in ms x 10 ** ** ** + (INJOPEN + BATTFAC) ** + * ** + (INJOPEN) ** + * ** + (INJOPEN - BATTFAC) ** + * ** + ** ++++++++++++++++++++++++++++++++++++++++++++++++++++++ ** 7.2V 13.2V 19.2 ** **************************************************************************/ pw_open = (inpram.InjOpen + inpram.BatFac) - (inpram.BatFac * (outpc.batt - 72) / 60); // ms x 10 /************************************************************************** ** ** Calculation of Final Pulse Width ** **************************************************************************/ lsum = (pw_open + outpc.tpsaccel) * 100; // usec lsum1 += lsum; // usec if(lsum1 > 32000)lsum1 = 32000; // rail at 32 ms pwcalc1 = (unsigned int)lsum1; lsum2 += lsum; // usec if(lsum2 > 32000)lsum2 = 32000; pwcalc2 = (unsigned int)lsum2; /************************************************************************** ** ** Calculation of Distributor Advance & coil charge time correction ** **************************************************************************/ DIST_ADV: lsum = ign_table(outpc.rpm, kpa) + outpc.cold_adv_deg; // deg x 10 if(inpram.RevLimOption == 1) { if(outpc.rpm > inpram.RevLimRpm2) lsum -= inpram.RevLimMaxRtd; // deg x 10 else if(outpc.rpm > inpram.RevLimRpm1) { lsum -= (((long)inpram.RevLimMaxRtd*(outpc.rpm- inpram.RevLimRpm1))/ (inpram.RevLimRpm2 - inpram.RevLimRpm1)); // deg x 10 } } ic_adv_deg = (int)(lsum - inpram.adv_offset); // relative to IC outpc.adv_deg = (int)lsum; // relative to true TDC // Base dwell tmp1 = inpram.max_coil_dur; // Add correction if accelerating if(outpc.tpsaccel > 0) tmp1 += inpram.DurAcc; // Correct for battery voltage tmp1 += coil_dur_table(outpc.batt - 120); coil_dur = tmp1; // msx10, will be used in IC Isr. // following belongs in Input Capture ISR, but this saves long div in ISR outpc.coil_dur = (int)(coil_dur_set / 100); // msx10 /*************************************************************************** ** ** Check whether to burn flash ** **************************************************************************/ BURN_FLASH: if(burn_flag > 0) { // inpram,flash comprised of three 512 byte(256 word) sectors fburner((unsigned int *)&inpflash,(unsigned int *)&inpram, sizeof(inpflash)/2); if(burn_flag >= sizeof(inpflash)/2) { burn_flag = 0; flocker = 0; } else burn_flag++; } /*************************************************************************** ** ** Check for reinit command ** **************************************************************************/ if(reinit_flag) { reinit_flag = 0; // update initialization of variables/ registers dependent on // user config inputs Rpm_Coeff = 120000000 / inpram.no_cyl; SPK = 1 - inpram.spkout_hi_lo; // 0=spk low, but inverted logic CHG = 1 - SPK; // after transistor if(!(inpram.ICIgnOption & 0x02)) trig_ret_mode = 0; else if(outpc.rpm < CRANK_RPM) trig_ret_mode = 2; TCTL4 &= ~0x03; // clear bits 0,1 if(inpram.ICIgnOption & 0x01) { // normal rising edge input capture if(!trig_ret_mode) // not trig ret mode TCTL4 |= 0x01; // rising edge input capture else // reverse in trigger return mode TCTL4 |= 0x02; // falling edge input capture } else { // normal falling edge input capture if(!trig_ret_mode) // not trig ret mode TCTL4 |= 0x02; // falling edge input capture else // reverse in trigger return mode TCTL4 |= 0x01; // rising edge input capture } // Set up SCI (rs232): SCI BR reg= BusFreq(=24MHz)/16/baudrate SCI0BDL = (unsigned char)(1500000/inpram.baud); ltmp = (150000000/inpram.baud) - ((long)SCI0BDL*100); if(ltmp > 50)SCI0BDL++; // round up } /*************************************************************************** ** ** Determine spare port settings ** **************************************************************************/ for(ix = 0;ix < NPORT; ix++) { if(inpram.spr_port[ix]) { switch(inpram.condition[ix]) { case '<': if(*((int*)(&outpc) + inpram.out_offset[ix]) < inpram.thresh[ix]) { set_spr_port((char)ix, (inpram.port_val[ix] & 0x01)); } else if(*((int*)(&outpc) + inpram.out_offset[ix]) > (inpram.thresh[ix] + inpram.hyst[ix])) { set_spr_port((char)ix, 1 - (inpram.port_val[ix] & 0x01)); } break; case '>': if(*((int*)(&outpc) + inpram.out_offset[ix]) > inpram.thresh[ix]) { set_spr_port((char)ix, (inpram.port_val[ix] & 0x01)); } else if(*((int*)(&outpc) + inpram.out_offset[ix]) < (inpram.thresh[ix] - inpram.hyst[ix])) { set_spr_port((char)ix, 1 - (inpram.port_val[ix] & 0x01)); } break; case '=': if((*((int*)(&outpc) + inpram.out_offset[ix]) <= (inpram.thresh[ix] + inpram.hyst[ix])) && (*((int*)(&outpc) + inpram.out_offset[ix]) >= (inpram.thresh[ix] - inpram.hyst[ix]))) { set_spr_port((char)ix, (inpram.port_val[ix] & 0x01)); } else { set_spr_port((char)ix, 1 - (inpram.port_val[ix] & 0x01)); } break; default: break; } // end switch } // end if spr_port } // end for ix loop /*************************************************************************** ** ** Check for serial receiver timeout ** **************************************************************************/ if(lmms > rcv_timeout) { txmode = 0; // break out of current receive sequence rcv_timeout = 0xFFFFFFFF; } } // END Main while(1) Loop } void ign_reset(void) { // enter here at init and when in stall condition // Disable IC, Ign,Inj OC interrupts TIE &= 0xD4; TSCR1 &= 0x7F; // disable all timers // reinitialize synch = 0; t_chgoff = 0xFFFFFFFF; outpc.engine = 0; outpc.rpm = 0; ICt_overflow = 0; IgnOCt_overflow = 0; Fl1OCt_overflow = 0; Fl2OCt_overflow = 0; TC_ovflow = 0; TC_ov_ix = 0; pulse_no = 0; // This will inhibit overflow counters t_enable_IC = 0xFFFFFFFF; igncount = 0; altcount = 0; egocount = 0; tpsaclk = 0; asecount = 0; if(!(inpram.ICIgnOption & 0x02)) trig_ret_mode = 0; else trig_ret_mode = 2; TCTL4 &= ~0x03; // clear bits 0,1 if(inpram.ICIgnOption & 0x01) { // normal rising edge input capture if(!trig_ret_mode) // not trig ret mode TCTL4 |= 0x01; // rising edge input capture else // reverse in trigger return mode TCTL4 |= 0x02; // falling edge input capture } else { // normal falling edge input capture if(!trig_ret_mode) // not trig ret mode TCTL4 |= 0x02; // falling edge input capture else // reverse in trigger return mode TCTL4 |= 0x01; // rising edge input capture } // if coil charging, set flg to cease aft 1 s if no resynch t_chgoff = lmms + 7812; // Turn Off injectors TCTL2 &= ~0x44; // set outputs lo in OL1,3 CFORC |= 0x0A; PWME &= ~0x14; // turn off pwms // clear OC interrupt flags TFLG1 = (0x02 | 0x08 | 0x20); PTM &= ~0x08; // turn off inj led outpc.squirt = 0; // injectors off IgnOCpinstate = SPK; // enable timer & IC interrupt TSCR1 |= 0x80; TFLG1 = 0x01; TIE |= 0x01; return; } #ifndef GCC_BUILD #pragma CODE_SEG NON_BANKED #endif INTERRUPT void ISR_Timer_Clock(void) { unsigned char coils; long adcval; int map; // .128 ms clock interrupt - clear flag immediately to resume count CRGFLG = 0x80; // clear RTI interrupt flag // also generate 1.024 ms, .10035 sec and 1.0035 sec clocks lmms++; // free running clock(.128 ms tics) good for ~ 110 hrs mms++; // in .128 ms tics - reset every 8 tics = 1.0024 ms // check for re-enabling IC interrupt if(lmms > t_enable_IC) { TFLG1 = 0x01; // clear IC interrupt flag TIE |= 0x01; // enable Ignition IC interrupt t_enable_IC = 0xFFFFFFFF; } if(lmms > t_chgoff) { // cease charging ignition coil after fuel has dispersed TCTL1 = (TCTL1 & 0xFB) | (SPK << 2); // set OC o/p in OL5 CFORC |= 0x20; // force output in OL5 onto OC pin IgnOCpinstate = SPK; t_chgoff = 0xFFFFFFFF; } // check for turning on pwm duty cycle if(!