Commit | Line | Data |
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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 | |
d3b2d1a7 TM |
8 | #define BUFFER_SIZE 1 |
9 | #define LATENCY 0 | |
233e34bb TM |
10 | |
11 | static snd_rawmidi_t *midi_in, *midi_out; | |
12 | struct ftdi_context ftdi; | |
13 | ||
14 | int main(void) { | |
15 | ||
16 | ||
17 | snd_rawmidi_open(&midi_in, &midi_out, "virtual", SND_RAWMIDI_NONBLOCK); | |
18 | //snd_rawmidi_open(&midi_in, &midi_out, "virtual", 0); | |
19 | ||
20 | ||
21 | if (ftdi_init( &ftdi )) { | |
22 | fprintf(stderr, "usb - init error !\n"); | |
23 | return 1; | |
24 | } | |
25 | ||
26 | if (ftdi_usb_open(&ftdi, 0x0403, 0x6001)) { | |
27 | fprintf(stderr, "usb - open error (cannot find?) !\n"); | |
28 | fprintf(stderr, "ftdi_usb_open failed, error (%s)\n", ftdi_get_error_string(&ftdi)); | |
29 | ftdi_deinit( &ftdi ); | |
30 | return 2; | |
31 | } | |
32 | ||
33 | if (ftdi_usb_reset( &ftdi )) { | |
34 | fprintf(stderr, "usb - reset error !\n"); | |
35 | ftdi_usb_close( &ftdi ); | |
36 | ftdi_deinit( &ftdi ); | |
37 | return 3; | |
38 | } | |
39 | ||
40 | ftdi_disable_bitbang( &ftdi ); | |
41 | ftdi_set_baudrate(&ftdi, BAUD); | |
42 | ||
d3b2d1a7 | 43 | unsigned char buf[BUFFER_SIZE]; |
233e34bb TM |
44 | int ret; |
45 | while(1) { | |
46 | //FTDI2MIDI | |
d3b2d1a7 | 47 | ret = ftdi_read_data(&ftdi, buf, BUFFER_SIZE); |
233e34bb | 48 | if(ret < 0) break; |
d3b2d1a7 | 49 | if(ret > 0) snd_rawmidi_write(midi_out, buf, BUFFER_SIZE); |
233e34bb TM |
50 | |
51 | //MIDI2FTDI | |
d3b2d1a7 TM |
52 | /* |
53 | ret = snd_rawmidi_read(midi_in, buf,BUFFER_SIZE); | |
233e34bb | 54 | if(ret < 0 && ret != -EAGAIN) break; |
d3b2d1a7 TM |
55 | if(ret > 0) ftdi_write_data(&ftdi, buf,BUFFER_SIZE); |
56 | */ | |
57 | usleep(LATENCY); | |
233e34bb TM |
58 | } |
59 | exit(0); | |
60 | } |