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dc0e46e Rename LUFA to LUFA-git
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215b764 Merge commit 'afa0f22a9299686fd88f58ce09c5b521ac917e8f' as 'protocol/lufa/LUFA'
afa0f22 Squashed 'protocol/lufa/LUFA/' content from commit def7fca
c0c42fa Remove submodule of LUFA
30f897d Merge commit '87ced33feb74e79c3281dda36eb6d6d153399b41' as 'protocol/usb_hid/USB_Host_Shield_2.0'
87ced33 Squashed 'protocol/usb_hid/USB_Host_Shield_2.0/' content from commit aab4a69
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git-subtree-dir: tmk_core
git-subtree-split: dc0e46eaa4367d4e218f8816e3c117895820f07c
This commit is contained in:
tmk 2015-05-13 11:13:10 +09:00
parent 4d116a04e9
commit f6d56675f9
1575 changed files with 421901 additions and 63190 deletions

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/*
LUFA Library
Copyright (C) Dean Camera, 2014.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2014 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
* \brief Application Configuration Header File
*
* This is a header file which is be used to configure some of
* the application's compile time options, as an alternative to
* specifying the compile time constants supplied through a
* makefile or build system.
*
* For information on what each token does, refer to the
* \ref Sec_Options section of the application documentation.
*/
#ifndef _APP_CONFIG_H_
#define _APP_CONFIG_H_
#define MAX_SIMULTANEOUS_NOTES 3
#endif

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/*
LUFA Library
Copyright (C) Dean Camera, 2014.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2014 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
* \brief LUFA Library Configuration Header File
*
* This header file is used to configure LUFA's compile time options,
* as an alternative to the compile time constants supplied through
* a makefile.
*
* For information on what each token does, refer to the LUFA
* manual section "Summary of Compile Tokens".
*/
#ifndef _LUFA_CONFIG_H_
#define _LUFA_CONFIG_H_
#if (ARCH == ARCH_AVR8)
/* Non-USB Related Configuration Tokens: */
// #define DISABLE_TERMINAL_CODES
/* USB Class Driver Related Tokens: */
// #define HID_HOST_BOOT_PROTOCOL_ONLY
// #define HID_STATETABLE_STACK_DEPTH {Insert Value Here}
// #define HID_USAGE_STACK_DEPTH {Insert Value Here}
// #define HID_MAX_COLLECTIONS {Insert Value Here}
// #define HID_MAX_REPORTITEMS {Insert Value Here}
// #define HID_MAX_REPORT_IDS {Insert Value Here}
// #define NO_CLASS_DRIVER_AUTOFLUSH
/* General USB Driver Related Tokens: */
// #define ORDERED_EP_CONFIG
#define USE_STATIC_OPTIONS (USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)
#define USB_DEVICE_ONLY
// #define USB_HOST_ONLY
// #define USB_STREAM_TIMEOUT_MS {Insert Value Here}
// #define NO_LIMITED_CONTROLLER_CONNECT
// #define NO_SOF_EVENTS
/* USB Device Mode Driver Related Tokens: */
// #define USE_RAM_DESCRIPTORS
#define USE_FLASH_DESCRIPTORS
// #define USE_EEPROM_DESCRIPTORS
// #define NO_INTERNAL_SERIAL
#define FIXED_CONTROL_ENDPOINT_SIZE 8
#define DEVICE_STATE_AS_GPIOR 0
#define FIXED_NUM_CONFIGURATIONS 1
// #define CONTROL_ONLY_DEVICE
// #define INTERRUPT_CONTROL_ENDPOINT
// #define NO_DEVICE_REMOTE_WAKEUP
// #define NO_DEVICE_SELF_POWER
/* USB Host Mode Driver Related Tokens: */
// #define HOST_STATE_AS_GPIOR {Insert Value Here}
// #define USB_HOST_TIMEOUT_MS {Insert Value Here}
// #define HOST_DEVICE_SETTLE_DELAY_MS {Insert Value Here}
// #define NO_AUTO_VBUS_MANAGEMENT
// #define INVERTED_VBUS_ENABLE_LINE
#else
#error Unsupported architecture for this LUFA configuration file.
#endif
#endif

