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authorDean Camera <dean@fourwalledcubicle.com>2009-06-05 07:16:33 +0000
committerDean Camera <dean@fourwalledcubicle.com>2009-06-05 07:16:33 +0000
commitb9b03aadb219d06fbad9d110e508db93e45461af (patch)
tree95a91a07c07953009e71613b320c20d1954be3fc /Demos/Device/ClassDriver/MIDI/MIDI.c
parent6a7c298c0f7119e44e18de15d714cd8b938e3bef (diff)
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Move new Class Driver powered demos to a new ClassDriver subdirectory, re-add old low level demos to a LowLevel subdirectory.
Diffstat (limited to 'Demos/Device/ClassDriver/MIDI/MIDI.c')
-rw-r--r--Demos/Device/ClassDriver/MIDI/MIDI.c177
1 files changed, 177 insertions, 0 deletions
diff --git a/Demos/Device/ClassDriver/MIDI/MIDI.c b/Demos/Device/ClassDriver/MIDI/MIDI.c
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+++ b/Demos/Device/ClassDriver/MIDI/MIDI.c
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+/*
+ 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 demo. This file contains the main tasks of
+ * the demo and is responsible for the initial application hardware configuration.
+ */
+
+#include "MIDI.h"
+
+/** LUFA MIDI Class driver interface configuration and state information. This structure is
+ * passed to all MIDI Class driver functions, so that multiple instances of the same class
+ * within a device can be differentiated from one another.
+ */
+USB_ClassInfo_MIDI_t Keyboard_MIDI_Interface =
+ {
+ .StreamingInterfaceNumber = 1,
+
+ .DataINEndpointNumber = MIDI_STREAM_IN_EPNUM,
+ .DataINEndpointSize = MIDI_STREAM_EPSIZE,
+
+ .DataOUTEndpointNumber = MIDI_STREAM_OUT_EPNUM,
+ .DataOUTEndpointSize = MIDI_STREAM_EPSIZE,
+ };
+
+/** Main program entry point. This routine contains the overall program flow, including initial
+ * setup of all components and the main program loop.
+ */
+int main(void)
+{
+ SetupHardware();
+
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+
+ for (;;)
+ {
+ CheckJoystickMovement();
+
+ USB_MIDI_USBTask(&Keyboard_MIDI_Interface);
+ USB_USBTask();
+ }
+}
+
+/** Configures the board hardware and chip peripherals for the demo's functionality. */
+void SetupHardware(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();
+ USB_Init();
+}
+
+/** Checks for changes in the position of the board joystick, sending MIDI events to the host upon each change. */
+void CheckJoystickMovement(void)
+{
+ static uint8_t PrevJoystickStatus;
+
+ uint8_t MIDICommand = 0;
+ uint8_t MIDIPitch;
+
+ /* 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)
+ {
+ MIDICommand = ((JoystickStatus & JOY_LEFT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
+ MIDIPitch = 0x3C;
+ }
+
+ if (JoystickChanges & JOY_UP)
+ {
+ MIDICommand = ((JoystickStatus & JOY_UP)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
+ MIDIPitch = 0x3D;
+ }
+
+ if (JoystickChanges & JOY_RIGHT)
+ {
+ MIDICommand = ((JoystickStatus & JOY_RIGHT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
+ MIDIPitch = 0x3E;
+ }
+
+ if (JoystickChanges & JOY_DOWN)
+ {
+ MIDICommand = ((JoystickStatus & JOY_DOWN)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
+ MIDIPitch = 0x3F;
+ }
+
+ if (JoystickChanges & JOY_PRESS)
+ {
+ MIDICommand = ((JoystickStatus & JOY_PRESS)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
+ MIDIPitch = 0x3B;
+ }
+
+ if (MIDICommand)
+ {
+ USB_MIDI_EventPacket_t MIDIEvent = (USB_MIDI_EventPacket_t)
+ {
+ .CableNumber = 0,
+ .Command = MIDICommand,
+
+ .Data1 = (MIDICommand << 4) | Channel,
+ .Data2 = MIDIPitch,
+ .Data3 = MIDI_STANDARD_VELOCITY,
+ };
+
+ USB_MIDI_SendEventPacket(&Keyboard_MIDI_Interface, &MIDIEvent);
+ }
+
+ PrevJoystickStatus = JoystickStatus;
+}
+
+/** Event handler for the library USB Connection event. */
+void EVENT_USB_Connect(void)
+{
+ LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
+}
+
+/** Event handler for the library USB Disconnection event. */
+void EVENT_USB_Disconnect(void)
+{
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+}
+
+/** Event handler for the library USB Configuration Changed event. */
+void EVENT_USB_ConfigurationChanged(void)
+{
+ LEDs_SetAllLEDs(LEDMASK_USB_READY);
+
+ if (!(USB_MIDI_ConfigureEndpoints(&Keyboard_MIDI_Interface)))
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+}
+
+/** Event handler for the library USB Unhandled Control Packet event. */
+void EVENT_USB_UnhandledControlPacket(void)
+{
+ USB_MIDI_ProcessControlPacket(&Keyboard_MIDI_Interface);
+}