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Diffstat (limited to 'Projects/MIDIToneGenerator/MIDIToneGenerator.h')
| -rw-r--r-- | Projects/MIDIToneGenerator/MIDIToneGenerator.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/Projects/MIDIToneGenerator/MIDIToneGenerator.h b/Projects/MIDIToneGenerator/MIDIToneGenerator.h new file mode 100644 index 0000000000..026a6ee38d --- /dev/null +++ b/Projects/MIDIToneGenerator/MIDIToneGenerator.h @@ -0,0 +1,105 @@ +/* + 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 + * + * Header file for AudioOutput.c. + */ + +#ifndef _AUDIO_OUTPUT_H_ +#define _AUDIO_OUTPUT_H_ + + /* Includes: */ + #include <avr/io.h> + #include <avr/wdt.h> + #include <avr/power.h> + #include <avr/pgmspace.h> + #include <avr/interrupt.h> + #include <stdbool.h> + + #include "Descriptors.h" + #include "Config/AppConfig.h" + + #include <LUFA/Drivers/Board/LEDs.h> + #include <LUFA/Drivers/USB/USB.h> + #include <LUFA/Platform/Platform.h> + + /* Macros: */ + /** LED mask for the library LED driver, to indicate that the USB interface is not ready. */ + #define LEDMASK_USB_NOTREADY LEDS_LED1 + + /** LED mask for the library LED driver, to indicate that the USB interface is enumerating. */ + #define LEDMASK_USB_ENUMERATING (LEDS_LED2 | LEDS_LED3) + + /** LED mask for the library LED driver, to indicate that the USB interface is ready. */ + #define LEDMASK_USB_READY (LEDS_LED2 | LEDS_LED4) + + /** LED mask for the library LED driver, to indicate that an error has occurred in the USB interface. */ + #define LEDMASK_USB_ERROR (LEDS_LED1 | LEDS_LED3) + + /** Scale factor used to convert the floating point frequencies and ratios into a fixed point number */ + #define SCALE_FACTOR 65536 + + /** Base (lowest) allowable MIDI note frequency */ + #define BASE_FREQUENCY 27.5 + + /** Ratio between each note in an octave */ + #define NOTE_OCTIVE_RATIO 1.05946 + + /** Lowest valid MIDI pitch index */ + #define BASE_PITCH_INDEX 21 + + /** Number of samples in the virtual sample table (can be expanded to lower maximum frequency, but allow for + * more simultaneous notes due to the reduced amount of processing time needed when the samples are spaced out) + */ + #define VIRTUAL_SAMPLE_TABLE_SIZE 512 + + /** Sample table increments per period for the base MIDI note frequency */ + #define BASE_INCREMENT (((F_CPU / VIRTUAL_SAMPLE_TABLE_SIZE / 2) / BASE_FREQUENCY)) + + /* Type Defines: */ + typedef struct + { + uint8_t LRUAge; + uint8_t Pitch; + uint32_t TableIncrement; + uint32_t TablePosition; + } DDSNoteData; + + /* Function Prototypes: */ + void SetupHardware(void); + + void EVENT_USB_Device_Connect(void); + void EVENT_USB_Device_Disconnect(void); + void EVENT_USB_Device_ConfigurationChanged(void); + void EVENT_USB_Device_UnhandledControlRequest(void); + +#endif + |