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Add MIDI class driver, update MIDI device demo to use the new USB class driver. All device demos/projects have now been converted to the new library class drivers, although documentation is yet to be completed.

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pull/1469/head
Dean Camera 16 years ago
parent d1e5266036
commit 74b7c07e96
13 changed files with 613 additions and 785 deletions
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238
Demos/Device/AudioInput/Descriptors.h
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@ -38,105 +38,11 @@
/* Includes: */ /* Includes: */
#include <LUFA/Drivers/USB/USB.h> #include <LUFA/Drivers/USB/USB.h>
#include <LUFA/Drivers/USB/Class/Device/Audio.h>
#include <avr/pgmspace.h> #include <avr/pgmspace.h>
/* Macros: */ /* Macros: */
/** Descriptor header constant to indicate a Audio class interface descriptor. */
#define DTYPE_AudioInterface 0x24
/** Descriptor header constant to indicate a Audio class endpoint descriptor. */
#define DTYPE_AudioEndpoint 0x25
/** Audio class descriptor subtype value for a Audio class specific header descriptor. */
#define DSUBTYPE_Header 0x01
/** Audio class descriptor subtype value for an Output Terminal Audio class specific descriptor. */
#define DSUBTYPE_InputTerminal 0x02
/** Audio class descriptor subtype value for an Input Terminal Audio class specific descriptor. */
#define DSUBTYPE_OutputTerminal 0x03
/** Audio class descriptor subtype value for a Feature Unit Audio class specific descriptor. */
#define DSUBTYPE_FeatureUnit 0x06
/** Audio class descriptor subtype value for a general Audio class specific descriptor. */
#define DSUBTYPE_General 0x01
/** Audio class descriptor subtype value for an Audio class specific descriptor indicating the format of an audio stream. */
#define DSUBTYPE_Format 0x02
//@{
/** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
#define CHANNEL_LEFT_FRONT (1 << 0)
#define CHANNEL_RIGHT_FRONT (1 << 1)
#define CHANNEL_CENTER_FRONT (1 << 2)
#define CHANNEL_LOW_FREQ_ENHANCE (1 << 3)
#define CHANNEL_LEFT_SURROUND (1 << 4)
#define CHANNEL_RIGHT_SURROUND (1 << 5)
#define CHANNEL_LEFT_OF_CENTER (1 << 6)
#define CHANNEL_RIGHT_OF_CENTER (1 << 7)
#define CHANNEL_SURROUND (1 << 8)
#define CHANNEL_SIDE_LEFT (1 << 9)
#define CHANNEL_SIDE_RIGHT (1 << 10)
#define CHANNEL_TOP (1 << 11)
//@}
//@{
/** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
#define FEATURE_MUTE (1 << 0)
#define FEATURE_VOLUME (1 << 1)
#define FEATURE_BASS (1 << 2)
#define FEATURE_MID (1 << 3)
#define FEATURE_TREBLE (1 << 4)
#define FEATURE_GRAPHIC_EQUALIZER (1 << 5)
#define FEATURE_AUTOMATIC_GAIN (1 << 6)
#define FEATURE_DELAY (1 << 7)
#define FEATURE_BASS_BOOST (1 << 8)
#define FEATURE_BASS_LOUDNESS (1 << 9)
//@}
//@{
/** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
#define TERMINAL_UNDEFINED 0x0100
#define TERMINAL_STREAMING 0x0101
#define TERMINAL_VENDOR 0x01FF
#define TERMINAL_IN_UNDEFINED 0x0200
#define TERMINAL_IN_MIC 0x0201
#define TERMINAL_IN_DESKTOP_MIC 0x0202
#define TERMINAL_IN_PERSONAL_MIC 0x0203
#define TERMINAL_IN_OMNIDIR_MIC 0x0204
#define TERMINAL_IN_MIC_ARRAY 0x0205
#define TERMINAL_IN_PROCESSING_MIC 0x0206
#define TERMINAL_IN_OUT_UNDEFINED 0x0300
#define TERMINAL_OUT_SPEAKER 0x0301
#define TERMINAL_OUT_HEADPHONES 0x0302
#define TERMINAL_OUT_HEAD_MOUNTED 0x0303
#define TERMINAL_OUT_DESKTOP 0x0304
#define TERMINAL_OUT_ROOM 0x0305
#define TERMINAL_OUT_COMMUNICATION 0x0306
#define TERMINAL_OUT_LOWFREQ 0x0307
//@}
/** Convenience macro, to fill a 24-bit AudioSampleFreq_t structure with the given sample rate as a 24-bit number.
*
* \param freq Required audio sampling frequency in HZ
*/
#define SAMPLE_FREQ(freq) {LowWord: ((uint32_t)freq & 0x00FFFF), HighByte: (((uint32_t)freq >> 16) & 0x0000FF)}
/** Mask for the attributes parameter of an Audio class specific Endpoint descriptor, indicating that the endpoint
* accepts only filled endpoint packets of audio samples.
*/
#define EP_ACCEPTS_ONLY_FULL_PACKETS (1 << 7)
/** Mask for the attributes parameter of an Audio class specific Endpoint descriptor, indicating that the endpoint
* will accept partially filled endpoint packets of audio samples.
