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93
keyboard/planck/Config/LUFAConfig.h Executable file
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/*
LUFA Library
Copyright (C) Dean Camera, 2012.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2012 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
without fee, provided that the above copyright notice appear in
all copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of the author not be used in
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaim all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
*/
/** \file
* \brief LUFA Library Configuration Header File
*
* This header file is used to configure LUFA's compile time options,
* as an alternative to the compile time constants supplied through
* a makefile.
*
* For information on what each token does, refer to the LUFA
* manual section "Summary of Compile Tokens".
*/
#ifndef _LUFA_CONFIG_H_
#define _LUFA_CONFIG_H_
#if (ARCH == ARCH_AVR8)
/* Non-USB Related Configuration Tokens: */
// #define DISABLE_TERMINAL_CODES
/* USB Class Driver Related Tokens: */
// #define HID_HOST_BOOT_PROTOCOL_ONLY
// #define HID_STATETABLE_STACK_DEPTH {Insert Value Here}
// #define HID_USAGE_STACK_DEPTH {Insert Value Here}
// #define HID_MAX_COLLECTIONS {Insert Value Here}
// #define HID_MAX_REPORTITEMS {Insert Value Here}
// #define HID_MAX_REPORT_IDS {Insert Value Here}
// #define NO_CLASS_DRIVER_AUTOFLUSH
/* General USB Driver Related Tokens: */
// #define ORDERED_EP_CONFIG
#define USE_STATIC_OPTIONS (USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)
#define USB_DEVICE_ONLY
// #define USB_HOST_ONLY
// #define USB_STREAM_TIMEOUT_MS {Insert Value Here}
// #define NO_LIMITED_CONTROLLER_CONNECT
// #define NO_SOF_EVENTS
/* USB Device Mode Driver Related Tokens: */
// #define USE_RAM_DESCRIPTORS
#define USE_FLASH_DESCRIPTORS
// #define USE_EEPROM_DESCRIPTORS
// #define NO_INTERNAL_SERIAL
#define FIXED_CONTROL_ENDPOINT_SIZE 8
// #define DEVICE_STATE_AS_GPIOR {Insert Value Here}
#define FIXED_NUM_CONFIGURATIONS 1
// #define CONTROL_ONLY_DEVICE
// #define INTERRUPT_CONTROL_ENDPOINT
// #define NO_DEVICE_REMOTE_WAKEUP
// #define NO_DEVICE_SELF_POWER
/* USB Host Mode Driver Related Tokens: */
// #define HOST_STATE_AS_GPIOR {Insert Value Here}
// #define USB_HOST_TIMEOUT_MS {Insert Value Here}
// #define HOST_DEVICE_SETTLE_DELAY_MS {Insert Value Here}
// #define NO_AUTO_VBUS_MANAGEMENT
// #define INVERTED_VBUS_ENABLE_LINE
#else
#error Unsupported architecture for this LUFA configuration file.
#endif
#endif

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protocol/lufa/midi/bytequeue/COPYING Executable file
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PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program 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
(at your option) any later version.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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protocol/lufa/midi/bytequeue/bytequeue.c Executable file
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//this is a single reader [maybe multiple writer?] byte queue
//Copyright 2008 Alex Norman
//writen by Alex Norman
//
//This file is part of avr-bytequeue.
//
//avr-bytequeue 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
//(at your option) any later version.
//
//avr-bytequeue 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 avr-bytequeue. If not, see <http://www.gnu.org/licenses/>.
#include "bytequeue.h"
#include "interrupt_setting.h"
void bytequeue_init(byteQueue_t * queue, uint8_t * dataArray, byteQueueIndex_t arrayLen){
queue->length = arrayLen;
queue->data = dataArray;
queue->start = queue->end = 0;
}
bool bytequeue_enqueue(byteQueue_t * queue, uint8_t item){
interrupt_setting_t setting = store_and_clear_interrupt();
//full
if(((queue->end + 1) % queue->length) == queue->start){
restore_interrupt_setting(setting);
return false;
} else {
queue->data[queue->end] = item;
queue->end = (queue->end + 1) % queue->length;
restore_interrupt_setting(setting);
return true;
}
}
byteQueueIndex_t bytequeue_length(byteQueue_t * queue){
byteQueueIndex_t len;
interrupt_setting_t setting = store_and_clear_interrupt();
if(queue->end >= queue->start)
len = queue->end - queue->start;
else
len = (queue->length - queue->start) + queue->end;
restore_interrupt_setting(setting);
return len;
}
//we don't need to avoid interrupts if there is only one reader
uint8_t bytequeue_get(byteQueue_t * queue, byteQueueIndex_t index){
return queue->data[(queue->start + index) % queue->length];
}
//we just update the start index to remove elements
void bytequeue_remove(byteQueue_t * queue, byteQueueIndex_t numToRemove){
interrupt_setting_t setting = store_and_clear_interrupt();
queue->start = (queue->start + numToRemove) % queue->length;
restore_interrupt_setting(setting);
}

59
protocol/lufa/midi/bytequeue/bytequeue.h Executable file
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//this is a single reader [maybe multiple writer?] byte queue
//Copyright 2008 Alex Norman
//writen by Alex Norman
//
//This file is part of avr-bytequeue.
//
//avr-bytequeue 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
//(at your option) any later version.
//
//avr-bytequeue 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 avr-bytequeue. If not, see <http://www.gnu.org/licenses/>.
#ifndef BYTEQUEUE_H
#define BYTEQUEUE_H
#ifdef __cplusplus
extern "C" {
#endif
#include <inttypes.h>
#include <stdbool.h>
typedef uint8_t byteQueueIndex_t;
typedef struct {
byteQueueIndex_t start;
byteQueueIndex_t end;
byteQueueIndex_t length;
uint8_t * data;
} byteQueue_t;
//you must have a queue, an array of data which the queue will use, and the length of that array
void bytequeue_init(byteQueue_t * queue, uint8_t * dataArray, byteQueueIndex_t arrayLen);
//add an item to the queue, returns false if the queue is full
bool bytequeue_enqueue(byteQueue_t * queue, uint8_t item);
//get the length of the queue
byteQueueIndex_t bytequeue_length(byteQueue_t * queue);
//this grabs data at the index given [starting at queue->start]
uint8_t bytequeue_get(byteQueue_t * queue, byteQueueIndex_t index);
//update the index in the queue to reflect data that has been dealt with
void bytequeue_remove(byteQueue_t * queue, byteQueueIndex_t numToRemove);
#ifdef __cplusplus
}
#endif
#endif

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protocol/lufa/midi/bytequeue/interrupt_setting.c Executable file
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//Copyright 20010 Alex Norman
//writen by Alex Norman
//
//This file is part of avr-bytequeue.
