203 lines
8.0 KiB
C++
203 lines
8.0 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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These functions over the PWM and stepper idle control
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*/
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/*
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Idle Control
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Currently limited to on/off control and open loop PWM and stepper drive
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*/
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void initialiseIdle()
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{
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//Initialising comprises of setting the 2D tables with the relevant values from the config pages
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switch(configPage4.iacAlgorithm)
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{
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case 0:
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//Case 0 is no idle control ('None')
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break;
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case 1:
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//Case 1 is on/off idle control
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if (currentStatus.coolant < configPage4.iacFastTemp)
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{
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digitalWrite(pinIdle1, HIGH);
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}
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break;
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case 2:
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//Case 2 is PWM open loop
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iacPWMTable.xSize = 10;
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iacPWMTable.valueSize = SIZE_BYTE;
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iacPWMTable.values = configPage4.iacOLPWMVal;
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iacPWMTable.axisX = configPage4.iacBins;
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iacCrankDutyTable.xSize = 4;
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iacCrankDutyTable.values = configPage4.iacCrankDuty;
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iacCrankDutyTable.axisX = configPage4.iacCrankBins;
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break;
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case 3:
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//Case 3 is PWM closed loop
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iacClosedLoopTable.xSize = 10;
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iacClosedLoopTable.values = configPage4.iacCLValues;
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iacClosedLoopTable.axisX = configPage4.iacBins;
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iacCrankDutyTable.xSize = 4;
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iacCrankDutyTable.values = configPage4.iacCrankDuty;
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iacCrankDutyTable.axisX = configPage4.iacCrankBins;
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break;
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case 4:
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//Case 2 is Stepper open loop
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iacStepTable.xSize = 10;
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iacStepTable.valueSize = SIZE_BYTE;
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iacStepTable.values = configPage4.iacOLStepVal;
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iacStepTable.axisX = configPage4.iacBins;
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iacCrankStepsTable.xSize = 4;
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iacCrankStepsTable.values = configPage4.iacCrankSteps;
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iacCrankStepsTable.axisX = configPage4.iacCrankBins;
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iacStepTime = configPage4.iacStepTime * 1000;
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homeStepper(); //Returns the stepper to the 'home' position
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idleStepper.stepperStatus = SOFF;
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break;
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case 5:
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//Case 5 is Stepper closed loop
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iacClosedLoopTable.xSize = 10;
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iacClosedLoopTable.values = configPage4.iacCLValues;
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iacClosedLoopTable.axisX = configPage4.iacBins;
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iacCrankStepsTable.xSize = 4;
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iacCrankStepsTable.values = configPage4.iacCrankSteps;
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iacCrankStepsTable.axisX = configPage4.iacCrankBins;
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iacStepTime = configPage4.iacStepTime * 1000;
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homeStepper(); //Returns the stepper to the 'home' position
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idleStepper.stepperStatus = SOFF;
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break;
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}
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}
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void idleControl()
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{
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switch(configPage4.iacAlgorithm)
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{
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case 0: //Case 0 is no idle control ('None')
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break;
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case 1: //Case 1 is on/off idle control
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if ( (currentStatus.coolant + CALIBRATION_TEMPERATURE_OFFSET) < configPage4.iacFastTemp) //All temps are offset by 40 degrees
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{
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digitalWrite(pinIdle1, HIGH);
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idleOn = true;
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}
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else if (idleOn) { digitalWrite(pinIdle1, LOW); idleOn = false; }
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break;
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case 2: //Case 2 is PWM open loop
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//Check for cranking pulsewidth
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if( BIT_CHECK(currentStatus.engine, BIT_ENGINE_CRANK) )
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{
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//Currently cranking. Use the cranking table
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analogWrite(pinIdle1, table2D_getValue(&iacCrankDutyTable, currentStatus.coolant + CALIBRATION_TEMPERATURE_OFFSET)); //All temps are offset by 40 degrees
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idleOn = true;
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}
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else if( (currentStatus.coolant + CALIBRATION_TEMPERATURE_OFFSET) < iacPWMTable.values[IDLE_TABLE_SIZE-1])
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{
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//Standard running
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analogWrite(pinIdle1, table2D_getValue(&iacPWMTable, currentStatus.coolant + CALIBRATION_TEMPERATURE_OFFSET)); //All temps are offset by 40 degrees
