Heater files
Dependents: LEX-Demo-Firmware-Logging LEX-Demo-Firmware-Logging
Diff: Heater.cpp
- Revision:
- 11:785a0329f802
- Parent:
- 10:0e16d8430d66
- Child:
- 12:8a048f111140
- Child:
- 13:8629d78fd93b
--- a/Heater.cpp Mon Jul 22 10:46:26 2019 +0000 +++ b/Heater.cpp Tue Jul 23 08:04:51 2019 +0000 @@ -14,6 +14,8 @@ extern Timer timer; extern DigitalIn adc_busy; extern MODSERIAL pc; +extern int log_count; +extern float R_avg; @@ -23,12 +25,16 @@ float Heater::R_to_T(float R) {return R*corr_grad + corr_int;} float Heater::T_to_R(float T) {return (T - corr_int)/corr_grad;} +void Heater::output() +{ + pc.printf("%d,%f,%f\n",timer.read_ms(),R_to_T(R),R); +} void Heater::read() { //Reads R and then resets the drive back to its previous value - timer.reset(); int i = 0; + int drive_prev = drive; //Store previous value of drive drive = 1; wait_us(MEAS_DELAY); //Wait for ADC to settle @@ -50,6 +56,12 @@ if (v<0) {pc.printf("v is %d",v);} //if (curr > 0) {R = (float)v/curr;} //Avoid dividing by 0 R = (float)v/curr; + log_count++; + if (log_count > 0) + { + log_count = 0; + output(); + } } @@ -64,14 +76,16 @@ while (timer.read_ms() < end_time) { read(); - if (R > R_ref) + R_avg = (((N_ROLL_AVG - 1) * R_avg) + R)/N_ROLL_AVG; + if (R_avg > R_ref) { drive = 0; - wait_ms(10); //Minimum duty cycle of 10% + wait_ms(5); //Minimum duty cycle of 10% } else { drive = 1; + wait_ms(5); } }