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CDC-like blocking behaviour for MIDI

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Also added a dummy readout for MIDI into examples
This commit is contained in:
Alexander Golovanov 2021-02-06 00:01:46 +03:00
parent 2a34be2eb0
commit 9f7143af29
2 changed files with 12 additions and 0 deletions
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6
examples/device/dynamic_configuration/src/main.c
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@ -165,6 +165,12 @@ void midi_task(void)
{
static uint32_t start_ms = 0;
// The MIDI interface always creates input and output port/jack descriptors
// regardless of these being used or not. Therefore incoming traffic should be read
// (possibly just discarded) to avoid the sender blocking in IO
uint8_t packet[4];
while(tud_midi_available()) tud_midi_receive(packet);
// send note every 1000 ms
if (board_millis() - start_ms < 286) return; // not enough time
start_ms += 286;

6
examples/device/midi_test/src/main.c
View File

@ -125,6 +125,12 @@ void midi_task(void)
{
static uint32_t start_ms = 0;
// The MIDI interface always creates input and output port/jack descriptors
// regardless of these being used or not. Therefore incoming traffic should be read
// (possibly just discarded) to avoid the sender blocking in IO
uint8_t packet[4];
while(tud_midi_available()) tud_midi_receive(packet);
// send note every 1000 ms
if (board_millis() - start_ms < 286) return; // not enough time
start_ms += 286;