Bit to Byte?

This is a discussion on Bit to Byte? within the C Programming forums, part of the General Programming Boards category; I've written the following program in bit instructions. How would I do the same program but using byte instructions? Thanks ...

  1. #1
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    Bit to Byte?

    I've written the following program in bit instructions. How would I do the same program but using byte instructions?

    Thanks for any help and time given.

    /*
    A program that transfers the state of the lower
    5 DIL switches(RC0 - RC4) to the LED's (RA0 - RA4).(Byte Intructions)
    */

    #include <p18f2221.h>
    #pragma config OSC=HS /* 0.4us cycle time with 10MHz osc */
    #pragma config WDT=OFF
    #define Switch1 PORTCbits.RC0
    #define LED1 PORTAbits.RA0
    #define Switch2 PORTCbits.RC1
    #define LED2 PORTAbits.RA1
    #define Switch3 PORTCbits.RC2
    #define LED3 PORTAbits.RA2
    #define Switch4 PORTCbits.RC3
    #define LED4 PORTAbits.RA3
    #define Switch5 PORTCbits.RC4
    #define LED5 PORTAbits.RA4

    void main(void){
    ADCON1=0x0f; /* digital IO */
    TRISA=0xe0; /* 5 LEDs as outputs */
    TRISC=0xff; /* PORTC as inputs */
    PORTA=0x00; /* all LEDs off */

    while(1){ /* forever */
    if(Switch1) /* is switch open (non zero)*/
    LED1=1;
    else
    LED1=0; /* turn LED on */

    while(1){ /*Second Switch */
    if(Switch2)
    LED2=1;
    else
    LED2=0;

    while(1){ /*Third Switch */
    if(Switch3)
    LED3=1;
    else
    LED3=0;

    while(1){ /*Fourth Switch */
    if(Switch4)
    LED4=1;
    else
    LED4=0;

    while(1){ /*Fifth Switch */
    if(Switch5)
    LED5=1;
    else
    LED5=0;
    }
    }

  2. #2
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  3. #3
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    The following link seems to have a good basic introduction to the Boolean operators.
    bit twiddling

    But as Tater pointed out please use code tags when posting code.

    Jim

  4. #4
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    Similar to the hex constants used for PORTA:
    Code:
    PORTC = 0x01;
    PORTA = 0x00;
    
    if (PORTC) /* PORTCbits.RC0 == 1*/ 
        PORTA=0x01;
    else 
        PORTA=!PORTA;

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