(outpc.engine & 0x02)) { // if engine not cranking if(!pwm1_on) { // and haven't started pwm if(lmms > pwm1_time) { pwm1_on = 1; PWMPER2 = inpram.InjPWMPd; // set PWM period (us) // set PWM duty (on time) PWMDTY2 = (unsigned char)((inpram.InjPWMDty * PWMPER2) / 100); } } if(!pwm2_on) { // and haven't started pwm if(lmms > pwm2_time) { pwm2_on = 1; PWMPER4 = inpram.InjPWMPd; // set PWM period (us) // set PWM duty (on time) PWMDTY4 = (unsigned char)((inpram.InjPWMDty * PWMPER4) / 100); } } } // check for IAC step pulses if(inpram.IdleCtl == 4) { iacpwmctr++; if (iacpwmctr >= 100) iacpwmctr=0; if (IACmotor_pos > iacpwmctr) PTM &= ~0x02; // turn off fast idle solenoid else PTM |= 0x02; // turn on fast idle solenoid } else { if(IAC_moving > 1) { if(lmms > motor_time) { motor_time = lmms + ((inpram.IACtstep*8)/10); // .128 ms motor_step++; if(motor_step > 7)motor_step = 0; if(IACmotor_pos > outpc.iacstep) { // cw outpc.iacstep++; coils = (IACCoilA[7-motor_step] << 6) | (IACCoilB[7-motor_step] << 7); } else { //ccw outpc.iacstep--; coils = (IACCoilA[motor_step] << 6) | (IACCoilB[motor_step] << 7); } PTT = (PTT & 0x3F) | coils; if(outpc.iacstep == IACmotor_pos) { if(!IACmotor_reset) { IACmotor_reset = 1; last_iacclt = -3200; // this will cause to go to // temperature based position after initial reset IAC_moving = 0; } else { motor_time += 32000; // delay next move for ~4 secs IAC_moving = 1; } if(inpram.IdleCtl == 2) PORTB |= 0x10; // disable current to stepper motor(bit=1) } } } else if(IAC_moving) { if(lmms > motor_time) { IAC_moving = 0; } } } // check rpm for stall condition (< 50 rpm) after engine synch if(synch) { if((lmms - ltch_lmms) > (18750/inpram.no_cyl)) { // Engine is stalled, clear all in engine PTM &= ~0x01; // Turn off fuel Pump PTM &= ~0x02; // Turn off fast idle ** Bug Fix By Guy Hill ** ign_reset(); } } // if no tach pulse within 2 sec else if((lmms - ltch_lmms) > 15625) { PTM &= ~0x01; // Turn off fuel Pump PTM &= ~0x02; // Turn off fast idle ** Bug Fix By Guy Hill ** } // check mms to generate other clocks if(mms < 8)goto CLK_DONE; mms = 0; millisec++; // actually 1.024 ms if((millisec == 49) || (millisec >= 98)) { // 50 ms calculations // get map, tps // map rolling average adcval = (long)inpram.map0 + ((long)(inpram.mapmax - inpram.map0) * ATD0DR0) / 1023; // kPa x 10 map = (short)adcval; if(inpram.MapAveno <= 1) { // no averaging outpc.map = map; } else if(map_avestate == 0) { // buffer not filled yet map_bufsum += map; map_buf[map_aveix] = map; map_aveix++; outpc.map = (int)(map_bufsum / map_aveix); if(map_aveix >= inpram.MapAveno) { map_avestate = 1; map_aveix = 0; } } else if(map_avestate == 1) { // buffer filled - add new value remove old map_bufsum += (map - map_buf[map_aveix]); map_buf[map_aveix] = map; map_aveix++; outpc.map = (int)(map_bufsum / inpram.MapAveno); if(map_aveix >= inpram.MapAveno) { map_aveix = 0; } } adcval = (ATD0DR3 - (long)inpram.tps0) * 1000 / (long)(inpram.tpsmax - inpram.tps0); // % x 10 outpc.tps = (short)adcval; // save last tps, map for calculation of tpsdot, mapdot outpc.tpsdot = 2 * (outpc.tps - last_tps); // % x 10 change per .1 sec last_tps = outpc.tps; outpc.mapdot = 2 * (map - last_map); // kPa x 10 change per .1 sec last_map = map; } // end 50 ms calculations if(millisec < 98)goto CLK_DONE; millisec = 0; tpsaclk++; // .10035 sec clock CLK_DONE: return; } #ifndef GCC_BUILD #pragma CODE_SEG DEFAULT #pragma CODE_SEG NON_BANKED #endif INTERRUPT void ISR_Ign_TimerIn(void) { static unsigned long t_in2,t_in3,dt1,dt2,dt3; long ddt2,ddt3,dddt3,tcnt; static unsigned long dtpred_old; static char missed_pulse, cut_fuel; unsigned int sched_both,rpm_pred=0,rpm=0; unsigned long ltmp1; long coil_dur_calc,old_charge; // Just received new input pulse - 1/ cyl / 2 crank revs (1 for 2 stroke) if(pulse_no == 0) { // 1st input pulse pulse_no++; ICt_overflow = 0; t_in3 = (((long)TC0<<1)/3); dt2 = 0; dt3 = 0; // time difference between pulses, us outpc.spare2 = (int)dt3; // for HP calculations ddt2 = 0; // derivative of time difference ddt3 = 0; // derivative of time difference dddt3 = 0; // 2nd derivative of time difference dtpred = dt3; // predicted time difference for next pulse ign_state = 0; missed_pulse = 0; cut_fuel = 0; // clear IC interrupt flag TFLG1 = 0x01; return; } t_chgoff = 0xFFFFFFFF; ltch_lmms = lmms; // latch RTI .128 ms clk // calculate new dt. All times in us. t_in2 = t_in3; dt1 = dt2; dt2 = dt3; t_in3 = (((long)TC0<<1)/3); if(trig_ret_mode == 1) { // transitioning out of trigger return mode if(!(TFLG2 & 0x80) || (TCNT < TC0)) // check for t overflow isr pending ICt_overflow = 0; else ICt_overflow = -1; // pending, so -1 will cause to clear in isr. // use last dt3 as prediction for next IC for this one time transition; // also leave rpm as is. dtpred_old = dtpred; dtpred = dt3; trig_ret_mode = 0; // done with trig return til ign_reset goto AVE; } // Need to test for overflow because overflow ISR < priority than // IC ISR and might be pending, so ICt_overflow not up to date. if(!