/* Speeduino - Simple engine management for the Arduino Mega 2560 platform Copyright (C) Josh Stewart A full copy of the license may be found in the projects root directory */ /* Returns how much free dynamic memory exists (between heap and stack) */ #include "utils.h" int freeRam () { extern int __heap_start, *__brkval; int v; return (int) &v - (__brkval == 0 ? (int) &__heap_start : (int) __brkval); } void setPinMapping(byte boardID) { switch (boardID) { case 0: //Pin mappings as per the v0.1 shield pinInjector1 = 8; //Output pin injector 1 is on pinInjector2 = 9; //Output pin injector 2 is on pinInjector3 = 11; //Output pin injector 3 is on pinInjector4 = 10; //Output pin injector 4 is on pinCoil1 = 6; //Pin for coil 1 pinCoil2 = 7; //Pin for coil 2 pinCoil3 = 12; //Pin for coil 3 pinCoil4 = 13; //Pin for coil 4 pinTrigger = 2; //The CAS pin pinTPS = A0; //TPS input pin pinMAP = A1; //MAP sensor pin pinIAT = A2; //IAT sensor pin pinCLT = A3; //CLS sensor pin pinO2 = A4; //O2 Sensor pin break; case 1: //Pin mappings as per the v0.2 shield pinInjector1 = 8; //Output pin injector 1 is on pinInjector2 = 9; //Output pin injector 2 is on pinInjector3 = 10; //Output pin injector 3 is on pinInjector4 = 11; //Output pin injector 4 is on pinCoil1 = 28; //Pin for coil 1 pinCoil2 = 24; //Pin for coil 2 pinCoil3 = 40; //Pin for coil 3 pinCoil4 = 36; //Pin for coil 4 pinTrigger = 20; //The CAS pin pinTrigger2 = 21; //The Cam Sensor pin pinTPS = A2; //TPS input pin pinMAP = A3; //MAP sensor pin pinIAT = A0; //IAT sensor pin pinCLT = A1; //CLS sensor pin pinO2 = A8; //O2 Sensor pin pinBat = A4; //Battery reference voltage pin pinDisplayReset = 48; // OLED reset pin break; case 2: //Pin mappings as per the v0.3 shield pinInjector1 = 8; //Output pin injector 1 is on pinInjector2 = 9; //Output pin injector 2 is on pinInjector3 = 10; //Output pin injector 3 is on pinInjector4 = 11; //Output pin injector 4 is on pinCoil1 = 28; //Pin for coil 1 pinCoil2 = 24; //Pin for coil 2 pinCoil3 = 40; //Pin for coil 3 pinCoil4 = 36; //Pin for coil 4 pinTrigger = 19; //The CAS pin pinTrigger2 = 18; //The Cam Sensor pin pinTPS = A2;//TPS input pin pinMAP = A3; //MAP sensor pin pinIAT = A0; //IAT sensor pin pinCLT = A1; //CLS sensor pin pinO2 = A8; //O2 Sensor pin pinBat = A4; //Battery reference voltage pin pinDisplayReset = 48; // OLED reset pin pinTachOut = 49; //Tacho output pin pinIdle1 = 5; //Single wire idle control pinFuelPump = 4; //Fuel pump output break; case 3: //Pin mappings as per the v0.4 shield pinInjector1 = 8; //Output pin injector 1 is on pinInjector2 = 9; //Output pin injector 2 is on pinInjector3 = 10; //Output pin injector 3 is on pinInjector4 = 11; //Output pin injector 4 is on pinCoil1 = 40; //Pin for coil 1 pinCoil2 = 38; //Pin for coil 2 pinCoil3 = 52; //Pin for coil 3 pinCoil4 = 50; //Pin for coil 4 pinTrigger = 19; //The CAS pin pinTrigger2 = 18; //The Cam Sensor pin pinTPS = A2;//TPS input pin pinMAP = A3; //MAP sensor pin pinIAT = A0; //IAT sensor pin pinCLT = A1; //CLS sensor pin pinO2 = A8; //O2 Sensor pin pinBat = A4; //Battery reference voltage pin pinDisplayReset = 48; // OLED reset pin pinTachOut = 49; //Tacho output pin pinIdle1 = 5; //Single wire idle control pinFuelPump = 45; //Fuel pump output pinStepperDir = 16; //Direction pin for DRV8825 driver pinStepperStep = 17; //Step pin for DRV8825 driver break; case 10: //Pin mappings for user turtanas PCB pinInjector1 = 4; //Output pin injector 1 is on pinInjector2 = 5; //Output pin injector 2 is on pinInjector3 = 6; //Output pin injector 3 is on pinInjector4 = 7; //Output pin injector 4 is on pinInjector5 = 8; //Placeholder only - NOT USED