Rivian Irvine Team
Control Code with I/O and ADC working
Diff: main.cpp
- Revision:
- 16:82d941b1ef21
- Parent:
- 15:74a01aaeb60e
- Child:
- 17:96c064f773ab
--- a/main.cpp Mon Jun 11 21:10:14 2018 +0000
+++ b/main.cpp Wed Jun 20 00:30:48 2018 +0000
@@ -9,30 +9,33 @@
#include <string>
//DEFINITIVE VARIABLES
-#define DEBUG 0
-#define DEBUG1 0
-#define DEBUG2 0
-#define DEBUG3 1
-#define DEBUG5 0
-#define CHN_COUNT 8
-#define MIN_TEMP 10
-#define MAX_TEMP 65
-#define TEMP_MARGIN 20
-#define HYST_LOW 0.3
-#define HYST_HIGH 1
-#define SAMPLES 5
-#define I2C_Freq 2000
-#define VALVE 1
-#define HEATER 2
-#define STATUS_GOOD 3
-#define STATUS_BAD 0
-#define sizeLUT 34
-#define BACK_THERM 0
-#define FRONT_THERM 1
-#define HEAT_FET_AMP 2
-#define VALVE_FET_AMP 3
-#define FET_ON_CURRENT 1.12
-#define ROOM_TEMP 22
+#define DEBUG 0
+#define DEBUG1 0
+#define DEBUG2 0
+#define DEBUG3 0
+#define DEBUG5 0
+#define UID_PRINT 1
+#define TEMP_PRINT 0
+#define LOOP_TIME 0
+#define CHN_COUNT 8
+#define MIN_TEMP 10
+#define MAX_TEMP 65
+#define TEMP_MARGIN 20
+#define HYST_LOW 0.3
+#define HYST_HIGH 1
+#define SAMPLES 5
+#define I2C_Freq 2000
+#define VALVE 1
+#define HEATER 2
+#define STATUS_GOOD 3
+#define STATUS_BAD 0
+#define sizeLUT 34
+#define BACK_THERM 0
+#define FRONT_THERM 1
+#define HEAT_FET_AMP 2
+#define VALVE_FET_AMP 3
+#define FET_ON_CURRENT 1.12
+#define ROOM_TEMP 22
#define MAX_HEATER_ON_TIME 25
#define MAX_CHILL_TIME 10 //10sec
@@ -95,6 +98,15 @@
} RESPONSE_CMD;
typedef struct {
+ unsigned char SOF_flag;
+ unsigned char cmd_type;
+ unsigned char len;
+ unsigned char Delim;
+ float chTemp[CHN_COUNT];
+ unsigned char EOF_flag;
+} RESPONSE_TEMP_CMD;
+
+typedef struct {
HOST_CMD_HEADER cmd_header;
unsigned char chanIDSel;
unsigned char chanDelim;
@@ -272,6 +284,14 @@
{2284,125}
};
+//TCTF CHANNEL TEMPERATURE
+typedef struct{
+ float currTempFront;
+ float currTempBack;
+}CHNL_TEMP;
+
+CHNL_TEMP channelTempData[CHN_COUNT];
+
//SERIAL COMMUNICATION SETUP
MODSERIAL pc(USBTX, USBRX);
@@ -415,21 +435,18 @@
}
}
-
-
/* Function: get_temp
**************************************************************
- Description: Retrieve data from thermistor
- Receives: chn: the channel of the fixture to read temp. from
- port: the I/O channel to read
- Returns: the temperature of the fixture (front or back)
+ Description: Convert A/D count to temperature value
+ Receives: ADC_val: the count from the A/D reading
+ Returns: the temp. of the A/D reading
*/
-float get_temp(int chn, int port){
+float get_temp(float ADC_val){
myled = 1;
- ltc2487.setAddress(addrLUT[chn].adc);
+ //ltc2487.setAddress(addrLUT[chn].adc);
- float ADC_val = ltc2487.readOutput(port); //(65536*1.334)/2.5
+ //float ADC_val = ltc2487.readOutput(port); //(65536*1.334)/2.5
int i = 0;
@@ -447,11 +464,44 @@
float m = a/b;
float y = (m*(ADC_val-thermLUT[i].adc))+thermLUT[i].temp;
- if(DEBUG2) pc.printf("DBG: CHAN: %i PORT: %i ADC VAL: %f TEMP: %f \r\n", chn, port, ADC_val, y);
+ if(DEBUG3) pc.printf("DBG: ADC VAL: %f TEMP: %f \r\n", ADC_val, y);
return y;
}
+/* Function: get_temp_DATA
+ **************************************************************
+ Description: Read A/D data from LTC2487 and set array with front and back temp.