(TFLG2 & 0x80) || (TCNT < TC0)) { // check for t overflow isr pending // no pending overflow isr or IC occurred < overflow if(!ICt_overflow) dt3 = t_in3 - t_in2; else { dt3 = t_in3 + ((long)ICt_overflow * 43690) - t_in2; ICt_overflow = 0; } } else { // pending overflow isr and IC after overflow dt3 = t_in3 + ((long)(ICt_overflow + 1) * 43690) - t_in2; ICt_overflow = -1; // pending, so -1 will cause to clear in isr } if(pulse_no >= inpram.no_skip_pulses) { // after 1st few pulses, start checking for missed/ extra pulses if(dt3 < ((100 - inpram.PulseTol) * dt2) / 100) { // reject false trigger t_in3 = t_in2; dt3 = dt2; outpc.spare2 = (int)dt3; // clear IC interrupt flag TFLG1 = 0x01; return; // wait for next (true) pulse } ltmp1 = ((100 + inpram.PulseTol) * dt2) / 100; if(dt3 > ltmp1) { missed_pulse++; if(missed_pulse > 2) { PTM &= ~0x01; // Turn off fuel Pump PTM &= ~0x02; // Turn off fast idle ** Bug Fix By Guy Hill ** ign_reset(); return; } // make up for missing pulse - set dt3 to last dt2 dt3 = dt2; } else { missed_pulse = 0; } } outpc.spare2 = (int)dt3; // Predict next dt - account for accel + Kalman filter for random errors if(pulse_no >= 3) { //have enough pulses to calc all derivatives synch = 1; if(!inpram.PredOpt) { dtpred_old = dtpred; outpc.spare1 = (int)(dt3 - dtpred_old); dtpred = dt3; } else if((inpram.PredOpt == 3)|| ((inpram.PredOpt == 2 ) && (dtpred_old > 2000))) { // < 7500 rpm with 8 cyl /* 0th pulse -- |- dt1 -- 1st pulse -- |- ddt2 -- |- dt2 -- |- dddt3 2nd pulse -- |_ ddt3 -- | | |- dt3 -- | |_ ddtpred 3rd pulse -- | |_ dtpred- | 4th pulse -- dtn = tn - tn-1 ddtn = (dtn - dtn-1) / ((dtn + dtn-1)/2) ddtn-1 = (dtn-1 - dtn-2) / ((dtn-1 + dtn-2)/2) dddtn = (ddtn - ddtn-1)/((((dtn + dtn-1)/2) + ((dtn-1 + dtn-2)/2))/2) ddtpred = ddtn + dddtn * dtn dtpred = dtn + ddtpred * dtn = dtn + (ddtn * dtn) + (dddtn * dtn * dtn) */ ltmp1 = dt3 + dt2; if(ltmp1 > 0) ddt3 = (long)(2*(dt3 - dt2)*dt3) / (long)ltmp1; // calculate new derivative x dt3 else ddt3 = 0; ltmp1 = dt2 + dt1; if(ltmp1 > 0) ddt2 = (long)(2*(dt2 - dt1)*dt3) / (long)ltmp1; // calculate prev derivative x dt3 else ddt2 = 0; ltmp1 += dt3 + dt2; if(ltmp1 > 0) dddt3 = (long)(4*(ddt3 - ddt2)*dt3) / (long)ltmp1; // calc 2nd derivative x dt3 else dddt3 = 0; dtpred_old = dtpred; dtpred = dt3 + ddt3 + dddt3; // pred new time interval - time bet now and next plse // predict next time interval // Kalman filter random error correction (proportional to difference // (between current dt3 and last predicted dt3). outpc.spare1 = (int)(dt3 - dtpred_old); dtpred += (inpram.Dtpred_Gain * (long)(dt3 - dtpred_old) / 100); } else { // > 7500 rpm with 8 cyl /* 1st pulse -- |- dt2 -- 2nd pulse -- |- ddt3 |- dt3 -- 3rd pulse -- | |- dtpred- 4th pulse -- dtn = tn - tn-1 ddtn = (dtn - dtn-1) / dtn dtpred = dtn + ddtn * dtn = dtn + (dtn - dtn-1) */ dtpred_old = dtpred; outpc.spare1 = (int)(dt3 - dtpred_old); dtpred = dt3 + dt3 - dt2; // pred new time interval - time bet now and next plse // predict next time interval } } else { // < 3 pulses received dtpred_old = dtpred; dtpred = dt3; } if(pulse_no < inpram.no_skip_pulses) { // skip 1st few (>1) pulses pulse_no++; // clear IC interrupt flag TFLG1 = 0x01; return; } else { if(pulse_no < 3) pulse_no++; } // calculate rpm halfway between now and next ign pulse if(dtpred > 100) rpm_pred = (unsigned int)(Rpm_Coeff / dtpred); else { // Noise or beyond rev limit, clear all in engine PTM &= ~0x01; // Turn off fuel Pump PTM &= ~0x02; // Turn off fast idle ** Bug Fix By Guy Hill ** ign_reset(); return; } rpm = (unsigned int)(Rpm_Coeff / dt3); AVE: // rolling average if(inpram.RpmAveno <= 1) { // no averaging outpc.rpm = rpm; } else if(rpm_avestate == 0) { // buffer not filled yet rpm_bufsum += rpm; rpm_buf[rpm_aveix] = rpm; rpm_aveix++; outpc.rpm = (unsigned int)(rpm_bufsum / rpm_aveix); if(rpm_aveix >= inpram.RpmAveno) { rpm_avestate = 1; rpm_aveix = 0; } } else if(rpm_avestate == 1) { // buffer filled - add new value remove old rpm_bufsum = rpm_bufsum - rpm_buf[rpm_aveix] + rpm; rpm_buf[rpm_aveix] = rpm; rpm_aveix++; outpc.rpm =(unsigned int)(rpm_bufsum / inpram.RpmAveno); if(rpm_aveix >= inpram.RpmAveno) { rpm_aveix = 0; } } // calculate ignition parameters if(trig_ret_mode == 2) { /* Example tach signal used in trigger return mode // n-2 n-1 n n+1 n+2 // lead edge(70 btdc) TDC trail edge(5 btdc) // \/ | \/ //--- -------- -------- -------- -------- // | | | | | | | | | // |__| |__| |__| |__| |_ // /\ /\ /\ /\ /\ /\ // IC & Spk IC&Spk IC&Spk IC Spk IC // |----dt-----| |----dt-----| // Cranking------->|<--------Not Cranking // /\ // transition(trig_ret_mode=1) */ // Force spark NOW TCTL1 = (TCTL1 & 0xFB) | (SPK << 2); // set OC o/p in OL5 CFORC |= 0x20; // force output in OL5 onto OC pin IgnOCpinstate = SPK; if(outpc.rpm > CRANK_RPM) { // finished cranking // transition to other edge for future ICs and out of trig ret mode if((TCTL4 & 0x03) == 0x01) TCTL4 = (TCTL4 & 0xFC) | 0x02; else if((TCTL4 & 0x03) == 0x02) TCTL4 = (TCTL4 & 0xFC) | 0x01; trig_ret_mode = 1; adv_us = 0; // don't want to do anything else til next IC on opposite edge, // then will set up to charge & spark in normal way, so disable // Ign OC interrupt. TIE &= ~0x20; goto SET_INJ; } else { adv_us = 0; coil_dur_calc = (coil_dur * 100) << 1; // us, double to be sure coil // sufficiently charged before next, possibly erratic IC charge_time = dtpred - adv_us - coil_dur_calc; // us // want to start charging coil_dur_calc usec before next predicted IC, // but don't want to discharge til next IC, so will disable OC // when start charging. } tcnt = TCNT - TC0; // TC0 is latched time at entry to ISR if(tcnt < 0)tcnt += 65535; tcnt = TC0 + tcnt + 90; // add some extra time for final reg setting IgnTimerComp = TC0 + ((3*charge_time)>>1); // 2/3 us if(IgnTimerComp < tcnt) IgnTimerComp = tcnt; ign_state = 0; ign_setpin = CHG; // use to set OC o/p in OL5 goto CHECK_OVFLO; } if((inpram.ICIgnOption >> 4) < 1) { // Normal Ignition Output // cyl n cyl n+1 // tdc tdc // |--------------- dtpred -------------------| // | __________ | // | | | | // | |-coil_dur-|----adv_us-----| // |--charge_time--| | | // |_______________| |_______________| // TC0 Spk // adv_us = ((long)16667 * ic_adv_deg) / rpm_pred; // The following limits max adv to 60 deg at 10krpm for 8 cyl and // much more for < rpm, < no. cyl. It provides enough calculation // time to do a prediction before the spark event. if(adv_us > (long)(dtpred - 500)) adv_us = (long)(dtpred - 500); // calculate time to start charging coil coil_dur_calc = coil_dur * 100; // us ltmp1 = coil_dur_calc + (inpram.max_spk_dur * 100); if(ltmp1 > dtpred) { // scale down chg/ dischg time to fit time available coil_dur_calc = (coil_dur_calc * dtpred) / ltmp1; } charge_time = (long)(dtpred - adv_us - coil_dur_calc); // us ltmp1 = dtpred - (dtpred >> 4); IgnOCpinstate = (PTIT & 0x20) >> 5; // present pin state old_charge = 0; if(charge_time > (long)ltmp1) { // charge time is > 6% of next IC; due to normal fluctuation // this could result in starting charge after IC. if(charge_time > dtpred) { // In this case switch to 'this cylinder' mode (spark on // this cylinder) adv_us += dtpred; if(IgnOCpinstate == SPK) { charge_time -= dtpred; } else { ign_state = 2; } } else { if(IgnOCpinstate == CHG) { // extend coil dur to ensure we start charging before dtpred coil_dur_calc += charge_time - ltmp1; charge_time = ltmp1; ign_state = 0; } else { old_charge = charge_time; charge_time = 0; adv_us = dtpred + adv_us; } } } } else { // EDIS Ignition Output // cyl n cyl n+1 // tdc tdc // |-------- dtpred ---------------------------| // |-delay- __________ | // | | | | // | |---SAW----| | // | | | | // |_______| |________________________| // TC0 // adv_us = 0; // send SAW pulse after delay, so we don't send // SAW while still sparking (send at 64us atdc) charge_time = 64; //us // SAW pulse calculation ltmp1 = 1536 - ((long)256 * ic_adv_deg) / 100; // multispk EDIS if((inpram.ICIgnOption >> 4) == 2) { if(first_edis) { // 1st SAW for multispk is 2048 us first_edis = 0; ltmp1 = 2048; // 1024 if ever have 10 cyl } else if(outpc.rpm < 1200) { ltmp1 += 2048; // 1024 if ever have 10 cyl } } coil_dur_calc = ltmp1; IgnOCpinstate = SPK; tcnt = TCNT - TC0; // TC0 is latched time at entry to ISR if(tcnt < 0)tcnt += 65535; tcnt = TC0 + tcnt + 90; // add some extra time for final reg setting IgnTimerComp = TC0 + ((3*charge_time)>>1); // 2/3 us if(IgnTimerComp < tcnt) IgnTimerComp = tcnt; ign_state = 0; ign_setpin = CHG; // use to set OC o/p in OL5 goto CHECK_OVFLO; } // Only get here for normal ignition output if(IgnOCpinstate == SPK) { tcnt = TCNT - TC0; // TC0 is latched time at entry to ISR if(tcnt < 0)tcnt += 65535; tcnt = TC0 + tcnt + 20; // add extra time for final reg setting IgnTimerComp = TC0 + ((3*charge_time)>>1); // 2/3 us if(IgnTimerComp < tcnt) { // transitioning to early chge (large adv) state ign_state = 2; // Charge NOW TCTL1 = (TCTL1 & 0xFB) | (CHG << 2); // set OC o/p in OL5 CFORC |= 0x20; // force output in OL5 onto OC pin IgnOCpinstate = CHG; // Set time to spark ltmp1 = (dtpred - adv_us); IgnTimerComp = TC0 + ((3*ltmp1)>>1); // 2/3 us ign_setpin = SPK; // use to set OC o/p in OL5 if(old_charge > 0) { charge_time = old_charge - ltmp1; } else { // next chge time - predicted to be prior to next pulse input charge_time += adv_us; // rel to spk event } } else { // normal state - wait til time to charge ign_state = 0; ign_setpin = CHG; // use to set OC o/p in OL5 } } else { // OC output is charging if(charge_time <= 0) { // => early chge, OC interrupt enabled // in early chge (large adv) state - stay there ign_state = 2; // Reset OC reg to update to latest spk time IgnTimerComp = TC0 + ((3*(dtpred - adv_us))>>1); // 2/3 us // next chge time charge_time += adv_us; // rel to spk event ign_setpin = SPK; } else { if(ign_state == 2) { // transitioning to normal charge state ign_state = 0; // Reset OC reg to update to latest spk time IgnTimerComp = TC0 + ((3*(dtpred - adv_us))>>1); // 2/3 us ign_setpin = SPK; } else { if(ic_adv_deg >= 0) { // IC came earlier than predicted and haven't sparked yet. FORCE_SPK: // Force spark NOW TCTL1 = (TCTL1 & 0xFB) | (SPK << 2); // set OC o/p in OL5 CFORC |= 0x20; // force output in OL5 onto OC pin IgnOCpinstate = SPK; IgnTimerComp = TC0 + ((3*charge_time)>>1); // 2/3 us ign_setpin = CHG; ign_state = 0; } else { // desired advance is atdc - update register to latest spk time IgnTimerComp = TC0 - ((3 * adv_us)>>1); // 2/3 us tcnt = TCNT - TC0; // TC0 is latched time at entry to ISR if(tcnt < 0)tcnt += 65535; tcnt = TC0 + tcnt + 90; // add some extra time to exit isr if(IgnTimerComp < tcnt) goto FORCE_SPK; charge_time += adv_us; // rel to spk event ign_setpin = SPK; ign_state = 1; } } } } // check if v. short OC reg occurs after TCNT (=free running, common // timer). tcnt = TCNT - TC0; // TC0 is latched time at entry to ISR if(tcnt < 0)tcnt += 65535; tcnt = TC0 + tcnt + 90; // add some extra time to get out of isr if(IgnTimerComp < tcnt) { if(ign_setpin == CHG) { // make spk time in OC come out exact ltmp1 = ((tcnt - IgnTimerComp)<<1)/3; // us coil_dur_calc -= ltmp1; if(coil_dur_calc < 2)coil_dur_calc = 2; } IgnTimerComp = tcnt; } CHECK_OVFLO: coil_dur_set = coil_dur_calc; if(IgnTimerComp > (long)65535) { IgnOCt_overflow = IgnTimerComp >> 16; IgnTimerComp &= 0xFFFF; } else IgnOCt_overflow = 0; if(!IgnOCt_overflow) { TC5 = (unsigned short)IgnTimerComp; // load OC compare register // Set Ign OC pin & enable interrupt TCTL1 = (TCTL1 & 0xFB) | (ign_setpin << 2); TIE |= 0x20; TFLG1 = 0x20; // clear ign OC interrupt flag } else { // Disable Ign OC interrupt until ovflow done TIE &= ~0x20; } SET_INJ: // // Set up for Injector squirt(s) if(igncount == 0) asecount++; egocount++; // Turn on fuel pump PTM |= 0x01; outpc.engine |= 0x01; // set engine running if(outpc.engine & 0x02)goto SCHED_SQUIRT; // if engine cranking igncount++; if(igncount < inpram.Divider) goto IC_EXIT; // skip Divider tach pulses SCHED_SQUIRT: igncount = 0; if(inpram.RevLimOption == 2) { if(outpc.rpm > inpram.RevLimRpm2) // Cut fuel for Over Rev cut_fuel = 1; else if(outpc.rpm < inpram.RevLimRpm1) // restore fuel cut_fuel = 0; if(cut_fuel) goto IC_EXIT; } if((outpc.engine & 0x02) || !inpram.Alternate) { // if cranking or no alternate option sched_both = 1; goto SCHED1; } sched_both = 0; altcount = 1 - altcount; if(altcount) goto SCHED2; SCHED1: // Turn On Inj1 TCTL2 |= 0x04; // set output hi in OL1 CFORC |= 0x02; // force high PWMPER2 = inpram.InjPWMPd; // set PWM period (us) PWMDTY2 = PWMPER2; // set PWM duty to 100 % pwm1_on = 0; pwm1_time = lmms + ((inpram.InjPWMTim*8)/10); // .128 ms PWMCNT2 = 0x00; // clear counter PWME |= 0x04; // enable PWM2 // Set up to turn Off Inj1 when get to pw us outpc.pw1 = pwcalc1; Fl1TimerComp = TCNT + ((3*(long)outpc.pw1)>>1); // 2/3 us Fl1OCt_overflow = (unsigned short)(Fl1TimerComp >> 16); TC1 = (unsigned short)(Fl1TimerComp & 0xFFFF); // load OC compare reg if(Fl1OCt_overflow <= 1) { // don't need to handle <= 1 overflow because TCNT will not // = TimerComp until after the overflow as long as pw < ~43 ms Fl1OCt_overflow = 0; TCTL2 = TCTL2 & 0xFB; // set output lo in OL1 TIE |= 0x02; // Enable Inj1 OC interrupt TFLG1 = 0x02; // clear OC interrupt flag } else { // Disable Inj1 OC interrupt until ovflows done // do below to allow enough time to set OC pin in overflow isr if(TC1 < 30)TC1 = 30; TIE &= ~0x02; } PTM |= 0x08; // turn on inj led outpc.squirt |= 0x01; // inj1 squirting if(!sched_both) goto IC_EXIT; SCHED2: // Turn On Inj2 TCTL2 |= 0x40; // set output hi in OL3 CFORC |= 0x08; // force high PWMPER4 = inpram.InjPWMPd; // set PWM period (us) PWMDTY4 = PWMPER4; // set PWM duty to 100 % pwm2_on = 0; pwm2_time = lmms + ((inpram.InjPWMTim*8)/10); // .128 ms PWMCNT4 = 0x00; // clear counter PWME |= 0x10; // enable PWM4 // Set up to turn Off Inj2 when get to pw us outpc.pw2 = pwcalc2; Fl2TimerComp = TCNT + ((3*(long)outpc.pw2)>>1); // 2/3 us Fl2OCt_overflow = (unsigned short)(Fl2TimerComp >> 16); TC3 = (unsigned short)(Fl2TimerComp & 0xFFFF); // load OC compare reg if(Fl2OCt_overflow <= 1) { // don't need to handle <= 1 overflow because TCNT will not // = TimerComp until after the overflow as long as pw < ~43 ms Fl2OCt_overflow = 0; TCTL2 = TCTL2 & 0xBF; // set output lo in OL3 TIE |= 0x08; // Enable Inj2 OC interrupt TFLG1 = 0x08; // clear OC interrupt flag } else { // Disable Inj2 OC interrupt until ovflows done // do below to allow enough time to set OC pin in overflow isr if(TC3 < 30)TC3 = 30; TIE &= ~0x08; } PTM |= 0x08; // turn on inj led outpc.squirt |= 0x02; // inj2 squirting IC_EXIT: // Set up to renable IC interrupt in Timer ISR at 1/2 way // to next IC to avoid coil ringing noise false interrupts t_enable_IC = ltch_lmms + ((dtpred * 8) / 2000); // .128 ms units TIE &= ~0x01; // disable interrupt TFLG1 = 0x01; // clear flag return; } #ifndef GCC_BUILD #pragma CODE_SEG DEFAULT #pragma CODE_SEG NON_BANKED #endif INTERRUPT void ISR_TimerOverflow(void) { // Get display seconds from continuously running TCNT TC_ovflow++; if(TC_ovflow >= TC_ovfla[TC_ov_ix]) { // update seconds to send back to PC outpc.seconds++; if(TC_ov_ix >= 59) { TC_ov_ix = 0; TC_ovflow = 0; } else TC_ov_ix++; } // Handle Ign IC stuff if(pulse_no == 0) { // clear Timer Overflow interrupt flag (TOF) TFLG2 = 0x80; return; } else { ICt_overflow++; } // Handle Ign OC stuff // Example: TC0 = 30K us, dt = 80K, TC0 + dt = 110k // OC reg = 110K - 65K = 45K => overflow = 1 // Timer counter goes from 30K to 65K/ 0 to 45K/ 1 // elapsed time = (65 - 30 = 35K) + 45K = 80K = dt if(IgnOCt_overflow > 0) { IgnOCt_overflow--; if(IgnOCt_overflow == 0) { // check if v. short OC reg occurs after TCNT (=free running, // common timer). Enter this isr with TCNT=0, so if needed, // add some extra time to get out of isr before OC time reached if(IgnTimerComp < TCNT + 18) IgnTimerComp = TCNT + 18; TC5 = (unsigned short)IgnTimerComp; // load OC compare register // set/ enable ign OC pin and interrupt TCTL1 = (TCTL1 & 0xFB) | (ign_setpin << 2); TIE |= 0x20; TFLG1 = 0x20; // clear ign OC interrupt flag } } // Handle Inj OC stuff if(Fl1OCt_overflow > 0) { Fl1OCt_overflow--; if(Fl1OCt_overflow == 0) { // set/ enable inj1 OC pin and interrupt TCTL2 = TCTL2 & 0xFB; // set output lo in OL1 TIE |= 0x02; TFLG1 = 0x02; // clear OC interrupt flag } } if(Fl2OCt_overflow > 0) { Fl2OCt_overflow--; if(Fl2OCt_overflow == 0) { // set/ enable inj2 OC pin and interrupt TCTL2 = TCTL2 & 0xBF; // set output lo in OL3 TIE |= 0x08; TFLG1 = 0x08; // clear OC interrupt flag } } // clear timer overflow interrupt flag (TOF) TFLG2 = 0x80; return; } #ifndef GCC_BUILD #pragma CODE_SEG DEFAULT #pragma CODE_SEG NON_BANKED #endif INTERRUPT void ISR_Ign_TimerOut(void) { long tcnt; // Enter here when ign OC reg match IgnOCpinstate = (TCTL1 & 0x04) >> 2; if(IgnOCpinstate == CHG) { // Coil has just started charging if(trig_ret_mode) { // disable ign OC interrupt - will spk on next IC TIE &= ~0x20; // clear ign OC interrupt flag TFLG1 = 0x20; return; } IgnTimerComp = TC5 + ((3*coil_dur_set)>>1); // 2/3 us ign_setpin = SPK; } else { // Coil has just started discharging (sparking) if(ign_state == 0) { // disable ign OC interrupt - chge after next IC pulse TIE &= ~0x20; // clear ign OC interrupt flag TFLG1 = 0x20; return; } else { // want to charge after done with spark IgnTimerComp = TC5 + ((3*charge_time)>>1); // 2/3 us } ign_setpin = CHG; // use to set OC o/p in OL5 } // check if v. short OC reg occurs after TCNT tcnt = TCNT - TC5; // TC5 is OC time at entry to ISR if(tcnt < 0)tcnt += 65535; tcnt = TC5 + tcnt + 12; if(IgnTimerComp < tcnt)IgnTimerComp = tcnt; if(IgnTimerComp > (long)65535) { IgnOCt_overflow = IgnTimerComp >> 16; IgnTimerComp &= 0xFFFF; } else IgnOCt_overflow = 0; if(!IgnOCt_overflow) { TC5 = (unsigned short)IgnTimerComp; // load ign OC register // enable Ign OC pin TCTL1 = (TCTL1 & 0xFB) | (ign_setpin << 2); // clear ign OC interrupt flag TFLG1 = 0x20; } else { // Disable Ign OC intrpt til ovflow done TIE &= ~0x20; } return; } #ifndef GCC_BUILD #pragma CODE_SEG DEFAULT #pragma CODE_SEG NON_BANKED #endif INTERRUPT void ISR_Inj1_TimerOut(void) { // Enter here when OC match to cease firing Inj1. // At entry here the pin will automatically turn off injector; // also turn off pwm1 (this not necessary since nanded) PWME &= ~0x04; outpc.squirt &= ~0x01; // inj1 stopped squirting if(!(outpc.squirt & 0x03)) // neither inj squirting PTM &= ~0x08; // turn off inj led // Disable Inj1 OC interrupt - will re-enable on next tach pulse TIE &= ~0x02; // clear OC interrupt flag TFLG1 = 0x02; return; } #ifndef GCC_BUILD #pragma CODE_SEG DEFAULT #pragma CODE_SEG NON_BANKED #endif INTERRUPT void ISR_Inj2_TimerOut(void) { // Enter here when OC match to cease firing Inj2. // At entry here the pin will automatically turn off injector; // also turn off pwm2 (this not necessary since nanded) PWME &= ~0x10; outpc.squirt &= ~0x02; // inj2 stopped squirting if(!(outpc.squirt & 0x03)) // neither inj squirting PTM &= ~0x08; // turn off inj led // Disable Inj2 OC interrupt - will re-enable on next tach pulse TIE &= ~0x08; // clear OC interrupt flag TFLG1 = 0x08; return; } #ifndef GCC_BUILD #pragma CODE_SEG DEFAULT #endif int move_IACmotor(void) { unsigned char coils; if(IAC_moving || (outpc.iacstep == IACmotor_pos))return 0; // set up the motor move motor_time = lmms + ((inpram.IACtstep*8)/10); // .128 ms motor_step++; if(motor_step > 7)motor_step = 0; if(IACmotor_pos > outpc.iacstep) { // cw coils = (IACCoilA[7-motor_step] << 6) | (IACCoilB[7-motor_step] << 7); } else { // ccw coils = (IACCoilA[motor_step] << 6) | (IACCoilB[motor_step] << 7); } if(inpram.IdleCtl == 2) { PORTB &= ~0x10; // enable current to motor(bit=0) } DISABLE_INTERRUPTS PTT = (PTT &0x3F) | coils; ENABLE_INTERRUPTS IAC_moving = 2; return 1; } /************************************************************************** ** ** SCI Communications ** ** Communications is established when the PC communications program sends ** a command character - the particular character sets the mode: ** ** "a" = send all of the realtime display variables (outpc structure) via txport. ** "v" = send all input parameters (inpram structure) via txport. ** "w"++++ = ** receive an updated input parameter and store in offset location ** relative to start of inpram structure ** "W" = same as "w" above, followed by "r" below ** "r"++++ = ** send back value of input parameter in offset location ** "B" = jump to flash burner routine and burn all input parameter values in ** RAM (inpram structure) into flash (inpflash structure). ** "C" = Test communications - echo back Seconds ** "Q" = Send over Embedded Code Revision Number (divide number by 10 - i.e. ** $21T is rev 2.1) ** **************************************************************************/ #ifndef GCC_BUILD #pragma CODE_SEG NON_BANKED #endif INTERRUPT void ISR_SCI_Comm(void) { char dummy; int ix; static int vfy_fail,rd_wr; // if RDRF register not set, => transmit interrupt if(!