File content as of revision 11:d812de0e5136:

int readX()
{
    int delta=0,xv1=0,xv2=0,k=0;
    int temp1=0,temp2=0;

    AnalogIn yp(PTB3);
    AnalogIn ym(PTB2);
    DigitalOut xp(PTB0);
    DigitalOut xm(PTB1);

    xp=1; // set positive sdie of x high
    xm=0;
    // dont need to do anyhting to set low side as it should be fine.
    // but do need to disconnect yp
    //yp.PinMode(PullNone)
    delta = 0;
    for(k=0; k<10; k++) { // make 10 readings to average
        temp1= (int)ym.read_u16();
        temp2 = (int)yp.read_u16();
        xv1+=temp1;  // get value
        xv2+=temp2; // get other value
        delta+= abs(temp1-temp2)/10; //gets individual differences
       // pc.printf("val1 = %d - val2 = %d-diff = %d\n\r",temp1,temp2,temp1-temp2);
        //observing behaviour when touching / nt touching
        
    }
    //delta=abs(xv2-xv1)/10;
    if(delta<300) touching=1;
    else touching=0;
    pc.printf("delta=%d \t %d\n\r",delta,touching);
    xp=0;
    xm=0;
    return (240 - (240 * ((xv1 + xv2) / 2 / 10 - 5800)) / 51200); //returns the average of both
    //return(xv2/10); //maybe better to return the average of both....
}
// subroutine to read y values - has different pin functions ..
int readY()
{
    DigitalOut yp(PTB3);
    DigitalOut ym(PTB2);
    AnalogIn xp(PTB0);
    AnalogIn xm(PTB1);
    int delta=0,yv1=0,yv2=0,k=0;
    int temp1=0,temp2=0;
    yp=1; // set positive sdie of x high
    ym=0;
    // dont need to do anyhting to set low side as it should be fine.
    // but do need to disconnect yp
    //yp.PinMode(PullNone)
    delta = 0;
    for(k=0; k<10; k++) { // make 10 readings to average
        temp1= (int)xm.read_u16();
        temp2 = (int)xp.read_u16();
        yv1+=temp1;  // get value
        yv2+=temp2; // get other value
        delta+= abs(temp1-temp2)/10;
        //pc.printf("val1 = %d - val2 = %d-diff = %d\n\r",temp1,temp2,temp1-temp2);
    }
    //int yval=(int)xm.read_u16();  // get value
    //pc.printf("yval=%d",yval);
    yp=0;
    ym=0;
    return (320 - (320 * ((yv1 + yv2)/ 20 - 3000)) / 58300);   // returns Y
//    return(yval);

}



void poll(){
    int xp,yp = 0;
    xp=readX();
    yp=readY();
}