Added incomplete MIDIToneGenerator project.

[pub/USBasp.git] / Demos / Device / LowLevel / MIDI / MIDI.c

diff --git a/Demos/Device/LowLevel/MIDI/MIDI.c b/Demos/Device/LowLevel/MIDI/MIDI.c
index 4dfb9b7..edfc56f 100644 (file)
--- a/Demos/Device/LowLevel/MIDI/MIDI.c
+++ b/Demos/Device/LowLevel/MIDI/MIDI.c
@@ -1,21 +1,21 @@
 /*\r
              LUFA Library\r
-     Copyright (C) Dean Camera, 2009.\r
+     Copyright (C) Dean Camera, 2010.\r
               \r
   dean [at] fourwalledcubicle [dot] com\r
       www.fourwalledcubicle.com\r
 */\r
 \r
 /*\r
-  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
-  Permission to use, copy, modify, and distribute this software\r
-  and its documentation for any purpose and without fee is hereby\r
-  granted, provided that the above copyright notice appear in all\r
-  copies and that both that the copyright notice and this\r
-  permission notice and warranty disclaimer appear in supporting\r
-  documentation, and that the name of the author not be used in\r
-  advertising or publicity pertaining to distribution of the\r
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+  Permission to use, copy, modify, distribute, and sell this \r
+  software and its documentation for any purpose is hereby granted\r
+  without fee, provided that the above copyright notice appear in \r
+  all copies and that both that the copyright notice and this\r
+  permission notice and warranty disclaimer appear in supporting \r
+  documentation, and that the name of the author not be used in \r
+  advertising or publicity pertaining to distribution of the \r
   software without specific, written prior permission.\r
 \r
   The author disclaim all warranties with regard to this\r
@@ -37,7 +37,7 @@
 #include "MIDI.h"\r
 \r
 /** Main program entry point. This routine configures the hardware required by the application, then\r
- *  starts the scheduler to run the application tasks.\r
+ *  enters a loop to run the application tasks in sequence.\r
  */\r
 int main(void)\r
 {\r
@@ -190,7 +190,27 @@ void MIDI_Task(void)
        /* Select the MIDI OUT stream */\r
        Endpoint_SelectEndpoint(MIDI_STREAM_OUT_EPNUM);\r
 \r
-       /* Check if endpoint is ready to be read from, if so discard its (unused) data */\r
+       /* Check if a MIDI command has been received */\r
        if (Endpoint_IsOUTReceived())\r
-         Endpoint_ClearOUT();\r
+       {\r
+               USB_MIDI_EventPacket_t MIDIEvent;\r
+                       \r
+               /* Read the MIDI event packet from the endpoint */\r
+               Endpoint_Read_Stream_LE(&MIDIEvent, sizeof(MIDIEvent));\r
+       \r
+               /* Check to see if the sent command is a note on message with a non-zero velocity */\r
+               if ((MIDIEvent.Command == (MIDI_COMMAND_NOTE_ON >> 4)) && (MIDIEvent.Data3 > 0))\r
+               {\r
+                       /* Change LEDs depending on the pitch of the sent note */\r
+                       LEDs_SetAllLEDs(MIDIEvent.Data2 > 64 ? LEDS_LED1 : LEDS_LED2);\r
+               }\r
+               else\r
+               {\r
+                       /* Turn off all LEDs in response to non Note On messages */\r
+                       LEDs_SetAllLEDs(LEDS_NO_LEDS);\r
+               }\r
+       \r
+               /* Clear the endpoint ready for new packet */\r
+               Endpoint_ClearOUT();\r
+       }\r
 }\r