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