//
//avr-bytequeue 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
//(at your option) any later version.
//
//avr-bytequeue 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 avr-bytequeue. If not, see <http://www.gnu.org/licenses/>.
//AVR specific code
//should be able to port to other systems by simply providing chip specific
//implementations of the typedef and these functions
#include "interrupt_setting.h"
#include <avr/interrupt.h>
interrupt_setting_t store_and_clear_interrupt(void) {
uint8_t sreg = SREG;
cli();
return sreg;
}
void restore_interrupt_setting(interrupt_setting_t setting) {
SREG = setting;
}

39
protocol/lufa/midi/bytequeue/interrupt_setting.h Executable file
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//Copyright 20010 Alex Norman
//writen by Alex Norman
//
//This file is part of avr-bytequeue.
//
//avr-bytequeue 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
//(at your option) any later version.
//
//avr-bytequeue 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 avr-bytequeue. If not, see <http://www.gnu.org/licenses/>.
#ifndef INTERRUPT_SETTING_H
#define INTERRUPT_SETTING_H
#ifdef __cplusplus
extern "C" {
#endif
#include <inttypes.h>
//AVR specific typedef
typedef uint8_t interrupt_setting_t;
interrupt_setting_t store_and_clear_interrupt(void);
void restore_interrupt_setting(interrupt_setting_t setting);
#ifdef __cplusplus
}
#endif
#endif

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protocol/lufa/midi/midi.c Executable file
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//midi for embedded chips,
//Copyright 2010 Alex Norman
//
//This file is part of avr-midi.
//
//avr-midi 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
//(at your option) any later version.
//
//avr-midi 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 avr-midi. If not, see <http://www.gnu.org/licenses/>.
#include "midi.h"
#include <string.h> //for memcpy
#define MIN(x,y) (((x) < (y)) ? (x) : (y))
#ifndef NULL
#define NULL 0
#endif
bool midi_is_statusbyte(uint8_t theByte){
return (bool)(theByte & MIDI_STATUSMASK);
}
bool midi_is_realtime(uint8_t theByte){
return (theByte >= MIDI_CLOCK);
}
midi_packet_length_t midi_packet_length(uint8_t status){
switch(status & 0xF0){
case MIDI_CC:
case MIDI_NOTEON:
case MIDI_NOTEOFF:
case MIDI_AFTERTOUCH:
case MIDI_PITCHBEND:
return THREE;
case MIDI_PROGCHANGE:
case MIDI_CHANPRESSURE:
case MIDI_SONGSELECT:
return TWO;
case 0xF0:
switch(status) {
case MIDI_CLOCK:
case MIDI_TICK:
case MIDI_START:
case MIDI_CONTINUE:
case MIDI_STOP:
case MIDI_ACTIVESENSE:
case MIDI_RESET:
case MIDI_TUNEREQUEST:
return ONE;
case MIDI_SONGPOSITION:
return THREE;
case MIDI_TC_QUARTERFRAME:
case MIDI_SONGSELECT:
return TWO;
case SYSEX_END:
case SYSEX_BEGIN:
default:
return UNDEFINED;
}
default:
return UNDEFINED;
}
}
void midi_send_cc(MidiDevice * device, uint8_t chan, uint8_t num, uint8_t val){
//CC Status: 0xB0 to 0xBF where the low nibble is the MIDI channel.
//CC Data: Controller Num, Controller Val
device->send_func(device, 3,
MIDI_CC | (chan & MIDI_CHANMASK),
num & 0x7F,
val & 0x7F);
}
void midi_send_noteon(MidiDevice * device, uint8_t chan, uint8_t num, uint8_t vel){
//Note Data: Note Num, Note Velocity
device->send_func(device, 3,
MIDI_NOTEON | (chan & MIDI_CHANMASK),
num & 0x7F,
vel & 0x7F);
}
void midi_send_noteoff(MidiDevice * device, uint8_t chan, uint8_t num, uint8_t vel){
//Note Data: Note Num, Note Velocity
device->send_func(device, 3,
MIDI_NOTEOFF | (chan & MIDI_CHANMASK),
num & 0x7F,
vel & 0x7F);
}
void midi_send_aftertouch(MidiDevice * device, uint8_t chan, uint8_t note_num, uint8_t amt){
device->send_func(device, 3,
MIDI_AFTERTOUCH | (chan & MIDI_CHANMASK),
note_num & 0x7F,
amt & 0x7F);
}
//XXX does this work right?
//amt in range -0x2000, 0x1fff
//uAmt should be in range..
