Skip to content
GitLab
Projects
Groups
Snippets
/
Help
Help
Support
Community forum
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in
Toggle navigation
Menu
Open sidebar
Erik Strand
lufa
Commits
c58c53db
Commit
c58c53db
authored
Mar 23, 2010
by
Dean Camera
Browse files
Added incomplete MIDIToneGenerator project.
parent
49b09a20
Changes
9
Expand all
Hide whitespace changes
Inline
Side-by-side
Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothACLPackets.h
View file @
c58c53db
...
...
@@ -56,7 +56,6 @@
#define BLUETOOTH_CONFIGURATION_SUCCESSFUL 0x0000
#define BLUETOOTH_CONFIGURATION_REJECTED 0x0002
#define BLUETOOTH_CONFIGURATION_UNKNOWNOPTIONS 0x0003
/* Type Defines: */
typedef
struct
...
...
Demos/Host/Incomplete/BluetoothHost/makefile
View file @
c58c53db
...
...
@@ -60,7 +60,7 @@
# MCU name
MCU
=
at90usb
128
7
MCU
=
at90usb
64
7
# Target board (see library "Board Types" documentation, NONE for projects not requiring
...
...
LUFA.pnproj
View file @
c58c53db
This diff is collapsed.
Click to expand it.
LUFA/ManPages/ChangeLog.txt
View file @
c58c53db
...
...
@@ -9,7 +9,7 @@
* \section Sec_ChangeLogXXXXXX Version XXXXXX
*
* <b>New:</b>
* -
(None)
* -
Added incomplete MIDIToneGenerator project
*
* <b>Changed:</b>
* - AVRISP programmer project now has a more robust timeout system, allowing for an increse of the software USART speed
...
...
Projects/Incomplete/MIDIToneGenerator/Descriptors.c
0 → 100644
View file @
c58c53db
/*
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
*
* 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
=
0x00
,
.
SubClass
=
0x00
,
.
Protocol
=
0x00
,
.
Endpoint0Size
=
FIXED_CONTROL_ENDPOINT_SIZE
,
.
VendorID
=
0x03EB
,
.
ProductID
=
0x2048
,
.
ReleaseNumber
=
0x0000
,
.
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
=
0x01
,
.
SubClass
=
0x01
,
.
Protocol
=
0x00
,
.
InterfaceStrIndex
=
NO_DESCRIPTOR
},
.
Audio_ControlInterface_SPC
=
{
.
Header
=
{.
Size
=
sizeof
(
USB_Audio_Interface_AC_t
),
.
Type
=
DTYPE_AudioInterface
},
.
Subtype
=
DSUBTYPE_Header
,
.
ACSpecification
=
VERSION_BCD
(
01
.
00
),
.
TotalLength
=
sizeof
(
USB_Audio_Interface_AC_t
),
.
InCollection
=
1
,
.
InterfaceNumbers
=
{
1
},
},
.
Audio_StreamInterface
=
{
.
Header
=
{.
Size
=
sizeof
(
USB_Descriptor_Interface_t
),
.
Type
=
DTYPE_Interface
},
.
InterfaceNumber
=
1
,
.
AlternateSetting
=
0
,
.
TotalEndpoints
=
2
,
.
Class
=
0x01
,
.
SubClass
=
0x03
,
.
Protocol
=
0x00
,
.
InterfaceStrIndex
=
NO_DESCRIPTOR
},
.
Audio_StreamInterface_SPC
=
{
.
Header
=
{.
Size
=
sizeof
(
USB_MIDI_AudioInterface_AS_t
),
.
Type
=
DTYPE_AudioInterface
},
.
Subtype
=
DSUBTYPE_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_In_Jack_t
),
.
Type
=
DTYPE_AudioInterface
},
.
Subtype
=
DSUBTYPE_InputJack
,
.
JackType
=
MIDI_JACKTYPE_EMBEDDED
,
.
JackID
=
0x01
,
.
JackStrIndex
=
NO_DESCRIPTOR
},
.
MIDI_In_Jack_Ext
=
{
.
Header
=
{.
