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			265 lines
		
	
	
		
			8.1 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			265 lines
		
	
	
		
			8.1 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/*
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             LUFA Library
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     Copyright (C) Dean Camera, 2010.
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  dean [at] fourwalledcubicle [dot] com
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      www.fourwalledcubicle.com
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*/
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/*
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  Copyright 2010  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 disclaim 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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/** LUFA MIDI Class driver interface configuration and state information. This structure is
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 *  passed to all MIDI Class driver functions, so that multiple instances of the same class
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 *  within a device can be differentiated from one another.
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 */
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USB_ClassInfo_MIDI_Host_t Keyboard_MIDI_Interface =
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	{
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		.Config =
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			{
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				.DataINPipeNumber       = 1,
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				.DataINPipeDoubleBank   = false,
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				.DataOUTPipeNumber      = 2,
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				.DataOUTPipeDoubleBank  = false,
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			},
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	};
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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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	sei();
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	for (;;)
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	{
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		switch (USB_HostState)
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		{
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			case HOST_STATE_Addressed:
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				LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
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				uint16_t ConfigDescriptorSize;
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				uint8_t  ConfigDescriptorData[512];
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				if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
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				                                       sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
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				{
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					puts_P(PSTR("Error Retrieving Configuration Descriptor.\r\n"));
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					LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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					USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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					break;
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				}
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				if (MIDI_Host_ConfigurePipes(&Keyboard_MIDI_Interface,
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				                             ConfigDescriptorSize, ConfigDescriptorData) != MIDI_ENUMERROR_NoError)
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				{
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					puts_P(PSTR("Attached Device Not a Valid MIDI Class Device.\r\n"));
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					LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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					USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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					break;
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				}
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				if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
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				{
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					puts_P(PSTR("Error Setting Device Configuration.\r\n"));
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					LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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					USB_HostState = HOST_STATE_WaitForDeviceRemoval;
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					break;
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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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				USB_HostState = HOST_STATE_Configured;
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				break;
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			case HOST_STATE_Configured:
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				CheckJoystickMovement();
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				MIDI_EventPacket_t MIDIEvent;
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				if (MIDI_Host_ReceiveEventPacket(&Keyboard_MIDI_Interface, &MIDIEvent))
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				{
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					bool NoteOnEvent  = ((MIDIEvent.Command & 0x0F) == (MIDI_COMMAND_NOTE_ON  >> 4));
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					bool NoteOffEvent = ((MIDIEvent.Command & 0x0F) == (MIDI_COMMAND_NOTE_OFF >> 4));
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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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				break;
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		}
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		MIDI_Host_USBTask(&Keyboard_MIDI_Interface);
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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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	/* 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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	/* Hardware Initialization */
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	SerialStream_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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}
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void CheckJoystickMovement(void)
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{
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	static uint8_t PrevJoystickStatus;
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	uint8_t MIDICommand = 0;
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	uint8_t MIDIPitch;
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	/* Get current joystick mask, XOR with previous to detect joystick changes */
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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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	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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				.CableNumber = 0,
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				.Command     = (MIDICommand >> 4),
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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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		MIDI_Host_SendEventPacket(&Keyboard_MIDI_Interface, &MIDIEvent);
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		MIDI_Host_Flush(&Keyboard_MIDI_Interface);
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	}
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	PrevJoystickStatus = JoystickStatus;
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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("Device Attached.\r\n"));
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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("\r\nDevice Unattached.\r\n"));
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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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	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_ShutDown();
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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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