//0x0000 to 0x3FFF
void midi_send_pitchbend(MidiDevice * device, uint8_t chan, int16_t amt){
uint16_t uAmt;
//check range
if(amt > 0x1fff){
uAmt = 0x3FFF;
} else if(amt < -0x2000){
uAmt = 0;
} else {
uAmt = amt + 0x2000;
}
device->send_func(device, 3,
MIDI_PITCHBEND | (chan & MIDI_CHANMASK),
uAmt & 0x7F,
(uAmt >> 7) & 0x7F);
}
void midi_send_programchange(MidiDevice * device, uint8_t chan, uint8_t num){
device->send_func(device, 2,
MIDI_PROGCHANGE | (chan & MIDI_CHANMASK),
num & 0x7F,
0);
}
void midi_send_channelpressure(MidiDevice * device, uint8_t chan, uint8_t amt){
device->send_func(device, 2,
MIDI_CHANPRESSURE | (chan & MIDI_CHANMASK),
amt & 0x7F,
0);
}
void midi_send_clock(MidiDevice * device){
device->send_func(device, 1, MIDI_CLOCK, 0, 0);
}
void midi_send_tick(MidiDevice * device){
device->send_func(device, 1, MIDI_TICK, 0, 0);
}
void midi_send_start(MidiDevice * device){
device->send_func(device, 1, MIDI_START, 0, 0);
}
void midi_send_continue(MidiDevice * device){
device->send_func(device, 1, MIDI_CONTINUE, 0, 0);
}
void midi_send_stop(MidiDevice * device){
device->send_func(device, 1, MIDI_STOP, 0, 0);
}
void midi_send_activesense(MidiDevice * device){
device->send_func(device, 1, MIDI_ACTIVESENSE, 0, 0);
}
void midi_send_reset(MidiDevice * device){
device->send_func(device, 1, MIDI_RESET, 0, 0);
}
void midi_send_tcquarterframe(MidiDevice * device, uint8_t time){
device->send_func(device, 2,
MIDI_TC_QUARTERFRAME,
time & 0x7F,
0);
}
//XXX is this right?
void midi_send_songposition(MidiDevice * device, uint16_t pos){
device->send_func(device, 3,
MIDI_SONGPOSITION,
pos & 0x7F,
(pos >> 7) & 0x7F);
}
void midi_send_songselect(MidiDevice * device, uint8_t song){
device->send_func(device, 2,
MIDI_SONGSELECT,
song & 0x7F,
0);
}
void midi_send_tunerequest(MidiDevice * device){
device->send_func(device, 1, MIDI_TUNEREQUEST, 0, 0);
}
void midi_send_byte(MidiDevice * device, uint8_t b){
device->send_func(device, 1, b, 0, 0);
}
void midi_send_data(MidiDevice * device, uint16_t count, uint8_t byte0, uint8_t byte1, uint8_t byte2){
//ensure that the count passed along is always 3 or lower
if (count > 3) {
//TODO how to do this correctly?
}
device->send_func(device, count, byte0, byte1, byte2);
}
void midi_send_array(MidiDevice * device, uint16_t count, uint8_t * array) {
uint16_t i;
for (i = 0; i < count; i += 3) {
uint8_t b[3] = { 0, 0, 0 };
uint16_t to_send = count - i;
to_send = (to_send > 3) ? 3 : to_send;
memcpy(b, array + i, to_send);
midi_send_data(device, to_send, b[0], b[1], b[2]);
}
}
void midi_register_cc_callback(MidiDevice * device, midi_three_byte_func_t func){
device->input_cc_callback = func;
}
void midi_register_noteon_callback(MidiDevice * device, midi_three_byte_func_t func){
device->input_noteon_callback = func;
}
void midi_register_noteoff_callback(MidiDevice * device, midi_three_byte_func_t func){
device->input_noteoff_callback = func;
}
void midi_register_aftertouch_callback(MidiDevice * device, midi_three_byte_func_t func){
device->input_aftertouch_callback = func;
}
void midi_register_pitchbend_callback(MidiDevice * device, midi_three_byte_func_t func){
device->input_pitchbend_callback = func;
}
void midi_register_songposition_callback(MidiDevice * device, midi_three_byte_func_t func){
device->input_songposition_callback = func;
}
void midi_register_progchange_callback(MidiDevice * device, midi_two_byte_func_t func) {
device->input_progchange_callback = func;
}
void midi_register_chanpressure_callback(MidiDevice * device, midi_two_byte_func_t func) {
device->input_chanpressure_callback = func;
}
void midi_register_songselect_callback(MidiDevice * device, midi_two_byte_func_t func) {
device->input_songselect_callback = func;
}
void midi_register_tc_quarterframe_callback(MidiDevice * device, midi_two_byte_func_t func) {
device->input_tc_quarterframe_callback = func;
}
void midi_register_realtime_callback(MidiDevice * device, midi_one_byte_func_t func){
device->input_realtime_callback = func;
}
void midi_register_tunerequest_callback(MidiDevice * device, midi_one_byte_func_t func){
device->input_tunerequest_callback = func;
}
void midi_register_sysex_callback(MidiDevice * device, midi_sysex_func_t func) {
device->input_sysex_callback = func;
}
void midi_register_fallthrough_callback(MidiDevice * device, midi_var_byte_func_t func){
device->input_fallthrough_callback = func;
}
void midi_register_catchall_callback(MidiDevice * device, midi_var_byte_func_t func){
device->input_catchall_callback = func;
}

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protocol/lufa/midi/midi.h Executable file
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//midi for embedded chips,
//Copyright 2010 Alex Norman
//
//This file is part of avr-midi.
//
//avr-midi 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
//(at your option) any later version.
//
//avr-midi 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 avr-midi. If not, see <http://www.gnu.org/licenses/>.
/**
* @file
* @brief The main midi functions
*
* This file includes all of the functions you need to set up and process a
* midi device, send midi, and register midi callbacks.
*
*/
#ifndef XNOR_MIDI_H
#define XNOR_MIDI_H
#ifdef __cplusplus
extern "C" {
#endif
#include "midi_device.h"
#include "midi_function_types.h"
/**
* @defgroup midi_device_setup_process Device initialization and processing
* @brief These are method that you must use to initialize and run a device
*
* @{
*/
/**
* @brief Initialize a device
*
* You must call this before using the device in question.
*
* @param device the device to initialize
*/
void midi_device_init(MidiDevice * device); // [implementation in midi_device.c]
/**
* @brief Process input data
*
* This method drives the input processing, you must call this method frequently
* if you expect to have your input callbacks called.
*
* @param device the device to process
*/
void midi_device_process(MidiDevice * device); // [implementation in midi_device.c]
/**@}*/
/**
* @defgroup send_functions Midi send functions
* @brief These are the functions you use to send midi data through a device.
* @{
*/
/**
* @brief Send a control change message (cc) via the given device.
