pio.c

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#include "pio.h"

int pioGetHandle(int port)
{
        switch (port) {
                case 0:
                        return AVR32_PIOA_ADDRESS;
                case 1:
                        return AVR32_PIOB_ADDRESS;
                case 2:
                        return AVR32_PIOC_ADDRESS;
                case 3:
                        return AVR32_PIOD_ADDRESS;
                case 4:
                        return AVR32_PIOE_ADDRESS;
                default :
                        break;
        }
        return PIO_INVALID_ARGUMENT;
}

int pio_enable_module(avr32_piomap_t piomap, int size)
{
        int i,status=PIO_SUCCESS;

        for(i=0; i<size; i++){
                        status |= pio_enable_module_pin(**piomap, *(*piomap+1) );
                        piomap++;
        }

        return status;
}

int pio_enable_module_pin(int pin, int function)
{
        avr32_pio_t *pio = (void *) pioGetHandle(pin/32);


        /* Disable pio control */
        pio->pdr |= (1<<(pin%32));

        /* Enable the correct function */
        switch(function){
                case 0:
                        pio->asr |= (1<<(pin%32));
                        break;
                case 1:
                        pio->bsr |= (1<<(pin%32));
                        break;
                default:
                        return PIO_INVALID_ARGUMENT;
        }
        return PIO_SUCCESS;
}



int pio_enable_pio(avr32_piomap_t piomap, int size)
{
        int i,status=PIO_SUCCESS;

        for(i=0; i<size; i++){
                        status |= pio_enable_pio_pin(**piomap);
                        piomap++;
        }

        return status;
}

int pio_enable_pio_pin(int pin)
{
        avr32_pio_t *pio = (void *) pioGetHandle(pin/32);

        pio->per |= (1<<(pin%32));

        return PIO_SUCCESS;
}



int pio_disable_module(avr32_piomap_t piomap, int size)
{
        int i,status=PIO_SUCCESS;

        for(i=0; i<size; i++){
                        status |= pio_disable_pio_pin(**piomap);
                        piomap++;
        }

        return status;
}

int pio_disable_pio_pin(int pin)
{
        avr32_pio_t *pio = (void *) pioGetHandle(pin/32);

        pio->pdr |= (1<<(pin%32));

        return PIO_SUCCESS;
}

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