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Diffstat (limited to 'firmware/dolmetsch-ctl.c')
| -rw-r--r-- | firmware/dolmetsch-ctl.c | 166 |
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(); + } +} |