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/*
LUFA Library
Copyright (C) Dean Camera, 2014.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2014 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
*
* USB Device Descriptors, for library use when in USB device mode. Descriptors are special
* computer-readable structures which the host requests upon device enumeration, to determine
* the device's capabilities and functions.
*/
#include "Descriptors.h"
/** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall
* device characteristics, including the supported USB version, control endpoint size and the
* number of device configurations. The descriptor is read out by the USB host when the enumeration
* process begins.
*/
const USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
{
.Header = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device},
.USBSpecification = VERSION_BCD(1,1,0),
.Class = USB_CSCP_NoDeviceClass,
.SubClass = USB_CSCP_NoDeviceSubclass,
.Protocol = USB_CSCP_NoDeviceProtocol,
.Endpoint0Size = FIXED_CONTROL_ENDPOINT_SIZE,
.VendorID = 0x03EB,
.ProductID = 0x2048,
.ReleaseNumber = VERSION_BCD(0,0,1),
.ManufacturerStrIndex = STRING_ID_Manufacturer,
.ProductStrIndex = STRING_ID_Product,
.SerialNumStrIndex = NO_DESCRIPTOR,
.NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
};
/** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage
* of the device in one of its supported configurations, including information about any device interfaces
* and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting
* a configuration so that the host may correctly communicate with the USB device.
*/
const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
{
.Config =
{
.Header = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration},
.TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t),
.TotalInterfaces = 2,
.ConfigurationNumber = 1,
.ConfigurationStrIndex = NO_DESCRIPTOR,
.ConfigAttributes = (USB_CONFIG_ATTR_RESERVED | USB_CONFIG_ATTR_SELFPOWERED),
.MaxPowerConsumption = USB_CONFIG_POWER_MA(100)
},
.Audio_ControlInterface =
{
.Header = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
.InterfaceNumber = INTERFACE_ID_AudioControl,
.AlternateSetting = 0,
.TotalEndpoints = 0,
.Class = AUDIO_CSCP_AudioClass,
.SubClass = AUDIO_CSCP_ControlSubclass,
.Protocol = AUDIO_CSCP_ControlProtocol,
.InterfaceStrIndex = NO_DESCRIPTOR
},
.Audio_ControlInterface_SPC =
{
.Header = {.Size = sizeof(USB_Audio_Descriptor_Interface_AC_t), .Type = DTYPE_CSInterface},
.Subtype = AUDIO_DSUBTYPE_CSInterface_Header,
.ACSpecification = VERSION_BCD(1,0,0),
.TotalLength = sizeof(USB_Audio_Descriptor_Interface_AC_t),
.InCollection = 1,
.InterfaceNumber = INTERFACE_ID_AudioStream,
},
.Audio_StreamInterface =
{
.Header = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
.InterfaceNumber = INTERFACE_ID_AudioStream,
.AlternateSetting = 0,
.TotalEndpoints = 2,
.Class = AUDIO_CSCP_AudioClass,
.SubClass = AUDIO_CSCP_MIDIStreamingSubclass,
.Protocol = AUDIO_CSCP_StreamingProtocol,
.InterfaceStrIndex = NO_DESCRIPTOR
},
.Audio_StreamInterface_SPC =
{
.Header = {.Size = sizeof(USB_MIDI_Descriptor_AudioInterface_AS_t), .Type = DTYPE_CSInterface},
.Subtype = AUDIO_DSUBTYPE_CSInterface_General,
.AudioSpecification = VERSION_BCD(1,0,0),
.TotalLength = (sizeof(USB_Descriptor_Configuration_t) -
offsetof(USB_Descriptor_Configuration_t, Audio_StreamInterface_SPC))
},
.MIDI_In_Jack_Emb =
{
.Header = {.Size = sizeof(USB_MIDI_Descriptor_InputJack_t), .Type = DTYPE_CSInterface},
.Subtype = AUDIO_DSUBTYPE_CSInterface_InputTerminal,
.JackType = MIDI_JACKTYPE_Embedded,
.JackID = 0x01,
.JackStrIndex = NO_DESCRIPTOR
},
.MIDI_In_Jack_Ext =
{
.Header = {.Size = sizeof(USB_MIDI_Descriptor_InputJack_t), .Type = DTYPE_CSInterface},
.Subtype = AUDIO_DSUBTYPE_CSInterface_InputTerminal,
.JackType = MIDI_JACKTYPE_External,
.JackID = 0x02,
.JackStrIndex = NO_DESCRIPTOR
},
.MIDI_Out_Jack_Emb =
{
.Header = {.Size = sizeof(USB_MIDI_Descriptor_OutputJack_t), .Type = DTYPE_CSInterface},
.Subtype = AUDIO_DSUBTYPE_CSInterface_OutputTerminal,
.JackType = MIDI_JACKTYPE_Embedded,
.JackID = 0x03,
.NumberOfPins = 1,
.SourceJackID = {0x02},
.SourcePinID = {0x01},
.JackStrIndex = NO_DESCRIPTOR
},
.MIDI_Out_Jack_Ext =
{
.Header = {.Size = sizeof(USB_MIDI_Descriptor_OutputJack_t), .Type = DTYPE_CSInterface},
.Subtype = AUDIO_DSUBTYPE_CSInterface_OutputTerminal,
.JackType = MIDI_JACKTYPE_External,
.JackID = 0x04,
.NumberOfPins = 1,
.SourceJackID = {0x01},
.SourcePinID = {0x01},
.JackStrIndex = NO_DESCRIPTOR
},
.MIDI_In_Jack_Endpoint =
{
.Endpoint =
{
.Header = {.Size = sizeof(USB_Audio_Descriptor_StreamEndpoint_Std_t), .Type = DTYPE_Endpoint},
.EndpointAddress = MIDI_STREAM_OUT_EPADDR,
.Attributes = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
.EndpointSize = MIDI_STREAM_EPSIZE,
.PollingIntervalMS = 0x05
},
.Refresh = 0,
.SyncEndpointNumber = 0
},
.MIDI_In_Jack_Endpoint_SPC =
{
.Header = {.Size = sizeof(USB_MIDI_Descriptor_Jack_Endpoint_t), .Type = DTYPE_CSEndpoint},
.Subtype = AUDIO_DSUBTYPE_CSEndpoint_General,
.TotalEmbeddedJacks = 0x01,
.AssociatedJackID = {0x01}
},
.MIDI_Out_Jack_Endpoint =
{
.Endpoint =
{
.Header = {.Size = sizeof(USB_Audio_Descriptor_StreamEndpoint_Std_t), .Type = DTYPE_Endpoint},
.EndpointAddress = MIDI_STREAM_IN_EPADDR,
.Attributes = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
.EndpointSize = MIDI_STREAM_EPSIZE,
.PollingIntervalMS = 0x05
},
.Refresh = 0,
.SyncEndpointNumber = 0
},
.MIDI_Out_Jack_Endpoint_SPC =
{
.Header = {.Size = sizeof(USB_MIDI_Descriptor_Jack_Endpoint_t), .Type = DTYPE_CSEndpoint},
.Subtype = AUDIO_DSUBTYPE_CSEndpoint_General,
.TotalEmbeddedJacks = 0x01,
.AssociatedJackID = {0x03}
}
};
/** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests
* the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate
* via the language ID table available at USB.org what languages the device supports for its string descriptors.
*/
const USB_Descriptor_String_t PROGMEM LanguageString = USB_STRING_DESCRIPTOR_ARRAY(LANGUAGE_ID_ENG);
/** Manufacturer descriptor string. This is a Unicode string containing the manufacturer's details in human readable
* form, and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
* Descriptor.
*/
const USB_Descriptor_String_t PROGMEM ManufacturerString = USB_STRING_DESCRIPTOR(L"Dean Camera");
/** Product descriptor string. This is a Unicode string containing the product's details in human readable form,
* and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
* Descriptor.
*/
const USB_Descriptor_String_t PROGMEM ProductString = USB_STRING_DESCRIPTOR(L"LUFA MIDI Demo");
/** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
* documentation) by the application code so that the address and size of a requested descriptor can be given
* to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function
* is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
* USB host.
*/
uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
const uint8_t wIndex,
const void** const DescriptorAddress)
{
const uint8_t DescriptorType = (wValue >> 8);
const uint8_t DescriptorNumber = (wValue & 0xFF);
const void* Address = NULL;
uint16_t Size = NO_DESCRIPTOR;
switch (DescriptorType)
{
case DTYPE_Device:
Address = &DeviceDescriptor;
Size = sizeof(USB_Descriptor_Device_t);
break;
case DTYPE_Configuration:
Address = &ConfigurationDescriptor;
Size = sizeof(USB_Descriptor_Configuration_t);
break;
case DTYPE_String:
switch (DescriptorNumber)
{
case STRING_ID_Language:
Address = &LanguageString;
Size = pgm_read_byte(&LanguageString.Header.Size);
break;
case STRING_ID_Manufacturer:
Address = &ManufacturerString;
Size = pgm_read_byte(&ManufacturerString.Header.Size);
break;
case STRING_ID_Product:
Address = &ProductString;
Size = pgm_read_byte(&ProductString.Header.Size);
break;
}
break;
}
*DescriptorAddress = Address;
return Size;
}