*/
#define EP_ACCEPTS_SMALL_PACKETS (0 << 7)
#if defined(USB_FULL_CONTROLLER) || defined(__DOXYGEN__) #if defined(USB_FULL_CONTROLLER) || defined(__DOXYGEN__)
/** Endpoint number of the Audio isochronous streaming data endpoint. */ /** Endpoint number of the Audio isochronous streaming data endpoint. */
#define AUDIO_STREAM_EPNUM 1 #define AUDIO_STREAM_EPNUM 1
@ -154,148 +60,6 @@
#define AUDIO_SAMPLE_FREQUENCY 48000 #define AUDIO_SAMPLE_FREQUENCY 48000
/* Type Defines: */ /* Type Defines: */
/** Type define for an Audio class specific interface descriptor. This follows a regular interface descriptor to
* supply extra information about the audio device's layout to the host. See the USB Audio specification for more
* details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint16_t ACSpecification; /**< Binary coded decimal value, indicating the supported Audio Class specification version */
uint16_t TotalLength; /**< Total length of the Audio class specific descriptors, including this descriptor */
uint8_t InCollection; /**< Total number of audio class interfaces within this device */
uint8_t InterfaceNumbers[1]; /**< Interface numbers of each audio interface */
} USB_AudioInterface_AC_t;
/** Type define for an Audio class specific Feature Unit descriptor. This indicates to the host what features
* are present in the device's audio stream for basic control, such as per-channel volume. See the USB Audio
* specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t UnitID; /**< ID value of this feature unit - must be a unique value within the device */
uint8_t SourceID; /**< Source ID value of the audio source input into this feature unit */
uint8_t ControlSize; /**< Size of each element in the ChanelControlls array */
uint8_t ChannelControls[3]; /**< Feature masks for the control channel, and each separate audio channel */
uint8_t FeatureUnitStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
} USB_AudioFeatureUnit_t;
/** Type define for an Audio class specific input terminal descriptor. This indicates to the host that the device
* contains an input audio source, either from a physical terminal on the device, or a logical terminal (for example,
* a USB endpoint). See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t TerminalID; /**< ID value of this terminal unit - must be a unique value within the device */
uint16_t TerminalType; /**< Type of terminal, a TERMINAL_* mask */
uint8_t AssociatedOutputTerminal; /**< ID of associated output terminal, for physically grouped terminals
* such as the speaker and microphone of a phone handset
*/
uint8_t TotalChannels; /**< Total number of separate audio channels within this interface (right, left, etc.) */
uint16_t ChannelConfig; /**< CHANNEL_* masks indicating what channel layout is supported by this terminal */
uint8_t ChannelStrIndex; /**< Index of a string descriptor describing this channel within the device */
uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
} USB_AudioInputTerminal_t;
/** Type define for an Audio class specific output terminal descriptor. This indicates to the host that the device
* contains an output audio sink, either to a physical terminal on the device, or a logical terminal (for example,
* a USB endpoint). See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t TerminalID; /**< ID value of this terminal unit - must be a unique value within the device */
uint16_t TerminalType; /**< Type of terminal, a TERMINAL_* mask */
uint8_t AssociatedInputTerminal; /**< ID of associated input terminal, for physically grouped terminals
* such as the speaker and microphone of a phone handset
*/
uint8_t SourceID; /**< ID value of the unit this terminal's audio is sourced from */
uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
} USB_AudioOutputTerminal_t;
/** Type define for an Audio class specific streaming interface descriptor. This indicates to the host
* how audio streams within the device are formatted. See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t TerminalLink; /**< ID value of the output terminal this descriptor is describing */
uint8_t FrameDelay; /**< Delay in frames resulting from the complete sample processing from input to output */
uint16_t AudioFormat; /**< Format of the audio stream, see Audio Device Formats specification */
} USB_AudioInterface_AS_t;
/** Type define for a 24bit audio sample frequency structure. GCC does not contain a built in 24bit datatype,
* this this structure is used to build up the value instead. Fill this structure with the SAMPLE_FREQ() macro.
*/
typedef struct
{
uint16_t LowWord; /**< Low 16 bits of the 24-bit value */
uint8_t HighByte; /**< Upper 8 bits of the 24-bit value */
} AudioSampleFreq_t;
/** Type define for an Audio class specific audio format descriptor. This is used to give the host full details
* about the number of channels, the sample resolution, acceptable sample frequencies and encoding method used
* in the device's audio streams. See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t FormatType; /**< Format of the audio stream, see Audio Device Formats specification */
uint8_t Channels; /**< Total number of discrete channels in the stream */
uint8_t SubFrameSize; /**< Size in bytes of each channel's sample data in the stream */
uint8_t BitResolution; /**< Bits of resolution of each channel's samples in the stream */
uint8_t SampleFrequencyType; /**< Total number of sample frequencies supported by the device */
AudioSampleFreq_t SampleFrequencies[1]; /**< Sample frequencies supported by the device */
} USB_AudioFormat_t;
/** Type define for an Audio class specific endpoint descriptor. This contains a regular endpoint
* descriptor with a few Audio-class specific extensions. See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Endpoint_t Endpoint; /**< Standard endpoint descriptor describing the audio endpoint */
uint8_t Refresh; /**< Always set to zero */
uint8_t SyncEndpointNumber; /**< Endpoint address to send synchronisation information to, if needed (zero otherwise) */
} USB_AudioStreamEndpoint_Std_t;
/** Type define for an Audio class specific extended endpoint descriptor. This contains extra information
* on the usage of endpoints used to stream audio in and out of the USB Audio device, and follows an Audio
* class specific extended endpoint descriptor. See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t Attributes; /**< Audio class specific endpoint attributes, such as ACCEPTS_SMALL_PACKETS */
uint8_t LockDelayUnits; /**< Units used for the LockDelay field, see Audio class specification */
uint16_t LockDelay; /**< Time required to internally lock endpoint's internal clock recovery circuitry */
} USB_AudioStreamEndpoint_Spc_t;
/** Type define for the device configuration descriptor structure. This must be defined in the /** 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 * application code, as the configuration descriptor contains several sub-descriptors which
* vary between devices, and which describe the device's usage to the host. * vary between devices, and which describe the device's usage to the host.

