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@ -52,6 +52,7 @@
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#include "descriptor.h"
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#include "lufa.h"
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uint8_t keyboard_idle = 0;
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uint8_t keyboard_protocol = 1;
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static uint8_t keyboard_led_stats = 0;
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@ -65,14 +66,51 @@ static void send_keyboard(report_keyboard_t *report);
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static void send_mouse(report_mouse_t *report);
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static void send_system(uint16_t data);
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static void send_consumer(uint16_t data);
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void usb_send_func(MidiDevice * device, uint16_t cnt, uint8_t byte0, uint8_t byte1, uint8_t byte2);
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void usb_get_midi(MidiDevice * device);
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void midi_usb_init(MidiDevice * device);
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host_driver_t lufa_driver = {
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keyboard_leds,
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send_keyboard,
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send_mouse,
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send_system,
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send_consumer
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send_consumer,
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usb_send_func,
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usb_get_midi,
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midi_usb_init
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};
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void SetupHardware(void);
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USB_ClassInfo_MIDI_Device_t USB_MIDI_Interface =
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{
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.Config =
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{
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.StreamingInterfaceNumber = 1,
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.DataINEndpoint =
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{
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.Address = (ENDPOINT_DIR_IN | MIDI_STREAM_IN_EPNUM),
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.Size = MIDI_STREAM_EPSIZE,
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.Banks = 1,
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},
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.DataOUTEndpoint =
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{
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.Address = (ENDPOINT_DIR_OUT | MIDI_STREAM_OUT_EPNUM),
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.Size = MIDI_STREAM_EPSIZE,
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.Banks = 1,
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},
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},
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};
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#define SYSEX_START_OR_CONT 0x40
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#define SYSEX_ENDS_IN_1 0x50
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#define SYSEX_ENDS_IN_2 0x60
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#define SYSEX_ENDS_IN_3 0x70
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#define SYS_COMMON_1 0x50
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#define SYS_COMMON_2 0x20
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#define SYS_COMMON_3 0x30
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/*******************************************************************************
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* Console
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@ -240,8 +278,13 @@ void EVENT_USB_Device_ConfigurationChanged(void)
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ConfigSuccess &= ENDPOINT_CONFIG(NKRO_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
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NKRO_EPSIZE, ENDPOINT_BANK_SINGLE);
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#endif
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ConfigSuccess &= MIDI_Device_ConfigureEndpoints(&USB_MIDI_Interface);
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}
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/*
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Appendix G: HID Request Support Requirements
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@ -263,6 +306,8 @@ void EVENT_USB_Device_ControlRequest(void)
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uint8_t* ReportData = NULL;
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uint8_t ReportSize = 0;
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MIDI_Device_ProcessControlRequest(&USB_MIDI_Interface);
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/* Handle HID Class specific requests */
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switch (USB_ControlRequest.bRequest)
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{
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@ -541,10 +586,109 @@ int8_t sendchar(uint8_t c)
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#endif
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void usb_send_func(MidiDevice * device, uint16_t cnt, uint8_t byte0, uint8_t byte1, uint8_t byte2) {
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MIDI_EventPacket_t event;
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event.Data1 = byte0;
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event.Data2 = byte1;
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event.Data3 = byte2;
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//if the length is undefined we assume it is a SYSEX message
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if (midi_packet_length(byte0) == UNDEFINED) {
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switch(cnt) {
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case 3:
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if (byte2 == SYSEX_END)
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event.Event = MIDI_EVENT(0, SYSEX_ENDS_IN_3);
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else
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event.Event = MIDI_EVENT(0, SYSEX_START_OR_CONT);
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break;
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case 2:
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if (byte1 == SYSEX_END)
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event.Event = MIDI_EVENT(0, SYSEX_ENDS_IN_2);
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else
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event.Event = MIDI_EVENT(0, SYSEX_START_OR_CONT);
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break;
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case 1:
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if (byte0 == SYSEX_END)
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event.Event = MIDI_EVENT(0, SYSEX_ENDS_IN_1);
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else
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event.Event = MIDI_EVENT(0, SYSEX_START_OR_CONT);
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break;
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default:
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return; //invalid cnt
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}
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} else {
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//deal with 'system common' messages
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//TODO are there any more?