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/*
LUFA Library
Copyright (C) Dean Camera, 2014.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2014 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 Descriptors.c.
*/
#ifndef _DESCRIPTORS_H_
#define _DESCRIPTORS_H_
/* Includes: */
#include <LUFA/Drivers/USB/USB.h>
#include <avr/pgmspace.h>
#include "Config/AppConfig.h"
/* Macros: */
/** Endpoint address of the MIDI streaming data IN endpoint, for device-to-host data transfers. */
#define MIDI_STREAM_IN_EPADDR (ENDPOINT_DIR_IN | 2)
/** Endpoint address of the MIDI streaming data OUT endpoint, for host-to-device data transfers. */
#define MIDI_STREAM_OUT_EPADDR (ENDPOINT_DIR_OUT | 1)
/** Endpoint size in bytes of the Audio isochronous streaming data IN and OUT endpoints. */
#define MIDI_STREAM_EPSIZE 64
/* Type Defines: */
/** Type define for the device configuration descriptor structure. This must be defined in the
* application code, as the configuration descriptor contains several sub-descriptors which
* vary between devices, and which describe the device's usage to the host.
*/
typedef struct
{
USB_Descriptor_Configuration_Header_t Config;
// MIDI Audio Control Interface
USB_Descriptor_Interface_t Audio_ControlInterface;
USB_Audio_Descriptor_Interface_AC_t Audio_ControlInterface_SPC;
// MIDI Audio Streaming Interface
USB_Descriptor_Interface_t Audio_StreamInterface;
USB_MIDI_Descriptor_AudioInterface_AS_t Audio_StreamInterface_SPC;
USB_MIDI_Descriptor_InputJack_t MIDI_In_Jack_Emb;
USB_MIDI_Descriptor_InputJack_t MIDI_In_Jack_Ext;
USB_MIDI_Descriptor_OutputJack_t MIDI_Out_Jack_Emb;
USB_MIDI_Descriptor_OutputJack_t MIDI_Out_Jack_Ext;
USB_Audio_Descriptor_StreamEndpoint_Std_t MIDI_In_Jack_Endpoint;
USB_MIDI_Descriptor_Jack_Endpoint_t MIDI_In_Jack_Endpoint_SPC;
USB_Audio_Descriptor_StreamEndpoint_Std_t MIDI_Out_Jack_Endpoint;
USB_MIDI_Descriptor_Jack_Endpoint_t MIDI_Out_Jack_Endpoint_SPC;
} USB_Descriptor_Configuration_t;
/** Enum for the device interface descriptor IDs within the device. Each interface descriptor
* should have a unique ID index associated with it, which can be used to refer to the
* interface from other descriptors.
*/
enum InterfaceDescriptors_t
{
INTERFACE_ID_AudioControl = 0, /**< Audio control interface descriptor ID */
INTERFACE_ID_AudioStream = 1, /**< Audio stream interface descriptor ID */
};
/** Enum for the device string descriptor IDs within the device. Each string descriptor should
* have a unique ID index associated with it, which can be used to refer to the string from
* other descriptors.
*/
enum StringDescriptors_t
{
STRING_ID_Language = 0, /**< Supported Languages string descriptor ID (must be zero) */
STRING_ID_Manufacturer = 1, /**< Manufacturer string ID */
STRING_ID_Product = 2, /**< Product string ID */
};
/* Function Prototypes: */
uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
const uint8_t wIndex,
const void** const DescriptorAddress)
ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
#endif

