Ian Wolf / Mbed OS HSPFLOWFINAL

Dependencies:   KellerDruck_pressure PID PWM-Coil-driver Sensirion_SF04 VL6180

Fork of HSPFLOWFINAL by jack kemnitz

main.cpp@0:67debf2ccbc2, 2017-07-07 (annotated)

Committer:
dmwahl
Date:
Fri Jul 07 20:52:31 2017 +0000
Revision:
0:67debf2ccbc2
Child:
1:d58df8cb271d
Pressure sensors, display, airflow, input pots working

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dmwahl 0:67debf2ccbc2 1 #include "main.h"
dmwahl 0:67debf2ccbc2 2
dmwahl 0:67debf2ccbc2 3 void pumpTachTrigger()
dmwahl 0:67debf2ccbc2 4 {
dmwahl 0:67debf2ccbc2 5 pumpTachCounts++;
dmwahl 0:67debf2ccbc2 6 }
dmwahl 0:67debf2ccbc2 7
dmwahl 0:67debf2ccbc2 8 void pump_tach_update()
dmwahl 0:67debf2ccbc2 9 {
dmwahl 0:67debf2ccbc2 10 float i = pumpTachCounts; // In case it triggers mid-calculation
dmwahl 0:67debf2ccbc2 11 pumpTachCounts = 0;
dmwahl 0:67debf2ccbc2 12 pumpRpm = (i/pumpTachPoles)*60;
dmwahl 0:67debf2ccbc2 13 }
dmwahl 0:67debf2ccbc2 14
dmwahl 0:67debf2ccbc2 15 void pump_init()
dmwahl 0:67debf2ccbc2 16 {
dmwahl 0:67debf2ccbc2 17 pump.period(.001); // 1kHz PWM
dmwahl 0:67debf2ccbc2 18 pump = 0;
dmwahl 0:67debf2ccbc2 19 ledGrn.period(.001);
dmwahl 0:67debf2ccbc2 20
dmwahl 0:67debf2ccbc2 21 InterruptIn pumpTach(pumpTachPin);
dmwahl 0:67debf2ccbc2 22 pumpTach.rise(&pumpTachTrigger);
dmwahl 0:67debf2ccbc2 23
dmwahl 0:67debf2ccbc2 24 pump_control_PID.setInputLimits(pumpMinPSI, pumpMaxPSI);
dmwahl 0:67debf2ccbc2 25 pump_control_PID.setOutputLimits(0.0, 1.0); // Output is a PWM signal ranging from 0-1
dmwahl 0:67debf2ccbc2 26 pump_control_PID.setMode(AUTO_MODE);
dmwahl 0:67debf2ccbc2 27 pump_control_PID.setSetPoint(((double)pot2)*pumpMaxPSI); // pump setpoint based on pot 2*/
dmwahl 0:67debf2ccbc2 28 }
dmwahl 0:67debf2ccbc2 29
dmwahl 0:67debf2ccbc2 30 void pump_pid_update(char error)
dmwahl 0:67debf2ccbc2 31 {
dmwahl 0:67debf2ccbc2 32 if (pumpPressure.status != 0x40) {
dmwahl 0:67debf2ccbc2 33 pump = 0;
dmwahl 0:67debf2ccbc2 34 pump_control_PID.reset();
dmwahl 0:67debf2ccbc2 35 } else {
dmwahl 0:67debf2ccbc2 36 pump_control_PID.setSetPoint(((double)pot2)*pumpMaxPSI);
dmwahl 0:67debf2ccbc2 37
dmwahl 0:67debf2ccbc2 38 //Update the process variable.
dmwahl 0:67debf2ccbc2 39 pump_control_PID.setProcessValue(pumpPressure.pressurePSI);
dmwahl 0:67debf2ccbc2 40 //PID calculation and set the new output value.
dmwahl 0:67debf2ccbc2 41 pump = pump_control_PID.compute();
dmwahl 0:67debf2ccbc2 42 //pump = 0.1;
dmwahl 0:67debf2ccbc2 43 ledGrn = ((float)1.0-pump.read());
dmwahl 0:67debf2ccbc2 44 }
dmwahl 0:67debf2ccbc2 45 }
dmwahl 0:67debf2ccbc2 46
dmwahl 0:67debf2ccbc2 47 void update_pressures()
dmwahl 0:67debf2ccbc2 48 {
dmwahl 0:67debf2ccbc2 49 Timer timer;
dmwahl 0:67debf2ccbc2 50 timer.start();
dmwahl 0:67debf2ccbc2 51 char error;
dmwahl 0:67debf2ccbc2 52 while (true) {
dmwahl 0:67debf2ccbc2 53 i2c1_m.lock();