Size
=
sizeof
(
USB_MIDI_In_Jack_t
),
.
Type
=
DTYPE_AudioInterface
},
.
Subtype
=
DSUBTYPE_InputJack
,
.
JackType
=
MIDI_JACKTYPE_EXTERNAL
,
.
JackID
=
0x02
,
.
JackStrIndex
=
NO_DESCRIPTOR
},
.
MIDI_Out_Jack_Emb
=
{
.
Header
=
{.
Size
=
sizeof
(
USB_MIDI_Out_Jack_t
),
.
Type
=
DTYPE_AudioInterface
},
.
Subtype
=
DSUBTYPE_OutputJack
,
.
JackType
=
MIDI_JACKTYPE_EMBEDDED
,
.
JackID
=
0x03
,
.
NumberOfPins
=
1
,
.
SourceJackID
=
{
0x02
},
.
SourcePinID
=
{
0x01
},
.
JackStrIndex
=
NO_DESCRIPTOR
},
.
MIDI_Out_Jack_Ext
=
{
.
Header
=
{.
Size
=
sizeof
(
USB_MIDI_Out_Jack_t
),
.
Type
=
DTYPE_AudioInterface
},
.
Subtype
=
DSUBTYPE_OutputJack
,
.
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_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
=
0
},
.
Refresh
=
0
,
.
SyncEndpointNumber
=
0
},
.
MIDI_In_Jack_Endpoint_SPC
=
{
.
Header
=
{.
Size
=
sizeof
(
USB_MIDI_Jack_Endpoint_t
),
.
Type
=
DTYPE_AudioEndpoint
},
.
Subtype
=
DSUBTYPE_General
,
.
TotalEmbeddedJacks
=
0x01
,
.
AssociatedJackID
=
{
0x01
}
},
.
MIDI_Out_Jack_Endpoint
=
{
.
Endpoint
=
{
.
Header
=
{.
Size
=
sizeof
(
USB_Audio_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
=
0
},
.
Refresh
=
0
,
.
SyncEndpointNumber
=
0
},
.
MIDI_Out_Jack_Endpoint_SPC
=
{
.
Header
=
{.
Size
=
sizeof
(
USB_MIDI_Jack_Endpoint_t
),
.
Type
=
DTYPE_AudioEndpoint
},
.
Subtype
=
DSUBTYPE_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
,
void
**
const
DescriptorAddress
)
{
const
uint8_t
DescriptorType
=
(
wValue
>>
8
);
const
uint8_t
DescriptorNumber
=
(
wValue
&
0xFF
);
void
*
Address
=
NULL
;
uint16_t
Size
=
NO_DESCRIPTOR
;
switch
(
DescriptorType
)
{
case
DTYPE_Device
:
Address
=
(
void
*
)
&
DeviceDescriptor
;
Size
=
sizeof
(
USB_Descriptor_Device_t
);
break
;
case
DTYPE_Configuration
:
Address
=
(
void
*
)
&
ConfigurationDescriptor
;
Size
=
sizeof
(
USB_Descriptor_Configuration_t
);
break
;
case
DTYPE_String
:
switch
(
DescriptorNumber
)
{
case
0x00
:
Address
=
(
void
*
)
&
LanguageString
;
Size
=
pgm_read_byte
(
&
LanguageString
.
Header
.
Size
);
break
;
case
0x01
:
Address
=
(
void
*
)
&
ManufacturerString
;
Size
=
pgm_read_byte
(
&
ManufacturerString
.
Header
.
Size
);
break
;
case
0x02
:
Address
=
(
void
*
)
&
ProductString
;
Size
=
pgm_read_byte
(
&
ProductString
.
Header
.
Size
);
break
;
}
break
;
}
*
DescriptorAddress
=
Address
;
return
Size
;
}
Projects/Incomplete/MIDIToneGenerator/Descriptors.h
0 → 100644
View file @
c58c53db
/*
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
*
* Header file for Descriptors.c.