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/*
LUFA Library
Copyright (C) Dean Camera, 2014.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2014 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);
}

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/*
LUFA Library
Copyright (C) Dean Camera, 2014.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2014 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

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/** \file
*
* This file contains special DoxyGen information for the generation of the main page and other special
* documentation pages. It is not a project source file.
*/
/** \mainpage MIDI Tone Generator Project
*
* \section Sec_Compat Project Compatibility:
*
* The following list indicates what microcontrollers are compatible with this project.
*
* \li Series 7 USB AVRs (AT90USBxxx7)
* \li Series 6 USB AVRs (AT90USBxxx6)
* \li Series 4 USB AVRs (ATMEGAxxU4)
*
* \section Sec_Info USB Information:
*
* The following table gives a rundown of the USB utilization of this project.
*
* <table>
* <tr>
* <td><b>USB Mode:</b></td>
* <td>Device</td>
* </tr>
* <tr>
* <td><b>USB Class:</b></td>
* <td>Audio Class</td>
* </tr>
* <tr>
* <td><b>USB Subclass:</b></td>
* <td>Standard Audio Device</td>
* </tr>
* <tr>
* <td><b>Relevant Standards:</b></td>
* <td>USBIF Audio Class Specification \n
* USB-MIDI Audio Class Extension Specification \n
* General MIDI Specification</td>
* </tr>
* <tr>
* <td><b>Supported USB Speeds:</b></td>
* <td>Full Speed Mode</td>
* </tr>
* </table>
*
* \section Sec_Description Project Description:
*
* MIDI note synthesiser project. This project implements a basic DDS frequency synthesiser, capable of producing 8-bit PWM sine
* waves of variable frequency. When attached to a USB host, this project will allow for multiple MIDI notes to be synthesised into
* audiable sound via PWM, using the notes sent to MIDI channel 1.
*
* Outgoing audio will output in 8-bit PWM onto the timer 3 output compare channel A. Decouple the audio output with a capacitor
* and attach to a speaker to hear the audio.
*
* \section Sec_Options Project Options
*
* The following defines can be found in this project, which can control the project behaviour when defined, or changed in value.
*
* <table>
* <tr>
* <th><b>Define Name:</b></th>
* <th><b>Location:</b></th>
* <th><b>Description:</b></th>
* </tr>
* <tr>
* <td>MAX_SIMULTANEOUS_NOTES</td>
* <td>AppConfig.h</td>
* <td>Sets the maximum number of MIDI notes that can be generated simultaneously. More notes require more processing time,
* and thus a value that is too high will cause audiable sound distortion due to insufficient CPU time.</td>
* </tr>
* </table>
*/

