diff options
Diffstat (limited to 'usb-cdc-midi')
-rw-r--r-- | usb-cdc-midi/Makefile | 45 | ||||
-rw-r--r-- | usb-cdc-midi/usb-cdc-midi.c | 212 |
2 files changed, 257 insertions, 0 deletions
diff --git a/usb-cdc-midi/Makefile b/usb-cdc-midi/Makefile new file mode 100644 index 0000000..c33bd67 --- /dev/null +++ b/usb-cdc-midi/Makefile @@ -0,0 +1,45 @@ +## +## spreadspace avr utils +## +## +## Copyright (C) 2013-2015 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/>. +## + +NAME := usb-cdc-midi +BOARD_TYPE := teensy2 +OBJ := $(NAME).o +LIBS := util led lufa-descriptor-usbserialmidi +EXTERNAL_LIBS := lufa +SPREADAVR_PATH := .. + +LUFA_PATH := $(SPREADAVR_PATH)/contrib/lufa-LUFA-140928 +LUFA_OPTS = -D USB_DEVICE_ONLY +LUFA_OPTS += -D DEVICE_STATE_AS_GPIOR=0 +LUFA_OPTS += -D ORDERED_EP_CONFIG +LUFA_OPTS += -D FIXED_CONTROL_ENDPOINT_SIZE=8 +LUFA_OPTS += -D FIXED_NUM_CONFIGURATIONS=1 +LUFA_OPTS += -D USE_FLASH_DESCRIPTORS +LUFA_OPTS += -D USE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)" +LUFA_OPTS += -D INTERRUPT_CONTROL_ENDPOINT + +LUFA_OPTS += -D USB_MANUFACTURER="L\"equinox\"" +LUFA_OPTS += -D USB_PRODUCT="L\"spreadspace usb-cdc & midi example\"" + +LUFA_COMPONENTS := USB USBCLASS SERIAL + +include $(SPREADAVR_PATH)/include.mk diff --git a/usb-cdc-midi/usb-cdc-midi.c b/usb-cdc-midi/usb-cdc-midi.c new file mode 100644 index 0000000..8658df8 --- /dev/null +++ b/usb-cdc-midi/usb-cdc-midi.c @@ -0,0 +1,212 @@ +/* + * spreadspace avr utils + * + * + * Copyright (C) 2013-2015 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-usbserialmidi.h" + +USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface = + { + .Config = + { + .ControlInterfaceNumber = INTERFACE_ID_CDC_CCI, + .DataINEndpoint = + { + .Address = CDC_TX_EPADDR, + .Size = CDC_TXRX_EPSIZE, + .Banks = 1, + }, + .DataOUTEndpoint = + { + .Address = CDC_RX_EPADDR, + .Size = CDC_TXRX_EPSIZE, + .Banks = 1, + }, + .NotificationEndpoint = + { + .Address = CDC_NOTIFICATION_EPADDR, + .Size = CDC_NOTIFICATION_EPSIZE, + .Banks = 1, + }, + }, + }; + + +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, + }, + }, + }; + + +void EVENT_USB_Device_ConfigurationChanged(void) +{ + CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface); + MIDI_Device_ConfigureEndpoints(&Keyboard_MIDI_Interface); +} + +void EVENT_USB_Device_ControlRequest(void) +{ + CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface); + MIDI_Device_ProcessControlRequest(&Keyboard_MIDI_Interface); +} +/* end LUFA CDC-ACM MIDI specific definitions*/ + +#include "util.h" +#include "led.h" + +static FILE usb_stream; + +#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); +} + +void handle_cmd(uint8_t cmd) +{ + switch(cmd) { + case '0': led_off(); break; + case '1': led_on(); break; + case 't': led_toggle(); break; + case 'r': reset2bootloader(); break; + default: printf("error\r\n"); return; + } + printf("ok\r\n"); +} + +int main(void) +{ + MCUSR &= ~(1 << WDRF); + wdt_disable(); + + cpu_init(); + led_init(); + key_init(); + USB_Init(); + sei(); + + CDC_Device_CreateStream(&VirtualSerial_CDC_Interface,&usb_stream); + stdin = stdout = stderr = &usb_stream; + + 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(;;) { + int16_t BytesReceived = CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface); + while(BytesReceived > 0) { + int ReceivedByte = fgetc(stdin); + if(ReceivedByte != EOF) { + handle_cmd(ReceivedByte); + } + BytesReceived--; + } + + MIDI_EventPacket_t ReceivedMIDIEvent; + while(MIDI_Device_ReceiveEventPacket(&Keyboard_MIDI_Interface, &ReceivedMIDIEvent)) { + led_on(); + printf("MIDI: %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); + + printf("Key %s\r\n", state ? "released" : "pressed"); + + last_state = state; + lp_cnt = 0; + } + + +#if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR) + if(USB_DeviceState == DEVICE_STATE_Unattached && USB_VBUS_GetStatus()) { + USB_Disable(); + USB_Init(); + } +#endif + + CDC_Device_USBTask(&VirtualSerial_CDC_Interface); + MIDI_Device_USBTask(&Keyboard_MIDI_Interface); + USB_USBTask(); + } +} |