File content as of revision 7:90753ca349c8:

 #include "mbed.h"

Serial ble(PC_12, PD_2);
I2C bme(PC_1,PC_0);

int main()
{
    ble.baud(9600);
    int BMEaddr=0xEC; //8bit slave BMEaddress

    char wHum[2];
    wHum[0]=0x72; //humidity register
    wHum[1]=0x1;//
    char rHum[1];

    bme.write(BMEaddr,wHum,2);
    bme.read(BMEaddr,rHum,1);
    //ble.printf("Hum: %x\n",rHum[0]);
    wait(0.1);
        
    char wPres[2]; 
    wPres[0]=0x74;//measurement register
    wPres[1]=0x54; //01010100 (kept the temperature)
    char rPres[1];
    
    bme.write(BMEaddr,wPres,2);
    bme.read(BMEaddr,rPres,1);
    //ble.printf("Temp and pres: %x\n",rPres[0]);
    wait(0.1);
    
    char wWait[2]; 
    wWait[0]=0x64;//gas wait 0 register
    wWait[1]=0x59; //100 ms
    char rWait[1];
    
    bme.write(BMEaddr,wWait,2);
    bme.read(BMEaddr,rWait,1);
    //ble.printf("Wait: %x\n",rWait[0]);
    wait(0.1);
    
    //GET HEAT SETTING PARAMETERS
    char wg1[1];
    wg1[0]=0xED;
    char rg1[1];
    char wg2M[1];
    char wg2L[1];
    char rg2M[1];
    char rg2L[1];
    wg2M[0]=0xEC;
    wg2L[0]=0xEB;
    char wg3[1];
    wg3[0]=0xEE;
    char rg3[1];
    char wHR[1];
    wHR[0]=0x02;
    char rHR[1];
    char wHV[1];
    wHV[0]=0x00;
    char rHV[1];
    
    bme.write(BMEaddr,wg1,1);
    bme.read(BMEaddr,rg1,1);//get g1
    int g1=rg1[0];
    //ble.printf("G1 hex: %x, G1 int: %d\n",rg1[0], g1);
    wait(0.1);
    
    bme.write(BMEaddr,wg2M,1);
    bme.read(BMEaddr,rg2M,1);//get g2m
    
    bme.write(BMEaddr,wg2L,1);
    bme.read(BMEaddr,rg2L,1);//get g2l
    //ble.printf("G2M hex: %x, G2L hex: %x\n",rg2M[0], rg2L[0]);
    int g2=((rg2M[0]<<8)+rg2L[0]);
    //ble.printf("G2 hex: %x, G2 int: %d\n",g2, g2);
    wait(0.1);
    
    bme.write(BMEaddr,wg3,1);
    bme.read(BMEaddr,rg3,1);//get g3
    int g3=rg3[0];
    //ble.printf("G3 hex: %x, G3 int: %d\n",rg3[0],g3);
    wait(0.1);
    
    bme.write(BMEaddr,wHR,1);
    bme.read(BMEaddr,rHR,1);//get heating range
    int HR=((rHR[0]<<2)>>6);
    //ble.printf("HR hex: %x, HR int: %d\n",rHR[0], HR);
    wait(0.1);
    
    bme.write(BMEaddr,wHV,1);
    bme.read(BMEaddr,rHV,1);//get g3
    int HV=rHV[0];
    //ble.printf("HV hex: %x, HV int: %d\n",rHV[0], HV);
    wait(0.1);
    
    double var1=(g1/16.0)+49.0;
    double var2= ((g2 / 32768.0) * 0.0005) + 0.00235;
    double var3=g3 / 1024.0;
    double var4 = var1 * (1.0 + (var2 *3000)); //target temp 300c
    double var5= var4 + (var3 * 24.0);//ambient 24c
    uint8_t heat=(3.4 * ((var5 * (4.0 / (4.0 + HR)) * (1.0/(1.0 +(HV * 0.002)))) - 25));
    //ble.printf("Re heat: %d\n",heat);
    wait(0.1);
    
    //END OF HEAT SETTING PARAMETERS
    
    char wRes[2]; 
    wRes[0]=0x5A;//gas wait 0 heat setting
    wRes[1]=0x59; //???
    char rRes[1];
    
    bme.write(BMEaddr,wRes,2);
    bme.read(BMEaddr,rRes,1);
    //ble.printf("Heater resistance: %x\n",rRes[0]);
    wait(0.1);
    
    char wCG[2];  
    wCG[0]=0x71;//control gas register
    wCG[1]=0x0; 
    char rCG[1];
    
    bme.write(BMEaddr,wCG,2);
    bme.read(BMEaddr,rCG,1);
    //ble.printf("Control gas: %x\n",rCG[0]);
    wait(0.1);
    
    char wRG[2];  
    wRG[0]=0x71;//control gas register
    wRG[1]=0x10; 
    char rRG[1];
    
    bme.write(BMEaddr,wRG,2);
    bme.read(BMEaddr,rRG,1);
    //ble.printf("Run gas: %x\n",rRG[0]);
    wait(0.1);
    
    



    wPres[1]=0x55; //01010101 (kept the temperature and prssure, enabled measurement 
    
    ///GET GAS
    char wGasL[1];
    wGasL[0]=0x2B;
    char wGasM[1];
    wGasM[0]=0x2A;
    char rGasL[1];
    char rGasM[1];
    
    //GET TEMP
    char wTempL[1];
    char wTempM[1];
    wTempL[0]=0x23;
    wTempM[0]=0x22; 
    char rTempL[1];
    char rTempM[1];
    
    while(1) {
        bme.write(BMEaddr,wPres,2); //enables measurement
        bme.read(BMEaddr,rPres,1);
        
        bme.write(BMEaddr,wGasL,1);
        bme.read(BMEaddr,rGasL,1); //bits 7:6 are significant
        bme.write(BMEaddr,wGasM,1);
        bme.read(BMEaddr,rGasM,1); //whole byte is significant
        
        bme.write(BMEaddr,wTempL,1);
        bme.read(BMEaddr,rTempL,1);
        bme.write(BMEaddr,wTempM,1);
        bme.read(BMEaddr,rTempM,1);
        
        int temp =(rTempM[0]<<8)+rTempL[0];
        int gas =(rGasM[0]<<2)+(rGasL[0]>>6); //make space on the most of 2 bits to add only the first two bits from the least
        
        ble.printf("Gas: %i, Temp L: %x, Temp H: %x\n",gas, rTempL[0],rTempM[0]);
        wait(0.1);
    }

}