+ Receives: N/A
+ Returns: N/A
+*/
+
+void get_temp_data(){
+ //Write to all 8 channels selecting the front port to read
+ for(int chnl = 0; chnl < CHN_COUNT; chnl++){
+ ltc2487.setAddress(addrLUT[chnl].adc);
+ ltc2487.writePort(FRONT_THERM);
+ }
+ //wait until next clock cycle on LTC
+ wait(0.08);
+ for(int chnl = 0; chnl < CHN_COUNT; chnl++){
+ ltc2487.setAddress(addrLUT[chnl].adc);
+ channelTempData[chnl].currTempFront = get_temp(ltc2487.read());
+ }
+ //wait until next clock cycle on LTC
+ wait(0.08);
+ for(int chnl = 0; chnl < CHN_COUNT; chnl++){
+ ltc2487.setAddress(addrLUT[chnl].adc);
+ ltc2487.writePort(BACK_THERM);
+ }
+ //wait until next clock cycle on LTC
+ wait(0.08);
+ for(int chnl = 0; chnl < CHN_COUNT; chnl++){
+ ltc2487.setAddress(addrLUT[chnl].adc);
+ channelTempData[chnl].currTempBack = get_temp(ltc2487.read());
+ }
+}
+
/* Function: get_heater_current
**************************************************************
Description: Retrieve current into heater control MOSFET
@@ -460,7 +510,11 @@
*/
float get_heater_current(int chn, int port){
- return ltc2487.readOutput(port);
+ ltc2487.setAddress(addrLUT[chn].adc);
+ ltc2487.writePort(HEAT_FET_AMP);
+ wait(0.08);
+ ltc2487.read();
+ wait(0.08);
}
/* Function: get_valve_current
@@ -471,7 +525,11 @@
*/
float get_valve_current(int chn, int port){
- return ltc2487.readOutput(port);
+ ltc2487.setAddress(addrLUT[chn].adc);
+ ltc2487.writePort(VALVE_FET_AMP);
+ wait(0.08);
+ ltc2487.read();
+ wait(0.08);
}
/* Function: turn_valve_on
@@ -573,30 +631,37 @@
Returns: N/A
*/
-void test_ltc2487(int chn){
- get_temp(chn, FRONT_THERM);
- wait(0.1);
- get_temp(chn, BACK_THERM);
- wait(0.1);
- get_temp(chn, VALVE_FET_AMP);
- wait(0.1);
- //if(DEBUG1) pc.printf("TEMPERATURE READING: %f \r\n", get_temp(chn));
+void test_ltc2487(){
+ for(int chnl = 0; chnl < CHN_COUNT; chnl++){
+ float frontTemp = channelTempData[chnl].currTempFront;
+ float backTemp = channelTempData[chnl].currTempBack;
+ pc.printf("TEMPERATURE READING [%i]:: BACK: %f FRONT: %f \r\n", chnl, backTemp, frontTemp);
+ }
}
//***************************************************************
// Build packet with temperature readings to send to GUI
//***************************************************************
-void sendTempReadings (int chan, float currentTemp)
-{
- RESPONSE_CMD response;
+void sendTempReadings(){
+ RESPONSE_TEMP_CMD response;
unsigned char *ptr = (unsigned char *)&response;
int i;
response.SOF_flag = TX_SOF;
response.cmd_type = TEMP_DATA;
- response.len = 9;
+ response.len = 5+(sizeof(response.chTemp));
response.Delim = DELIMETER;
- response.data = (float)currentTemp;
+ response.chTemp[0] = channelTempData[0].currTempBack;
+ response.chTemp[1] = channelTempData[1].currTempBack;
+ response.chTemp[2] = channelTempData[2].currTempBack;
+ response.chTemp[3] = channelTempData[3].currTempBack;
+ response.chTemp[4] = channelTempData[4].currTempBack;
+ response.chTemp[5] = channelTempData[5].currTempBack;
+ response.chTemp[6] = channelTempData[6].currTempBack;
+ response.chTemp[7] = channelTempData[7].currTempBack;
+ /*float *dst = (float *)&response.chTemp[0];
+ float *src = (float *)&channelTempData[0];
+ memcpy(dst, src, sizeof(channelTempData));*/
response.EOF_flag = TX_EOF;
// Send response to GUI
@@ -739,12 +804,12 @@
UIDL = (uint32_t)SIM->UIDL;
while(1) {
-
- if(DEBUG3) {
+ //test_mcp23008(0);
+ if(UID_PRINT) {
pc.printf("DBG: <%f>[UID: %04X%08X%08X] PSTARTED\n", t.read(), UIDMH, UIDML, UIDL);
}
- //setup timer used to track how long the heater is on
+ //SETUP TIMER USED TO TRACK HOW LONG THE HEATER IS ON
float time_sec = t.read();
if(time_sec >= 60){
