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-rw-r--r--lib/lufa/Projects/MIDIToneGenerator/MIDIToneGenerator.c252
1 files changed, 0 insertions, 252 deletions
diff --git a/lib/lufa/Projects/MIDIToneGenerator/MIDIToneGenerator.c b/lib/lufa/Projects/MIDIToneGenerator/MIDIToneGenerator.c
deleted file mode 100644
index 6d9e08a19d..0000000000
--- a/lib/lufa/Projects/MIDIToneGenerator/MIDIToneGenerator.c
+++ /dev/null
@@ -1,252 +0,0 @@
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2017.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2017 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 disclaims 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 "MIDIToneGenerator.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_Device_t Keyboard_MIDI_Interface =
- {
- .Config =
- {
- .StreamingInterfaceNumber = INTERFACE_ID_AudioStream,
- .DataINEndpoint =
- {
- .Address = MIDI_STREAM_IN_EPADDR,
- .Size = MIDI_STREAM_EPSIZE,
- .Banks = 1,
- },
- .DataOUTEndpoint =
- {
- .Address = MIDI_STREAM_OUT_EPADDR,
- .Size = MIDI_STREAM_EPSIZE,
- .Banks = 1,
- },
- },
- };
-
-/** 8-bit 256 entry Sine Wave lookup table */
-static const uint8_t SineTable[256] =
-{
- 128, 131, 134, 137, 140, 143, 146, 149, 152, 156, 159, 162, 165, 168, 171, 174,
- 176, 179, 182, 185, 188, 191, 193, 196, 199, 201, 204, 206, 209, 211, 213, 216,
- 218, 220, 222, 224, 226, 228, 230, 232, 234, 236, 237, 239, 240, 242, 243, 245,
- 246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 254, 255, 255, 255, 255, 255,
- 255, 255, 255, 255, 255, 255, 254, 254, 253, 252, 252, 251, 250, 249, 248, 247,
- 246, 245, 243, 242, 240, 239, 237, 236, 234, 232, 230, 228, 226, 224, 222, 220,
- 218, 216, 213, 211, 209, 206, 204, 201, 199, 196, 193, 191, 188, 185, 182, 179,
- 176, 174, 171, 168, 165, 162, 159, 156, 152, 149, 146, 143, 140, 137, 134, 131,
- 128, 124, 121, 118, 115, 112, 109, 106, 103, 99, 96, 93, 90, 87, 84, 81,
- 79, 76, 73, 70, 67, 64, 62, 59, 56, 54, 51, 49, 46, 44, 42, 39,
- 37, 35, 33, 31, 29, 27, 25, 23, 21, 19, 18, 16, 15, 13, 12, 10,
- 9, 8, 7, 6, 5, 4, 3, 3, 2, 1, 1, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 1, 1, 2, 3, 3, 4, 5, 6, 7, 8,
- 9, 10, 12, 13, 15, 16, 18, 19, 21, 23, 25, 27, 29, 31, 33, 35,
- 37, 39, 42, 44, 46, 49, 51, 54, 56, 59, 62, 64, 67, 70, 73, 76,
- 79, 81, 84, 87, 90, 93, 96, 99, 103, 106, 109, 112, 115, 118, 121, 124,
-};
-
-/** Array of structures describing each note being generated */
-static DDSNoteData NoteData[MAX_SIMULTANEOUS_NOTES];
-
-
-/** 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);
- GlobalInterruptEnable();
-
- for (;;)
- {
- MIDI_EventPacket_t ReceivedMIDIEvent;
- if (MIDI_Device_ReceiveEventPacket(&Keyboard_MIDI_Interface, &ReceivedMIDIEvent))
- {
- if ((ReceivedMIDIEvent.Event == MIDI_EVENT(0, MIDI_COMMAND_NOTE_ON)) && ((ReceivedMIDIEvent.Data1 & 0x0F) == 0))
- {
- DDSNoteData* LRUNoteStruct = &NoteData[0];
-
- /* Find a free entry in the note table to use for the note being turned on */
- for (uint8_t i = 0; i < MAX_SIMULTANEOUS_NOTES; i++)
- {
- /* Check if the note is unused */
- if (!(NoteData[i].Pitch))
- {
- /* If a note is unused, it's age is essentially infinite - always prefer unused note entries */
- LRUNoteStruct = &NoteData[i];
- break;
- }
- else if (NoteData[i].LRUAge >= LRUNoteStruct->LRUAge)
- {
- /* If an older entry that the current entry has been found, prefer overwriting that one */
- LRUNoteStruct = &NoteData[i];
- }
-
- NoteData[i].LRUAge++;
- }
-
- /* Update the oldest note entry with the new note data and reset its age */
- LRUNoteStruct->Pitch = ReceivedMIDIEvent.Data2;
- LRUNoteStruct->TableIncrement = (uint32_t)(BASE_INCREMENT * SCALE_FACTOR) +