*
* @param device the device to use for sending
* @param chan the channel to send on, 0-15
* @param num the cc num
* @param val the value of that cc num
*/
void midi_send_cc(MidiDevice * device, uint8_t chan, uint8_t num, uint8_t val);
/**
* @brief Send a note on message via the given device.
*
* @param device the device to use for sending
* @param chan the channel to send on, 0-15
* @param num the note number
* @param vel the note velocity
*/
void midi_send_noteon(MidiDevice * device, uint8_t chan, uint8_t num, uint8_t vel);
/**
* @brief Send a note off message via the given device.
*
* @param device the device to use for sending
* @param chan the channel to send on, 0-15
* @param num the note number
* @param vel the note velocity
*/
void midi_send_noteoff(MidiDevice * device, uint8_t chan, uint8_t num, uint8_t vel);
/**
* @brief Send an after touch message via the given device.
*
* @param device the device to use for sending
* @param chan the channel to send on, 0-15
* @param note_num the note number
* @param amt the after touch amount
*/
void midi_send_aftertouch(MidiDevice * device, uint8_t chan, uint8_t note_num, uint8_t amt);
/**
* @brief Send a pitch bend message via the given device.
*
* @param device the device to use for sending
* @param chan the channel to send on, 0-15
* @param amt the bend amount range: -8192..8191, 0 means no bend
*/
void midi_send_pitchbend(MidiDevice * device, uint8_t chan, int16_t amt); //range -8192, 8191
/**
* @brief Send a program change message via the given device.
*
* @param device the device to use for sending
* @param chan the channel to send on, 0-15
* @param num the program to change to
*/
void midi_send_programchange(MidiDevice * device, uint8_t chan, uint8_t num);
/**
* @brief Send a channel pressure message via the given device.
*
* @param device the device to use for sending
* @param chan the channel to send on, 0-15
* @param amt the amount of channel pressure
*/
void midi_send_channelpressure(MidiDevice * device, uint8_t chan, uint8_t amt);
/**
* @brief Send a clock message via the given device.
*
* @param device the device to use for sending
*/
void midi_send_clock(MidiDevice * device);
/**
* @brief Send a tick message via the given device.
*
* @param device the device to use for sending
*/
void midi_send_tick(MidiDevice * device);
/**
* @brief Send a start message via the given device.
*
* @param device the device to use for sending
*/
void midi_send_start(MidiDevice * device);
/**
* @brief Send a continue message via the given device.
*
* @param device the device to use for sending
*/
void midi_send_continue(MidiDevice * device);
/**
* @brief Send a stop message via the given device.
*
* @param device the device to use for sending
*/
void midi_send_stop(MidiDevice * device);
/**
* @brief Send an active sense message via the given device.
*
* @param device the device to use for sending
*/
void midi_send_activesense(MidiDevice * device);
/**
* @brief Send a reset message via the given device.
*
* @param device the device to use for sending
*/
void midi_send_reset(MidiDevice * device);
/**
* @brief Send a tc quarter frame message via the given device.
*
* @param device the device to use for sending
* @param time the time of this quarter frame, range 0..16383
*/
void midi_send_tcquarterframe(MidiDevice * device, uint8_t time);
/**
* @brief Send a song position message via the given device.
*
* @param device the device to use for sending
* @param pos the song position
*/
void midi_send_songposition(MidiDevice * device, uint16_t pos);
/**
* @brief Send a song select message via the given device.
*
* @param device the device to use for sending
* @param song the song to select
*/
void midi_send_songselect(MidiDevice * device, uint8_t song);
/**
* @brief Send a tune request message via the given device.
*
* @param device the device to use for sending
*/
void midi_send_tunerequest(MidiDevice * device);
/**
* @brief Send a byte via the given device.
*
* This is a generic method for sending data via the given midi device.
* This would be useful for sending sysex data or messages that are not
* implemented in this API, if there are any. Please contact the author
* if you find some so we can add them.
*
* @param device the device to use for sending
* @param b the byte to send
*/
void midi_send_byte(MidiDevice * device, uint8_t b);
/**
* @brief Send up to 3 bytes of data
*
* % 4 is applied to count so that you can use this to pass sysex through
*
* @param device the device to use for sending
* @param count the count of bytes to send, %4 is applied
* @param byte0 the first byte
* @param byte1 the second byte, ignored if cnt % 4 != 2
* @param byte2 the third byte, ignored if cnt % 4 != 3
*/
void midi_send_data(MidiDevice * device, uint16_t count, uint8_t byte0, uint8_t byte1, uint8_t byte2);
/**
* @brief Send an array of formatted midi data.
*
* Can be used for sysex.
*
* @param device the device to use for sending
* @param count the count of bytes to send
* @param array the array of bytes
*/
void midi_send_array(MidiDevice * device, uint16_t count, uint8_t * array);
/**@}*/
/**
* @defgroup input_callback_reg Input callback registration functions
*
* @brief These are the functions you use to register your input callbacks.
*
* The functions are called when the appropriate midi message is matched on the
* associated device's input.
*
* @{
*/
//three byte funcs
/**
* @brief Register a control change message (cc) callback.
*
* @param device the device associate with
* @param func the callback function to register
*/
void midi_register_cc_callback(MidiDevice * device, midi_three_byte_func_t func);
/**
* @brief Register a note on callback.
*
* @param device the device associate with
* @param func the callback function to register
*/
void midi_register_noteon_callback(MidiDevice * device, midi_three_byte_func_t func);
/**
* @brief Register a note off callback.
*
* @param device the device associate with
* @param func the callback function to register
*/
void midi_register_noteoff_callback(MidiDevice * device, midi_three_byte_func_t func);
/**
* @brief Register an after touch callback.
*
* @param device the device associate with
* @param func the callback function to register
*/
void midi_register_aftertouch_callback(MidiDevice * device, midi_three_byte_func_t func);
/**
* @brief Register a pitch bend callback.
*
* @param device the device associate with
* @param func the callback function to register
*/
void midi_register_pitchbend_callback(MidiDevice * device, midi_three_byte_func_t func);
/**
* @brief Register a song position callback.
*
* @param device the device associate with
* @param func the callback function to register
*/
void midi_register_songposition_callback(MidiDevice * device, midi_three_byte_func_t func);
//two byte funcs
/**
* @brief Register a program change callback.
