Merge pull request #28 from DatanoiseTV/RP235x-PD-MidiClock

Add rudimentary MIDI clock support.
DatanoiseTV · Oct 13, 2024 · 14d6aaf · 14d6aaf
2 parents 327df27 + 206ea66
commit 14d6aaf
Show file tree

Hide file tree

Showing 2 changed files with 13 additions and 0 deletions.
diff --git a/include/midi_input_usb.h b/include/midi_input_usb.h
@@ -13,6 +13,7 @@ class MIDIInputUSB {
     void setPitchBendCallback(void (*callback)(uint16_t, uint8_t));
     void setAftertouchCallback(void (*callback)(uint8_t, uint8_t));
     void setChannelPressureCallback(void (*callback)(uint8_t, uint8_t));
+    void setClockCallback(void (*callback)());
 
     // MIDI processing function
     void process();
@@ -25,6 +26,7 @@ class MIDIInputUSB {
     std::function<void(uint16_t, uint8_t)> MIDIPitchBendCallback = nullptr;
     std::function<void(uint8_t, uint8_t)> MIDIAftertouchCallback = nullptr;
     std::function<void(uint8_t, uint8_t)> MIDIChannelPressureCallback = nullptr;
+    std::function<void(uint8_t, uint8_t)> MIDIClockCallback = nullptr;
 
     // Helper function for parsing pitch bend data
     uint16_t parsePitchBend(const uint8_t* packet);

diff --git a/src/midi_input_usb.cpp b/src/midi_input_usb.cpp
@@ -26,6 +26,10 @@ void MIDIInputUSB::setChannelPressureCallback(void (*callback)(uint8_t, uint8_t)
     MIDIChannelPressureCallback = callback;
 }
 
+void MIDIInputUSB::setClockCallback(void (*callback)()) {
+    MIDIClockCallback = callback;
+}
+
 // Helper function to parse pitch bend data
 uint16_t MIDIInputUSB::parsePitchBend(const uint8_t* packet) {
     // Combine the two data bytes into a 14-bit pitch bend value
@@ -50,6 +54,13 @@ void MIDIInputUSB::process() {
         uint8_t status = packet[0] >> 4;
         uint8_t channel = packet[0] & 0xF;
 
+        if(packet[0] == 0xF8]{
+            if (MIDIClockCallback != NULL)
+            {
+                MIDIClockCallback();
+            }
+        }
+
         switch (status) {
             case 0x8: // Note Off
                 if (MIDINoteOffCallback != nullptr) {