- ((uint32_t)(BASE_INCREMENT * NOTE_OCTIVE_RATIO * SCALE_FACTOR) *
- (ReceivedMIDIEvent.Data2 - BASE_PITCH_INDEX));
- LRUNoteStruct->TablePosition = 0;
- LRUNoteStruct->LRUAge = 0;
-
- /* Turn on indicator LED to indicate note generation activity */
- LEDs_SetAllLEDs(LEDS_LED1);
- }
- else if ((ReceivedMIDIEvent.Event == MIDI_EVENT(0, MIDI_COMMAND_NOTE_OFF)) && ((ReceivedMIDIEvent.Data1 & 0x0F) == 0))
- {
- bool FoundActiveNote = false;
-
- /* Find the note in the note table to turn off */
- for (uint8_t i = 0; i < MAX_SIMULTANEOUS_NOTES; i++)
- {
- if (NoteData[i].Pitch == ReceivedMIDIEvent.Data2)
- NoteData[i].Pitch = 0;
- else if (NoteData[i].Pitch)
- FoundActiveNote = true;
- }
-
- /* If all notes off, turn off the indicator LED */
- if (!(FoundActiveNote))
- LEDs_SetAllLEDs(LEDS_NO_LEDS);
- }
- }
-
- MIDI_Device_USBTask(&Keyboard_MIDI_Interface);
- USB_USBTask();
- }
-}
-
-/** ISR to handle the reloading of the PWM timer with the next sample. */
-ISR(TIMER0_COMPA_vect, ISR_BLOCK)
-{
- uint16_t MixedSample = 0;
-
- /* Sum together all the active notes to form a single sample */
- for (uint8_t i = 0; i < MAX_SIMULTANEOUS_NOTES; i++)
- {
- /* A non-zero pitch indicates the note is active */
- if (NoteData[i].Pitch)
- {
- /* Use the top 8 bits of the table position as the sample table index */
- uint8_t TableIndex = (NoteData[i].TablePosition >> 24);
-
- /* Add the new tone sample to the accumulator and increment the table position */
- MixedSample += SineTable[TableIndex];
- NoteData[i].TablePosition += NoteData[i].TableIncrement;
- }
- }
-
- /* Output clamped mixed sample value to the PWM */
- OCR3A = (MixedSample <= 0xFF) ? MixedSample : 0xFF;
-}
-
-/** Configures the board hardware and chip peripherals for the demo's functionality. */
-void SetupHardware(void)
-{
-#if (ARCH == ARCH_AVR8)
- /* Disable watchdog if enabled by bootloader/fuses */
- MCUSR &= ~(1 << WDRF);
- wdt_disable();
-
- /* Disable clock division */
- clock_prescale_set(clock_div_1);
-#endif
-
- /* Hardware Initialization */
- LEDs_Init();
- USB_Init();
-
- /* Sample reload timer initialization */
- TIMSK0 = (1 << OCIE0A);
- OCR0A = (VIRTUAL_SAMPLE_TABLE_SIZE / 8);
- TCCR0A = (1 << WGM01); // CTC mode
- TCCR0B = (1 << CS01); // Fcpu/8 speed
-
- /* Set speaker as output */
- DDRC |= (1 << 6);
-
- /* PWM speaker timer initialization */
- TCCR3A = ((1 << WGM31) | (1 << COM3A1) | (1 << COM3A0)); // Set on match, clear on TOP
- TCCR3B = ((1 << WGM32) | (1 << CS30)); // Fast 8-Bit PWM, Fcpu speed
-}
-
-/** Event handler for the library USB Connection event. */
-void EVENT_USB_Device_Connect(void)
-{
- LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
-
- /* Set speaker as output */
- DDRC |= (1 << 6);
-}
-
-/** Event handler for the library USB Disconnection event. */
-void EVENT_USB_Device_Disconnect(void)
-{
- LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
-
- /* Disable any notes currently being played */
- for (uint8_t i = 0; i < MAX_SIMULTANEOUS_NOTES; i++)
- NoteData[i].Pitch = 0;
-
- /* Set speaker as input to reduce current draw */
- DDRC &= ~(1 << 6);
-}
-
-/** Event handler for the library USB Configuration Changed event. */
-void EVENT_USB_Device_ConfigurationChanged(void)
-{
- bool ConfigSuccess = true;
-
- ConfigSuccess &= MIDI_Device_ConfigureEndpoints(&Keyboard_MIDI_Interface);
-
- LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
-}
-
-/** Event handler for the library USB Control Request event. */
-void EVENT_USB_Device_ControlRequest(void)
-{
- MIDI_Device_ProcessControlRequest(&Keyboard_MIDI_Interface);
-}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 08:42:45 +0000