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<asf xmlversion="1.0">
<project caption="MIDI Tone Generator" id="lufa.projects.midi_tone_gen.avr8">
<require idref="lufa.projects.midi_tone_gen"/>
<require idref="lufa.boards.dummy.avr8"/>
<generator value="as5_8"/>
<device-support value="at90usb1287"/>
<config name="lufa.drivers.board.name" value="usbkey"/>
<build type="define" name="F_CPU" value="8000000UL"/>
<build type="define" name="F_USB" value="8000000UL"/>
</project>
<module type="application" id="lufa.projects.midi_tone_gen" caption="MIDI Tone Generator">
<info type="description" value="summary">
MIDI tone generator project.
</info>
<info type="gui-flag" value="move-to-root"/>
<info type="keyword" value="Technology">
<keyword value="Class Driver APIs"/>
<keyword value="USB Device"/>
<keyword value="MIDI Class"/>
</info>
<device-support-alias value="lufa_avr8"/>
<device-support-alias value="lufa_xmega"/>
<device-support-alias value="lufa_uc3"/>
<build type="distribute" subtype="user-file" value="doxyfile"/>
<build type="distribute" subtype="user-file" value="MIDIToneGenerator.txt"/>
<build type="c-source" value="MIDIToneGenerator.c"/>
<build type="c-source" value="Descriptors.c"/>
<build type="header-file" value="MIDIToneGenerator.h"/>
<build type="header-file" value="Descriptors.h"/>
<build type="module-config" subtype="path" value="Config"/>
<build type="module-config" subtype="required-header-file" value="AppConfig.h"/>
<build type="header-file" value="Config/AppConfig.h"/>
<build type="header-file" value="Config/LUFAConfig.h"/>
<require idref="lufa.common"/>
<require idref="lufa.platform"/>
<require idref="lufa.drivers.usb"/>
<require idref="lufa.drivers.board"/>
<require idref="lufa.drivers.board.leds"/>
</module>
</asf>

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#
# LUFA Library
# Copyright (C) Dean Camera, 2014.
#
# dean [at] fourwalledcubicle [dot] com
# www.lufa-lib.org
#
# --------------------------------------
# LUFA Project Makefile.
# --------------------------------------
# Run "make help" for target help.
MCU = at90usb1287
ARCH = AVR8
BOARD = USBKEY
F_CPU = 8000000
F_USB = $(F_CPU)
OPTIMIZATION = s
TARGET = MIDIToneGenerator
SRC = $(TARGET).c Descriptors.c $(LUFA_SRC_USB) $(LUFA_SRC_USBCLASS)
LUFA_PATH = ../../LUFA
CC_FLAGS = -DUSE_LUFA_CONFIG_HEADER -IConfig/
LD_FLAGS =
# Default target
all:
# Include LUFA build script makefiles
include $(LUFA_PATH)/Build/lufa_core.mk
include $(LUFA_PATH)/Build/lufa_sources.mk
include $(LUFA_PATH)/Build/lufa_build.mk
include $(LUFA_PATH)/Build/lufa_cppcheck.mk
include $(LUFA_PATH)/Build/lufa_doxygen.mk
include $(LUFA_PATH)/Build/lufa_dfu.mk
include $(LUFA_PATH)/Build/lufa_hid.mk
include $(LUFA_PATH)/Build/lufa_avrdude.mk
include $(LUFA_PATH)/Build/lufa_atprogram.mk