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/* ftdi_out.c
*
* Output a (stream of) byte(s) in bitbang mode to the
* ftdi245 chip that is (hopefully) attached.
*
* We have a little board that has a FT245BM chip and
* the 8 outputs are connected to several different
* things that we can turn on and off with this program.
*
* If you have an idea about hardware that can easily
* interface onto an FTDI chip, I'd like to collect
* ideas. If I find it worthwhile to make, I'll consider
* making it, I'll even send you a prototype (against
* cost-of-material) if you want.
*
* At "harddisk-recovery.nl" they have a little board that
* controls the power to two harddrives and two fans.
*
* -- REW R.E.Wolff@BitWizard.nl
*
*
*
* This program was based on libftdi_example_bitbang2232.c
* which doesn't carry an author or attribution header.
*
*
* This program is distributed under the GPL, version 2.
* Millions copies of the GPL float around the internet.
*/
#include <stdio.h>
#include <unistd.h>
#ifdef __WIN32__
#define usleep(x) Sleep((x+999)/1000)
#endif
#include <ftdi.h>
void ftdi_fatal (struct ftdi_context *ftdi, char *str)
{
fprintf (stderr, "%s: %s\n",
str, ftdi_get_error_string (ftdi));
exit (1);
}
int main(int argc, char **argv)
{
struct ftdi_context ftdic;
int i, t;
unsigned char data;
int delay = 100000; /* 100 thousand microseconds: 1 tenth of a second */
while ((t = getopt (argc, argv, "d:")) != -1)
{
switch (t)
{
case 'd':
delay = atoi (optarg);
break;
}
}
if (ftdi_init(&ftdic) < 0)
{
fprintf(stderr, "ftdi_init failed\n");
return EXIT_FAILURE;
}
if (ftdi_usb_open(&ftdic, 0x0403, 0x6001) < 0)
ftdi_fatal (&ftdic, "Can't open ftdi device");
if (ftdi_set_bitmode(&ftdic, 0xFF, BITMODE_BITBANG) < 0)
ftdi_fatal (&ftdic, "Can't enable bitbang");
for (i=optind; i < argc ; i++)
{
sscanf (argv[i], "%x", &t);
data = t;
if (ftdi_write_data(&ftdic, &data, 1) < 0)
{
fprintf(stderr,"write failed for 0x%x: %s\n",
data, ftdi_get_error_string(&ftdic));
}
usleep(delay);
}
ftdi_usb_close(&ftdic);
ftdi_deinit(&ftdic);
exit (0);
}
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