diff options
Diffstat (limited to 'Demos/Device/LowLevel')
| -rw-r--r-- | Demos/Device/LowLevel/MIDI/MIDI.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/Demos/Device/LowLevel/MIDI/MIDI.c b/Demos/Device/LowLevel/MIDI/MIDI.c index 4dfb9b7e6..c4ec8941f 100644 --- a/Demos/Device/LowLevel/MIDI/MIDI.c +++ b/Demos/Device/LowLevel/MIDI/MIDI.c @@ -190,7 +190,26 @@ void MIDI_Task(void) /* Select the MIDI OUT stream */
Endpoint_SelectEndpoint(MIDI_STREAM_OUT_EPNUM);
- /* Check if endpoint is ready to be read from, if so discard its (unused) data */
+ /* Check if a MIDI command has been received */
if (Endpoint_IsOUTReceived())
- Endpoint_ClearOUT();
+ {
+ USB_MIDI_EventPacket_t MIDIEvent;
+
+ /* Read the MIDI event packet from the endpoint */
+ Endpoint_Read_Stream_LE(&MIDIEvent, sizeof(MIDIEvent));
+
+ if (MIDIEvent.Command == (MIDI_COMMAND_NOTE_ON >> 4))
+ {
+ /* Change LEDs depending on the pitch of the sent note */
+ LEDs_SetAllLEDs(MIDIEvent.Data2 > 64 ? LEDS_LED1 : LEDS_LED2);
+ }
+ else
+ {
+ /* Turn off all LEDs in response to non-Note On messages */
+ LEDs_SetAllLEDs(LEDS_NO_LEDS);
+ }
+
+ /* Clear the endpoint ready for new packet */
+ Endpoint_ClearOUT();
+ }
}
|