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idleOn = true;
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}
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else if (idleOn) { digitalWrite(pinIdle1, LOW); idleOn = false; }
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break;
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case 3: //Case 3 is PWM closed loop (Not currently implemented)
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break;
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case 4: //Case 4 is open loop stepper control
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//First thing to check is whether there is currently a step going on and if so, whether it needs to be turned off
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if(idleStepper.stepperStatus == STEPPING || idleStepper.stepperStatus == COOLING)
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{
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if(micros() > (idleStepper.stepStartTime + iacStepTime) )
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{
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if(idleStepper.stepperStatus == STEPPING)
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{
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//Means we're currently in a step, but it needs to be turned off
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digitalWrite(pinStepperStep, LOW); //Turn off the step
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idleStepper.stepStartTime = micros();
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idleStepper.stepperStatus = COOLING; //'Cooling' is the time the stepper needs to sit in LOW state before the next step can be made
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return;
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}
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else
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{
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//Means we're in COOLING status. We need to remain in this state for the step time before the next step can be taken
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idleStepper.stepperStatus = SOFF;
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}
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}
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else
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{
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//Means we're in a step, but it doesn't need to turn off yet. No further action at this time
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return;
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}
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}
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//Check for cranking pulsewidth
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if( BIT_CHECK(currentStatus.engine, BIT_ENGINE_CRANK) )
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{
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//Currently cranking. Use the cranking table
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idleStepper.targetIdleStep = table2D_getValue(&iacCrankStepsTable, (currentStatus.coolant + CALIBRATION_TEMPERATURE_OFFSET)) * 3; //All temps are offset by 40 degrees. Step counts are divided by 3 in TS. Multiply back out here
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if ( idleStepper.targetIdleStep > (idleStepper.curIdleStep - configPage4.iacStepHyster) && idleStepper.targetIdleStep < (idleStepper.curIdleStep + configPage4.iacStepHyster) ) { return; } //Hysteris check
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else if(idleStepper.targetIdleStep < idleStepper.curIdleStep) { digitalWrite(pinStepperDir, STEPPER_BACKWARD); idleStepper.curIdleStep--; }//Sets stepper direction to backwards
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else if (idleStepper.targetIdleStep > idleStepper.curIdleStep) { digitalWrite(pinStepperDir, STEPPER_FORWARD); idleStepper.curIdleStep++; }//Sets stepper direction to forwards
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digitalWrite(pinStepperStep, HIGH);
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idleStepper.stepStartTime = micros();
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idleStepper.stepperStatus = STEPPING;
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idleOn = true;
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}
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else if( (currentStatus.coolant + CALIBRATION_TEMPERATURE_OFFSET) < iacStepTable.axisX[IDLE_TABLE_SIZE-1])
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{
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//Standard running
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idleStepper.targetIdleStep = table2D_getValue(&iacStepTable, (currentStatus.coolant + CALIBRATION_TEMPERATURE_OFFSET)) * 3; //All temps are offset by 40 degrees. Step counts are divided by 3 in TS. Multiply back out here
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if ( idleStepper.targetIdleStep > (idleStepper.curIdleStep - configPage4.iacStepHyster) && idleStepper.targetIdleStep < (idleStepper.curIdleStep + configPage4.iacStepHyster) ) { return; } //Hysteris check
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else if(idleStepper.targetIdleStep < idleStepper.curIdleStep) { digitalWrite(pinStepperDir, STEPPER_BACKWARD); idleStepper.curIdleStep--; }//Sets stepper direction to backwards
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else if (idleStepper.targetIdleStep > idleStepper.curIdleStep) { digitalWrite(pinStepperDir, STEPPER_FORWARD); idleStepper.curIdleStep++; }//Sets stepper direction to forwards
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digitalWrite(pinStepperStep, HIGH);
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idleStepper.stepStartTime = micros();
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idleStepper.stepperStatus = STEPPING;
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idleOn = true;
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}
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break;
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}
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}
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/*
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A simple function to home the stepper motor (If in use)
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*/
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void homeStepper()
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{
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//Need to 'home' the stepper on startup
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digitalWrite(pinStepperDir, STEPPER_BACKWARD); //Sets stepper direction to backwards
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for(int x=0; x < (configPage4.iacStepHome * 3); x++) //Step counts are divided by 3 in TS. Multiply back out here
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{
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digitalWrite(pinStepperStep, HIGH);
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delayMicroseconds(iacStepTime);
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digitalWrite(pinStepperStep, LOW);
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delayMicroseconds(iacStepTime);
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}
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digitalWrite(pinStepperDir, STEPPER_FORWARD);
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idleStepper.curIdleStep = 0;
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idleStepper.targetIdleStep = 0;
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idleStepper.stepperStatus = SOFF;
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}
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