X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/e6881fd166586793a5a90effeefe4188092f383b..77a9df36a77d2523dd2bc24fa17f9f04c6c175c5:/Demos/Device/LowLevel/MIDI/MIDI.c?ds=sidebyside diff --git a/Demos/Device/LowLevel/MIDI/MIDI.c b/Demos/Device/LowLevel/MIDI/MIDI.c index 856f7dbe9..bd2ffa995 100644 --- a/Demos/Device/LowLevel/MIDI/MIDI.c +++ b/Demos/Device/LowLevel/MIDI/MIDI.c @@ -1,185 +1,215 @@ -/* - 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" - -/** 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) -{ - SetupHardware(); - - LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); - - for (;;) - { - MIDI_Task(); - 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(); -} - -/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs. */ -void EVENT_USB_Connect(void) -{ - /* Indicate USB enumerating */ - LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING); -} - -/** 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) -{ - /* Indicate USB not ready */ - LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); -} - -/** 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) -{ - /* Indicate USB connected and ready */ - LEDs_SetAllLEDs(LEDMASK_USB_READY); - - /* Setup MIDI stream endpoints */ - if (!(Endpoint_ConfigureEndpoint(MIDI_STREAM_OUT_EPNUM, EP_TYPE_BULK, - ENDPOINT_DIR_OUT, MIDI_STREAM_EPSIZE, - ENDPOINT_BANK_SINGLE))) - { - LEDs_SetAllLEDs(LEDMASK_USB_ERROR); - } - - if (!(Endpoint_ConfigureEndpoint(MIDI_STREAM_IN_EPNUM, EP_TYPE_BULK, - ENDPOINT_DIR_IN, MIDI_STREAM_EPSIZE, - ENDPOINT_BANK_SINGLE))) - { - LEDs_SetAllLEDs(LEDMASK_USB_ERROR); - } -} - -/** Task to handle the generation of MIDI note change events in response to presses of the board joystick, and send them - * to the host. - */ -void MIDI_Task(void) -{ - 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(); -} - -/** 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) -{ - /* If endpoint ready for more data, abort */ - if (!(Endpoint_IsReadWriteAllowed())) - return; - - /* 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(); -} +/* + LUFA Library + Copyright (C) Dean Camera, 2011. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, 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" + +/** Main program entry point. This routine configures the hardware required by the application, then + * enters a loop to run the application tasks in sequence. + */ +int main(void) +{ + SetupHardware(); + + LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); + sei(); + + for (;;) + { + MIDI_Task(); + 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(); +} + +/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs. */ +void EVENT_USB_Device_Connect(void) +{ + /* Indicate USB enumerating */ + LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING); +} + +/** 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_Device_Disconnect(void) +{ + /* Indicate USB not ready */ + LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); +} + +/** 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_Device_ConfigurationChanged(void) +{ + bool ConfigSuccess = true; + + /* Setup MIDI Data Endpoints */ + ConfigSuccess &= Endpoint_ConfigureEndpoint(MIDI_STREAM_IN_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_IN, + MIDI_STREAM_EPSIZE, ENDPOINT_BANK_SINGLE); + ConfigSuccess &= Endpoint_ConfigureEndpoint(MIDI_STREAM_OUT_EPNUM, EP_TYPE_BULK, ENDPOINT_DIR_OUT, + MIDI_STREAM_EPSIZE, ENDPOINT_BANK_SINGLE); + + /* Indicate endpoint configuration success or failure */ + LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR); +} + +/** Task to handle the generation of MIDI note change events in response to presses of the board joystick, and send them + * to the host. + */ +void MIDI_Task(void) +{ + static uint8_t PrevJoystickStatus; + + /* Device must be connected and configured for the task to run */ + if (USB_DeviceState != DEVICE_STATE_Configured) + return; + + Endpoint_SelectEndpoint(MIDI_STREAM_IN_EPNUM); + + if (Endpoint_IsINReady()) + { + uint8_t MIDICommand = 0; + uint8_t MIDIPitch; + + 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; + } + + /* Check if a MIDI command is to be sent */ + if (MIDICommand) + { + MIDI_EventPacket_t MIDIEvent = (MIDI_EventPacket_t) + { + .CableNumber = 0, + .Command = (MIDICommand >> 4), + + .Data1 = MIDICommand | Channel, + .Data2 = MIDIPitch, + .Data3 = MIDI_STANDARD_VELOCITY, + }; + + /* Write the MIDI event packet to the endpoint */ + Endpoint_Write_Stream_LE(&MIDIEvent, sizeof(MIDIEvent), NULL); + + /* Send the data in the endpoint to the host */ + Endpoint_ClearIN(); + } + + /* Save previous joystick value for next joystick change detection */ + PrevJoystickStatus = JoystickStatus; + } + + /* Select the MIDI OUT stream */ + Endpoint_SelectEndpoint(MIDI_STREAM_OUT_EPNUM); + + /* Check if a MIDI command has been received */ + if (Endpoint_IsOUTReceived()) + { + MIDI_EventPacket_t MIDIEvent; + + /* Read the MIDI event packet from the endpoint */ + Endpoint_Read_Stream_LE(&MIDIEvent, sizeof(MIDIEvent), NULL); + + /* Check to see if the sent command is a note on message with a non-zero velocity */ + if ((MIDIEvent.Command == (MIDI_COMMAND_NOTE_ON >> 4)) && (MIDIEvent.Data3 > 0)) + { + /* Change LEDs depending on the pitch of the sent note */ + LEDs_SetAllLEDs(MIDIEvent.Data2 > 64 ? LEDS_LED1 : LEDS_LED2); + } + else + { + /* Turn off all LEDs in response to non Note On messages */ + LEDs_SetAllLEDs(LEDS_NO_LEDS); + } + + /* If the endpoint is now empty, clear the bank */ + if (!(Endpoint_BytesInEndpoint())) + { + /* Clear the endpoint ready for new packet */ + Endpoint_ClearOUT(); + } + } +} +