dmwahl 0:67debf2ccbc2 54 timer.reset();
dmwahl 0:67debf2ccbc2 55 error = pumpPressure.readPT();
dmwahl 0:67debf2ccbc2 56 int wait = (200 - timer.read_ms());
dmwahl 0:67debf2ccbc2 57 i2c1_m.unlock();
dmwahl 0:67debf2ccbc2 58 Thread::wait(wait);
dmwahl 0:67debf2ccbc2 59 pump_pid_update(error);
dmwahl 0:67debf2ccbc2 60 }
dmwahl 0:67debf2ccbc2 61 }
dmwahl 0:67debf2ccbc2 62
dmwahl 0:67debf2ccbc2 63 void update_airflow()
dmwahl 0:67debf2ccbc2 64 {
dmwahl 0:67debf2ccbc2 65 Timer timer;
dmwahl 0:67debf2ccbc2 66 timer.start();
dmwahl 0:67debf2ccbc2 67 char error;
dmwahl 0:67debf2ccbc2 68 while (true) {
dmwahl 0:67debf2ccbc2 69 i2c2_m.lock();
dmwahl 0:67debf2ccbc2 70 timer.reset();
dmwahl 0:67debf2ccbc2 71 error = sfm7033.Measure(FLOW);
dmwahl 0:67debf2ccbc2 72 int wait = (200 - timer.read_ms());
dmwahl 0:67debf2ccbc2 73 i2c2_m.unlock();
dmwahl 0:67debf2ccbc2 74 Thread::wait(wait);
dmwahl 0:67debf2ccbc2 75 }
dmwahl 0:67debf2ccbc2 76 }
dmwahl 0:67debf2ccbc2 77
dmwahl 0:67debf2ccbc2 78 void print_process_values()
dmwahl 0:67debf2ccbc2 79 {
dmwahl 0:67debf2ccbc2 80 //Thread::wait(100); // Wait initially to allow sensors to update, prevents a zero reading from going to serial
dmwahl 0:67debf2ccbc2 81 Timer timer;
dmwahl 0:67debf2ccbc2 82 timer.start();
dmwahl 0:67debf2ccbc2 83 while (true) {
dmwahl 0:67debf2ccbc2 84 stdio_m.lock();
dmwahl 0:67debf2ccbc2 85 timer.reset();
dmwahl 0:67debf2ccbc2 86 /*pc.printf("%.3fkPa %.2fPSI %.1fC %.1fF %02X %.2f%% %.0fRPM %.0f %s %.1f %.3f\n\r",
dmwahl 0:67debf2ccbc2 87 pumpPressure.pressureKPA, pumpPressure.pressurePSI, pumpPressure.temperatureC,
dmwahl 0:67debf2ccbc2 88 pumpPressure.temperatureF, pumpPressure.status, pump.read()*100, pumpRpm,
dmwahl 0:67debf2ccbc2 89 ((float)sfm7033.flow.i16 / sfm7033.scaleFactor.u16), sfm7033.flowUnitStr, (double)pot1*18, ((double)pot2-.002)*pumpMaxPSI);*/
dmwahl 0:67debf2ccbc2 90
dmwahl 0:67debf2ccbc2 91 pc.printf("%.02fkPa %.02fpsi %.02fC %.02fF %02X %.2f%% %.0fRPM %u %.0f %s %.1f %.3f\r\n",
dmwahl 0:67debf2ccbc2 92 pumpPressure.pressureKPA, pumpPressure.pressurePSI, pumpPressure.temperatureC, pumpPressure.temperatureF, pumpPressure.status, pump.read()*100, pumpRpm, sfm7033.flow.u16, (((float)sfm7033.flow.i16 / 2) / sfm7033.scaleFactor.u16), sfm7033.flowUnitStr, (double)pot1*18, ((double)pot2)*pumpMaxPSI);
dmwahl 0:67debf2ccbc2 93 int wait = (1000 - timer.read_ms());
dmwahl 0:67debf2ccbc2 94 stdio_m.unlock();
dmwahl 0:67debf2ccbc2 95 Thread::wait(wait);
dmwahl 0:67debf2ccbc2 96 }
dmwahl 0:67debf2ccbc2 97 }
dmwahl 0:67debf2ccbc2 98
dmwahl 0:67debf2ccbc2 99 void update_lcd()
dmwahl 0:67debf2ccbc2 100 {
dmwahl 0:67debf2ccbc2 101 Timer timer;
dmwahl 0:67debf2ccbc2 102 timer.start();
dmwahl 0:67debf2ccbc2 103 while (true) {
dmwahl 0:67debf2ccbc2 104 float flow = ((((float)sfm7033.flow.i16 / 2) / sfm7033.scaleFactor.u16) < 0 ? 0 : (((float)sfm7033.flow.i16 / 2) / sfm7033.scaleFactor.u16));
