Move new Class Driver powered demos to a new ClassDriver subdirectory, re-add old low level demos to a LowLevel subdirectory.

1 files changed, 219 insertions, 0 deletions

diff --git a/Demos/Device/LowLevel/MIDI/MIDI.c b/Demos/Device/LowLevel/MIDI/MIDI.c
new file mode 100644
index 000000000..b6b43df6a
--- /dev/null
+++ b/Demos/Device/LowLevel/MIDI/MIDI.c
@@ -0,0 +1,219 @@
+/*

+             LUFA Library

+     Copyright (C) Dean Camera, 2009.

+              

+  dean [at] fourwalledcubicle [dot] com

+      www.fourwalledcubicle.com

+*/

+

+/*

+  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)

+

+  Permission to use, copy, modify, and distribute this software

+  and its documentation for any purpose and without fee is hereby

+  granted, provided that the above copyright notice appear in all

+  copies and that both that the copyright notice and this

+  permission notice and warranty disclaimer appear in supporting

+  documentation, and that the name of the author not be used in

+  advertising or publicity pertaining to distribution of the

+  software without specific, written prior permission.

+

+  The author disclaim all warranties with regard to this

+  software, including all implied warranties of merchantability

+  and fitness.  In no event shall the author be liable for any

+  special, indirect or consequential damages or any damages

+  whatsoever resulting from loss of use, data or profits, whether

+  in an action of contract, negligence or other tortious action,

+  arising out of or in connection with the use or performance of

+  this software.

+*/

+

+/** \file

+ *

+ *  Main source file for the MIDI input demo. This file contains the main tasks of the demo and

+ *  is responsible for the initial application hardware configuration.

+ */

+

+#include "MIDI.h"

+

+/* Scheduler Task List */

+TASK_LIST

+{

+	{ .Task = USB_USBTask          , .TaskStatus = TASK_STOP },

+	{ .Task = USB_MIDI_Task        , .TaskStatus = TASK_STOP },

+};

+

+/** Main program entry point. This routine configures the hardware required by the application, then

+ *  starts the scheduler to run the application tasks.

+ */

+int main(void)

+{

+	/* Disable watchdog if enabled by bootloader/fuses */

+	MCUSR &= ~(1 << WDRF);

+	wdt_disable();

+

+	/* Disable clock division */

+	clock_prescale_set(clock_div_1);

+	

+	/* Hardware Initialization */

+	Joystick_Init();

+	LEDs_Init();

+	Buttons_Init();

+

+	/* Indicate USB not ready */

+	UpdateStatus(Status_USBNotReady);

+	

+	/* Initialize Scheduler so that it can be used */

+	Scheduler_Init();

+

+	/* Initialize USB Subsystem */

+	USB_Init();

+

+	/* Scheduling - routine never returns, so put this last in the main function */

+	Scheduler_Start();

+}

+

+/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs. */

+void EVENT_USB_Connect(void)

+{

+	/* Start USB management task */

+	Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);

+

+	/* Indicate USB enumerating */

+	UpdateStatus(Status_USBEnumerating);

+}

+

+/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via

+ *  the status LEDs, disables the sample update and PWM output timers and stops the USB and MIDI management tasks.

+ */

+void EVENT_USB_Disconnect(void)

+{

+	/* Stop running audio and USB management tasks */

+	Scheduler_SetTaskMode(USB_MIDI_Task, TASK_STOP);

+	Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);

+

+	/* Indicate USB not ready */

+	UpdateStatus(Status_USBNotReady);

+}

+

+/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration

+ *  of the USB device after enumeration - the device endpoints are configured and the MIDI management task started.

+ */

+void EVENT_USB_ConfigurationChanged(void)

+{

+	/* Setup MIDI stream endpoints */

+	Endpoint_ConfigureEndpoint(MIDI_STREAM_OUT_EPNUM, EP_TYPE_BULK,

+		                       ENDPOINT_DIR_OUT, MIDI_STREAM_EPSIZE,

+	                           ENDPOINT_BANK_SINGLE);

+

+	Endpoint_ConfigureEndpoint(MIDI_STREAM_IN_EPNUM, EP_TYPE_BULK,

+		                       ENDPOINT_DIR_IN, MIDI_STREAM_EPSIZE,

+	                           ENDPOINT_BANK_SINGLE);

+

+	/* Indicate USB connected and ready */

+	UpdateStatus(Status_USBReady);

+

+	/* Start MIDI task */

+	Scheduler_SetTaskMode(USB_MIDI_Task, TASK_RUN);

+}

+

+/** Task to handle the generation of MIDI note change events in response to presses of the board joystick, and send them

+ *  to the host.

