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267 lines
7.9 KiB
267 lines
7.9 KiB
8 years ago
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2017.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaims all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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*
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* Main source file for the MIDIHost demo. This file contains the main tasks of
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* the demo and is responsible for the initial application hardware configuration.
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*/
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#include "MIDIHost.h"
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/** Main program entry point. This routine configures the hardware required by the application, then
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* enters a loop to run the application tasks in sequence.
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*/
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int main(void)
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{
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SetupHardware();
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puts_P(PSTR(ESC_FG_CYAN "MIDI Host Demo running.\r\n" ESC_FG_WHITE));
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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GlobalInterruptEnable();
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for (;;)
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{
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MIDIHost_Task();
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USB_USBTask();
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}
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}
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/** Configures the board hardware and chip peripherals for the demo's functionality. */
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void SetupHardware(void)
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{
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#if (ARCH == ARCH_AVR8)
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/* Disable watchdog if enabled by bootloader/fuses */
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MCUSR &= ~(1 << WDRF);
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wdt_disable();
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/* Disable clock division */
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clock_prescale_set(clock_div_1);
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#endif
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/* Hardware Initialization */
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Serial_Init(9600, false);
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LEDs_Init();
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Buttons_Init();
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Joystick_Init();
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USB_Init();
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/* Create a stdio stream for the serial port for stdin and stdout */
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Serial_CreateStream(NULL);
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}
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/** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
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* starts the library USB task to begin the enumeration and USB management process.
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*/
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void EVENT_USB_Host_DeviceAttached(void)
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{
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puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE));
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LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
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}
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/** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
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* stops the library USB task management process.
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*/
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void EVENT_USB_Host_DeviceUnattached(void)
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{
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puts_P(PSTR(ESC_FG_GREEN "\r\nDevice Unattached.\r\n" ESC_FG_WHITE));
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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}
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/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
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* enumerated by the host and is now ready to be used by the application.
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*/
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void EVENT_USB_Host_DeviceEnumerationComplete(void)
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{
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puts_P(PSTR("Getting Config Data.\r\n"));
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uint8_t ErrorCode;
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/* Get and process the configuration descriptor data */
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if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
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{
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if (ErrorCode == ControlError)
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puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
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else
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puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
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printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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return;
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}
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/* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
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if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
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{
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printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
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" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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return;
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}
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puts_P(PSTR("MIDI Device Enumerated.\r\n"));
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LEDs_SetAllLEDs(LEDMASK_USB_READY);
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}
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/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
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void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
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{
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USB_Disable();
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printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
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" -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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for(;;);
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}
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/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
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* enumerating an attached USB device.
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*/
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void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
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const uint8_t SubErrorCode)
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{
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printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
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" -- Error Code %d\r\n"
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" -- Sub Error Code %d\r\n"
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" -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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}
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/** Task to read in note on/off messages from the attached MIDI device and print it to the serial port.
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* When the board joystick or buttons are pressed, note on/off messages are sent to the attached device.
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*/
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void MIDIHost_Task(void)
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{
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if (USB_HostState != HOST_STATE_Configured)
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return;
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Pipe_SelectPipe(MIDI_DATA_IN_PIPE);
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Pipe_Unfreeze();
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if (Pipe_IsINReceived())
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{
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MIDI_EventPacket_t MIDIEvent;
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Pipe_Read_Stream_LE(&MIDIEvent, sizeof(MIDIEvent), NULL);
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if (!(Pipe_BytesInPipe()))
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Pipe_ClearIN();
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bool NoteOnEvent = (MIDIEvent.Event == MIDI_EVENT(0, MIDI_COMMAND_NOTE_ON));
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bool NoteOffEvent = (MIDIEvent.Event == MIDI_EVENT(0, MIDI_COMMAND_NOTE_OFF));
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if (NoteOnEvent || NoteOffEvent)
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{
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printf_P(PSTR("MIDI Note %s - Channel %d, Pitch %d, Velocity %d\r\n"), NoteOnEvent ? "On" : "Off",
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((MIDIEvent.Data1 & 0x0F) + 1),
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MIDIEvent.Data2, MIDIEvent.Data3);
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}
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}
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Pipe_Freeze();
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Pipe_SelectPipe(MIDI_DATA_OUT_PIPE);
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Pipe_Unfreeze();
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if (Pipe_IsOUTReady())
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{
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uint8_t MIDICommand = 0;
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uint8_t MIDIPitch;
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static uint8_t PrevJoystickStatus;
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uint8_t JoystickStatus = Joystick_GetStatus();
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uint8_t JoystickChanges = (JoystickStatus ^ PrevJoystickStatus);
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/* Get board button status - if pressed use channel 10 (percussion), otherwise use channel 1 */
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uint8_t Channel = ((Buttons_GetStatus() & BUTTONS_BUTTON1) ? MIDI_CHANNEL(10) : MIDI_CHANNEL(1));
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if (JoystickChanges & JOY_LEFT)
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{
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MIDICommand = ((JoystickStatus & JOY_LEFT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
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MIDIPitch = 0x3C;
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}
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if (JoystickChanges & JOY_UP)
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{
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MIDICommand = ((JoystickStatus & JOY_UP)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
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MIDIPitch = 0x3D;
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}
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if (JoystickChanges & JOY_RIGHT)
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{
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MIDICommand = ((JoystickStatus & JOY_RIGHT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
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MIDIPitch = 0x3E;
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}
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if (JoystickChanges & JOY_DOWN)
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{
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MIDICommand = ((JoystickStatus & JOY_DOWN)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
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MIDIPitch = 0x3F;
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}
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if (JoystickChanges & JOY_PRESS)
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{
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MIDICommand = ((JoystickStatus & JOY_PRESS)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
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MIDIPitch = 0x3B;
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}
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/* Check if a MIDI command is to be sent */
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if (MIDICommand)
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{
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MIDI_EventPacket_t MIDIEvent = (MIDI_EventPacket_t)
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{
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.Event = MIDI_EVENT(0, MIDICommand),
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.Data1 = MIDICommand | Channel,
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.Data2 = MIDIPitch,
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.Data3 = MIDI_STANDARD_VELOCITY,
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};
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/* Write the MIDI event packet to the pipe */
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Pipe_Write_Stream_LE(&MIDIEvent, sizeof(MIDIEvent), NULL);
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/* Send the data in the pipe to the device */
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Pipe_ClearOUT();
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}
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Pipe_Freeze();
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/* Save previous joystick value for next joystick change detection */
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PrevJoystickStatus = JoystickStatus;
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}
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}
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