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Demos/Device/AudioOutput/Descriptors.h
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/* Includes: */ /* Includes: */
#include <LUFA/Drivers/USB/USB.h> #include <LUFA/Drivers/USB/USB.h>
#include <LUFA/Drivers/USB/Class/Device/Audio.h>
#include <avr/pgmspace.h> #include <avr/pgmspace.h>
/* Macros: */ /* Macros: */
/** Descriptor header constant to indicate a Audio class interface descriptor. */
#define DTYPE_AudioInterface 0x24
/** Descriptor header constant to indicate a Audio class endpoint descriptor. */
#define DTYPE_AudioEndpoint 0x25
/** Audio class descriptor subtype value for a Audio class specific header descriptor. */
#define DSUBTYPE_Header 0x01
/** Audio class descriptor subtype value for an Output Terminal Audio class specific descriptor. */
#define DSUBTYPE_InputTerminal 0x02
/** Audio class descriptor subtype value for an Input Terminal Audio class specific descriptor. */
#define DSUBTYPE_OutputTerminal 0x03
/** Audio class descriptor subtype value for a Feature Unit Audio class specific descriptor. */
#define DSUBTYPE_FeatureUnit 0x06
/** Audio class descriptor subtype value for a general Audio class specific descriptor. */
#define DSUBTYPE_General 0x01
/** Audio class descriptor subtype value for an Audio class specific descriptor indicating the format of an audio stream. */
#define DSUBTYPE_Format 0x02
//@{
/** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
#define CHANNEL_LEFT_FRONT (1 << 0)
#define CHANNEL_RIGHT_FRONT (1 << 1)
#define CHANNEL_CENTER_FRONT (1 << 2)
#define CHANNEL_LOW_FREQ_ENHANCE (1 << 3)
#define CHANNEL_LEFT_SURROUND (1 << 4)
#define CHANNEL_RIGHT_SURROUND (1 << 5)
#define CHANNEL_LEFT_OF_CENTER (1 << 6)
#define CHANNEL_RIGHT_OF_CENTER (1 << 7)
#define CHANNEL_SURROUND (1 << 8)
#define CHANNEL_SIDE_LEFT (1 << 9)
#define CHANNEL_SIDE_RIGHT (1 << 10)
#define CHANNEL_TOP (1 << 11)
//@}
//@{
/** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
#define FEATURE_MUTE (1 << 0)
#define FEATURE_VOLUME (1 << 1)
#define FEATURE_BASS (1 << 2)
#define FEATURE_MID (1 << 3)
#define FEATURE_TREBLE (1 << 4)
#define FEATURE_GRAPHIC_EQUALIZER (1 << 5)
#define FEATURE_AUTOMATIC_GAIN (1 << 6)
#define FEATURE_DELAY (1 << 7)
#define FEATURE_BASS_BOOST (1 << 8)
#define FEATURE_BASS_LOUDNESS (1 << 9)
//@}
//@{
/** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
#define TERMINAL_UNDEFINED 0x0100
#define TERMINAL_STREAMING 0x0101
#define TERMINAL_VENDOR 0x01FF
#define TERMINAL_IN_UNDEFINED 0x0200
#define TERMINAL_IN_MIC 0x0201
#define TERMINAL_IN_DESKTOP_MIC 0x0202
#define TERMINAL_IN_PERSONAL_MIC 0x0203
#define TERMINAL_IN_OMNIDIR_MIC 0x0204
#define TERMINAL_IN_MIC_ARRAY 0x0205
#define TERMINAL_IN_PROCESSING_MIC 0x0206
#define TERMINAL_IN_OUT_UNDEFINED 0x0300
#define TERMINAL_OUT_SPEAKER 0x0301
#define TERMINAL_OUT_HEADPHONES 0x0302
#define TERMINAL_OUT_HEAD_MOUNTED 0x0303
#define TERMINAL_OUT_DESKTOP 0x0304
#define TERMINAL_OUT_ROOM 0x0305
#define TERMINAL_OUT_COMMUNICATION 0x0306
#define TERMINAL_OUT_LOWFREQ 0x0307
//@}
/** Convenience macro, to fill a 24-bit AudioSampleFreq_t structure with the given sample rate as a 24-bit number.
*
* \param freq Required audio sampling frequency in HZ
*/
#define SAMPLE_FREQ(freq) {LowWord: ((uint32_t)freq & 0x00FFFF), HighByte: (((uint32_t)freq >> 16) & 0x0000FF)}
/** Mask for the attributes parameter of an Audio class specific Endpoint descriptor, indicating that the endpoint
* accepts only filled endpoint packets of audio samples.
*/
#define EP_ACCEPTS_ONLY_FULL_PACKETS (1 << 7)
/** Mask for the attributes parameter of an Audio class specific Endpoint descriptor, indicating that the endpoint
* will accept partially filled endpoint packets of audio samples.
*/
#define EP_ACCEPTS_SMALL_PACKETS (0 << 7)
#if defined(USB_FULL_CONTROLLER) || defined(__DOXYGEN__) #if defined(USB_FULL_CONTROLLER) || defined(__DOXYGEN__)
/** Endpoint number of the Audio isochronous streaming data endpoint. */ /** Endpoint number of the Audio isochronous streaming data endpoint. */
#define AUDIO_STREAM_EPNUM 1 #define AUDIO_STREAM_EPNUM 1
@ -154,148 +60,6 @@
#define AUDIO_SAMPLE_FREQUENCY 48000 #define AUDIO_SAMPLE_FREQUENCY 48000
/* Type Defines: */ /* Type Defines: */
/** Type define for an Audio class specific interface descriptor. This follows a regular interface descriptor to
* supply extra information about the audio device's layout to the host. See the USB Audio specification for more
* details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint16_t ACSpecification; /**< Binary coded decimal value, indicating the supported Audio Class specification version */
uint16_t TotalLength; /**< Total length of the Audio class specific descriptors, including this descriptor */
uint8_t InCollection; /**< Total number of audio class interfaces within this device */
uint8_t InterfaceNumbers[1]; /**< Interface numbers of each audio interface */
} USB_AudioInterface_AC_t;
/** Type define for an Audio class specific Feature Unit descriptor. This indicates to the host what features
* are present in the device's audio stream for basic control, such as per-channel volume. See the USB Audio
* specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t UnitID; /**< ID value of this feature unit - must be a unique value within the device */
uint8_t SourceID; /**< Source ID value of the audio source input into this feature unit */
uint8_t ControlSize; /**< Size of each element in the ChanelControlls array */
uint8_t ChannelControls[3]; /**< Feature masks for the control channel, and each separate audio channel */
uint8_t FeatureUnitStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
} USB_AudioFeatureUnit_t;
/** Type define for an Audio class specific input terminal descriptor. This indicates to the host that the device
* contains an input audio source, either from a physical terminal on the device, or a logical terminal (for example,
* a USB endpoint). See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t TerminalID; /**< ID value of this terminal unit - must be a unique value within the device */
uint16_t TerminalType; /**< Type of terminal, a TERMINAL_* mask */
uint8_t AssociatedOutputTerminal; /**< ID of associated output terminal, for physically grouped terminals
* such as the speaker and microphone of a phone handset
*/
uint8_t TotalChannels; /**< Total number of separate audio channels within this interface (right, left, etc.) */
uint16_t ChannelConfig; /**< CHANNEL_* masks indicating what channel layout is supported by this terminal */
uint8_t ChannelStrIndex; /**< Index of a string descriptor describing this channel within the device */
uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
} USB_AudioInputTerminal_t;
/** Type define for an Audio class specific output terminal descriptor. This indicates to the host that the device
* contains an output audio sink, either to a physical terminal on the device, or a logical terminal (for example,
* a USB endpoint). See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t TerminalID; /**< ID value of this terminal unit - must be a unique value within the device */
uint16_t TerminalType; /**< Type of terminal, a TERMINAL_* mask */
uint8_t AssociatedInputTerminal; /**< ID of associated input terminal, for physically grouped terminals
* such as the speaker and microphone of a phone handset
*/
uint8_t SourceID; /**< ID value of the unit this terminal's audio is sourced from */
uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
} USB_AudioOutputTerminal_t;
/** Type define for an Audio class specific streaming interface descriptor. This indicates to the host
* how audio streams within the device are formatted. See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t TerminalLink; /**< ID value of the output terminal this descriptor is describing */
uint8_t FrameDelay; /**< Delay in frames resulting from the complete sample processing from input to output */
uint16_t AudioFormat; /**< Format of the audio stream, see Audio Device Formats specification */
} USB_AudioInterface_AS_t;
/** Type define for a 24bit audio sample frequency structure. GCC does not contain a built in 24bit datatype,
* this this structure is used to build up the value instead. Fill this structure with the SAMPLE_FREQ() macro.