*
* @param device the device associate with
* @param func the callback function to register
*/
void midi_register_progchange_callback(MidiDevice * device, midi_two_byte_func_t func);
/**
* @brief Register a channel pressure callback.
*
* @param device the device associate with
* @param func the callback function to register
*/
void midi_register_chanpressure_callback(MidiDevice * device, midi_two_byte_func_t func);
/**
* @brief Register a song select callback.
*
* @param device the device associate with
* @param func the callback function to register
*/
void midi_register_songselect_callback(MidiDevice * device, midi_two_byte_func_t func);
/**
* @brief Register a tc quarter frame callback.
*
* @param device the device associate with
* @param func the callback function to register
*/
void midi_register_tc_quarterframe_callback(MidiDevice * device, midi_two_byte_func_t func);
//one byte funcs
/**
* @brief Register a realtime callback.
*
* The callback will be called for all of the real time message types.
*
* @param device the device associate with
* @param func the callback function to register
*/
void midi_register_realtime_callback(MidiDevice * device, midi_one_byte_func_t func);
/**
* @brief Register a tune request callback.
*
* @param device the device associate with
* @param func the callback function to register
*/
void midi_register_tunerequest_callback(MidiDevice * device, midi_one_byte_func_t func);
/**
* @brief Register a sysex callback.
*
* @param device the device associate with
* @param func the callback function to register
*/
void midi_register_sysex_callback(MidiDevice * device, midi_sysex_func_t func);
/**
* @brief Register fall through callback.
*
* This is only called if a more specific callback is not matched and called.
* For instance, if you don't register a note on callback but you get a note on message
* the fall through callback will be called, if it is registered.
*
* @param device the device associate with
* @param func the callback function to register
*/
void midi_register_fallthrough_callback(MidiDevice * device, midi_var_byte_func_t func);
/**
* @brief Register a catch all callback.
*
* If registered, the catch all callback is called for every message that is
* matched, even if a more specific or the fallthrough callback is registered.
*
* @param device the device associate with
* @param func the callback function to register
*/
void midi_register_catchall_callback(MidiDevice * device, midi_var_byte_func_t func);
/**@}*/
/**
* @defgroup midi_util Device independent utility functions.
* @{
*/
/**
* \enum midi_packet_length_t
*
* An enumeration of the possible packet length values.
*/
typedef enum {
UNDEFINED = 0,
ONE = 1,
TWO = 2,
THREE = 3} midi_packet_length_t;
/**
* @brief Test to see if the byte given is a status byte
* @param theByte the byte to test
* @return true if the byte given is a midi status byte
*/
bool midi_is_statusbyte(uint8_t theByte);
/**
* @brief Test to see if the byte given is a realtime message
* @param theByte the byte to test
* @return true if it is a realtime message, false otherwise
*/
bool midi_is_realtime(uint8_t theByte);
/**
* @brief Find the length of the packet associated with the status byte given
* @param status the status byte
* @return the length of the packet, will return UNDEFINED if the byte is not
* a status byte or if it is a sysex status byte
*/
midi_packet_length_t midi_packet_length(uint8_t status);
/**@}*/
/**
* @defgroup defines Midi status and miscellaneous utility #defines
*
* @{
*/
#define SYSEX_BEGIN 0xF0
#define SYSEX_END 0xF7
//if you and this with a byte and you get anything non-zero
//it is a status message
#define MIDI_STATUSMASK 0x80
//if you and this with a status message that contains channel info,
//you'll get the channel
#define MIDI_CHANMASK 0x0F
#define MIDI_CC 0xB0
#define MIDI_NOTEON 0x90
#define MIDI_NOTEOFF 0x80
#define MIDI_AFTERTOUCH 0xA0
#define MIDI_PITCHBEND 0xE0
#define MIDI_PROGCHANGE 0xC0
#define MIDI_CHANPRESSURE 0xD0
//midi realtime
#define MIDI_CLOCK 0xF8
#define MIDI_TICK 0xF9
#define MIDI_START 0xFA
#define MIDI_CONTINUE 0xFB
#define MIDI_STOP 0xFC
#define MIDI_ACTIVESENSE 0xFE
#define MIDI_RESET 0xFF
#define MIDI_TC_QUARTERFRAME 0xF1
#define MIDI_SONGPOSITION 0xF2
#define MIDI_SONGSELECT 0xF3
#define MIDI_TUNEREQUEST 0xF6
//This ID is for educational or development use only
#define SYSEX_EDUMANUFID 0x7D
/**@}*/
#ifdef __cplusplus
}
#endif
#endif

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protocol/lufa/midi/midi_device.c Executable file
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//midi for embedded chips,
//Copyright 2010 Alex Norman
//
//This file is part of avr-midi.
//
//avr-midi 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
//(at your option) any later version.
//
//avr-midi 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 avr-midi. If not, see <http://www.gnu.org/licenses/>.
#include "midi_device.h"
#include "midi.h"
#ifndef NULL
#define NULL 0
#endif
//forward declarations, internally used to call the callbacks
void midi_input_callbacks(MidiDevice * device, uint16_t cnt, uint8_t byte0, uint8_t byte1, uint8_t byte2);
void midi_process_byte(MidiDevice * device, uint8_t input);
void midi_device_init(MidiDevice * device){
device->input_state = IDLE;
device->input_count = 0;
bytequeue_init(&device->input_queue, device->input_queue_data, MIDI_INPUT_QUEUE_LENGTH);
//three byte funcs
device->input_cc_callback = NULL;
device->input_noteon_callback = NULL;
device->input_noteoff_callback = NULL;
device->input_aftertouch_callback = NULL;
device->input_pitchbend_callback = NULL;
device->input_songposition_callback = NULL;
//two byte funcs
device->input_progchange_callback = NULL;
device->input_chanpressure_callback = NULL;
device->input_songselect_callback = NULL;
device->input_tc_quarterframe_callback = NULL;
//one byte funcs
device->input_realtime_callback = NULL;
device->input_tunerequest_callback = NULL;
//var byte functions
device->input_sysex_callback = NULL;
device->input_fallthrough_callback = NULL;
device->input_catchall_callback = NULL;
device->pre_input_process_callback = NULL;
}
void midi_device_input(MidiDevice * device, uint8_t cnt, uint8_t * input) {
uint8_t i;
for (i = 0; i < cnt; i++)
bytequeue_enqueue(&device->input_queue, input[i]);
}
void midi_device_set_send_func(MidiDevice * device, midi_var_byte_func_t send_func){
device->send_func = send_func;
}
void midi_device_set_pre_input_process_func(MidiDevice * device, midi_no_byte_func_t pre_process_func){
device->pre_input_process_callback = pre_process_func;
}
void midi_device_process(MidiDevice * device) {
//call the pre_input_process_callback if there is one
if(device->pre_input_process_callback)
device->pre_input_process_callback(device);
//pull stuff off the queue and process
byteQueueIndex_t len = bytequeue_length(&device->input_queue);
uint16_t i;
//TODO limit number of bytes processed?