pinInjector6 = 9; //Placeholder only - NOT USED pinInjector7 = 10; //Placeholder only - NOT USED pinInjector8 = 11; //Placeholder only - NOT USED pinCoil1 = 24; //Pin for coil 1 pinCoil2 = 28; //Pin for coil 2 pinCoil3 = 36; //Pin for coil 3 pinCoil4 = 40; //Pin for coil 4 pinTrigger = 18; //The CAS pin pinTrigger2 = 19; //The Cam Sensor pin pinTPS = A2;//TPS input pin pinMAP = A3; //MAP sensor pin pinMAP2 = A8; //MAP2 sensor pin pinIAT = A0; //IAT sensor pin pinCLT = A1; //CLS sensor pin pinO2 = A4; //O2 Sensor pin pinBat = A7; //Battery reference voltage pin pinDisplayReset = 48; // OLED reset pin pinSpareTemp1 = A6; pinSpareTemp2 = A5; pinTachOut = 41; //Tacho output pin transistori puuttuu 2n2222 tähän ja 1k 12v pinFuelPump = 42; //Fuel pump output 2n2222 break; case 20: //Pin mappings as per the Plazomat In/Out shields Rev 0.1 pinInjector1 = 8; //Output pin injector 1 is on pinInjector2 = 9; //Output pin injector 2 is on pinInjector3 = 10; //Output pin injector 3 is on pinInjector4 = 11; //Output pin injector 4 is on pinCoil1 = 28; //Pin for coil 1 pinCoil2 = 24; //Pin for coil 2 pinCoil3 = 40; //Pin for coil 3 pinCoil4 = 36; //Pin for coil 4 pinSpareOut1 = 4; //Spare LSD Output 1(PWM) pinSpareOut2 = 5; //Spare LSD Output 2(PWM) pinSpareOut3 = 6; //Spare LSD Output 3(PWM) pinSpareOut4 = 7; //Spare LSD Output 4(PWM) pinSpareOut5 = 50; //Spare LSD Output 5(digital) pinSpareOut6 = 52; //Spare LSD Output 6(digital) pinTrigger = 20; //The CAS pin pinTrigger2 = 21; //The Cam Sensor pin pinSpareTemp2 = A15; //spare Analog input 2 pinSpareTemp1 = A14; //spare Analog input 1 pinO2 = A8; //O2 Sensor pin pinBat = A4; //Battery reference voltage pin pinMAP = A3; //MAP sensor pin pinTPS = A2;//TPS input pin pinCLT = A1; //CLS sensor pin pinIAT = A0; //IAT sensor pin case 30: //Pin mappings as per the dazv6 shield pinInjector1 = 8; //Output pin injector 1 is on pinInjector2 = 9; //Output pin injector 2 is on pinInjector3 = 10; //Output pin injector 3 is on pinInjector4 = 11; //Output pin injector 4 is on //pinInjector5 = 12; //Placeholder only - NOT USED //pinInjector6 = 13; //Placeholder only - NOT USED pinCoil1 = 40; //Pin for coil 1 pinCoil2 = 38; //Pin for coil 2 pinCoil3 = 50; //Pin for coil 3 pinCoil4 = 52; //Pin for coil 4 pinTrigger = 19; //The CAS pin pinTrigger2 = 18; //The Cam Sensor pin pinTrigger3 = 17; // cam sensor 2 pin pinTPS = A2;//TPS input pin pinMAP = A3; //MAP sensor pin pinIAT = A0; //IAT sensor pin pinCLT = A1; //CLS sensor pin pinO2 = A8; //O2 Sensor pin pinO2_2 = A9; //O2 sensor pin (second sensor) pinBat = A4; //Battery reference voltage pin pinDisplayReset = 48; // OLED reset pin pinTachOut = 49; //Tacho output pin pinIdle1 = 5; //Single wire idle control pinFuelPump = 45; //Fuel pump output pinSpareHOut1 = 4; // high current output spare1 pinSpareHOut2 = 6; // high current output spare2 pinBoost = 7; pinSpareLOut1 = 43; //low current output spare1 pinSpareLOut2 = 47; pinSpareLOut3 = 49; pinSpareLOut4 = 51; pinSpareLOut5 = 53; break; default: //Pin mappings as per the v0.2 shield pinInjector1 = 8; //Output pin injector 1 is on pinInjector2 = 9; //Output pin injector 2 is on pinInjector3 = 10; //Output pin injector 3 is on pinInjector4 = 11; //Output pin injector 4 is on pinCoil1 = 28; //Pin for coil 1 pinCoil2 = 24; //Pin for coil 2 pinCoil3 = 40; //Pin for coil 3 pinCoil4 = 36; //Pin for coil 4 pinTrigger = 20; //The CAS pin pinTrigger2 = 21; //The Cam Sensor pin pinTPS = A2; //TPS input pin pinMAP = A3; //MAP sensor pin pinIAT = A0; //IAT sensor pin pinCLT = A1; //CLS sensor pin pinO2 = A8; //O2 Sensor pin pinBat = A4; //Battery reference voltage pin pinDisplayReset = 48; // OLED reset pin break; } //Finally, set the relevant pin modes for outputs pinMode(pinCoil1, OUTPUT); pinMode(pinCoil2, OUTPUT); pinMode(pinCoil3, OUTPUT); pinMode(pinCoil4, OUTPUT); pinMode(pinInjector1, OUTPUT); pinMode(pinInjector2, OUTPUT); pinMode(pinInjector3, OUTPUT); pinMode(pinInjector4, OUTPUT); pinMode(pinTachOut, OUTPUT); pinMode(pinIdle1, OUTPUT); pinMode(pinIdle2, OUTPUT); pinMode(pinFuelPump, OUTPUT); pinMode(pinLaunch, INPUT_PULLUP); inj1_pin_port = portOutputRegister(digitalPinToPort(pinInjector1)); inj1_pin_mask = digitalPinToBitMask(pinInjector1); inj2_pin_port = portOutputRegister(digitalPinToPort(pinInjector2)); inj2_pin_mask = digitalPinToBitMask(pinInjector2); inj3_pin_port = portOutputRegister(digitalPinToPort(pinInjector3)); inj3_pin_mask = digitalPinToBitMask(pinInjector3); inj4_pin_port = portOutputRegister(digitalPinToPort(pinInjector4)); inj4_pin_mask = digitalPinToBitMask(pinInjector4); //And for inputs pinMode(pinMAP, INPUT); pinMode(pinO2, INPUT); pinMode(pinO2_2, INPUT); pinMode(pinTPS, INPUT); pinMode(pinIAT, INPUT); pinMode(pinCLT, INPUT); pinMode(pinBat, INPUT); pinMode(pinTrigger, INPUT); pinMode(pinTrigger2, INPUT); pinMode(pinTrigger3, INPUT); // digitalWrite(pinMAP, HIGH); //digitalWrite(pinO2, LOW); digitalWrite(pinTPS, LOW); } /* This function retuns a pulsewidth time (in us) using a either Alpha-N or Speed Density algorithms, given the following: REQ_FUEL VE: Lookup from the main MAP vs RPM fuel table MAP: In KPa, read from the sensor GammaE: Sum of Enrichment factors (Cold start, acceleration). This is a multiplication factor (Eg to add 10%, this should be 110) injDT: Injector dead time. The time the injector take to open minus the time it takes to close (Both in uS) TPS: Throttle position (0% to 100%) This function is called by PW_SD and PW_AN for speed0density and pure Alpha-N calculations respectively. */ unsigned int PW(int REQ_FUEL, byte VE, byte MAP, int corrections, int injOpen, byte TPS) { //Standard float version of the calculation //return (REQ_FUEL * (float)(VE/100.0) * (float)(MAP/100.0) * (float)(TPS/100.0) * (float)(corrections/100.0) + injOpen); //Note: The MAP and TPS portions are currently disabled, we use VE and corrections only //100% float free version, does sacrifice a little bit of accuracy. int iVE = ((int)VE << 7) / 100; //int iVE = divs100( ((int)VE << 7)); //int iMAP = ((int)MAP << 7) / 100; int iCorrections = (corrections << 7) / 100; //int iTPS = ((int)TPS << 7) / 100; unsigned long intermediate = ((long)REQ_FUEL * (long)iVE) >> 7; //Need to use an intermediate value to avoid overflowing the long //intermediate = (intermediate * iMAP) >> 7; intermediate = (intermediate * iCorrections) >> 7; //intermediate = (intermediate * iTPS) >> 7; intermediate += injOpen; //Add the injector opening time if ( intermediate > 65535) { intermediate = 65535; //Make sure this won't overflow when we convert to uInt. This means the maximum pulsewidth possible is 65.535mS } return (unsigned int)(intermediate); } //Convenience functions for Speed Density and Alpha-N unsigned int PW_SD(int REQ_FUEL, byte VE, byte MAP, int corrections, int injOpen) { //return PW(REQ_FUEL, VE, MAP, corrections, injOpen, 100); //Just use 1 in place of the TPS return PW(REQ_FUEL, VE, 100, corrections, injOpen, 100); //Just use 1 in place of the TPS } unsigned int PW_AN(int REQ_FUEL, byte VE, byte TPS, int corrections, int injOpen) { //Sanity check if(TPS > 100) { TPS = 100; } //return PW(REQ_FUEL, VE, 100, corrections, injOpen, TPS); //Just use 1 in place of the MAP return PW(REQ_FUEL, VE, 100, corrections, injOpen, 100); //Just use 1 in place of the MAP }