*/
typedef struct
{
uint16_t LowWord; /**< Low 16 bits of the 24-bit value */
uint8_t HighByte; /**< Upper 8 bits of the 24-bit value */
} AudioSampleFreq_t;
/** Type define for an Audio class specific audio format descriptor. This is used to give the host full details
* about the number of channels, the sample resolution, acceptable sample frequencies and encoding method used
* in the device's audio streams. See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t FormatType; /**< Format of the audio stream, see Audio Device Formats specification */
uint8_t Channels; /**< Total number of discrete channels in the stream */
uint8_t SubFrameSize; /**< Size in bytes of each channel's sample data in the stream */
uint8_t BitResolution; /**< Bits of resolution of each channel's samples in the stream */
uint8_t SampleFrequencyType; /**< Total number of sample frequencies supported by the device */
AudioSampleFreq_t SampleFrequencies[1]; /**< Sample frequencies supported by the device */
} USB_AudioFormat_t;
/** Type define for an Audio class specific endpoint descriptor. This contains a regular endpoint
* descriptor with a few Audio-class specific extensions. See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Endpoint_t Endpoint; /**< Standard endpoint descriptor describing the audio endpoint */
uint8_t Refresh; /**< Always set to zero */
uint8_t SyncEndpointNumber; /**< Endpoint address to send synchronisation information to, if needed (zero otherwise) */
} USB_AudioStreamEndpoint_Std_t;
/** Type define for an Audio class specific extended endpoint descriptor. This contains extra information
* on the usage of endpoints used to stream audio in and out of the USB Audio device, and follows an Audio
* class specific extended endpoint descriptor. See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t Attributes; /**< Audio class specific endpoint attributes, such as ACCEPTS_SMALL_PACKETS */
uint8_t LockDelayUnits; /**< Units used for the LockDelay field, see Audio class specification */
uint16_t LockDelay; /**< Time required to internally lock endpoint's internal clock recovery circuitry */
} USB_AudioStreamEndpoint_Spc_t;
/** Type define for the device configuration descriptor structure. This must be defined in the /** 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 * application code, as the configuration descriptor contains several sub-descriptors which
* vary between devices, and which describe the device's usage to the host. * vary between devices, and which describe the device's usage to the host.

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Demos/Device/MIDI/Descriptors.h
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/* Includes: */ /* Includes: */
#include <LUFA/Drivers/USB/USB.h> #include <LUFA/Drivers/USB/USB.h>
#include <LUFA/Drivers/USB/Class/Device/MIDI.h>
#include <avr/pgmspace.h> #include <avr/pgmspace.h>
/* Macros: */ /* Macros: */
/** Descriptor header constant to indicate a Audio class interface descriptor. */ /** Endpoint number of the MIDI streaming data IN endpoint, for device-to-host data transfers. */
#define DTYPE_AudioInterface 0x24 #define MIDI_STREAM_IN_EPNUM 2
/** Descriptor header constant to indicate a Audio class endpoint descriptor. */
#define DTYPE_AudioEndpoint 0x25
/** Audio class descriptor subtype value for a Audio class specific header descriptor. */
#define DSUBTYPE_Header 0x01
/** Audio class descriptor subtype value for a Audio class specific MIDI input jack descriptor. */
#define DSUBTYPE_InputJack 0x02
/** Audio class descriptor subtype value for a Audio class specific MIDI output jack descriptor. */
#define DSUBTYPE_OutputJack 0x03
/** Audio class descriptor subtype value for a general Audio class specific descriptor. */
#define DSUBTYPE_General 0x01
/** Audio class descriptor jack type value for an embedded (logical) MIDI input or output jack. */
#define JACKTYPE_EMBEDDED 0x01
/** Audio class descriptor jack type value for an external (physical) MIDI input or output jack. */
#define JACKTYPE_EXTERNAL 0x02
/** Endpoint number of the MIDI streaming data OUT endpoint, for host-to-device data transfers. */ /** Endpoint number of the MIDI streaming data OUT endpoint, for host-to-device data transfers. */
#define MIDI_STREAM_OUT_EPNUM 1 #define MIDI_STREAM_OUT_EPNUM 1
/** Endpoint number of the MIDI streaming data IN endpoint, for device-to-host data transfers. */
#define MIDI_STREAM_IN_EPNUM 2
/** Endpoint size in bytes of the Audio isochronous streaming data IN and OUT endpoints. */ /** Endpoint size in bytes of the Audio isochronous streaming data IN and OUT endpoints. */
#define MIDI_STREAM_EPSIZE 64 #define MIDI_STREAM_EPSIZE 64
/* Type Defines: */ /* Type Defines: */
/** Type define for an Audio class specific interface descriptor. This follows a regular interface descriptor to
* supply extra information about the audio device's layout to the host. See the USB Audio specification for more
* details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint16_t ACSpecification; /** Binary coded decimal value, indicating the supported Audio Class specification version */
uint16_t TotalLength; /** Total length of the Audio class specific control descriptors, including this descriptor */
uint8_t InCollection; /** Total number of audio class interfaces within this device */
uint8_t InterfaceNumbers[1]; /** Interface numbers of each audio interface */
} USB_AudioInterface_AC_t;
/** Type define for an Audio class specific MIDI streaming interface descriptor. This indicates to the host
* how MIDI the specification compliance of the device and the total length of the Audio class specific descriptors.
