Subversion Repositories ftdi_wb_bridge

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include <unistd.h>

#include "ftdi_hw.h"

//-----------------------------------------------------------------

// Defines:

//-----------------------------------------------------------------

#define DEFAULT_FTDI_IFACE  1

//-----------------------------------------------------------------

// main:

//-----------------------------------------------------------------

int main(int argc, char *argv[])

{

    int err = 0;

    int c;

    int help = 0;

    int ftdi_iface = DEFAULT_FTDI_IFACE;

    uint8_t value = 0;

    int quiet = 0;

    while ((c = getopt (argc, argv, "i:q")) != -1)

    {

        switch(c)

        {

            case 'i':

                 ftdi_iface = (int)strtol(optarg, NULL, 0);

                 break;

            case 'q':

                quiet = 1;

                break;

            default:

                help = 1;

                break;

        }

    }

    if (help)

    {

        fprintf (stderr,"Usage:\n");

        fprintf (stderr,"-v 0xNN           = Data to write\n");

        fprintf (stderr,"-i id             = FTDI interface ID (0 = A, 1 = B)\n");

        fprintf (stderr,"-q                = Quiet mode (data returned via return value)\n");

        exit(-1);

    }

    // Try and communicate with FTDI interface

    if (ftdi_hw_init(ftdi_iface) != 0)

    {

        fprintf(stderr, "ERROR: Could not open FTDI interface, try SUDOing / check connection\n");

        exit(-2);

    }

    if (ftdi_hw_gpio_read(&value) != 0)

    {

        fprintf(stderr, "ERROR: Could not read from device\n");

        err = 1;

    }

    if (!quiet)

    {

        printf("Read 0x%x from GPIO\n", value);

        value = 0;

    }

    ftdi_hw_close();

    return err ? -1 : value;

}