initial commit with fimware code of avr-projects

1 files changed, 166 insertions, 0 deletions

diff --git a/firmware/dolmetsch-ctl.c b/firmware/dolmetsch-ctl.c
new file mode 100644
index 0000000..1308a5b
--- /dev/null
+++ b/firmware/dolmetsch-ctl.c
@@ -0,0 +1,166 @@
+/*
+ *  spreadspace avr projects
+ *
+ *
+ *  Copyright (C) 2013-2015 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of spreadspace avr projects.
+ *
+ *  spreadspace avr projects is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  spreadspace avr projects is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with spreadspace avr projects. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <avr/io.h>
+#include <avr/wdt.h>
+#include <avr/interrupt.h>
+#include <avr/power.h>
+#include <stdio.h>
+
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2012.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+#include <LUFA/Version.h>
+#include <LUFA/Drivers/USB/USB.h>
+#include "lufa-descriptor-midi.h"
+
+/** LUFA MIDI Class driver interface configuration and state information. This structure is
+ *  passed to all MIDI Class driver functions, so that multiple instances of the same class
+ *  within a device can be differentiated from one another.
+ */
+USB_ClassInfo_MIDI_Device_t MIDI_Interface =
+	{
+		.Config =
+			{
+				.StreamingInterfaceNumber = INTERFACE_ID_AudioStream,
+				.DataINEndpoint           =
+					{
+						.Address          = MIDI_STREAM_IN_EPADDR,
+						.Size             = MIDI_STREAM_EPSIZE,
+						.Banks            = 1,
+					},
+				.DataOUTEndpoint          =
+					{
+						.Address          = MIDI_STREAM_OUT_EPADDR,
+						.Size             = MIDI_STREAM_EPSIZE,
+						.Banks            = 1,
+					},
+			},
+	};
+
+/** Event handler for the library USB Configuration Changed event. */
+void EVENT_USB_Device_ConfigurationChanged(void)
+{
+  MIDI_Device_ConfigureEndpoints(&MIDI_Interface);
+}
+
+/** Event handler for the library USB Control Request reception event. */
+void EVENT_USB_Device_ControlRequest(void)
+{
+  MIDI_Device_ProcessControlRequest(&MIDI_Interface);
+}
+
+/* end LUFA MIDI Class driver specific definitions*/
+
+#include "util.h"
+#include "keypad.h"
+#include "eventqueue.h"
+
+#define MIDI_CABLENUMBER 1
+
+static void process_incoming_midi(void)
+{
+  MIDI_EventPacket_t ReceivedMIDIEvent;
+  while(MIDI_Device_ReceiveEventPacket(&MIDI_Interface, &ReceivedMIDIEvent)) {
+    uint8_t cmd = ReceivedMIDIEvent.Data1 & 0xF0;
+    uint8_t note = ReceivedMIDIEvent.Data2;
+    uint8_t value = ReceivedMIDIEvent.Data3 & 0x7F;
+    if(cmd == MIDI_COMMAND_PROGRAM_CHANGE) {
+      switch(note) {
+        case 127: reset2bootloader();
+      }
+      continue;
+    }
+    if((note >= KEYPAD_MIDI_NOTE_OFFSET && note < KEYPAD_MIDI_NOTE_OFFSET + KEYPAD_NUM_KEYS) ||     // KEYPAD
+       note == KEYPAD_MIDI_NOTE_ALL) {
+      if(cmd == MIDI_COMMAND_CONTROL_CHANGE) {
+        switch(value) {
+          case 0: keypad_led_off(note - KEYPAD_MIDI_NOTE_OFFSET); break;
+          case 1: keypad_led_on(note - KEYPAD_MIDI_NOTE_OFFSET); break;
+          case 2: keypad_led_toggle(note - KEYPAD_MIDI_NOTE_OFFSET); break;
+          default: keypad_led_blink(note, value); break;
+        }
+      }
+    }
+  }
+}
+
+static void process_outgoing_midi(void)
+{
+  MIDI_EventPacket_t MIDIEventOn = (MIDI_EventPacket_t)
+    {
+      .Event       = MIDI_EVENT(MIDI_CHANNEL(MIDI_CABLENUMBER), MIDI_COMMAND_NOTE_ON),
+      .Data1       = MIDI_COMMAND_NOTE_ON | 0,
+      .Data2       = 0,
+      .Data3       = 0x7F,
+    };
+  MIDI_EventPacket_t MIDIEventOff = (MIDI_EventPacket_t)
+    {
+      .Event       = MIDI_EVENT(MIDI_CHANNEL(MIDI_CABLENUMBER), MIDI_COMMAND_NOTE_OFF),
+      .Data1       = MIDI_COMMAND_NOTE_OFF | 0,
+      .Data2       = 0,
+      .Data3       = 0,
+    };
+
+  uint8_t key, state;
+  while(eventqueue_pop(&key, &state)) {
+    if (USB_DeviceState == DEVICE_STATE_Configured) {
+      MIDI_EventPacket_t* MIDIEvent = NULL;
+      MIDIEvent = state ? &MIDIEventOn : &MIDIEventOff;
+      MIDIEvent->Data2 = key;
+
+      if(MIDIEvent)
+        MIDI_Device_SendEventPacket(&MIDI_Interface, MIDIEvent);
+    }
+  }
+  if (USB_DeviceState == DEVICE_STATE_Configured)
+    MIDI_Device_Flush(&MIDI_Interface);
+}
+
+int main(void)
+{
+  MCUSR &= ~(1 << WDRF);
+  wdt_disable();
+
+  cpu_init();
+  jtag_disable();
+  eventqueue_init();
+  keypad_init();
+
+  USB_Init();
+  sei();
+
+  for(;;) {
+    process_incoming_midi();
+
+    keypad_task();
+
+    process_outgoing_midi();
+
+    MIDI_Device_USBTask(&MIDI_Interface);
+    USB_USBTask();
+  }
+}