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Diffstat (limited to 'examples/host/midi2_host/src/main.c')
| -rw-r--r-- | examples/host/midi2_host/src/main.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/examples/host/midi2_host/src/main.c b/examples/host/midi2_host/src/main.c new file mode 100644 index 000000000..d81e77a33 --- /dev/null +++ b/examples/host/midi2_host/src/main.c @@ -0,0 +1,163 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2026 Saulo Verissimo + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +// Minimal USB-MIDI 2.0 host example. +// Receives UMP from any MIDI 2.0 device, prints each packet to stdout. + +#include <stdio.h> +#include <string.h> +#include "bsp/board_api.h" +#include "tusb.h" +#include "class/midi/midi2_host.h" + +//--------------------------------------------------------------------+ +// State +//--------------------------------------------------------------------+ + +TU_ATTR_UNUSED static uint8_t midi2_idx = 0xFF; + +//--------------------------------------------------------------------+ +// UMP printer - shows MT and word(s) in hex; decodes Channel Voice +//--------------------------------------------------------------------+ + +static void print_ump(const uint32_t* words, uint8_t wc) { + uint8_t mt = (uint8_t)((words[0] >> 28) & 0x0F); + uint8_t group = (uint8_t)((words[0] >> 24) & 0x0F); + + if (mt == 0x4 && wc >= 2) { + // MIDI 2.0 Channel Voice + uint8_t status = (uint8_t)((words[0] >> 20) & 0x0F); + uint8_t channel = (uint8_t)((words[0] >> 16) & 0x0F); + uint8_t data1 = (uint8_t)((words[0] >> 8) & 0x7F); + switch (status) { + case 0x9: + printf("[g%u ch%u] M2 NoteOn n=%u vel=%04X attr=%04X\r\n", + group, channel, data1, + (unsigned)((words[1] >> 16) & 0xFFFF), + (unsigned)(words[1] & 0xFFFF)); + break; + case 0x8: + printf("[g%u ch%u] M2 NoteOff n=%u vel=%04X\r\n", + group, channel, data1, + (unsigned)((words[1] >> 16) & 0xFFFF)); + break; + case 0xB: + printf("[g%u ch%u] M2 CC#%u = %08lX\r\n", + group, channel, data1, (unsigned long)words[1]); + break; + case 0xC: + printf("[g%u ch%u] M2 ProgChg %u\r\n", + group, channel, (unsigned)((words[1] >> 24) & 0x7F)); + break; + case 0xD: + printf("[g%u ch%u] M2 ChanPress %08lX\r\n", + group, channel, (unsigned long)words[1]); + break; + case 0xE: + printf("[g%u ch%u] M2 PitchBend %08lX\r\n", + group, channel, (unsigned long)words[1]); + break; + default: + printf("[g%u ch%u] M2 status=0x%X w0=%08lX w1=%08lX\r\n", + group, channel, status, + (unsigned long)words[0], (unsigned long)words[1]); + break; + } + } else if (mt == 0x2 && wc == 1) { + // MIDI 1.0 Channel Voice + uint8_t status = (uint8_t)((words[0] >> 16) & 0xFF); + uint8_t data1 = (uint8_t)((words[0] >> 8) & 0x7F); + uint8_t data2 = (uint8_t)(words[0] & 0x7F); + printf("[g%u] M1 %02X %02X %02X\r\n", group, status, data1, data2); + } else { + printf("UMP MT=0x%X wc=%u w0=%08lX\r\n", + mt, wc, (unsigned long)words[0]); + } +} + +//--------------------------------------------------------------------+ +// MIDI 2.0 Host Callbacks +//--------------------------------------------------------------------+ + +void tuh_midi2_descriptor_cb(uint8_t idx, const tuh_midi2_descriptor_cb_t* d) { + (void)idx; + printf("MIDI2 descriptor: %s, RX cables=%u TX cables=%u\r\n", + d->protocol_version ? "MIDI 2.0" : "MIDI 1.0", + d->rx_cable_count, d->tx_cable_count); +} + +void tuh_midi2_mount_cb(uint8_t idx, const tuh_midi2_mount_cb_t* m) { + midi2_idx = idx; + printf("MIDI2 mounted: idx=%u protocol=%s\r\n", + idx, m->protocol_version ? "MIDI 2.0" : "MIDI 1.0"); +} + +void tuh_midi2_rx_cb(uint8_t idx, uint32_t xferred_bytes) { + (void)xferred_bytes; + + uint32_t words[16]; + while (1) { + uint32_t n = tuh_midi2_ump_read(idx, words, 16); + if (n == 0) break; + + uint32_t i = 0; + while (i < n) { + uint8_t mt = (uint8_t)((words[i] >> 28) & 0x0F); + uint8_t wc = midi2_ump_word_count(mt); + if (i + wc > n) break; + print_ump(&words[i], wc); + i += wc; + } + } +} + +void tuh_midi2_tx_cb(uint8_t idx, uint32_t xferred_bytes) { + (void)idx; (void)xferred_bytes; +} + +void tuh_midi2_umount_cb(uint8_t idx) { + (void)idx; + midi2_idx = 0xFF; + printf("MIDI2 unmounted\r\n"); +} + +//--------------------------------------------------------------------+ +// Main +//--------------------------------------------------------------------+ + +int main(void) { + board_init(); + + printf("\r\nTinyUSB Host MIDI 2.0 Example\r\n"); + + tusb_rhport_init_t host_init = { + .role = TUSB_ROLE_HOST, + .speed = TUSB_SPEED_AUTO, + }; + tusb_init(BOARD_TUH_RHPORT, &host_init); + + while (1) { + tuh_task(); + } +} |