bio.c

#include <stdio.h>
#include "pico/stdlib.h"
#include "pirate.h"

#define BUFDIR_INPUT 0
#define BUFDIR_OUTPUT 1

void bio_init(void)
{
    // setup the buffer IO and DIRection pins
    for(uint8_t i=0;i<BIO_MAX_PINS; i++)
    {
        #ifdef BP_DEBUG_ENABLED
        if(i==BP_DEBUG_UART_TX || i==BP_DEBUG_UART_RX) continue;
        #endif

        gpio_set_drive_strength(bio2bufiopin[i], GPIO_DRIVE_STRENGTH_2MA); 
        gpio_set_dir(bio2bufiopin[i], GPIO_IN); 
        gpio_set_function(bio2bufiopin[i], GPIO_FUNC_SIO);     
    }


    // init buffer direction (0 = input)
    for(uint8_t i=0;i<BIO_MAX_PINS; i++)
    {    
        //don't blow up our debug UART settings
        #ifdef BP_DEBUG_ENABLED
        if(i==BP_DEBUG_UART_TX || i==BP_DEBUG_UART_RX) continue;
        #endif

        gpio_put(bio2bufdirpin[i], BUFDIR_INPUT);
        gpio_set_dir(bio2bufdirpin[i], GPIO_OUT);   
        gpio_set_function(bio2bufdirpin[i], GPIO_FUNC_SIO);
    }
}
void bio_buf_pin_init(uint8_t bio)
{
    gpio_put(bio2bufdirpin[bio], BUFDIR_INPUT);
    gpio_set_dir(bio2bufdirpin[bio], GPIO_OUT);   
    gpio_set_function(bio2bufdirpin[bio], GPIO_FUNC_SIO);
}
//these are only for use with the BIO0...BIOn ordered pin format, 
void bio_buf_output(uint8_t bio)
{
    gpio_put(bio2bufdirpin[bio], BUFDIR_OUTPUT); //make the buffer an output   
}
//these are only for use with the BIO0...BIOn ordered pin format, 
void bio_buf_input(uint8_t bio)
{
    gpio_put(bio2bufdirpin[bio], BUFDIR_INPUT); //make the buffer an input
}
//these are only for use with the BIO0...BIOn ordered pin format, 
void bio_output(uint8_t bio)
{
    //first set the buffer to output
    gpio_put(bio2bufdirpin[bio], BUFDIR_OUTPUT);  
    //now set pin to output
    gpio_set_dir(bio2bufiopin[bio], GPIO_OUT);  
}
//these are only for use with the BIO0...BIOn ordered pin format, 
void bio_input(uint8_t bio)
{
    //first set the pin to input
    gpio_set_dir(bio2bufiopin[bio], GPIO_IN);
    //now set buffer to input
    gpio_put(bio2bufdirpin[bio], BUFDIR_INPUT);
}
void bio_put(uint8_t bio, bool value)
{
    gpio_put(bio2bufiopin[bio], value);
}
bool bio_get(uint8_t bio)
{
    return gpio_get(bio2bufiopin[bio]);
}
void bio_set_function(uint8_t bio, uint8_t function)
{
    gpio_set_function(bio2bufiopin[bio], function);
}
void bio_buf_test(uint8_t bufio, uint8_t bufdir)
{
    gpio_put(bufdir, BUFDIR_OUTPUT);   
    gpio_set_dir(bufio, GPIO_OUT);
    gpio_put(bufio, 1);
    busy_wait_ms(2000);
    gpio_put(bufio, 0);   
    gpio_set_dir(bufio, GPIO_IN);
    gpio_put(bufdir, BUFDIR_INPUT);
}