Commit | Line | Data |
---|---|---|
233e34bb TM |
1 | #include <stdio.h> |
2 | #include <unistd.h> | |
3 | #include <alsa/asoundlib.h> | |
4 | #include <ftdi.h> | |
5 | ||
6 | ||
7 | #define BAUD 31250 | |
8 | ||
9 | static snd_rawmidi_t *midi_in, *midi_out; | |
10 | struct ftdi_context ftdi; | |
11 | ||
12 | int main(void) { | |
13 | ||
14 | ||
15 | snd_rawmidi_open(&midi_in, &midi_out, "virtual", SND_RAWMIDI_NONBLOCK); | |
16 | //snd_rawmidi_open(&midi_in, &midi_out, "virtual", 0); | |
17 | ||
18 | ||
19 | if (ftdi_init( &ftdi )) { | |
20 | fprintf(stderr, "usb - init error !\n"); | |
21 | return 1; | |
22 | } | |
23 | ||
24 | if (ftdi_usb_open(&ftdi, 0x0403, 0x6001)) { | |
25 | fprintf(stderr, "usb - open error (cannot find?) !\n"); | |
26 | fprintf(stderr, "ftdi_usb_open failed, error (%s)\n", ftdi_get_error_string(&ftdi)); | |
27 | ftdi_deinit( &ftdi ); | |
28 | return 2; | |
29 | } | |
30 | ||
31 | if (ftdi_usb_reset( &ftdi )) { | |
32 | fprintf(stderr, "usb - reset error !\n"); | |
33 | ftdi_usb_close( &ftdi ); | |
34 | ftdi_deinit( &ftdi ); | |
35 | return 3; | |
36 | } | |
37 | ||
38 | ftdi_disable_bitbang( &ftdi ); | |
39 | ftdi_set_baudrate(&ftdi, BAUD); | |
40 | ||
41 | unsigned char buf; | |
42 | int ret; | |
43 | while(1) { | |
44 | //FTDI2MIDI | |
45 | ret = ftdi_read_data(&ftdi,&buf,1); | |
46 | if(ret < 0) break; | |
47 | if(ret > 0) snd_rawmidi_write(midi_out, &buf, 1); | |
48 | ||
49 | //MIDI2FTDI | |
50 | ret = snd_rawmidi_read(midi_in,&buf,1); | |
51 | if(ret < 0 && ret != -EAGAIN) break; | |
52 | if(ret > 0) ftdi_write_data(&ftdi, &buf, 1); | |
53 | ||
54 | usleep(1000); | |
55 | } | |
56 | exit(0); | |
57 | } |