+ */

+TASK(USB_MIDI_Task)

+{

+	static uint8_t PrevJoystickStatus;

+

+	/* Select the MIDI IN stream */

+	Endpoint_SelectEndpoint(MIDI_STREAM_IN_EPNUM);

+

+	/* Check if endpoint is ready to be written to */

+	if (Endpoint_IsINReady())

+	{

+		/* Get current joystick mask, XOR with previous to detect joystick changes */

+		uint8_t JoystickStatus  = Joystick_GetStatus();

+		uint8_t JoystickChanges = (JoystickStatus ^ PrevJoystickStatus);

+		

+		/* Get board button status - if pressed use channel 10 (percussion), otherwise use channel 1 */

+		uint8_t Channel = ((Buttons_GetStatus() & BUTTONS_BUTTON1) ? MIDI_CHANNEL(10) : MIDI_CHANNEL(1));

+

+		if (JoystickChanges & JOY_LEFT)

+		  SendMIDINoteChange(0x3C, (JoystickStatus & JOY_LEFT), 0, Channel);

+

+		if (JoystickChanges & JOY_UP)

+		  SendMIDINoteChange(0x3D, (JoystickStatus & JOY_UP), 0, Channel);

+

+		if (JoystickChanges & JOY_RIGHT)

+		  SendMIDINoteChange(0x3E, (JoystickStatus & JOY_RIGHT), 0, Channel);

+

+		if (JoystickChanges & JOY_DOWN)

+		  SendMIDINoteChange(0x3F, (JoystickStatus & JOY_DOWN), 0, Channel);

+

+		if (JoystickChanges & JOY_PRESS)

+		  SendMIDINoteChange(0x3B, (JoystickStatus & JOY_PRESS), 0, Channel);

+

+		/* Save previous joystick value for next joystick change detection */

+		PrevJoystickStatus = JoystickStatus;

+	}

+

+	/* Select the MIDI OUT stream */

+	Endpoint_SelectEndpoint(MIDI_STREAM_OUT_EPNUM);

+

+	/* Check if endpoint is ready to be read from, if so discard its (unused) data */

+	if (Endpoint_IsOUTReceived())

+	  Endpoint_ClearOUT();

+}

+

+/** Function to manage status updates to the user. This is done via LEDs on the given board, if available, but may be changed to

+ *  log to a serial port, or anything else that is suitable for status updates.

+ *

+ *  \param CurrentStatus  Current status of the system, from the MIDI_StatusCodes_t enum

+ */

+void UpdateStatus(uint8_t CurrentStatus)

+{

+	uint8_t LEDMask = LEDS_NO_LEDS;

+	

+	/* Set the LED mask to the appropriate LED mask based on the given status code */

+	switch (CurrentStatus)

+	{

+		case Status_USBNotReady:

+			LEDMask = (LEDS_LED1);

+			break;

+		case Status_USBEnumerating:

+			LEDMask = (LEDS_LED1 | LEDS_LED2);

+			break;

+		case Status_USBReady:

+			LEDMask = (LEDS_LED2 | LEDS_LED4);

+			break;

+	}

+	

+	/* Set the board LEDs to the new LED mask */

+	LEDs_SetAllLEDs(LEDMask);

+}

+

+/** Sends a MIDI note change event (note on or off) to the MIDI output jack, on the given virtual cable ID and channel.

+ *

+ *  \param Pitch    Pitch of the note to turn on or off

+ *  \param OnOff    Set to true if the note is on (being held down), or false otherwise

+ *  \param CableID  ID of the virtual cable to send the note change to

+ *  \param Channel  MIDI channel number to send the note change event to

+ */

+void SendMIDINoteChange(const uint8_t Pitch, const bool OnOff, const uint8_t CableID, const uint8_t Channel)

+{

+	/* Wait until endpoint ready for more data */

+	while (!(Endpoint_IsReadWriteAllowed()));

+

+	/* Check if the message should be a Note On or Note Off command */

+	uint8_t Command = ((OnOff)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);

+

+	/* Write the Packet Header to the endpoint */

+	Endpoint_Write_Byte((CableID << 4) | (Command >> 4));

+

+	/* Write the Note On/Off command with the specified channel, pitch and velocity */

+	Endpoint_Write_Byte(Command | Channel);

+	Endpoint_Write_Byte(Pitch);

+	Endpoint_Write_Byte(MIDI_STANDARD_VELOCITY);

+	

+	/* Send the data in the endpoint to the host */

+	Endpoint_ClearIN();

+}