for(i = 0; i < len; i++) {
uint8_t val = bytequeue_get(&device->input_queue, 0);
midi_process_byte(device, val);
bytequeue_remove(&device->input_queue, 1);
}
}
void midi_process_byte(MidiDevice * device, uint8_t input) {
if (midi_is_realtime(input)) {
//call callback, store and restore state
input_state_t state = device->input_state;
device->input_state = ONE_BYTE_MESSAGE;
midi_input_callbacks(device, 1, input, 0, 0);
device->input_state = state;
} else if (midi_is_statusbyte(input)) {
//store the byte
if (device->input_state != SYSEX_MESSAGE) {
device->input_buffer[0] = input;
device->input_count = 1;
}
switch (midi_packet_length(input)) {
case ONE:
device->input_state = ONE_BYTE_MESSAGE;;
midi_input_callbacks(device, 1, input, 0, 0);
device->input_state = IDLE;
break;
case TWO:
device->input_state = TWO_BYTE_MESSAGE;
break;
case THREE:
device->input_state = THREE_BYTE_MESSAGE;
break;
case UNDEFINED:
switch(input) {
case SYSEX_BEGIN:
device->input_state = SYSEX_MESSAGE;
device->input_buffer[0] = input;
device->input_count = 1;
break;
case SYSEX_END:
//send what is left in the input buffer, set idle
device->input_buffer[device->input_count % 3] = input;
device->input_count += 1;
//call the callback
midi_input_callbacks(device, device->input_count,
device->input_buffer[0], device->input_buffer[1], device->input_buffer[2]);
device->input_state = IDLE;
break;
default:
device->input_state = IDLE;
device->input_count = 0;
}
break;
default:
device->input_state = IDLE;
device->input_count = 0;
break;
}
} else {
if (device->input_state != IDLE) {
//store the byte
device->input_buffer[device->input_count % 3] = input;
//increment count
uint16_t prev = device->input_count;
device->input_count += 1;
switch(prev % 3) {
case 2:
//call callback
midi_input_callbacks(device, device->input_count,
device->input_buffer[0], device->input_buffer[1], device->input_buffer[2]);
if (device->input_state != SYSEX_MESSAGE) {
//set to 1, keeping status byte, allowing for running status
device->input_count = 1;
}
break;
case 1:
if (device->input_state == TWO_BYTE_MESSAGE) {
//call callback
midi_input_callbacks(device, device->input_count,
device->input_buffer[0], device->input_buffer[1], 0);
if (device->input_state != SYSEX_MESSAGE) {
//set to 1, keeping status byte, allowing for running status
device->input_count = 1;
}
}
break;
case 0:
default:
//one byte messages are dealt with directly
break;
}
}
}
}
void midi_input_callbacks(MidiDevice * device, uint16_t cnt, uint8_t byte0, uint8_t byte1, uint8_t byte2) {
//did we end up calling a callback?
bool called = false;
if (device->input_state == SYSEX_MESSAGE) {
if (device->input_sysex_callback) {
const uint16_t start = ((cnt - 1) / 3) * 3;
const uint8_t length = (cnt - start);
uint8_t data[3];
data[0] = byte0;
data[1] = byte1;
data[2] = byte2;
device->input_sysex_callback(device, start, length, data);
called = true;
}
} else {
switch (cnt) {
case 3:
{
midi_three_byte_func_t func = NULL;
switch (byte0 & 0xF0) {
case MIDI_CC:
func = device->input_cc_callback;
break;
case MIDI_NOTEON:
func = device->input_noteon_callback;
break;
case MIDI_NOTEOFF:
func = device->input_noteoff_callback;
break;
case MIDI_AFTERTOUCH:
func = device->input_aftertouch_callback;
break;
case MIDI_PITCHBEND:
func = device->input_pitchbend_callback;
break;
case 0xF0:
if (byte0 == MIDI_SONGPOSITION)
func = device->input_songposition_callback;
break;
default:
break;
}
if(func) {
//mask off the channel for non song position functions
if (byte0 == MIDI_SONGPOSITION)
func(device, byte0, byte1, byte2);
else
func(device, byte0 & 0x0F, byte1, byte2);
called = true;
}
}
break;
case 2:
{
midi_two_byte_func_t func = NULL;
switch (byte0 & 0xF0) {
case MIDI_PROGCHANGE:
func = device->input_progchange_callback;
break;
case MIDI_CHANPRESSURE:
func = device->input_chanpressure_callback;
break;
case 0xF0:
if (byte0 == MIDI_SONGSELECT)
func = device->input_songselect_callback;
else if (byte0 == MIDI_TC_QUARTERFRAME)
func = device->input_tc_quarterframe_callback;
break;
default:
break;
}
if(func) {
//mask off the channel
if (byte0 == MIDI_SONGSELECT || byte0 == MIDI_TC_QUARTERFRAME)
func(device, byte0, byte1);
else
func(device, byte0 & 0x0F, byte1);
called = true;
}
}
break;
case 1:
{
midi_one_byte_func_t func = NULL;
if (midi_is_realtime(byte0))
func = device->input_realtime_callback;
else if (byte0 == MIDI_TUNEREQUEST)
func = device->input_tunerequest_callback;
if (func) {
func(device, byte0);
called = true;
}
}
break;
default:
//just in case
if (cnt > 3)
cnt = 0;
break;
}
}
//if there is fallthrough default callback and we haven't called a more specific one,
//call the fallthrough
if (!called && device->input_fallthrough_callback)
device->input_fallthrough_callback(device, cnt, byte0, byte1, byte2);
//always call the catch all if it exists
if (device->input_catchall_callback)
device->input_catchall_callback(device, cnt, byte0, byte1, byte2);
}

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protocol/lufa/midi/midi_device.h Executable file
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//midi for embedded chips,
//Copyright 2010 Alex Norman
//
//This file is part of avr-midi.
