1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
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();
}
}
|