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switch(byte0 & 0xF0){
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case MIDI_SONGPOSITION:
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event.Event = MIDI_EVENT(0, SYS_COMMON_3);
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break;
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case MIDI_SONGSELECT:
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case MIDI_TC_QUARTERFRAME:
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event.Event = MIDI_EVENT(0, SYS_COMMON_2);
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break;
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default:
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event.Event = MIDI_EVENT(0, byte0);
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break;
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}
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}
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MIDI_Device_SendEventPacket(&USB_MIDI_Interface, &event);
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MIDI_Device_Flush(&USB_MIDI_Interface);
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MIDI_Device_USBTask(&USB_MIDI_Interface);
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USB_USBTask();
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}
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void usb_get_midi(MidiDevice * device) {
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MIDI_EventPacket_t event;
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while (MIDI_Device_ReceiveEventPacket(&USB_MIDI_Interface, &event)) {
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midi_packet_length_t length = midi_packet_length(event.Data1);
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uint8_t input[3];
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input[0] = event.Data1;
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input[1] = event.Data2;
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input[2] = event.Data3;
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if (length == UNDEFINED) {
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//sysex
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if (event.Event == MIDI_EVENT(0, SYSEX_START_OR_CONT) || event.Event == MIDI_EVENT(0, SYSEX_ENDS_IN_3)) {
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length = 3;
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} else if (event.Event == MIDI_EVENT(0, SYSEX_ENDS_IN_2)) {
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length = 2;
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} else if(event.Event == MIDI_EVENT(0, SYSEX_ENDS_IN_1)) {
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length = 1;
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} else {
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//XXX what to do?
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}
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}
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//pass the data to the device input function
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if (length != UNDEFINED)
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midi_device_input(device, length, input);
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}
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MIDI_Device_USBTask(&USB_MIDI_Interface);
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USB_USBTask();
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}
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void midi_usb_init(MidiDevice * device){
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midi_device_init(device);
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midi_device_set_send_func(device, usb_send_func);
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midi_device_set_pre_input_process_func(device, usb_get_midi);
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SetupHardware();
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sei();
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}
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/*******************************************************************************
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* main
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******************************************************************************/
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static void SetupHardware(void)
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void SetupHardware(void)
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{
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/* Disable watchdog if enabled by bootloader/fuses */
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MCUSR &= ~(1 << WDRF);
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@ -563,12 +707,34 @@ static void SetupHardware(void)
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print_set_sendchar(sendchar);
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}
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void fallthrough_callback(MidiDevice * device,
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uint16_t cnt, uint8_t byte0, uint8_t byte1, uint8_t byte2);
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void cc_callback(MidiDevice * device,
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uint8_t chan, uint8_t num, uint8_t val);
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void sysex_callback(MidiDevice * device,
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uint16_t start, uint8_t length, uint8_t * data);
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int main(void) __attribute__ ((weak));
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int main(void)
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{
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//setup the device
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midi_device_init(&midi_device);
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midi_device_set_send_func(&midi_device, usb_send_func);
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midi_device_set_pre_input_process_func(&midi_device, usb_get_midi);
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SetupHardware();
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sei();
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midi_register_fallthrough_callback(&midi_device, fallthrough_callback);
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midi_register_cc_callback(&midi_device, cc_callback);
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midi_register_sysex_callback(&midi_device, sysex_callback);
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midi_send_cc(&midi_device, 0, 1, 2);
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midi_send_cc(&midi_device, 15, 1, 0);
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midi_send_noteon(&midi_device, 0, 64, 127);
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midi_send_noteoff(&midi_device, 0, 64, 127);
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/* wait for USB startup & debug output */
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while (USB_DeviceState != DEVICE_STATE_Configured) {
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#if defined(INTERRUPT_CONTROL_ENDPOINT)
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@ -598,8 +764,29 @@ int main(void)
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keyboard_task();
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midi_device_process(&midi_device);
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#if !defined(INTERRUPT_CONTROL_ENDPOINT)
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USB_USBTask();
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#endif
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}
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}
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//echo data back
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void fallthrough_callback(MidiDevice * device,
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uint16_t cnt, uint8_t byte0, uint8_t byte1, uint8_t byte2){
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//pass the data back to the device, using the general purpose send data
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//function, any bytes after cnt are ignored
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}
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void cc_callback(MidiDevice * device,
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uint8_t chan, uint8_t num, uint8_t val) {
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//sending it back on the next channel
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midi_send_cc(device, (chan + 1) % 16, num, val);
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}
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void sysex_callback(MidiDevice * device,
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uint16_t start, uint8_t length, uint8_t * data) {
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for (int i = 0; i < length; i++)
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midi_send_cc(device, 15, 0x7F & data[i], 0x7F & (start + i));
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}
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Jack Humbert
9 years ago