File content as of revision 0:c168443703fb:

#include "mbed.h"
Serial pc(USBTX, USBRX);
AnalogIn tempPin1(p15);
AnalogIn tempPin2(p16);
AnalogIn tempPin3(p17);
AnalogIn tempPin4(p18);
PwmOut pwm1(p21);
PwmOut pwm2(p22);
#define start 500
#define end 2000
float tempTotal1;
float tempTotal2;
float tempTotal3;
float tempTotal4;
uint32_t tempDiv1;
uint32_t tempDiv2;
uint32_t tempDiv3;
uint32_t tempDiv4;
#define MAX_TEMP_AVG 10
void sampleTemp();
void sampleTemps();
void resetTempSamples();
float getAvgTemp();

void sampleTemp()
{
        tempTotal1 += tempPin1; 
        tempDiv1++;
        tempTotal2 += tempPin2; 
        tempDiv2++;
        tempTotal3 += tempPin3; 
        tempDiv3++;
        tempTotal4 += tempPin4; 
        tempDiv4++;       
}
void sampleTemps()
{
    for(int i=0;i<MAX_TEMP_AVG;i++) {
        sampleTemp();
        wait(0.1);
    }
}
void resetTempSamples()
{
    tempTotal1 = 0.0;
    tempDiv1 = 0;
    tempTotal2 = 0.0;
    tempDiv2 = 0;
    tempTotal3 = 0.0;
    tempDiv3 = 0;
    tempTotal4 = 0.0;
    tempDiv4 = 0;
}

float getAvgTemp1()
{
    resetTempSamples();
    sampleTemps();
    float tempAvg1 = (((tempTotal1)*3300/(float)tempDiv1)-400.0)/19.5;
    return tempAvg1;
}
float getAvgTemp2()
{
    resetTempSamples();
    sampleTemps();
    float tempAvg2 = (((tempTotal2)*3300/(float)tempDiv2)-400.0)/19.5;
    return tempAvg2;
}
float getAvgTemp3()
{
    resetTempSamples();
    sampleTemps();
    float tempAvg3 = (((tempTotal3)*3300/(float)tempDiv3)-400.0)/19.5;
    return tempAvg3;
}
float getAvgTemp4()
{
    resetTempSamples();
    sampleTemps();
    float tempAvg4 = (((tempTotal4)*3300/(float)tempDiv4)-400.0)/19.5;
    return tempAvg4;
}
int main() {
    
    tempDiv1 = 0;
    tempDiv2 = 0; 
    tempDiv3 = 0;
    tempDiv4 = 0;
    int a,b;   
    pc.printf("MBED ready..\r\n");
    sampleTemps();
    while(1){     
        sampleTemp();                        
        float k=getAvgTemp1()-getAvgTemp2();
        float i=getAvgTemp3()-getAvgTemp4();
        pc.printf("Temp1:%f\nTemp2:%f\n",getAvgTemp1(),getAvgTemp2());
        pc.printf("Temp3:%f\nTemp4:%f\n",getAvgTemp3(),getAvgTemp4());
            a = k * 2;
            b = i * 2;
        {
        for(int p = start; p < end; p += a) 
        pwm1.pulsewidth_us(p);
        wait_ms(10);
        }
        {
        for(int q = start; q < end; q += b)
        pwm2.pulsewidth_us(q);
        wait_ms(10);
        }
}
}