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