//
//avr-midi 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
//(at your option) any later version.
//
//avr-midi 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 avr-midi. If not, see <http://www.gnu.org/licenses/>.
/**
* @file
* @brief Device implementation functions
*/
#ifndef MIDI_DEVICE_H
#define MIDI_DEVICE_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup midi_device Functions used when implementing your own midi device.
*
* You use the functions when you are implementing your own midi device.
*
* You set a send function to actually send bytes via your device, this method
* is called when you call a send function with this device, for instance
* midi_send_cc
*
* You use the midi_device_input to process input data from the device and pass
* it through the device's associated callbacks.
*
* You use the midi_device_set_pre_input_process_func if you want to have a
* function called at the beginning of the device's process function, generally
* to poll for input and pass that into midi_device_input
*
* @{
*/
#include "midi_function_types.h"
#include "bytequeue/bytequeue.h"
#define MIDI_INPUT_QUEUE_LENGTH 192
typedef enum {
IDLE,
ONE_BYTE_MESSAGE = 1,
TWO_BYTE_MESSAGE = 2,
THREE_BYTE_MESSAGE = 3,
SYSEX_MESSAGE} input_state_t;
typedef void (* midi_no_byte_func_t)(MidiDevice * device);
/**
* \struct _midi_device
*
* @brief This structure represents the input and output functions and
* processing data for a midi device.
*
* A device can represent an actual physical device [serial port, usb port] or
* something virtual.
* You should not need to modify this structure directly.
*/
struct _midi_device {
//output send function
midi_var_byte_func_t send_func;
//********input callbacks
//three byte funcs
midi_three_byte_func_t input_cc_callback;
midi_three_byte_func_t input_noteon_callback;
midi_three_byte_func_t input_noteoff_callback;
midi_three_byte_func_t input_aftertouch_callback;
midi_three_byte_func_t input_pitchbend_callback;
midi_three_byte_func_t input_songposition_callback;
//two byte funcs
midi_two_byte_func_t input_progchange_callback;
midi_two_byte_func_t input_chanpressure_callback;
midi_two_byte_func_t input_songselect_callback;
midi_two_byte_func_t input_tc_quarterframe_callback;
//one byte funcs
midi_one_byte_func_t input_realtime_callback;
midi_one_byte_func_t input_tunerequest_callback;
//sysex
midi_sysex_func_t input_sysex_callback;
//only called if more specific callback is not matched
midi_var_byte_func_t input_fallthrough_callback;
//called if registered, independent of other callbacks
midi_var_byte_func_t input_catchall_callback;
//pre input processing function
midi_no_byte_func_t pre_input_process_callback;
//for internal input processing
uint8_t input_buffer[3];
input_state_t input_state;
uint16_t input_count;
//for queueing data between the input and the processing functions
uint8_t input_queue_data[MIDI_INPUT_QUEUE_LENGTH];
byteQueue_t input_queue;
};
/**
* @brief Process input bytes. This function parses bytes and calls the
* appropriate callbacks associated with the given device. You use this
* function if you are creating a custom device and you want to have midi
* input.
*
* @param device the midi device to associate the input with
* @param cnt the number of bytes you are processing
* @param input the bytes to process
*/
void midi_device_input(MidiDevice * device, uint8_t cnt, uint8_t * input);
/**
* @brief Set the callback function that will be used for sending output
* data bytes. This is only used if you're creating a custom device.
* You'll most likely want the callback function to disable interrupts so
* that you can call the various midi send functions without worrying about
* locking.
*
* \param device the midi device to associate this callback with
* \param send_func the callback function that will do the sending
*/
void midi_device_set_send_func(MidiDevice * device, midi_var_byte_func_t send_func);
/**
* @brief Set a callback which is called at the beginning of the
* midi_device_process call. This can be used to poll for input
* data and send the data through the midi_device_input function.
* You'll probably only use this if you're creating a custom device.
*
* \param device the midi device to associate this callback with
* \param midi_no_byte_func_t the actual callback function
*/
void midi_device_set_pre_input_process_func(MidiDevice * device, midi_no_byte_func_t pre_process_func);
/**@}*/
#ifdef __cplusplus
}
#endif
#endif

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protocol/lufa/midi/midi_function_types.h Executable file
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//midi for embedded chips,
//Copyright 2010 Alex Norman
//
//This file is part of avr-midi.
//
//avr-midi 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
//(at your option) any later version.
//
//avr-midi 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 avr-midi. If not, see <http://www.gnu.org/licenses/>.
/**
* @file
* @brief Function signature definitions
*/
#ifndef MIDI_FUNCTION_TYPES_H
#define MIDI_FUNCTION_TYPES_H
#ifdef __cplusplus
extern "C" {
#endif
#include <inttypes.h>
#include <stdbool.h>
//forward declaration
typedef struct _midi_device MidiDevice;
typedef void (* midi_one_byte_func_t)(MidiDevice * device, uint8_t byte);
typedef void (* midi_two_byte_func_t)(MidiDevice * device, uint8_t byte0, uint8_t byte1);
typedef void (* midi_three_byte_func_t)(MidiDevice * device, uint8_t byte0, uint8_t byte1, uint8_t byte2);
//all bytes after count bytes should be ignored
typedef void (* midi_var_byte_func_t)(MidiDevice * device, uint16_t count, uint8_t byte0, uint8_t byte1, uint8_t byte2);
//the start byte tells you how far into the sysex message you are, the data_length tells you how many bytes data is
typedef void (* midi_sysex_func_t)(MidiDevice * device, uint16_t start_byte, uint8_t data_length, uint8_t *data);
#ifdef __cplusplus
}
#endif
#endif

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protocol/lufa/midi/sysex_tools.c Executable file
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//midi for embedded chips,
//Copyright 2010 Alex Norman
//
//This file is part of avr-midi.
