hi
i have a problem with my PIC18f4550
the simulator result is as required
but the hardware isn't
[CODE]
    unsigned char a,b;
    float r ;
    float temp;
    float P_R[3] = {-17,7,10};    /*read from RF module*/

    ADCON1 = 0xFF;   
    TRISD = 0x00;
    TRISB = 0x00;                               

            temp = (1.4+P_R[0])/30;
            r = pow( 10,temp );
            r = 1/r;                               
           
            a = (unsigned char) r;
            b = (unsigned char)((r-a)*10);
           
            PORTB = b;
            PORTD = 3;   
[/CODE]

the value sent to PORTB never appears but when i assign direct value to
PORTx it works as PORTD also if i assign that value to the variable then
send it to PORTx
[code]
         a = 3;
         PORTB = a;
[/code]
but i need to get the calculated value from equation????


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