* See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint16_t AudioSpecification; /**< Binary coded decimal value, indicating the supported Audio Class specification version */
uint16_t TotalLength; /**< Total length of the Audio class specific descriptors, including this descriptor */
} USB_AudioInterface_MIDI_AS_t;
/** Type define for an Audio class specific endpoint descriptor. This contains a regular endpoint
* descriptor with a few Audio-class specific extensions. See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Endpoint_t Endpoint; /**< Standard endpoint descriptor describing the audio endpoint */
uint8_t Refresh; /**< Always set to zero */
uint8_t SyncEndpointNumber; /**< Endpoint address to send synchronisation information to, if needed (zero otherwise) */
} USB_AudioStreamEndpoint_Std_t;
/** Type define for an Audio class specific MIDI IN jack. This gives information to the host on a MIDI input, either
* a physical input jack, or a logical jack (receiving input data internally, or from the host via an endpoint).
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t JackType; /**< Type of jack, one of the JACKTYPE_* mask values */
uint8_t JackID; /**< ID value of this jack - must be a unique value within the device */
uint8_t JackStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
} USB_MIDI_In_Jack_t;
/** Type define for an Audio class specific MIDI OUT jack. This gives information to the host on a MIDI output, either
* a physical output jack, or a logical jack (sending output data internally, or to the host via an endpoint).
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t JackType; /**< Type of jack, one of the JACKTYPE_* mask values */
uint8_t JackID; /**< ID value of this jack - must be a unique value within the device */
uint8_t NumberOfPins; /**< Number of output channels within the jack, either physical or logical */
uint8_t SourceJackID[1]; /**< ID of each output pin's source data jack */
uint8_t SourcePinID[1]; /**< Pin number in the input jack of each output pin's source data */
uint8_t JackStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
} USB_MIDI_Out_Jack_t;
/** Type define for an Audio class specific extended MIDI jack endpoint descriptor. This contains extra information
* on the usage of MIDI endpoints used to stream MIDI events in and out of the USB Audio device, and follows an Audio
* class specific extended MIDI endpoint descriptor. See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t TotalEmbeddedJacks; /**< Total number of jacks inside this endpoint */
uint8_t AssociatedJackID[1]; /**< IDs of each jack inside the endpoint */
} USB_MIDI_Jack_Endpoint_t;
/** Type define for the device configuration descriptor structure. This must be defined in the /** 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 * application code, as the configuration descriptor contains several sub-descriptors which
* vary between devices, and which describe the device's usage to the host. * vary between devices, and which describe the device's usage to the host.

201
Demos/Device/MIDI/MIDI.c
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@ -28,25 +28,34 @@
this software. this software.
*/ */
/** \file
*
* Main source file for the MIDI input demo. This file contains the main tasks of the demo and
* is responsible for the initial application hardware configuration.
*/
#include "MIDI.h" #include "MIDI.h"
/* Scheduler Task List */ USB_ClassInfo_MIDI_t Keyboard_MIDI_Interface =
TASK_LIST
{ {
{ .Task = USB_USBTask , .TaskStatus = TASK_STOP }, .InterfaceNumber = 0,
{ .Task = USB_MIDI_Task , .TaskStatus = TASK_STOP },
.DataINEndpointNumber = MIDI_STREAM_IN_EPNUM,
.DataINEndpointSize = MIDI_STREAM_EPSIZE,
.DataOUTEndpointNumber = MIDI_STREAM_OUT_EPNUM,
.DataOUTEndpointSize = MIDI_STREAM_EPSIZE,
}; };
/** Main program entry point. This routine configures the hardware required by the application, then
* starts the scheduler to run the application tasks.
*/
int main(void) int main(void)
{
SetupHardware();
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
for (;;)
{
CheckJoystickMovement();
USB_USBTask();
}
}
void SetupHardware(void)
{ {
/* Disable watchdog if enabled by bootloader/fuses */ /* Disable watchdog if enabled by bootloader/fuses */
MCUSR &= ~(1 << WDRF); MCUSR &= ~(1 << WDRF);
@ -59,77 +68,16 @@ int main(void)
Joystick_Init(); Joystick_Init();
LEDs_Init(); LEDs_Init();
Buttons_Init(); Buttons_Init();
/* Indicate USB not ready */
UpdateStatus(Status_USBNotReady);
/* Initialize Scheduler so that it can be used */
Scheduler_Init();
/* Initialize USB Subsystem */
USB_Init(); USB_Init();
/* Scheduling - routine never returns, so put this last in the main function */
Scheduler_Start();
} }
/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs. */ void CheckJoystickMovement(void)
void EVENT_USB_Connect(void)
{
/* Start USB management task */
Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);
/* Indicate USB enumerating */
UpdateStatus(Status_USBEnumerating);
}
/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
* the status LEDs, disables the sample update and PWM output timers and stops the USB and MIDI management tasks.
*/
void EVENT_USB_Disconnect(void)
{
/* Stop running audio and USB management tasks */
Scheduler_SetTaskMode(USB_MIDI_Task, TASK_STOP);
Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);
/* Indicate USB not ready */
UpdateStatus(Status_USBNotReady);
}
/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration
* of the USB device after enumeration - the device endpoints are configured and the MIDI management task started.