//
//avr-midi 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
//(at your option) any later version.
//
//avr-midi 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 avr-midi. If not, see <http://www.gnu.org/licenses/>.
#include "sysex_tools.h"
uint16_t sysex_encoded_length(uint16_t decoded_length){
uint8_t remainder = decoded_length % 7;
if (remainder)
return (decoded_length / 7) * 8 + remainder + 1;
else
return (decoded_length / 7) * 8;
}
uint16_t sysex_decoded_length(uint16_t encoded_length){
uint8_t remainder = encoded_length % 8;
if (remainder)
return (encoded_length / 8) * 7 + remainder - 1;
else
return (encoded_length / 8) * 7;
}
uint16_t sysex_encode(uint8_t *encoded, const uint8_t *source, const uint16_t length){
uint16_t encoded_full = length / 7; //number of full 8 byte sections from 7 bytes of input
uint16_t i,j;
//fill out the fully encoded sections
for(i = 0; i < encoded_full; i++) {
uint16_t encoded_msb_idx = i * 8;
uint16_t input_start_idx = i * 7;
encoded[encoded_msb_idx] = 0;
for(j = 0; j < 7; j++){
uint8_t current = source[input_start_idx + j];
encoded[encoded_msb_idx] |= (0x80 & current) >> (1 + j);
encoded[encoded_msb_idx + 1 + j] = 0x7F & current;
}
}
//fill out the rest if there is any more
uint8_t remainder = length % 7;
if (remainder) {
uint16_t encoded_msb_idx = encoded_full * 8;
uint16_t input_start_idx = encoded_full * 7;
encoded[encoded_msb_idx] = 0;
for(j = 0; j < remainder; j++){
uint8_t current = source[input_start_idx + j];
encoded[encoded_msb_idx] |= (0x80 & current) >> (1 + j);
encoded[encoded_msb_idx + 1 + j] = 0x7F & current;
}
return encoded_msb_idx + remainder + 1;
} else {
return encoded_full * 8;
}
}
uint16_t sysex_decode(uint8_t *decoded, const uint8_t *source, const uint16_t length){
uint16_t decoded_full = length / 8;
uint16_t i,j;
if (length < 2)
return 0;
//fill out the fully encoded sections
for(i = 0; i < decoded_full; i++) {
uint16_t encoded_msb_idx = i * 8;
uint16_t output_start_index = i * 7;
for(j = 0; j < 7; j++){
decoded[output_start_index + j] = 0x7F & source[encoded_msb_idx + j + 1];
decoded[output_start_index + j] |= (0x80 & (source[encoded_msb_idx] << (1 + j)));
}
}
uint8_t remainder = length % 8;
if (remainder) {
uint16_t encoded_msb_idx = decoded_full * 8;
uint16_t output_start_index = decoded_full * 7;
for(j = 0; j < (remainder - 1); j++) {
decoded[output_start_index + j] = 0x7F & source[encoded_msb_idx + j + 1];
decoded[output_start_index + j] |= (0x80 & (source[encoded_msb_idx] << (1 + j)));
}
return decoded_full * 7 + remainder - 1;
} else {
return decoded_full * 7;
}
}

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protocol/lufa/midi/sysex_tools.h Executable file
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//midi for embedded chips,
//Copyright 2010 Alex Norman
//
//This file is part of avr-midi.
//
//avr-midi 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
//(at your option) any later version.
//
//avr-midi 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 avr-midi. If not, see <http://www.gnu.org/licenses/>.
#ifndef SYSEX_TOOLS_H
#define SYSEX_TOOLS_H
#ifdef __cplusplus
extern "C" {
#endif
#include <inttypes.h>
/**
* @file
* @brief Sysex utility functions
*
* These functions are for converting data to and from a "midi-safe" format,
* which can be use to send data with sysex messages. Sysex messages may only
* contain data where the to bit is not set.
*
* An "encoded" midi message is one that contains all of the data from its
* original state, but does not have any of the top bits set.
*
* Every 7 bytes of decoded data is converted into 8 bytes of encoded data and
* visa-versa. If you'd like to operate on small segments, make sure that you
* encode in 7 byte increments and decode in 8 byte increments.
*
*/
/** @defgroup sysex_tools Sysex utility functions
* @{
*/
/**
* @brief Compute the length of a message after it is encoded.
*
* @param decoded_length The length, in bytes, of the message to encode.
*
* @return The length, in bytes, of the message after encodeing.
*/
uint16_t sysex_encoded_length(uint16_t decoded_length);
/**
* @brief Compute the length of a message after it is decoded.
*
* @param encoded_length The length, in bytes, of the encoded message.
*
* @return The length, in bytes, of the message after it is decoded.
*/
uint16_t sysex_decoded_length(uint16_t encoded_length);
/**
* @brief Encode data so that it can be transmitted safely in a sysex message.
*
* @param encoded The output data buffer, must be at least sysex_encoded_length(length) bytes long.
* @param source The input buffer of data to be encoded.
* @param length The number of bytes from the input buffer to encode.
*
* @return number of bytes encoded.
*/
uint16_t sysex_encode(uint8_t *encoded, const uint8_t *source, uint16_t length);
/**
* @brief Decode encoded data.
*
* @param decoded The output data buffer, must be at least sysex_decoded_length(length) bytes long.
* @param source The input buffer of data to be decoded.
* @param length The number of bytes from the input buffer to decode.
*
* @return number of bytes decoded.
*/
uint16_t sysex_decode(uint8_t *decoded, const uint8_t *source, uint16_t length);
/**@}*/
#ifdef __cplusplus
}
#endif
#endif