*/
#ifndef _DESCRIPTORS_H_
#define _DESCRIPTORS_H_
/* Includes: */
#include
<LUFA/Drivers/USB/USB.h>
#include
<LUFA/Drivers/USB/Class/MIDI.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_Interface_AC_t
Audio_ControlInterface_SPC
;
USB_Descriptor_Interface_t
Audio_StreamInterface
;
USB_MIDI_AudioInterface_AS_t
Audio_StreamInterface_SPC
;
USB_MIDI_In_Jack_t
MIDI_In_Jack_Emb
;
USB_MIDI_In_Jack_t
MIDI_In_Jack_Ext
;
USB_MIDI_Out_Jack_t
MIDI_Out_Jack_Emb
;
USB_MIDI_Out_Jack_t
MIDI_Out_Jack_Ext
;
USB_Audio_StreamEndpoint_Std_t
MIDI_In_Jack_Endpoint
;
USB_MIDI_Jack_Endpoint_t
MIDI_In_Jack_Endpoint_SPC
;
USB_Audio_StreamEndpoint_Std_t
MIDI_Out_Jack_Endpoint
;
USB_MIDI_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
,
void
**
const
DescriptorAddress
)
ATTR_WARN_UNUSED_RESULT
ATTR_NON_NULL_PTR_ARG
(
3
);
#endif
Projects/Incomplete/MIDIToneGenerator/MIDIToneGenerator.c
0 → 100644
View file @
c58c53db
/*
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
,
},
};
const
uint8_t
SineTable
[]
PROGMEM
=
{
0x80
,
0x83
,
0x86
,
0x89
,
0x8c
,
0x8f
,
0x92
,
0x95
,
0x98
,
0x9c
,
0x9f
,
0xa2
,
0xa5
,
0xa8
,
0xab
,
0xae
,
0xb0
,
0xb3
,
0xb6
,
0xb9
,
0xbc
,
0xbf
,
0xc1
,
0xc4
,
0xc7
,
0xc9
,
0xcc
,
0xce
,
0xd1
,
0xd3
,
0xd5
,
0xd8
,
0xda
,
0xdc
,
0xde
,
0xe0
,
0xe2
,
0xe4
,
0xe6
,
0xe8
,
0xea
,
0xec
,
0xed
,
0xef
,
0xf0
,
0xf2
,
0xf3
,
0xf5
,
0xf6
,
0xf7
,
0xf8
,
0xf9
,
0xfa
,
0xfb
,
0xfc
,
0xfc
,
0xfd
,
0xfe
,
0xfe
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xff
,
0xfe
,
0xfe
,
0xfd
,
0xfc
,
0xfc
,
0xfb
,
0xfa
,
0xf9
,
0xf8
,
0xf7
,
0xf6
,
0xf5
,
0xf3
,
0xf2
,
0xf0
,
0xef
,
0xed
,
0xec
,
0xea
,
0xe8
,
0xe6
,
0xe4
,
0xe2
,
0xe0
,
0xde
,
0xdc
,
0xda
,
0xd8
,
0xd5
,
0xd3
,
0xd1
,
0xce
,
0xcc
,
0xc9
,
0xc7
,
0xc4
,
0xc1
,
0xbf
,
0xbc
,
0xb9
,
0xb6
,
0xb3
,
0xb0
,
0xae
,
0xab
,
0xa8
,
0xa5
,
0xa2
,
0x9f
,
0x9c
,
0x98
,
0x95
,
0x92
,
0x8f
,
0x8c
,
0x89
,
0x86
,
0x83
,
0x80
,
0x7c
,
0x79
,
0x76
,
0x73
,
0x70
,
0x6d
,
0x6a
,
0x67
,
0x63
,
0x60
,
0x5d
,
0x5a
,
0x57
,
0x54
,
0x51
,
0x4f
,
0x4c
,
0x49
,
0x46
,
0x43
,
0x40
,
0x3e
,
0x3b
,
0x38
,
0x36
,
0x33
,
0x31
,
0x2e
,
0x2c
,
0x2a
,
0x27
,
0x25
,
0x23
,
0x21
,
0x1f
,
0x1d
,
0x1b
,
0x19
,
0x17
,
0x15
,
0x13
,
0x12
,
0x10
,
0x0f
,
0x0d
,
0x0c
,
0x0a
,
0x09
,
0x08
,
0x07
,
0x06
,
0x05
,
0x04
,
0x03
,
0x03
,
0x02
,
0x01
,
0x01
,
0x00
,
0x00
,
0x00
,
0x00
,
0x00
,
0x00
,
0x00
,
