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/*
* spreadspace avr utils
*
*
* Copyright (C) 2013-2018 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>
#include "serialio.h"
#include "led.h"
/*
LUFA Library
Copyright (C) Dean Camera, 2014.
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 Keyboard_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)
{
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"
#define KEY_PIN PINB
#define KEY_PORT PORTB
#define KEY_DDR DDRB
#define KEY_BIT 0
#define KEY_LP_MAX 255
void key_init(void)
{
KEY_DDR = (1<<KEY_BIT);
KEY_PORT = (1<<KEY_BIT);
}
int main(void)
{
MCUSR &= ~(1 << WDRF);
wdt_disable();
cpu_init();
led_init();
key_init();
serialio_init(38400, 0);
USB_Init();
sei();
MIDI_EventPacket_t MIDIEventOn = (MIDI_EventPacket_t)
{
.Event = MIDI_EVENT(0, MIDI_COMMAND_NOTE_ON),
.Data1 = MIDI_COMMAND_NOTE_ON | 0,
.Data2 = 0,
.Data3 = 0x7F,
};
MIDI_EventPacket_t MIDIEventOff = (MIDI_EventPacket_t)
{
.Event = MIDI_EVENT(0, MIDI_COMMAND_NOTE_OFF),
.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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