Commit | Line | Data |
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ad397a4b TJ |
1 | /* ftdi_out.c |
2 | * | |
3 | * Output a (stream of) byte(s) in bitbang mode to the | |
4 | * ftdi245 chip that is (hopefully) attached. | |
5 | * | |
6 | * We have a little board that has a FT245BM chip and | |
7 | * the 8 outputs are connected to several different | |
8 | * things that we can turn on and off with this program. | |
9 | * | |
10 | * If you have an idea about hardware that can easily | |
11 | * interface onto an FTDI chip, I'd like to collect | |
12 | * ideas. If I find it worthwhile to make, I'll consider | |
13 | * making it, I'll even send you a prototype (against | |
14 | * cost-of-material) if you want. | |
15 | * | |
16 | * At "harddisk-recovery.nl" they have a little board that | |
17 | * controls the power to two harddrives and two fans. | |
18 | * | |
19 | * -- REW R.E.Wolff@BitWizard.nl | |
20 | * | |
21 | * | |
22 | * | |
23 | * This program was based on libftdi_example_bitbang2232.c | |
24 | * which doesn't carry an author or attribution header. | |
25 | * | |
26 | * | |
27 | * This program is distributed under the GPL, version 2. | |
28 | * Millions copies of the GPL float around the internet. | |
29 | */ | |
30 | ||
31 | ||
32 | #include <stdio.h> | |
33 | #include <unistd.h> | |
34 | #include <ftdi.h> | |
35 | ||
36 | void ftdi_fatal (struct ftdi_context *ftdi, char *str) | |
37 | { | |
38 | fprintf (stderr, "%s: %s\n", | |
39 | str, ftdi_get_error_string (ftdi)); | |
40 | exit (1); | |
41 | } | |
42 | ||
43 | int main(int argc, char **argv) | |
44 | { | |
45 | struct ftdi_context ftdic; | |
46 | int i, t; | |
47 | unsigned char data; | |
48 | int delay = 100000; /* 100 thousand microseconds: 1 tenth of a second */ | |
49 | ||
50 | while ((t = getopt (argc, argv, "d:")) != -1) { | |
51 | switch (t) { | |
52 | case 'd': | |
53 | delay = atoi (optarg); | |
54 | break; | |
55 | } | |
56 | } | |
57 | ||
58 | ftdi_init(&ftdic); | |
59 | ||
60 | if (ftdi_usb_open(&ftdic, 0x0403, 0x6001) < 0) | |
61 | ftdi_fatal (&ftdic, "Can't open ftdi device"); | |
62 | ||
63 | if (ftdi_enable_bitbang(&ftdic, 0xFF) < 0) | |
64 | ftdi_fatal (&ftdic, "Can't enable bitbang"); | |
65 | ||
66 | for (i=optind; i < argc ; i++) { | |
67 | sscanf (argv[i], "%x", &t); | |
68 | data = t; | |
69 | if(ftdi_write_data(&ftdic, &data, 1) < 0) { | |
70 | fprintf(stderr,"write failed for 0x%x: %s\n", | |
71 | data, ftdi_get_error_string(&ftdic)); | |
72 | } | |
73 | usleep(delay); | |
74 | } | |
75 | ||
76 | ftdi_usb_close(&ftdic); | |
77 | ftdi_deinit(&ftdic); | |
78 | exit (0); | |
79 | } |