Merge pull request #55 from versioduo/midi-packet-interface

Midi: add packet interface

Author: hathach

src/Adafruit_USBD_MIDI.cpp

@@ -35,8 +35,9 @@
 
 Adafruit_USBD_MIDI::Adafruit_USBD_MIDI(void) : _n_cables(1) {}
 
-Adafruit_USBD_MIDI::Adafruit_USBD_MIDI(uint8_t n_cables)
-    : _n_cables(n_cables) {}
+void Adafruit_USBD_MIDI::setCables(uint8_t n_cables) {
+  _n_cables = n_cables;
+}
 
 bool Adafruit_USBD_MIDI::begin(void) {
   if (!USBDevice.addInterface(*this))
@@ -114,4 +115,14 @@ void Adafruit_USBD_MIDI::flush(void) {
   // MIDI Library doen't use flush
 }
 
+bool Adafruit_USBD_MIDI::send(const uint8_t packet[4])
+{
+  return tud_midi_send(packet);
+}
+
+bool Adafruit_USBD_MIDI::receive(uint8_t packet[4])
+{
+  return tud_midi_receive(packet);
+}
+
 #endif

src/Adafruit_USBD_MIDI.h

@@ -30,7 +30,6 @@
 class Adafruit_USBD_MIDI : public Stream, Adafruit_USBD_Interface {
 public:
   Adafruit_USBD_MIDI(void);
-  Adafruit_USBD_MIDI(uint8_t n_cables);
 
   bool begin(void);
 
@@ -47,10 +46,16 @@ class Adafruit_USBD_MIDI : public Stream, Adafruit_USBD_Interface {
   virtual int peek(void);
   virtual void flush(void);
 
+  // Raw MIDI USB packet interface.
+  bool send(const uint8_t packet[4]);
+  bool receive(uint8_t packet[4]);
+
   // from Adafruit_USBD_Interface
   virtual uint16_t getDescriptor(uint8_t itfnum, uint8_t *buf,
                                  uint16_t bufsize);
 
+  void setCables(uint8_t n_cables);
+
 private:
   uint8_t _n_cables;
 };