Working on rewriting how we acquire data from LTC chip and sending all temp data over serial for python logging
Fork of TCTF_Control_Main by
Diff: main.cpp
- Revision:
- 6:c980535393ed
- Parent:
- 5:0f38a0bd4f86
- Child:
- 7:8a5e65e63e2a
--- a/main.cpp Thu Mar 01 21:13:55 2018 +0000 +++ b/main.cpp Wed Mar 07 18:50:10 2018 +0000 @@ -3,30 +3,32 @@ #include "mbed.h" #include "MODSERIAL.h" -#include "MCP23008.h" +#include "MCP23008.h"A #include "LTC2487.h" #include <string> //DEFINITIVE VARIABLES -#define DEBUG 0 -#define DEBUG1 1 -#define DEBUG2 1 -#define DEBUG3 1 -#define CHN_COUNT 8 -#define MIN_TEMP 15 -#define MAX_TEMP 60 -#define HYST 0.2 -#define SAMPLES 5 -#define I2C_Freq 2000 -#define VALVE 1 -#define HEATER 2 -#define STATUS_GOOD 3 -#define STATUS_BAD 4 -#define sizeLUT 34 -#define FRONT_THERM 0 -#define BACK_THERM 1 -#define HEAT_FET_AMP 2 -#define VALV_FET_AMP 3 +#define DEBUG 0 +#define DEBUG1 1 +#define DEBUG2 1 +#define DEBUG3 1 +#define CHN_COUNT 8 +#define MIN_TEMP 15 +#define MAX_TEMP 60 +#define TEMP_MARGIN 2 +#define HYST 0.5 +#define SAMPLES 5 +#define I2C_Freq 2000 +#define VALVE 1 +#define HEATER 2 +#define STATUS_GOOD 3 +#define STATUS_BAD 4 +#define sizeLUT 34 +#define FRONT_THERM 0 +#define BACK_THERM 1 +#define HEAT_FET_AMP 2 +#define VALV_FET_AMP 3 +#define FET_ON_CURRENT 1.12 //TCTF CHANNEL DATA @@ -36,14 +38,14 @@ }; CHNL_DATA chnlStatus[] = { - {1, 40}, - {1, 40}, - {1, 40}, + {1, 15}, + {1, 20}, + {1, 25}, + {1, 30}, + {1, 35}, + {1, 0}, {1, 40}, - {1, 40}, - {1, 40}, - {1, 40}, - {1, 40}, + {1, 45}, {0, NULL}, {0, NULL}, {0, NULL}, @@ -307,8 +309,8 @@ Returns: the current into the heater control MOSFET */ -float get_heater_current(int chn){ - return 0.0; +float get_heater_current(int chn, int port){ + return ltc2487.readOutput(port); } /* Function: get_valve_current @@ -318,8 +320,8 @@ Returns: the current into the valve control MOSFET */ -float get_valve_current(int chn){ - return 0.0; +float get_valve_current(int chn, int port){ + return ltc2487.readOutput(port); } /* Function: turn_valve_on @@ -423,34 +425,61 @@ void test_ltc2487(int chn){ get_temp(chn, FRONT_THERM); wait(0.1); - //get_temp(chn, BACK_THERM); - //wait(0.1); - //get_temp(chn, VALV_FET_AMP); - //wait(0.1); + get_temp(chn, BACK_THERM); + wait(0.1); + get_temp(chn, VALV_FET_AMP); + wait(0.1); //if(DEBUG1) pc.printf("TEMPERATURE READING: %f \r\n", get_temp(chn)); } -void test_all_IO(){ - test_mcp23008(0); - test_mcp23008(1); - test_mcp23008(2); - test_mcp23008(3); - test_mcp23008(4); - test_mcp23008(5); - test_mcp23008(6); - test_mcp23008(7); +/* Function: error_check + ************************************************************** + Description: Checks for any system errors + Recieves: frontTemp: + backTemp: + valveFet: + heaterFet: + Returns: N/A +*/ + +void error_check(int chn, float frontTemp, float backTemp, float valveFet, float heaterFet){ + float setTemp = chnlStatus[chn].setTemp; + + //CHECK IF THERMISTOR READINGS ARE OFF (< 2 DEGREES) + if(abs(frontTemp-backTemp) > 2){ + //ERROR 6: Thermistor reading off + } + + //CHECK IF HEATER'S STUCK ON OR CELL OVERHEATING + if((frontTemp >= (setTemp+TEMP_MARGIN)) || (backTemp >= (setTemp+TEMP_MARGIN))){ + //ERROR 0 + status_led(chn, STATUS_BAD); + if(heaterFet >= FET_ON_CURRENT){ + //ERROR 1: Heater FET stuck on + } + if(valveFet <= FET_ON_CURRENT){ + //ERROR 1: valve FET stuck off + } + } + + //CHECK IF VALVE STUCK ON OR CELL OVERHEATING + if((frontTemp <= (setTemp-TEMP_MARGIN)) || (backTemp <= (setTemp-TEMP_MARGIN))){ + //ERROR 0 + status_led(chn, STATUS_BAD); + if(heaterFet <= FET_ON_CURRENT){ + //ERROR 2: Heater FET stuck off + } + else if(valveFet >= FET_ON_CURRENT){ + //ERROR 3: Chiller FET stuck on + } + } } -void test_all_ADC(){ - test_ltc2487(0); - test_ltc2487(1); - test_ltc2487(2); - test_ltc2487(3); - test_ltc2487(4); - test_ltc2487(5); - test_ltc2487(6); - test_ltc2487(7); -} + + +/*************************************************************/ +/* MAIN FUNCTION */ +/*************************************************************/ int main() { @@ -475,6 +504,7 @@ while(1) { + //test_all_IO(); if(DEBUG3) pc.printf("THE PROGRAM STARTED \r\n"); //check if we recieved data/need to update TCTF data @@ -489,22 +519,19 @@ for(int chnl = 0; chnl < CHN_COUNT; chnl++){ //wait(2.5); float currentTempFront = get_temp(chnl, FRONT_THERM); - //float currentTempBack = get_temp(chnl, BACK_THERM); + float currentTempBack = get_temp(chnl, BACK_THERM); + float currentTemp = (currentTempFront + currentTempBack)/2; //CONTROL LOOP: if(chnlStatus[chnl].status == 1){ if(DEBUG3) pc.printf("TEMP: %f \r\n", currentTempFront); - if(currentTempFront > ((chnlStatus[chnl].setTemp)+HYST)){ + if(currentTemp > ((chnlStatus[chnl].setTemp)+HYST)){ if(DEBUG3) pc.printf("CHILLER ON \r\n"); - //Turn heater off - //turn_heater_off(chnl); //Turn chiller on turn_valve_on(chnl); } - else if (currentTempFront < ((chnlStatus[chnl].setTemp)-HYST)){ + else if (currentTemp < ((chnlStatus[chnl].setTemp)-HYST)){ if(DEBUG3) pc.printf("HEATER ON \r\n"); - //Turn chiller off - turn_valve_off(chnl); //Turn heater on turn_heater_on(chnl); }