diff options
Diffstat (limited to 'software/rhmidi/rhmidi.c')
| -rw-r--r-- | software/rhmidi/rhmidi.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/software/rhmidi/rhmidi.c b/software/rhmidi/rhmidi.c new file mode 100644 index 0000000..c305462 --- /dev/null +++ b/software/rhmidi/rhmidi.c @@ -0,0 +1,158 @@ +/*
+ * spreadspace avr utils
+ *
+ *
+ * Copyright (C) 2013 Christian Pointner <equinox@spreadspace.org>
+ *
+ * This file is part of spreadspace avr utils.
+ *
+ * spreadspace avr utils 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 utils 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 utils. 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"
+#include "LUFA/Drivers/Peripheral/Serial.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 Keyboard_MIDI_Interface =
+ {
+ .Config =
+ {
+ .StreamingInterfaceNumber = 1,
+
+ .DataINEndpointNumber = MIDI_STREAM_IN_EPNUM,
+ .DataINEndpointSize = MIDI_STREAM_EPSIZE,
+ .DataINEndpointDoubleBank = false,
+
+ .DataOUTEndpointNumber = MIDI_STREAM_OUT_EPNUM,
+ .DataOUTEndpointSize = MIDI_STREAM_EPSIZE,
+ .DataOUTEndpointDoubleBank = false,
+ },
+ };
+
+/** Event handler for the library USB Configuration Changed event. */
+void EVENT_USB_Device_ConfigurationChanged(void)
+{
+ bool ConfigSuccess = true;
+
+ ConfigSuccess &= MIDI_Device_ConfigureEndpoints(&Keyboard_MIDI_Interface);
+}
+
+/** Event handler for the library USB Control Request reception event. */
+void EVENT_USB_Device_ControlRequest(void)
+{
+ MIDI_Device_ProcessControlRequest(&Keyboard_MIDI_Interface);
+}
+
+/* end LUFA MIDI Class driver specific definitions*/
+
+#include "util.h"
+#include "led.h"
+
+static FILE serial_stream;
+
+#define KEY_PIN PINF
+#define KEY_PORT PORTF
+#define KEY_DDR DDRF
+#define KEY_BIT 0
+
+#define KEY_LP_MAX 255
+
+void key_init(void)
+{
+ KEY_DDR = KEY_DDR & ~(1<<KEY_BIT);
+ KEY_PORT |= (1<<KEY_BIT);
+}
+
+int main(void)
+{
+ MCUSR &= ~(1 << WDRF);
+ wdt_disable();
+
+ cpu_init();
+ led_init();
+ key_init();
+
+ Serial_Init(38400, 0);
+ Serial_CreateStream(&serial_stream);
+ stdin = stdout = stderr = &serial_stream;
+
+ USB_Init();
+ sei();
+
+ MIDI_EventPacket_t MIDIEventOn = (MIDI_EventPacket_t)
+ {
+ .CableNumber = 0,
+ .Command = (MIDI_COMMAND_NOTE_ON >> 4),
+ .Data1 = MIDI_COMMAND_NOTE_ON | 0,
+ .Data2 = 0,
+ .Data3 = 0x7F,
+ };
+ MIDI_EventPacket_t MIDIEventOff = (MIDI_EventPacket_t)
+ {
+ .CableNumber = 0,
+ .Command = (MIDI_COMMAND_NOTE_OFF >> 4),
+ .Data1 = MIDI_COMMAND_NOTE_OFF | 0,
+ .Data2 = 0,
+ .Data3 = 0,
+ };
+
+ static uint8_t last_state = (1<<KEY_BIT);
+ static uint8_t lp_cnt = 0;
+ for(;;) {
+
+ MIDI_EventPacket_t ReceivedMIDIEvent;
+ while(MIDI_Device_ReceiveEventPacket(&Keyboard_MIDI_Interface, &ReceivedMIDIEvent)) {
+ led_on();
+ printf("%02X %02X %02X\r\n", ReceivedMIDIEvent.Data1, ReceivedMIDIEvent.Data2, ReceivedMIDIEvent.Data3);
+ led_off();
+ }
+
+ uint8_t state = KEY_PIN & (1<<KEY_BIT);
+ if(state != last_state)
+ lp_cnt++;
+ else
+ lp_cnt += lp_cnt ? -1 : 0;
+
+ if(lp_cnt >= KEY_LP_MAX) {
+ MIDI_EventPacket_t* MIDIEvent = state ? &MIDIEventOff : &MIDIEventOn;
+ MIDI_Device_SendEventPacket(&Keyboard_MIDI_Interface, MIDIEvent);
+ MIDI_Device_Flush(&Keyboard_MIDI_Interface);
+
+ last_state = state;
+ lp_cnt = 0;
+ }
+
+ MIDI_Device_USBTask(&Keyboard_MIDI_Interface);
+ USB_USBTask();
+ }
+}
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