(SCI0SR1 & 0x20))goto XMT_INT; // Receive Interrupt // Clear the RDRF bit by reading SCISR1 register (done above), then read data // (in SCIDRL reg). // Check if we are receiving new input parameter update txgoal = 0; rcv_timeout = 0xFFFFFFFF; switch(txmode) { case 0: switch(SCI0DRL) { case 'a': txcnt = 0; // send back all real time variables txmode = 1; txgoal = sizeof(outpc); // load all output variables into txbuf to avoid updates memcpy(&txbuf,&outpc,sizeof(outpc)); SCI0DRL = *(char *)&txbuf; SCI0CR2 |= 0x88; // xmit enable & xmit interrupt enable break; case 'v': // send back all user inputs as they exist in RAM txcnt = 0; txmode = 3; txgoal = sizeof(inpram); SCI0DRL = *(char *)&inpram; SCI0CR2 |= 0x88; // xmit enable & xmit interrupt enable break; case 'w': // receive new user input and store in offset location txmode = 5; rd_wr = 1; break; case 'W': // same as 'w', but verify by sending back value txmode = 5; rd_wr = 2; break; case 'r': // read back input data in offset location txmode = 5; rd_wr = 0; break; case 'y': // Verify that inpflash matches inpram vfy_fail = 0; for(ix = 0; ix < sizeof(inpram); ix++) { if(*((unsigned char *)&inpflash + ix) != *((unsigned char *)&inpram + ix)) vfy_fail++; } txcnt = 0; txmode = 2; txgoal = 2; SCI0DRL = *(char *)&vfy_fail; SCI0CR2 |= 0x88; // xmit enable & xmit interrupt enable break; case 'b': // burn all existing ram input values into flash flocker = 0xCC; // set semaphore to prevent burning flash thru runaway code burn_flag =1; txmode = 0; break; case 't': // update a flash table with following serial data txmode = 20; break; case '!': // start receiving reinit/reboot command txmode = 30; break; case 'c': // send back seconds to test comms txcnt = 0; txmode = 1; txgoal = 2; // seconds is 1st 2 bytes of outpc structure txbuf.seconds = outpc.seconds; SCI0DRL = *(char *)&txbuf; SCI0CR2 |= 0x88; // xmit enable & xmit interrupt enable break; case 'Q': // send code rev no. txcnt = 0; txmode = 4; txgoal = 20; SCI0DRL = RevNum[0]; SCI0CR2 |= 0x88; // xmit enable & xmit interrupt enable break; case 'S': // send program title txcnt = 0; txmode = 5; txgoal = 32; SCI0DRL = Signature[0]; SCI0CR2 |= 0x88; // xmit enable & xmit interrupt enable break; default: break; } // End of switch for received command break; case 5: rxoffset = (SCI0DRL << 8); // byte offset(msb) from start of inpram txmode++; break; case 6: rxoffset |= SCI0DRL; // byte offset(lsb) from start of inpram txmode++; break; case 7: rxnbytes = (SCI0DRL << 8); // no. bytes (msb) txmode++; break; case 8: rxnbytes |= SCI0DRL; // no. bytes (lsb) rxcnt = 0; if(rd_wr == 0) { // read & send back data from inpram txcnt = 0; txmode = 3; txgoal = rxnbytes; SCI0DRL = *((char *)&inpram + rxoffset); SCI0CR2 |= 0x88; // xmit enable & xmit interrupt enable } else { // write data to inpram txmode++; } break; case 9: // Check for data overrun. Note: this // still not bullet proof because could write half the bytes // then have overrun; need to store and write all at once if // all is valid. if((SCI0SR1 & 0x08) == 0) // none yet- write data. *((char *)&inpram + (rxoffset + rxcnt)) = SCI0DRL; rxcnt++; if(rxcnt >= rxnbytes) { dummy = SCI0DRL; // clear OR bit (read sci0sr1(done), sci0drl) if(rd_wr == 1) txmode = 0; // done receiving all the data else { txcnt = 0; // send back inpram data just written txmode = 3; // for verification txgoal = rxnbytes; SCI0DRL = *((char *)&inpram + rxoffset); SCI0CR2 |= 0x88; // xmit enable & xmit interrupt enable } } break; case 20: // d/load & burn tables - *** Do while engine NOT turning *** tble_type = SCI0DRL; // type of table ntword = 0; flocker = 0xCC; // set semaphore to prevent burning flash thru runaway code tburner(0,tble_addr[tble_type],no_tble_words[tble_type]); // erase table flocker = 0; txmode++; break; case 21: tble_word = (SCI0DRL << 8); // msb txmode++; break; case 22: tble_word |= SCI0DRL; // lsb flocker = 0xCC; // set semaphore to prevent burning flash thru runaway code tburner(1,tble_addr[tble_type] + ntword,tble_word); // write table word flocker = 0; ntword++; if(ntword < no_tble_words[tble_type]) txmode = 21; else { txmode = 0; ign_reset(); } break; case 30: if(SCI0DRL == '!') // receive 2nd ! for reboot signal txmode++; else if(SCI0DRL == 'x') { // received reinit signal (!x) reinit_flag = 1; txmode = 0; } else txmode = 0; break; case 31: if(SCI0DRL == 'x') { // received complete reboot signal(!!x) if(outpc.rpm < CRANK_RPM) { // check not rebooting at hi rpm // go to start of bootload pgm //asm (jmp $F800); (void)reboot(); } } else if(SCI0DRL == '!') { // received complete reload signal(!!!) if(outpc.rpm < CRANK_RPM) { // check not reloading code at hi rpm SCI0CR1 = 0x00; SCI0CR2 = 0x00; // disable Tx, Rx // go to start of monitor code //asm (jmp $F842); (void)monitor(); } } txmode = 0; break; default: dummy = SCI0DRL; // dummy read of reg to clear int flag break; } // End of case switch for received data if((txgoal == 0) && (txmode > 0)) rcv_timeout = lmms + 3906; // 0.5 sec timeout return; // Transmit Interrupt XMT_INT: // Clear the TDRE bit by reading SCISR1 register (done), then write data txcnt++; if(txcnt < txgoal) { if(txmode == 3) { SCI0DRL = *((char *)&inpram + txcnt); } else if(txmode == 4) { SCI0DRL = RevNum[txcnt]; } else if(txmode == 5) { SCI0DRL = Signature[txcnt]; } else if(txmode == 2) { SCI0DRL = *((char *)&vfy_fail + txcnt); } else { SCI0DRL = *((char *)&txbuf + txcnt); } } else { // done transmitting txcnt = 0; txgoal = 0; txmode = 0; SCI0CR2 &= ~0x88; // xmit disable & xmit interrupt disable } return; } #ifndef GCC_BUILD #pragma CODE_SEG DEFAULT #endif int ign_table(unsigned int rpm, int map) { int ix,jx; long interp1, interp2, interp3; // returns advance in deg x 10 // bound input arguments if(rpm > inpram.srpm_table[NO_SRPMS-1])rpm = inpram.srpm_table[NO_SRPMS-1]; else if(rpm < inpram.srpm_table[0])rpm = inpram.srpm_table[0]; if(map > inpram.smap_table[NO_SMAPS-1])map = inpram.smap_table[NO_SMAPS-1]; else if(map < inpram.smap_table[0])map = inpram.smap_table[0]; // Look up spark advance in table for(ix = NO_SMAPS - 2; ix > -1; ix--) { // Start w highest index // because will have least time for calculations at hi maps if(map > inpram.smap_table[ix]) { break; } } if(ix < 0)ix = 0; for(jx = NO_SRPMS - 2; jx > -1; jx--) { // Start w highest index // because will have least time for calculations at hi rpms if(rpm > inpram.srpm_table[jx]) { break; } } if(jx < 0)jx = 0; interp1 = inpram.smap_table[ix + 1] - inpram.smap_table[ix]; if(interp1 != 0) { interp3 = (map - inpram.smap_table[ix]); interp3 = (100 * interp3); interp1 = interp3 / interp1; } interp2 = inpram.srpm_table[jx + 1] - inpram.srpm_table[jx]; if(interp2 != 0) { interp3 = (rpm - inpram.srpm_table[jx]); interp3 = (100 * interp3); interp2 = interp3 / interp2; } return((int)(((100 - interp1) * (100 - interp2) * inpram.adv_table[ix][jx] + interp1 * (100 - interp2) * inpram.adv_table[ix+1][jx] + interp2 * (100 - interp1) * inpram.adv_table[ix][jx+1] + interp1 * interp2 * inpram.adv_table[ix+1][jx+1]) / 10000)); // deg adv in crank - deg x10 btdc } int cold_ign_table(int clt) { int ix; long interp, interp3; // returns advance in deg x 10 // bound input arguments if(clt > inpram.temp_table[NO_TEMPS-1]) { return((int)inpram.cold_adv_table[NO_TEMPS -1]); } if(clt < inpram.temp_table[0]) { return((int)inpram.cold_adv_table[0]); } // Look up spark advance in table for(ix = NO_TEMPS - 2; ix > -1; ix--) { // Start w highest index // because that will most often be the case if(clt > inpram.temp_table[ix]) { break; } } if(ix < 0)ix = 0; interp = inpram.temp_table[ix + 1] - inpram.temp_table[ix]; if(interp != 0) { interp3 = (clt - inpram.temp_table[ix]); interp3 = (100 * interp3); interp = interp3 / interp; } return((int)(inpram.cold_adv_table[ix] + interp * (inpram.cold_adv_table[ix+1] - inpram.cold_adv_table[ix])/ 100)); // deg adv in crank - deg x10 btdc } int barocor_table(int baro) { // returns baro correction in % (100 is no correction) // baro in kPa x 10 return((int)(inpram.bcor0 + (((long)inpram.bcormult * baro) / 1000))); } int aircor_table(int mat) { // returns air density correction from equation in % (100 is no correction) // mat in deg F x10 or deg Cx10 /* Following equations used: For Farenheit, air density (pounds/cubic feet) = .0391568 x map (kPa x 10) ------------------------- ((mat(degFx10)/10) + 459.7) If we take 70 degF as standard temperature (no density correction) and ignore map, which is already accounted for elsewhere,then air density correction(%) = (70 + 459.7) x 100 ------------------ ((mat/10) + 459.7) For Celsius, with a 20 deg C reference and mat in deg C x 10 air density correction(%) = (20 + 273.2) x 100 ------------------ ((mat/10) + 273.2) */ if(inpram.Temp_Units == 0) { // deg F return((int)(529700 / (mat + 4597))); } else { // deg C return((int)(293200 / (mat + 2732))); } } int warmcor_table(int clt) { int ix; long interp, interp3; // returns warmup correction from table lookup in % (100 is no correction) // bound input arguments if(clt > inpram.temp_table[NO_TEMPS-1]) { return((int)inpram.warmen_table[NO_TEMPS -1]); } if(clt < inpram.temp_table[0]) { return((int)inpram.warmen_table[0]); } for(ix = NO_TEMPS - 2; ix > -1; ix--) { if(clt > inpram.temp_table[ix]) { break; } } if(ix < 0)ix = 0; interp = inpram.temp_table[ix + 1] - inpram.temp_table[ix]; if(interp != 0) { interp3 = (clt - inpram.temp_table[ix]); interp3 = (100 * interp3); interp = interp3 / interp; } return((int)(inpram.warmen_table[ix] + interp * (inpram.warmen_table[ix+1] - inpram.warmen_table[ix])/ 100)); } int iaccmd_table(int clt) { int ix; long interp, interp3; // returns IAC stepper motor commands from table lookup in steps as function // of clt. 0 steps is fully open (fast idle) and IACStart steps is fully closed // (slow idle). // bound input arguments if(clt > inpram.temp_table[NO_TEMPS-1]) { return((int)(inpram.IACScale *inpram.iacstep_table[NO_TEMPS -1])); } if(clt < inpram.temp_table[0]) { return((int)(inpram.IACScale *inpram.iacstep_table[0])); } for(ix = NO_TEMPS - 2; ix > -1; ix--) { if(clt > inpram.temp_table[ix]) { break; } } if(ix < 0)ix = 0; interp = inpram.temp_table[ix + 1] - inpram.temp_table[ix]; if(interp != 0) { interp3 = (clt - inpram.temp_table[ix]); interp3 = (100 * interp3); interp = interp3 / interp; } return((int)(inpram.IACScale *(inpram.iacstep_table[ix] + interp * (inpram.iacstep_table[ix+1] - inpram.iacstep_table[ix])/ 100))); } int tpscor_table(int tpsdot) { int ix; long interp, interp3; // returns tps accel pw correction from table lookup in .1 ms units // bound input arguments if(tpsdot > inpram.tpsdot_table[NO_TPS_DOTS-1]) { return((int)inpram.tpsen_table[NO_TPS_DOTS -1]); } if(tpsdot < inpram.tpsdot_table[0]) { return((int)inpram.tpsen_table[0]); } // tpsdot in % x 10 change per .10035 sec for(ix = NO_TPS_DOTS - 2; ix > -1; ix--) { if(tpsdot > inpram.tpsdot_table[ix]) { break; } } if(ix < 0)ix = 0; interp = inpram.tpsdot_table[ix + 1] - inpram.tpsdot_table[ix]; if(interp != 0) { interp3 = (tpsdot - inpram.tpsdot_table[ix]); interp3 = (100 * interp3); interp = interp3 / interp; if(interp < 0) interp = 0; } return((int)(inpram.tpsen_table[ix] + interp * (inpram.tpsen_table[ix+1] - inpram.tpsen_table[ix])/ 100)); } int mapcor_table(int mapdot) { int ix; long interp, interp3; // returns map accel pw correction from table lookup in .1 ms units // bound input arguments if(mapdot > inpram.mapdot_table[NO_MAP_DOTS-1]) { return((int)inpram.mapen_table[NO_MAP_DOTS -1]); } if(mapdot < inpram.mapdot_table[0]) { return((int)inpram.mapen_table[0]); } // mapdot in kPa x 10 change per .10035 sec for(ix = NO_MAP_DOTS - 2; ix > -1; ix--) { if(mapdot > inpram.mapdot_table[ix]) { break; } } if(ix < 0)ix = 0; interp = inpram.mapdot_table[ix + 1] - inpram.mapdot_table[ix]; if(interp != 0) { interp3 = (mapdot - inpram.mapdot_table[ix]); interp3 = (100 * interp3); interp = interp3 / interp; if(interp < 0)interp = 0; } return((int)(inpram.mapen_table[ix] + interp * (inpram.mapen_table[ix+1] - inpram.mapen_table[ix])/ 100)); } int vecalc_table(unsigned int rpm, int map, char inj) { int ix,jx; long interp1, interp2, interp3; // returns VE in % x 10 // bound input arguments if(rpm > inpram.frpm_table[NO_FRPMS-1])rpm = inpram.frpm_table[NO_FRPMS-1]; else if(rpm < inpram.frpm_table[0])rpm = inpram.frpm_table[0]; if(map > inpram.fmap_table[NO_FMAPS-1])map = inpram.fmap_table[NO_FMAPS-1]; else if(map < inpram.fmap_table[0])map = inpram.fmap_table[0]; // Look up VE in table for(ix = NO_FMAPS - 2; ix > -1; ix--) { // Start w highest index // because will have least time for calculations at hi maps if(map > inpram.fmap_table[ix]) { break; } } if(ix < 0)ix = 0; for(jx = NO_FRPMS - 2; jx > -1; jx--) { // Start w highest index // because will have least time for calculations at hi rpms if(rpm > inpram.frpm_table[jx]) { break; } } if(jx < 0)jx = 0; interp1 = inpram.fmap_table[ix + 1] - inpram.fmap_table[ix]; if(interp1 != 0) { interp3 = (map - inpram.fmap_table[ix]); interp3 = (100 * interp3); interp1 = interp3 / interp1; } interp2 = inpram.frpm_table[jx + 1] - inpram.frpm_table[jx]; if(interp2 != 0) { interp3 = (rpm - inpram.frpm_table[jx]); interp3 = (100 * interp3); interp2 = interp3 / interp2; } return((int)(((100 - interp1) * (100 - interp2) * inpram.ve_table[(int)inj][ix][jx] + interp1 * (100 - interp2) * inpram.ve_table[(int)inj][ix+1][jx] + interp2 * (100 - interp1) * inpram.ve_table[(int)inj][ix][jx+1] + interp1 * interp2 * inpram.ve_table[(int)inj][ix+1][jx+1]) / 10000)); // VE in % } int afrcalc_table(unsigned int rpm, int map, char inj) { int ix,jx; long interp1, interp2, interp3; // returns