dmwahl 0:67debf2ccbc2 105 flow = flow/1000;
dmwahl 0:67debf2ccbc2 106 stdio_m.lock();
dmwahl 0:67debf2ccbc2 107 timer.reset();
dmwahl 0:67debf2ccbc2 108 lcd.cls();
dmwahl 0:67debf2ccbc2 109 lcd.font((unsigned char*)ArialR12x14);
dmwahl 0:67debf2ccbc2 110 lcd.locate(0, 0);
dmwahl 0:67debf2ccbc2 111 lcd.printf("%.2f slpm AA: %.1f", flow, (double)pot1*18);
dmwahl 0:67debf2ccbc2 112 lcd.locate(0, 14);
dmwahl 0:67debf2ccbc2 113 lcd.printf("PV: %.0f", pumpPressure.pressurePSI);
dmwahl 0:67debf2ccbc2 114 lcd.locate(64, 14);
dmwahl 0:67debf2ccbc2 115 lcd.printf("SV: %.0f", ((double)pot2)*pumpMaxPSI);
dmwahl 0:67debf2ccbc2 116 int wait = (1000 - timer.read_ms());
dmwahl 0:67debf2ccbc2 117 stdio_m.unlock();
dmwahl 0:67debf2ccbc2 118 Thread::wait(wait);
dmwahl 0:67debf2ccbc2 119 }
dmwahl 0:67debf2ccbc2 120 }
dmwahl 0:67debf2ccbc2 121
dmwahl 0:67debf2ccbc2 122 // main() runs in its own thread in the OS
dmwahl 0:67debf2ccbc2 123 int main()
dmwahl 0:67debf2ccbc2 124 {
dmwahl 0:67debf2ccbc2 125 pump_init();
dmwahl 0:67debf2ccbc2 126 ledBlu = 1;
dmwahl 0:67debf2ccbc2 127 pc.printf("Serenity Starting up...\n\r");
dmwahl 0:67debf2ccbc2 128 /*pc.printf("Pmin: %.03f Pmax: %.03f\r\n", pumpPressure.pmin, pumpPressure.pmax);
dmwahl 0:67debf2ccbc2 129 pc.printf("Year: %d Month: %d Day: %d Mode: %d\r\n", pumpPressure.year, pumpPressure.month, pumpPressure.day, pumpPressure.mode);
dmwahl 0:67debf2ccbc2 130 pc.printf("Status: 0x%x\r\n", pumpPressure.getStatus());*/
dmwahl 0:67debf2ccbc2 131
dmwahl 0:67debf2ccbc2 132 // Thread to poll pressure sensors
dmwahl 0:67debf2ccbc2 133 update_pressures_t.set_priority(osPriorityNormal);
dmwahl 0:67debf2ccbc2 134 update_pressures_t.start(update_pressures);
dmwahl 0:67debf2ccbc2 135
dmwahl 0:67debf2ccbc2 136 // Thread to poll airflow sensor
dmwahl 0:67debf2ccbc2 137 update_airflow_t.set_priority(osPriorityNormal);
dmwahl 0:67debf2ccbc2 138 update_airflow_t.start(update_airflow);
dmwahl 0:67debf2ccbc2 139
dmwahl 0:67debf2ccbc2 140 // Thread to update lcd
dmwahl 0:67debf2ccbc2 141 update_lcd_t.set_priority(osPriorityIdle);
dmwahl 0:67debf2ccbc2 142 update_lcd_t.start(update_lcd);
dmwahl 0:67debf2ccbc2 143
dmwahl 0:67debf2ccbc2 144 // Thread to send process values to serial port
dmwahl 0:67debf2ccbc2 145 print_process_values_t.set_priority(osPriorityLow);
dmwahl 0:67debf2ccbc2 146 print_process_values_t.start(&print_process_values);
dmwahl 0:67debf2ccbc2 147
dmwahl 0:67debf2ccbc2 148
dmwahl 0:67debf2ccbc2 149
dmwahl 0:67debf2ccbc2 150 while (true) {
dmwahl 0:67debf2ccbc2 151 //pc.printf("%.02fkPa %.02fpsi %.02fC %.02fF\r\n", pumpPressure.pressureKPA, pumpPressure.pressurePSI, pumpPressure.temperatureC, pumpPressure.temperatureF);
dmwahl 0:67debf2ccbc2 152 Thread::wait(1000);
dmwahl 0:67debf2ccbc2 153 }
dmwahl 0:67debf2ccbc2 154 }
dmwahl 0:67debf2ccbc2 155