*/
void EVENT_USB_ConfigurationChanged(void)
{
/* Setup MIDI stream endpoints */
Endpoint_ConfigureEndpoint(MIDI_STREAM_OUT_EPNUM, EP_TYPE_BULK,
ENDPOINT_DIR_OUT, MIDI_STREAM_EPSIZE,
ENDPOINT_BANK_SINGLE);
Endpoint_ConfigureEndpoint(MIDI_STREAM_IN_EPNUM, EP_TYPE_BULK,
ENDPOINT_DIR_IN, MIDI_STREAM_EPSIZE,
ENDPOINT_BANK_SINGLE);
/* Indicate USB connected and ready */
UpdateStatus(Status_USBReady);
/* Start MIDI task */
Scheduler_SetTaskMode(USB_MIDI_Task, TASK_RUN);
}
/** Task to handle the generation of MIDI note change events in response to presses of the board joystick, and send them
* to the host.
*/
TASK(USB_MIDI_Task)
{ {
static uint8_t PrevJoystickStatus; static uint8_t PrevJoystickStatus;
/* Select the MIDI IN stream */ uint8_t MIDICommand = 0;
Endpoint_SelectEndpoint(MIDI_STREAM_IN_EPNUM); uint8_t MIDIPitch;
/* Check if endpoint is ready to be written to */
if (Endpoint_IsINReady())
{
/* Get current joystick mask, XOR with previous to detect joystick changes */ /* Get current joystick mask, XOR with previous to detect joystick changes */
uint8_t JoystickStatus = Joystick_GetStatus(); uint8_t JoystickStatus = Joystick_GetStatus();
uint8_t JoystickChanges = (JoystickStatus ^ PrevJoystickStatus); uint8_t JoystickChanges = (JoystickStatus ^ PrevJoystickStatus);
@ -138,82 +86,67 @@ TASK(USB_MIDI_Task)
uint8_t Channel = ((Buttons_GetStatus() & BUTTONS_BUTTON1) ? MIDI_CHANNEL(10) : MIDI_CHANNEL(1)); uint8_t Channel = ((Buttons_GetStatus() & BUTTONS_BUTTON1) ? MIDI_CHANNEL(10) : MIDI_CHANNEL(1));
if (JoystickChanges & JOY_LEFT) if (JoystickChanges & JOY_LEFT)
SendMIDINoteChange(0x3C, (JoystickStatus & JOY_LEFT), 0, Channel); {
MIDICommand = ((JoystickStatus & JOY_LEFT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
MIDIPitch = 0x3C;
}
if (JoystickChanges & JOY_UP) if (JoystickChanges & JOY_UP)
SendMIDINoteChange(0x3D, (JoystickStatus & JOY_UP), 0, Channel); {
MIDICommand = ((JoystickStatus & JOY_UP)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
MIDIPitch = 0x3D;
}
if (JoystickChanges & JOY_RIGHT) if (JoystickChanges & JOY_RIGHT)
SendMIDINoteChange(0x3E, (JoystickStatus & JOY_RIGHT), 0, Channel); {
MIDICommand = ((JoystickStatus & JOY_RIGHT)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
MIDIPitch = 0x3E;
}
if (JoystickChanges & JOY_DOWN) if (JoystickChanges & JOY_DOWN)
SendMIDINoteChange(0x3F, (JoystickStatus & JOY_DOWN), 0, Channel); {
MIDICommand = ((JoystickStatus & JOY_DOWN)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
MIDIPitch = 0x3F;
}
if (JoystickChanges & JOY_PRESS) if (JoystickChanges & JOY_PRESS)
SendMIDINoteChange(0x3B, (JoystickStatus & JOY_PRESS), 0, Channel); {
MIDICommand = ((JoystickStatus & JOY_PRESS)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
/* Save previous joystick value for next joystick change detection */ MIDIPitch = 0x3B;
PrevJoystickStatus = JoystickStatus;
} }
/* Select the MIDI OUT stream */ if (MIDICommand)
Endpoint_SelectEndpoint(MIDI_STREAM_OUT_EPNUM); {
USB_MIDI_EventPacket_t MIDIEvent = (USB_MIDI_EventPacket_t)
{
.CableNumber = 0,
.Command = MIDICommand,
.Data1 = (MIDICommand << 4) | Channel,
.Data2 = MIDIPitch,
.Data3 = MIDI_STANDARD_VELOCITY,
};
/* Check if endpoint is ready to be read from, if so discard its (unused) data */ USB_MIDI_SendEventPacket(&Keyboard_MIDI_Interface, &MIDIEvent);
if (Endpoint_IsOUTReceived())
Endpoint_ClearOUT();
} }
/** Function to manage status updates to the user. This is done via LEDs on the given board, if available, but may be changed to PrevJoystickStatus = JoystickStatus;
* log to a serial port, or anything else that is suitable for status updates. }
*
* \param CurrentStatus Current status of the system, from the MIDI_StatusCodes_t enum
*/
void UpdateStatus(uint8_t CurrentStatus)
{
uint8_t LEDMask = LEDS_NO_LEDS;
/* Set the LED mask to the appropriate LED mask based on the given status code */ void EVENT_USB_Connect(void)
switch (CurrentStatus)
{ {
case Status_USBNotReady: LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
LEDMask = (LEDS_LED1);
break;
case Status_USBEnumerating:
LEDMask = (LEDS_LED1 | LEDS_LED2);
break;
case Status_USBReady:
LEDMask = (LEDS_LED2 | LEDS_LED4);
break;
} }
/* Set the board LEDs to the new LED mask */ void EVENT_USB_Disconnect(void)
LEDs_SetAllLEDs(LEDMask); {
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
} }
/** Sends a MIDI note change event (note on or off) to the MIDI output jack, on the given virtual cable ID and channel. void EVENT_USB_ConfigurationChanged(void)
*
* \param Pitch Pitch of the note to turn on or off
* \param OnOff Set to true if the note is on (being held down), or false otherwise
* \param CableID ID of the virtual cable to send the note change to
* \param Channel MIDI channel number to send the note change event to
*/
