Hochschule München
/
PowerDriverforH2m
Mosfet Driver
main.cpp
- Committer:
- HMFK03LST1
- Date:
- 2013-05-02
- Revision:
- 0:4f562ff70d13
- Child:
- 1:19d350e383e6
File content as of revision 0:4f562ff70d13:
#include "mbed.h" LocalFileSystem local("local"); //Flashdrive for config file FILE *fp; //Local Config File #define USR_POWERDOWN (0x104) //Power Down Mbed Interface (save 50% or 45 mA) DigitalOut myled (LED1); DigitalOut myled1 (LED2); DigitalOut myled2 (LED3); DigitalOut pumpe (LED4); DigitalOut purge (p33); DigitalOut pump (p34); DigitalOut mosfet1(p35); DigitalOut mosfet2(p36); DigitalIn In1 (p30); DigitalIn In2 (p29); DigitalIn In3 (p28); DigitalIn In4 (p27); AnalogIn AI1 (p17); AnalogIn AI2 (p18); AnalogIn bz_in (p19); AnalogIn cap_in (p20); Serial pc(USBTX, USBRX); Ticker pc_out; Timer t; float bz_off = 16.0; //Brennstoffzellen Spannung min. Laden beenden float bz_on = 17.0; //Brennstoffzellen Spannung für Ladefreigabe) float bz_max = 18.0; //Brennstoffzellen Spannung Abs. max. float cap_max = 13.0; //CAP Spannung max. (Abschaltung) float cap_min = 9.0; //CAP Spannung min. (Zelle an) int pwm_cycle = 60; //ms für PWM Period int pwm_lo = 40; //ms für PWM high float purge_start= 60.0; //s before starting purch float purge_end = 60.2; //s after finishing purch float boost_time = 0.2; //s Pump runup with 100% Duty Cycle int boost = 25; //Number of PWM-Cycles for Pump runup boost int debug = 1; //Serial Output on (1) float gate_on = 3.5; //Mosfet opt. Gate Drain [V] float gate_off = 2.8; //Mosfet min. Gate Drain [V] float sample = 5; //Serial Output Samples per Second float bz; float cap; int counter; void send() { if (debug == 1) pc.printf("BZ: %4.1f/%4.1f-%4.1f+%4.1f CAP: %4.1f/%4.1f-%4.1f Purge %4.1f/%4.1f-%4.1f\n\r",bz,bz_off,bz_on,bz_max,cap,cap_min,cap_max,float(counter)/(1000/pwm_cycle),purge_start,purge_end); } void load_cfg() { char read[16][16]; char i = 0; char j = 0; int c = 0; float temp; for (j = 0; j<16; j++) { for (i = 0; i<16; i++) { read[j][i] = '\0'; } } i=0; j=0; fp = fopen("/local/power.cfg", "r"); if ( fp != NULL ) { while((c != EOF) && (c !=10)) { c = fgetc(fp); if (c == ';'){read[j][0] = i; i = 0; j++;} else {i++; read[j][i] = c;} } fclose(fp); sscanf(&read[ 0][1], "%f", &temp); bz_on = temp; sscanf(&read[ 1][1], "%f", &temp); bz_off = temp; sscanf(&read[ 2][1], "%f", &temp); bz_max = temp; sscanf(&read[ 3][1], "%f", &temp); cap_min = temp; sscanf(&read[ 4][1], "%f", &temp); cap_max = temp; sscanf(&read[ 5][1], "%f", &temp); gate_on = temp; sscanf(&read[ 6][1], "%f", &temp); gate_off = temp; sscanf(&read[ 7][1], "%f", &temp); purge_start = temp; sscanf(&read[ 8][1], "%f", &temp); purge_end = temp; sscanf(&read[ 9][1], "%f", &temp); boost_time = temp; sscanf(&read[10][1], "%f", &temp); pwm_cycle = temp; sscanf(&read[11][1], "%f", &temp); pwm_lo = temp; sscanf(&read[12][1], "%f", &temp); debug = temp; sscanf(&read[13][1], "%f", &temp); sample = temp; boost = (boost_time * 1000) / pwm_cycle; } pc.printf("\n\r"); pc.printf("Brennstoffzellenregler V0.5 \n\r"); pc.printf("___________________________ \n\r" ); pc.printf("BZ max [V] : %4.1f \n\r",bz_max); pc.printf("BZ on [V] : %4.1f \n\r",bz_on); pc.printf("BZ off [V] : %4.1f \n\r",bz_off); pc.printf("CAP min [V] : %4.1f \n\r",cap_min); pc.printf("CAP max [V] : %4.1f \n\r",cap_max); pc.printf("Gate On [V] : %4.1f \n\r",gate_on); pc.printf("Gate Off [V] : %4.1f \n\r",gate_off); pc.printf("Purch on [s] : %4.1f \n\r",purge_start); pc.printf("Purch off [s] : %4.1f \n\r",purge_end); pc.printf("Boost [s] : %4.1f \n\r",boost_time); pc.printf("PWM cycle [ms]: %4d \n\r" ,pwm_cycle); pc.printf("PWM lo [ms]: %4d \n\r" ,pwm_lo); pc.printf("Serial : %4d \n\r" ,debug); pc.printf("Sample [Hz]: %4.0f \n\r",sample); pc.printf("___________________________ \n\r" ); pc.printf("\n\r"); } int semihost_powerdown() { uint32_t arg; return __semihost(USR_POWERDOWN, &arg); } int main() { pc.baud(115200); //config Serial Port load_cfg(); //init config File semihost_powerdown(); //Mbed Interface powerdown pc_out.attach(&send, (1/sample)); //Serial output mit Timer t.start(); //Timer für PWM starten while(1) { bz = bz_in * 46.0; //BZ RAW in Spannung umrechnen cap = cap_in * 46.0; //CAP RAW in Spannung umrechnen if (bz < bz_off ) {myled = 1;} else {myled = 0;}; //LED = Spannung an der BZ IO if (cap > cap_min) {myled1 = 1;} else {myled1 = 0;}; //LED = Spannung an den Cap´s IO if ((cap <= cap_min) || (pumpe == 1) ) //Pumpe Einschaltbedingung { if ((cap < cap_max) && (bz < bz_max)) { pumpe = 1; //LED Pumpe if (t.read_ms() > pwm_lo) pump = 1 ; //Set PWM from low to high } else pumpe = 0; //Pumpe Ausschaltbedingung if (t.read_ms() > pwm_cycle) //End PWM cycle { t.reset(); if ((counter > (1000 / pwm_cycle) * purge_start) || (boost > 0) || (In1 > 1)) //PWM oder Purch Betrieb { if (pump == 1) purge = 1; } else { pump = 0; purge = 0; } boost--; counter++; } if (counter > (1000 / pwm_cycle) * purge_end) {counter = 0; purge = 0; pump = 0;} //Purch Ende } else { pumpe = 0; pump = 0; purge = 0; boost = (boost_time * 1000) / pwm_cycle; //LED & Pumpe aus Boost für nächsten Start setzen } if (((bz-cap) >= gate_on) && (bz > bz_on) && (In2 == 0)) //Überspannung (> gate_on) oder Ladespannung der BZ in die Caps laden { mosfet1 = 0; myled2 = 1; //Zelle einkoppeln / Mosfet LED an *** } if ((bz < bz_off) || ((bz-cap) < gate_off)) //Ladereglung Unterspannung Zelle / Gate-Mosfet { mosfet1 = 1; myled2 = 0; //Zelle trennen / Mosfet LED aus } wait_us(5); } }