@@ -756,11 +821,18 @@
if(time_min >= 60){
time_min = 0;
}
-
- //pc.printf("Time: %f \r\n", time_sec);
+
+ //GET TEMPERATURE DATA
+ get_temp_data();
+ //SEND TEMPERATURE DATA FOR LOGGING
+ sendTempReadings();
+
+ time_sec = t.read();
+ if(LOOP_TIME) pc.printf("\r TIME: %f s\r\n", time_sec);
+
+ //CONTROL LOOP: LOOPS THROUGH EVERY CHANNEL AND CONTROLS THE FIXTURE IN RESPONSE
for(int chnl = 0; chnl < CHN_COUNT; chnl++){
- float currentTempFront = get_temp(chnl, FRONT_THERM);
//check if we received data/need to update TCTF data
if(dataReceived){
@@ -773,53 +845,32 @@
pc.rxBufferFlush();
}
- float currentTempBack = get_temp(chnl, BACK_THERM);
+ //update channel temperature data
+ float currentTempFront = channelTempData[chnl].currTempFront;
+ float currentTempBack = channelTempData[chnl].currTempBack;
+
+ //float currentTempBack = get_temp(chnl, BACK_THERM);
float currentTemp = currentTempBack;
- if (chnl == chanSel_SendTemp){
- //Send temp readings for selected chan to GUI
- sendTempReadings(currChan, currentTemp);
- }
-
//Error check on fixture
error_check(chnl, currentTempFront, currentTempBack, time_min);
+ if(TEMP_PRINT) pc.printf("DBG: TEMPERATURE: [%d] Temp: F: %f B: %f\r\n", chnl, currentTempFront, currentTempBack);
+
//CONTROL LOOP:
if(chnlStatus[chnl].status == 1){
if(DEBUG) pc.printf("DBG: [%d] Temp: F: %f B: %f\r\n", chnl, currentTempFront, currentTempBack);
//main loop for channels
if(chnlStatus[chnl].error == 0){
if(currentTemp > ((chnlStatus[chnl].setTemp)+HYST_HIGH)){
- if(DEBUG3) pc.printf("DBG: [%d] Chiller ON \r\n", chnl);
+ if(DEBUG) pc.printf("DBG: [%d] Chiller ON \r\n", chnl);
//reset heater on time
chnlStatus[chnl].heater_init_time = 0;
- //reset cooling timer
- float time_sec = 0;
- //check if the temp. diff. is small and can't wait for an entire period (~4.18) to turn valve off
- if(abs(currentTemp - (chnlStatus[chnl].setTemp)) < 5){
- //start timer
- t_cool.start();
- //turn chiller on
- turn_valve_on(chnl);
- //read timer
- time_sec = t_cool.read();
- while((currentTemp > ((chnlStatus[chnl].setTemp)+HYST_HIGH)) && (time_sec < MAX_CHILL_TIME)){
- currentTemp = get_temp(chnl, BACK_THERM);
- time_sec = t_cool.read();
- if(DEBUG5) pc.printf("DBG: [%d] TIME: %f \r\n", chnl, time_sec);
- }
- time_sec = 0;
- t_cool.stop();
- t_cool.reset();
- turn_valve_off(chnl);
- }
- else{
- //Turn chiller on
- turn_valve_on(chnl);
- }
+ //Turn chiller on
+ turn_valve_on(chnl);
}
else if (currentTemp < ((chnlStatus[chnl].setTemp)-HYST_LOW)){
- if(DEBUG3) pc.printf("DBG: [%d] Heater ON \r\n", chnl);
+ if(DEBUG) pc.printf("DBG: [%d] Heater ON \r\n", chnl);
//establish starting time for heater
if(chnlStatus[chnl].heater_init_time == 0){ //check if it is the first time that heater has turned on
//make sure time isn't zero, otherwise keeping looping until we are not at 0
@@ -827,12 +878,12 @@
chnlStatus[chnl].heater_init_time = time_min;
}
}
- if(DEBUG5) pc.printf("DBG: TIME ON: %d %d %f %d %d\r\n", chnlStatus[chnl].heater_init_time, time_min, time_sec, init_heat_time, (chnlStatus[chnl].heater_init_time == NULL));
+ if(DEBUG2) pc.printf("DBG: TIME ON: %d %d %f %d %d\r\n", chnlStatus[chnl].heater_init_time, time_min, time_sec, init_heat_time, (chnlStatus[chnl].heater_init_time == NULL));
//Turn heater on
turn_heater_on(chnl);
}
else{
- if(DEBUG3) pc.printf("DBG: [%d] All OFF \r\n", chnl);
+ if(DEBUG) pc.printf("DBG: [%d] All OFF \r\n", chnl);
//reset heater on time
chnlStatus[chnl].heater_init_time = 0;
//turn off chiller
@@ -852,7 +903,7 @@
turn_heater_off(chnl);
//turn on green LED status light
status_led(chnl, 1);
- }
+ }
else{
status_led(chnl, STATUS_BAD);
}