void SendMIDINoteChange(const uint8_t Pitch, const bool OnOff, const uint8_t CableID, const uint8_t Channel)
{ {
/* Wait until endpoint ready for more data */ LEDs_SetAllLEDs(LEDMASK_USB_READY);
while (!(Endpoint_IsReadWriteAllowed()));
/* Check if the message should be a Note On or Note Off command */
uint8_t Command = ((OnOff)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
/* Write the Packet Header to the endpoint */
Endpoint_Write_Byte((CableID << 4) | (Command >> 4));
/* Write the Note On/Off command with the specified channel, pitch and velocity */
Endpoint_Write_Byte(Command | Channel);
Endpoint_Write_Byte(Pitch);
Endpoint_Write_Byte(MIDI_STANDARD_VELOCITY);
/* Send the data in the endpoint to the host */ if (!(USB_MIDI_ConfigureEndpoints(&Keyboard_MIDI_Interface)))
Endpoint_ClearIN(); LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
} }

52
Demos/Device/MIDI/MIDI.h
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@ -44,49 +44,27 @@
#include "Descriptors.h" #include "Descriptors.h"
#include <LUFA/Version.h> // Library Version Information #include <LUFA/Version.h>
#include <LUFA/Drivers/USB/USB.h> // USB Functionality #include <LUFA/Drivers/Board/LEDs.h>
#include <LUFA/Drivers/Board/Joystick.h> // Joystick driver #include <LUFA/Drivers/Board/Joystick.h>
#include <LUFA/Drivers/Board/LEDs.h> // LEDs driver #include <LUFA/Drivers/Board/Buttons.h>
#include <LUFA/Drivers/Board/Buttons.h> // Board Buttons driver #include <LUFA/Drivers/Peripheral/ADC.h>
#include <LUFA/Scheduler/Scheduler.h> // Simple scheduler for task management #include <LUFA/Drivers/USB/USB.h>
#include <LUFA/Drivers/USB/Class/Device/MIDI.h>
/* Macros: */ /* Macros: */
/** MIDI command for a note on (activation) event */ #define LEDMASK_USB_NOTREADY LEDS_LED1
#define MIDI_COMMAND_NOTE_ON 0x90 #define LEDMASK_USB_ENUMERATING (LEDS_LED2 | LEDS_LED3)
#define LEDMASK_USB_READY (LEDS_LED2 | LEDS_LED4)
/** MIDI command for a note off (deactivation) event */ #define LEDMASK_USB_ERROR (LEDS_LED1 | LEDS_LED3)
#define MIDI_COMMAND_NOTE_OFF 0x80
/** Standard key press velocity value used for all note events, as no pressure sensor is mounted */
#define MIDI_STANDARD_VELOCITY 64
/** Convenience macro. MIDI channels are numbered from 1-10 (natural numbers) however the logical channel
* addresses are zero-indexed. This converts a natural MIDI channel number into the logical channel address.
*
* \param channel MIDI channel number to address
*/
#define MIDI_CHANNEL(channel) (channel - 1)
/* Enums: */
/** Enum for the possible status codes for passing to the UpdateStatus() function. */
enum MIDI_StatusCodes_t
{
Status_USBNotReady = 0, /**< USB is not ready (disconnected from a USB host) */
Status_USBEnumerating = 1, /**< USB interface is enumerating */
Status_USBReady = 2, /**< USB interface is connected and ready */
};
/* Task Definitions: */
TASK(USB_MIDI_Task);
/* Function Prototypes: */ /* Function Prototypes: */
void SetupHardware(void);
void CheckJoystickMovement(void);
void EVENT_USB_Connect(void); void EVENT_USB_Connect(void);
void EVENT_USB_Disconnect(void); void EVENT_USB_Disconnect(void);
void EVENT_USB_ConfigurationChanged(void); void EVENT_USB_ConfigurationChanged(void);
void EVENT_USB_UnhandledControlPacket(void);
void SendMIDINoteChange(const uint8_t Pitch, const bool OnOff,
const uint8_t CableID, const uint8_t Channel);
void UpdateStatus(uint8_t CurrentStatus);
#endif #endif

3
Demos/Device/MIDI/makefile
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@ -125,7 +125,6 @@ LUFA_PATH = ../../..
# List C source files here. (C dependencies are automatically generated.) # List C source files here. (C dependencies are automatically generated.)
SRC = $(TARGET).c \ SRC = $(TARGET).c \
Descriptors.c \ Descriptors.c \
$(LUFA_PATH)/LUFA/Scheduler/Scheduler.c \
$(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/DevChapter9.c \ $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/DevChapter9.c \
$(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/Endpoint.c \ $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/Endpoint.c \
$(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/Host.c \ $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/Host.c \
@ -136,7 +135,7 @@ SRC = $(TARGET).c \
$(LUFA_PATH)/LUFA/Drivers/USB/HighLevel/USBInterrupt.c \ $(LUFA_PATH)/LUFA/Drivers/USB/HighLevel/USBInterrupt.c \
$(LUFA_PATH)/LUFA/Drivers/USB/HighLevel/USBTask.c \ $(LUFA_PATH)/LUFA/Drivers/USB/HighLevel/USBTask.c \
$(LUFA_PATH)/LUFA/Drivers/USB/HighLevel/ConfigDescriptor.c \ $(LUFA_PATH)/LUFA/Drivers/USB/HighLevel/ConfigDescriptor.c \
$(LUFA_PATH)/LUFA/Drivers/USB/Class/HIDParser.c \ $(LUFA_PATH)/LUFA/Drivers/USB/Class/Device/MIDI.c \
# List C++ source files here. (C dependencies are automatically generated.) # List C++ source files here. (C dependencies are automatically generated.)

