-/*\r
- LUFA Library\r
- Copyright (C) Dean Camera, 2009.\r
- \r
- dean [at] fourwalledcubicle [dot] com\r
- www.fourwalledcubicle.com\r
-*/\r
-\r
-/*\r
- Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
- Permission to use, copy, modify, and distribute this software\r
- and its documentation for any purpose and without fee is hereby\r
- granted, provided that the above copyright notice appear in all\r
- copies and that both that the copyright notice and this\r
- permission notice and warranty disclaimer appear in supporting\r
- documentation, and that the name of the author not be used in\r
- advertising or publicity pertaining to distribution of the\r
- software without specific, written prior permission.\r
-\r
- The author disclaim all warranties with regard to this\r
- software, including all implied warranties of merchantability\r
- and fitness. In no event shall the author be liable for any\r
- special, indirect or consequential damages or any damages\r
- whatsoever resulting from loss of use, data or profits, whether\r
- in an action of contract, negligence or other tortious action,\r
- arising out of or in connection with the use or performance of\r
- this software.\r
-*/\r
-\r
-/** \file\r
- *\r
- * Main source file for the MIDI input demo. This file contains the main tasks of the demo and\r
- * is responsible for the initial application hardware configuration.\r
- */\r
-\r
-#include "MIDI.h"\r
-\r
-/* Project Tags, for reading out using the ButtLoad project */\r
-BUTTLOADTAG(ProjName, "LUFA MIDI App");\r
-BUTTLOADTAG(BuildTime, __TIME__);\r
-BUTTLOADTAG(BuildDate, __DATE__);\r
-BUTTLOADTAG(LUFAVersion, "LUFA V" LUFA_VERSION_STRING);\r
-\r
-/* Scheduler Task List */\r
-TASK_LIST\r
-{\r
- { Task: USB_USBTask , TaskStatus: TASK_STOP },\r
- { Task: USB_MIDI_Task , TaskStatus: TASK_STOP },\r
-};\r
-\r
-/** Main program entry point. This routine configures the hardware required by the application, then\r
- * starts the scheduler to run the application tasks.\r
- */\r
-int main(void)\r
-{\r
- /* Disable watchdog if enabled by bootloader/fuses */\r
- MCUSR &= ~(1 << WDRF);\r
- wdt_disable();\r
-\r
- /* Disable clock division */\r
- clock_prescale_set(clock_div_1);\r
- \r
- /* Hardware Initialization */\r
- Joystick_Init();\r
- LEDs_Init();\r
- HWB_Init();\r
-\r
- /* Indicate USB not ready */\r
- UpdateStatus(Status_USBNotReady);\r
- \r
- /* Initialize Scheduler so that it can be used */\r
- Scheduler_Init();\r
-\r
- /* Initialize USB Subsystem */\r
- USB_Init();\r
-\r
- /* Scheduling - routine never returns, so put this last in the main function */\r
- Scheduler_Start();\r
-}\r
-\r
-/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs. */\r
-EVENT_HANDLER(USB_Connect)\r
-{\r
- /* Start USB management task */\r
- Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);\r
-\r
- /* Indicate USB enumerating */\r
- UpdateStatus(Status_USBEnumerating);\r
-}\r
-\r
-/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via\r
- * the status LEDs, disables the sample update and PWM output timers and stops the USB and MIDI management tasks.\r
- */\r
-EVENT_HANDLER(USB_Disconnect)\r
-{\r
- /* Stop running audio and USB management tasks */\r
- Scheduler_SetTaskMode(USB_MIDI_Task, TASK_STOP);\r
- Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);\r
-\r
- /* Indicate USB not ready */\r
- UpdateStatus(Status_USBNotReady);\r
-}\r
-\r
-/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration\r
- * of the USB device after enumeration - the device endpoints are configured and the MIDI management task started.\r
- */\r
-EVENT_HANDLER(USB_ConfigurationChanged)\r
-{\r
- /* Setup MIDI stream endpoints */\r
- Endpoint_ConfigureEndpoint(MIDI_STREAM_OUT_EPNUM, EP_TYPE_BULK,\r
- ENDPOINT_DIR_OUT, MIDI_STREAM_EPSIZE,\r
- ENDPOINT_BANK_SINGLE);\r
-\r
- Endpoint_ConfigureEndpoint(MIDI_STREAM_IN_EPNUM, EP_TYPE_BULK,\r
- ENDPOINT_DIR_IN, MIDI_STREAM_EPSIZE,\r
- ENDPOINT_BANK_SINGLE);\r
-\r
- /* Indicate USB connected and ready */\r