AFR x 10 // bound input arguments if(rpm > inpram.frpm_table[NO_FRPMS-1])rpm = inpram.frpm_table[NO_FRPMS-1]; else if(rpm < inpram.frpm_table[0])rpm = inpram.frpm_table[0]; if(map > inpram.fmap_table[NO_FMAPS-1])map = inpram.fmap_table[NO_FMAPS-1]; else if(map < inpram.fmap_table[0])map = inpram.fmap_table[0]; // Look up AFR in table for(ix = NO_FMAPS - 2; ix > -1; ix--) { // Start w highest index // because will have least time for calculations at hi maps if(map > inpram.fmap_table[ix]) { break; } } if(ix < 0)ix = 0; for(jx = NO_FRPMS - 2; jx > -1; jx--) { // Start w highest index // because will have least time for calculations at hi rpms if(rpm > inpram.frpm_table[jx]) { break; } } if(jx < 0)jx = 0; interp1 = inpram.fmap_table[ix + 1] - inpram.fmap_table[ix] ; if(interp1 != 0) { interp3 = (map - inpram.fmap_table[ix]); interp3 = (100 * interp3); interp1 = interp3 / interp1; } interp2 = inpram.frpm_table[jx + 1] - inpram.frpm_table[jx]; if(interp2 != 0) { interp3 = (rpm - inpram.frpm_table[jx]); interp3 = (100 * interp3); interp2 = interp3 / interp2; } return((int)(((100 - interp1) * (100 - interp2) * inpram.afr_table[(int)inj][ix][jx] + interp1 * (100 - interp2) * inpram.afr_table[(int)inj][ix+1][jx] + interp2 * (100 - interp1) * inpram.afr_table[(int)inj][ix][jx+1] + interp1 * interp2 * inpram.afr_table[(int)inj][ix+1][jx+1]) / 10000)); // AFR x 10 } int alphcalc_table(unsigned int rpm, int tps) { int ix,jx; long interp1, interp2, interp3; // returns kPa x 10 for alpha-N option // bound input arguments if(rpm > inpram.amap_rpm[6-1])rpm = inpram.amap_rpm[6-1]; else if(rpm < inpram.amap_rpm[0])rpm = inpram.amap_rpm[0]; if(tps > inpram.amap_tps[6-1])tps = inpram.amap_tps[6-1]; else if(tps < inpram.amap_tps[0])tps = inpram.amap_tps[0]; // Look up tps in table for(ix = 6 - 2; ix > -1; ix--) { // Start w highest index // because will have least time for calculations at hi tps if(tps > inpram.amap_tps[ix]) { break; } } if(ix < 0)ix = 0; for(jx = 6 - 2; jx > -1; jx--) { // Start w highest index // because will have least time for calculations at hi rpms if(rpm > inpram.amap_rpm[jx]) { break; } } if(jx < 0)jx = 0; interp1 = inpram.amap_tps[ix + 1] - inpram.amap_tps[ix]; if(interp1 != 0) { interp3 = (tps - inpram.amap_tps[ix]); interp3 = (100 * interp3); interp1 = interp3 / interp1; } interp2 = inpram.amap_rpm[jx + 1] - inpram.amap_rpm[jx]; if(interp2 != 0) { interp3 = (rpm - inpram.amap_rpm[jx]); interp3 = (100 * interp3); interp2 = interp3 / interp2; } return((int)(((100 - interp1) * (100 - interp2) * inpram.alpha_map_table[ix][jx] + interp1 * (100 - interp2) * inpram.alpha_map_table[ix+1][jx] + interp2 * (100 - interp1) * inpram.alpha_map_table[ix][jx+1] + interp1 * interp2 * inpram.alpha_map_table[ix+1][jx+1]) / 10000)); // kpa x 10 } int coil_dur_table(int delta_volt) { int ix; long interp, interp3; // returns correction for coil duration vs battery voltage deviation // from 12 V from table lookup in .1 ms units // bound input arguments if(delta_volt > inpram.deltV_table[NO_COILCHG_PTS-1]) { return((int)inpram.deltDur_table[NO_COILCHG_PTS-1]); } if(delta_volt < inpram.deltV_table[0]) { return((int)inpram.deltDur_table[0]); } // delta_volt in V x 10 for(ix = NO_COILCHG_PTS - 2; ix > -1; ix--) { if(delta_volt > inpram.deltV_table[ix]) { break; } } if(ix < 0)ix = 0; interp = inpram.deltV_table[ix + 1] - inpram.deltV_table[ix]; if(interp != 0) { interp3 = (delta_volt - inpram.deltV_table[ix]); interp3 = (100 * interp3); interp = interp3 / interp; if(interp < 0)interp = 0; } return((int)(inpram.deltDur_table[ix] + interp * (inpram.deltDur_table[ix+1] - inpram.deltDur_table[ix])/ 100)); } void set_spr_port(char port, char val) { switch(port) { case 0: if(val) PTM |= 0x04; // PTM bit2 = 1 else PTM &= ~0x04; // PTM bit2 = 0 break; case 1: if(val) PORTE |= 0x10; // PTE bit4 = 1 else PORTE &= ~0x10; // PTE bit4 = 0 break; default: break; } } #ifndef GCC_BUILD #pragma CODE_SEG NON_BANKED __interrupt void UnimplementedISR(void) { /* Unimplemented ISRs trap.*/ return; } #pragma CODE_SEG DEFAULT #endif /****************************************************************************** Arguments: progAdr Pointer to the start of the destination Flash location to be programmed bufferPtr Pointer to the start of the source data size Number of WORDS to be programmed This function will program non-paged flash only ******************************************************************************/ void fburner(unsigned int* progAdr, unsigned int* bufferPtr, unsigned int no_words) { unsigned char sect,no_sectors; if(flocker != 0xCC)return; // if not set, we got here unintentionally // sector = 512 bytes (256 words) if(burn_flag == 1) { no_sectors = (no_words/256) + 1; for (sect = 0; sect < no_sectors; sect++) { Flash_Erase_Sector(progAdr + sect * 256); } } Flash_Write_Word(progAdr + burn_flag-1, *(bufferPtr + burn_flag-1)); return; } /* Burn tables in flash one sector at time */ void tburner(char erase_write, unsigned int* addr, unsigned int wrd) { unsigned char sect; if(flocker != 0xCC)return; // if not set, we got here unintentionally if(erase_write == 0) { // in this mode word= no words in table // This number must be multiple of sector words (256) for (sect = 0; sect < wrd/256; sect++) { Flash_Erase_Sector(addr + sect * 256); } } else { Flash_Write_Word(addr, wrd); } return; } //***************************************************************************** //* Function Name: Flash_Init //* Description : Initialize Flash NVM for HCS12 by programming //* FCLKDIV based on passed oscillator frequency, then //* uprotect the array, and finally ensure PVIOL and //* ACCERR are cleared by writing to them. //* //***************************************************************************** void Flash_Init(unsigned long oscclk) { unsigned char fclk_val; unsigned long temp; /* Next, initialize FCLKDIV register to ensure we can program/erase */ temp = oscclk; if (oscclk >= 12000) { fclk_val = oscclk/8/200 - 1; /* FDIV8 set since above 12MHz clock */ FCLKDIV = FCLKDIV | fclk_val | FDIV8; } else { fclk_val = oscclk/8/200 - 1; FCLKDIV = FCLKDIV | fclk_val; } FPROT = 0xFF; /* Disable all protection (only in special modes)*/ FSTAT = FSTAT | (PVIOL|ACCERR);/* Clear any errors */ return; } void Flash_Erase_Sector(unsigned int *address) { FSTAT = (ACCERR | PVIOL); // clear errors (*address) = 0xFFFF;/* Dummy store to page to be erased */ FCMD = ERASE; (void)DoOnStack(address); return; } void Flash_Write_Word(unsigned int *address, unsigned int data) { FSTAT = (ACCERR | PVIOL); // clear errors (*address) = data; // Store desired data to address being programmed FCMD = PROG; // Store programming command in FCMD (void)DoOnStack(address); // just passed for PPAGE return; }