0x00
,
0x00
,
0x00
,
0x00
,
0x01
,
0x01
,
0x02
,
0x03
,
0x03
,
0x04
,
0x05
,
0x06
,
0x07
,
0x08
,
0x09
,
0x0a
,
0x0c
,
0x0d
,
0x0f
,
0x10
,
0x12
,
0x13
,
0x15
,
0x17
,
0x19
,
0x1b
,
0x1d
,
0x1f
,
0x21
,
0x23
,
0x25
,
0x27
,
0x2a
,
0x2c
,
0x2e
,
0x31
,
0x33
,
0x36
,
0x38
,
0x3b
,
0x3e
,
0x40
,
0x43
,
0x46
,
0x49
,
0x4c
,
0x4f
,
0x51
,
0x54
,
0x57
,
0x5a
,
0x5d
,
0x60
,
0x63
,
0x67
,
0x6a
,
0x6d
,
0x70
,
0x73
,
0x76
,
0x79
,
0x7c
};
struct
{
uint8_t
Pitch
;
uint8_t
Velocity
;
uint8_t
CurrentPos
;
uint8_t
ElapsedTicks
;
}
ChannelStates
[
10
];
/** 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
);
for
(;;)
{
MIDI_EventPacket_t
ReceivedMIDIEvent
;
if
(
MIDI_Device_ReceiveEventPacket
(
&
Keyboard_MIDI_Interface
,
&
ReceivedMIDIEvent
))
{
if
(
ReceivedMIDIEvent
.
Command
==
(
MIDI_COMMAND_NOTE_ON
>>
4
))
{
ChannelStates
[
ReceivedMIDIEvent
.
Data1
&
0x0F
].
Pitch
=
ReceivedMIDIEvent
.
Data2
;
ChannelStates
[
ReceivedMIDIEvent
.
Data1
&
0x0F
].
Velocity
=
ReceivedMIDIEvent
.
Data3
;
LEDs_SetAllLEDs
(
LEDS_LED1
);
}
else
if
(
ReceivedMIDIEvent
.
Command
==
(
MIDI_COMMAND_NOTE_OFF
>>
4
))
{
ChannelStates
[
ReceivedMIDIEvent
.
Data1
&
0x0F
].
Velocity
=
0
;
LEDs_SetAllLEDs
(
LEDS_NO_LEDS
);
}
}
/* Check if the sample reload timer period has elapsed, and that the USB bus is ready for a new sample */
if
(
TIFR0
&
(
1
<<
OCF0A
))
{
/* Clear the sample reload timer */
TIFR0
|=
(
1
<<
OCF0A
);
uint8_t
OutputSample
=
0
;
/* Loop through the channels (excluding percussion channel 10) and generate next sample */
for
(
uint8_t
Channel
=
0
;
Channel
<
9
;
Channel
++
)
{
/* Channel only contributes if it is not muted */
if
(
ChannelStates
[
Channel
].
Velocity
)
{
/* Fetch the current sample from the sine lookup table */
uint8_t
TableValue
=
pgm_read_byte
(
&
SineTable
[
ChannelStates
[
Channel
].
CurrentPos
]);
/* Scale sample value by the velocity of the channel */
TableValue
=
((
uint16_t
)
TableValue
<<
6
)
/
ChannelStates
[
Channel
].
Velocity
;
/* Add the sample to the output waveform */
OutputSample
+=
TableValue
;
}
/* Calculate next sample table position for this channel */
ChannelStates
[
Channel
].
CurrentPos
+=
ChannelStates
[
Channel
].
Pitch
;
}
/* Output the sample to the PWM timer */
OCR3A
=
OutputSample
;
}
MIDI_Device_USBTask
(
&
Keyboard_MIDI_Interface
);
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 */