- UpdateStatus(Status_USBReady);\r
-\r
- /* Start MIDI task */\r
- Scheduler_SetTaskMode(USB_MIDI_Task, TASK_RUN);\r
-}\r
-\r
-/** Task to handle the generation of MIDI note change events in response to presses of the board joystick, and send them\r
- * to the host.\r
- */\r
-TASK(USB_MIDI_Task)\r
-{\r
- static uint8_t PrevJoystickStatus;\r
-\r
- /* Select the MIDI IN stream */\r
- Endpoint_SelectEndpoint(MIDI_STREAM_IN_EPNUM);\r
-\r
- /* Check if endpoint is ready to be written to */\r
- if (Endpoint_ReadWriteAllowed())\r
- {\r
- /* Get current joystick mask, XOR with previous to detect joystick changes */\r
- uint8_t JoystickStatus = Joystick_GetStatus();\r
- uint8_t JoystickChanges = (JoystickStatus ^ PrevJoystickStatus);\r
- \r
- /* Get HWB status - if set use channel 10 (percussion), otherwise use channel 1 */\r
- uint8_t Channel = ((HWB_GetStatus()) ? MIDI_CHANNEL(10) : MIDI_CHANNEL(1));\r
-\r
- if (JoystickChanges & JOY_LEFT)\r
- SendMIDINoteChange(0x3C, (JoystickStatus & JOY_LEFT), 0, Channel);\r
-\r
- if (JoystickChanges & JOY_UP)\r
- SendMIDINoteChange(0x3D, (JoystickStatus & JOY_UP), 0, Channel);\r
-\r
- if (JoystickChanges & JOY_RIGHT)\r
- SendMIDINoteChange(0x3E, (JoystickStatus & JOY_RIGHT), 0, Channel);\r
-\r
- if (JoystickChanges & JOY_DOWN)\r
- SendMIDINoteChange(0x3F, (JoystickStatus & JOY_DOWN), 0, Channel);\r
-\r
- if (JoystickChanges & JOY_PRESS)\r
- SendMIDINoteChange(0x3B, (JoystickStatus & JOY_PRESS), 0, Channel);\r
-\r
- /* Save previous joystick value for next joystick change detection */\r
- PrevJoystickStatus = JoystickStatus;\r
- }\r
-\r
- /* Select the MIDI OUT stream */\r
- Endpoint_SelectEndpoint(MIDI_STREAM_OUT_EPNUM);\r
-\r
- /* Check if endpoint is ready to be read from, if so discard its (unused) data */\r
- if (Endpoint_ReadWriteAllowed())\r
- Endpoint_ClearCurrentBank();\r
-}\r
-\r
-/** Function to manage status updates to the user. This is done via LEDs on the given board, if available, but may be changed to\r
- * log to a serial port, or anything else that is suitable for status updates.\r
- *\r
- * \param CurrentStatus Current status of the system, from the MIDI_StatusCodes_t enum\r
- */\r
-void UpdateStatus(uint8_t CurrentStatus)\r
-{\r
- uint8_t LEDMask = LEDS_NO_LEDS;\r
- \r
- /* Set the LED mask to the appropriate LED mask based on the given status code */\r
- switch (CurrentStatus)\r
- {\r
- case Status_USBNotReady:\r
- LEDMask = (LEDS_LED1);\r
- break;\r
- case Status_USBEnumerating:\r
- LEDMask = (LEDS_LED1 | LEDS_LED2);\r
- break;\r
- case Status_USBReady:\r
- LEDMask = (LEDS_LED2 | LEDS_LED4);\r
- break;\r
- }\r
- \r
- /* Set the board LEDs to the new LED mask */\r
- LEDs_SetAllLEDs(LEDMask);\r
-}\r
-\r
-/** Sends a MIDI note change event (note on or off) to the MIDI output jack, on the given virtual cable ID and channel.\r
- *\r
- * \param Pitch Pitch of the note to turn on or off\r
- * \param OnOff Set to true if the note is on (being held down), or false otherwise\r
- * \param CableID ID of the virtual cable to send the note change to\r
- * \param Channel MIDI channel number to send the note change event to\r
- */\r
-void SendMIDINoteChange(const uint8_t Pitch, const bool OnOff, const uint8_t CableID, const uint8_t Channel)\r
-{\r
- /* Wait until endpoint ready for more data */\r
- while (!(Endpoint_ReadWriteAllowed()));\r
-\r
- /* Check if the message should be a Note On or Note Off command */\r
- uint8_t Command = ((OnOff)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);\r
-\r
- /* Write the Packet Header to the endpoint */\r
- Endpoint_Write_Byte((CableID << 4) | (Command >> 4));\r
-\r
- /* Write the Note On/Off command with the specified channel, pitch and velocity */\r
- Endpoint_Write_Byte(Command | Channel);\r
- Endpoint_Write_Byte(Pitch);\r
- Endpoint_Write_Byte(MIDI_STANDARD_VELOCITY);\r
- \r
- /* Send the data in the endpoint to the host */\r
- Endpoint_ClearCurrentBank();\r
-}\r
projects / pub / lufa.git / blobdiff