Commit 857a8267 authored by Dean Camera's avatar Dean Camera
Browse files

Readd incomplete MIDIToneGenerator project, which can now correctly generate...

Readd incomplete MIDIToneGenerator project, which can now correctly generate up to three simultaneous notes from MIDI channel 0.
parent 423d4018
......@@ -319,7 +319,7 @@ static void WriteNextResponseByte(const uint8_t Response)
}
}
/* Write the next byte to the OUT endpoint */
/* Write the next byte to the IN endpoint */
Endpoint_Write_Byte(Response);
}
......
This diff is collapsed.
/*
LUFA Library
Copyright (C) Dean Camera, 2010.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2010 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
*
* 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.
*/
USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
{
.Header = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device},
.USBSpecification = VERSION_BCD(01.10),
.Class = USB_CSCP_NoDeviceClass,
.SubClass = USB_CSCP_NoDeviceSubclass,
.Protocol = USB_CSCP_NoDeviceProtocol,
.Endpoint0Size = FIXED_CONTROL_ENDPOINT_SIZE,
.VendorID = 0x03EB,
.ProductID = 0x2048,
.ReleaseNumber = VERSION_BCD(00.01),
.ManufacturerStrIndex = 0x01,
.ProductStrIndex = 0x02,
.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.
*/
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_BUSPOWERED | USB_CONFIG_ATTR_SELFPOWERED),
.MaxPowerConsumption = USB_CONFIG_POWER_MA(100)
},
.Audio_ControlInterface =
{
.Header = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
.InterfaceNumber = 0,
.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(01.00),
.TotalLength = sizeof(USB_Audio_Descriptor_Interface_AC_t),
.InCollection = 1,
.InterfaceNumber = 1,
},
.Audio_StreamInterface =
{
.Header = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
.InterfaceNumber = 1,
.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(01.00),
.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 = (ENDPOINT_DESCRIPTOR_DIR_OUT | MIDI_STREAM_OUT_EPNUM),
.Attributes = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
.EndpointSize = MIDI_STREAM_EPSIZE,
.PollingIntervalMS = 0x01
},
.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 = (ENDPOINT_DESCRIPTOR_DIR_IN | MIDI_STREAM_IN_EPNUM),
.Attributes = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
.EndpointSize = MIDI_STREAM_EPSIZE,
.PollingIntervalMS = 0x01
},
.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.
*/
USB_Descriptor_String_t PROGMEM LanguageString =
{
.Header = {.Size = USB_STRING_LEN(1), .Type = DTYPE_String},
.UnicodeString = {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.
*/
USB_Descriptor_String_t PROGMEM ManufacturerString =
{
.Header = {.Size = USB_STRING_LEN(11), .Type = DTYPE_String},
.UnicodeString = 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.
*/
USB_Descriptor_String_t PROGMEM ProductString =
{
.Header = {.Size = USB_STRING_LEN(14), .Type = DTYPE_String},
.UnicodeString = 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 0x00:
Address = &LanguageString;
Size = pgm_read_byte(&LanguageString.Header.Size);
break;
case 0x01:
Address = &ManufacturerString;
Size = pgm_read_byte(&ManufacturerString.Header.Size);
break;
case 0x02:
Address = &ProductString;
Size = pgm_read_byte(&ProductString.Header.Size);
break;
}
break;
}
*DescriptorAddress = Address;
return Size;
}
/*
LUFA Library
Copyright (C) Dean Camera, 2010.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2010 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
*
* Header file for Descriptors.c.
*/
#ifndef _DESCRIPTORS_H_
#define _DESCRIPTORS_H_
/* Includes: */
#include <LUFA/Drivers/USB/USB.h>
#include <avr/pgmspace.h>
/* Macros: */
/** Endpoint number of the MIDI streaming data IN endpoint, for device-to-host data transfers. */
#define MIDI_STREAM_IN_EPNUM 2
/** Endpoint number of the MIDI streaming data OUT endpoint, for host-to-device data transfers. */
#define MIDI_STREAM_OUT_EPNUM 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;
USB_Descriptor_Interface_t Audio_ControlInterface;
USB_Audio_Descriptor_Interface_AC_t Audio_ControlInterface_SPC;
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;
/* 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
/*
LUFA Library
Copyright (C) Dean Camera, 2010.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2010 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 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 = 1,
.DataINEndpointNumber = MIDI_STREAM_IN_EPNUM,
.DataINEndpointSize = MIDI_STREAM_EPSIZE,
.DataINEndpointDoubleBank = false,
.DataOUTEndpointNumber = MIDI_STREAM_OUT_EPNUM,
.DataOUTEndpointSize = MIDI_STREAM_EPSIZE,
.DataOUTEndpointDoubleBank = false,
},
};
/** 8-bit 256 entry Sine Wave lookup table */
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 */
struct
{
uint8_t Pitch;
uint32_t TableIncrement;
uint32_t TablePosition;
} NoteData[3];
uint8_t PhaseCounter;
/** 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);
sei();
for (;;)
{
MIDI_EventPacket_t ReceivedMIDIEvent;
if (MIDI_Device_ReceiveEventPacket(&Keyboard_MIDI_Interface, &ReceivedMIDIEvent))
{
if ((ReceivedMIDIEvent.Command == (MIDI_COMMAND_NOTE_ON >> 4)) && ((ReceivedMIDIEvent.Data1 & 0x0F) == 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++)
{
if (!(NoteData[i].Pitch))
{
NoteData[i].Pitch = ReceivedMIDIEvent.Data2;
NoteData[i].TableIncrement = (uint32_t)(BASE_INCREMENT * SCALE_FACTOR) +
((uint32_t)(BASE_INCREMENT * NOTE_OCTIVE_RATIO * SCALE_FACTOR) *
(ReceivedMIDIEvent.Data2 - BASE_PITCH_INDEX));
NoteData[i].TablePosition = 0;
break;
}
}
/* Turn on indicator LED to indicate note generation activity */
LEDs_SetAllLEDs(LEDS_LED1);
}
else if ((ReceivedMIDIEvent.Command == (MIDI_COMMAND_NOTE_OFF >> 4)) && ((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;
FoundActiveNote = true;
break;
}
}
/* 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++)
{
if (NoteData[i].Pitch)
{
MixedSample += SineTable[NoteData[i].TablePosition >> 24];
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)
{
/* Disable watchdog if enabled by bootloader/fuses */
MCUSR &= ~(1 << WDRF);
wdt_disable();
/* Disable clock division */