2
LUFA.pnproj
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4
LUFA/Drivers/USB/Class/Device/Audio.c
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@ -35,8 +35,8 @@ void USB_Audio_ProcessControlPacket(USB_ClassInfo_Audio_t* AudioInterfaceInfo)
if (!(Endpoint_IsSETUPReceived())) if (!(Endpoint_IsSETUPReceived()))
return; return;
// if (USB_ControlRequest.wIndex != AudioInterfaceInfo->InterfaceNumber) if (USB_ControlRequest.wIndex != AudioInterfaceInfo->InterfaceNumber)
// return; return;
switch (USB_ControlRequest.bRequest) switch (USB_ControlRequest.bRequest)
{ {

236
LUFA/Drivers/USB/Class/Device/Audio.h
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@ -37,10 +37,244 @@
#include <string.h> #include <string.h>
/* Macros: */ /* Macros: */
/** Descriptor header constant to indicate a Audio class interface descriptor. */
#define DTYPE_AudioInterface 0x24
/* Enums: */ /** Descriptor header constant to indicate a Audio class endpoint descriptor. */
#define DTYPE_AudioEndpoint 0x25
/** Audio class descriptor subtype value for a Audio class specific header descriptor. */
#define DSUBTYPE_Header 0x01
/** Audio class descriptor subtype value for an Output Terminal Audio class specific descriptor. */
#define DSUBTYPE_InputTerminal 0x02
/** Audio class descriptor subtype value for an Input Terminal Audio class specific descriptor. */
#define DSUBTYPE_OutputTerminal 0x03
/** Audio class descriptor subtype value for a Feature Unit Audio class specific descriptor. */
#define DSUBTYPE_FeatureUnit 0x06
/** Audio class descriptor subtype value for a general Audio class specific descriptor. */
#define DSUBTYPE_General 0x01
/** Audio class descriptor subtype value for an Audio class specific descriptor indicating the format of an audio stream. */
#define DSUBTYPE_Format 0x02
//@{
/** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
#define CHANNEL_LEFT_FRONT (1 << 0)
#define CHANNEL_RIGHT_FRONT (1 << 1)
#define CHANNEL_CENTER_FRONT (1 << 2)
#define CHANNEL_LOW_FREQ_ENHANCE (1 << 3)
#define CHANNEL_LEFT_SURROUND (1 << 4)
#define CHANNEL_RIGHT_SURROUND (1 << 5)
#define CHANNEL_LEFT_OF_CENTER (1 << 6)
#define CHANNEL_RIGHT_OF_CENTER (1 << 7)
#define CHANNEL_SURROUND (1 << 8)
#define CHANNEL_SIDE_LEFT (1 << 9)
#define CHANNEL_SIDE_RIGHT (1 << 10)
#define CHANNEL_TOP (1 << 11)
//@}
//@{
/** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
#define FEATURE_MUTE (1 << 0)
#define FEATURE_VOLUME (1 << 1)
#define FEATURE_BASS (1 << 2)
#define FEATURE_MID (1 << 3)
#define FEATURE_TREBLE (1 << 4)
#define FEATURE_GRAPHIC_EQUALIZER (1 << 5)
#define FEATURE_AUTOMATIC_GAIN (1 << 6)
#define FEATURE_DELAY (1 << 7)
#define FEATURE_BASS_BOOST (1 << 8)
#define FEATURE_BASS_LOUDNESS (1 << 9)
//@}
//@{
/** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
#define TERMINAL_UNDEFINED 0x0100
#define TERMINAL_STREAMING 0x0101
#define TERMINAL_VENDOR 0x01FF
#define TERMINAL_IN_UNDEFINED 0x0200
#define TERMINAL_IN_MIC 0x0201
#define TERMINAL_IN_DESKTOP_MIC 0x0202
#define TERMINAL_IN_PERSONAL_MIC 0x0203
#define TERMINAL_IN_OMNIDIR_MIC 0x0204
#define TERMINAL_IN_MIC_ARRAY 0x0205
#define TERMINAL_IN_PROCESSING_MIC 0x0206
#define TERMINAL_IN_OUT_UNDEFINED 0x0300
#define TERMINAL_OUT_SPEAKER 0x0301
#define TERMINAL_OUT_HEADPHONES 0x0302
#define TERMINAL_OUT_HEAD_MOUNTED 0x0303
#define TERMINAL_OUT_DESKTOP 0x0304
#define TERMINAL_OUT_ROOM 0x0305
#define TERMINAL_OUT_COMMUNICATION 0x0306
#define TERMINAL_OUT_LOWFREQ 0x0307
//@}
/** Convenience macro, to fill a 24-bit AudioSampleFreq_t structure with the given sample rate as a 24-bit number.
*
* \param freq Required audio sampling frequency in HZ
*/
#define SAMPLE_FREQ(freq) {LowWord: ((uint32_t)freq & 0x00FFFF), HighByte: (((uint32_t)freq >> 16) & 0x0000FF)}
/** Mask for the attributes parameter of an Audio class specific Endpoint descriptor, indicating that the endpoint
* accepts only filled endpoint packets of audio samples.
*/
#define EP_ACCEPTS_ONLY_FULL_PACKETS (1 << 7)
/** Mask for the attributes parameter of an Audio class specific Endpoint descriptor, indicating that the endpoint
* will accept partially filled endpoint packets of audio samples.
*/
#define EP_ACCEPTS_SMALL_PACKETS (0 << 7)
/* Type Defines: */ /* Type Defines: */
/** Type define for an Audio class specific interface descriptor. This follows a regular interface descriptor to
* supply extra information about the audio device's layout to the host. See the USB Audio specification for more
* details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint16_t ACSpecification; /**< Binary coded decimal value, indicating the supported Audio Class specification version */
uint16_t TotalLength; /**< Total length of the Audio class specific descriptors, including this descriptor */
uint8_t InCollection; /**< Total number of audio class interfaces within this device */
uint8_t InterfaceNumbers[1]; /**< Interface numbers of each audio interface */
} USB_AudioInterface_AC_t;
/** Type define for an Audio class specific Feature Unit descriptor. This indicates to the host what features
* are present in the device's audio stream for basic control, such as per-channel volume. See the USB Audio
* specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t UnitID; /**< ID value of this feature unit - must be a unique value within the device */
uint8_t SourceID; /**< Source ID value of the audio source input into this feature unit */
uint8_t ControlSize; /**< Size of each element in the ChanelControlls array */
uint8_t ChannelControls[3]; /**< Feature masks for the control channel, and each separate audio channel */
uint8_t FeatureUnitStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
} USB_AudioFeatureUnit_t;
/** Type define for an Audio class specific input terminal descriptor. This indicates to the host that the device
* contains an input audio source, either from a physical terminal on the device, or a logical terminal (for example,
* a USB endpoint). See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t TerminalID; /**< ID value of this terminal unit - must be a unique value within the device */
uint16_t TerminalType; /**< Type of terminal, a TERMINAL_* mask */
uint8_t AssociatedOutputTerminal; /**< ID of associated output terminal, for physically grouped terminals
* such as the speaker and microphone of a phone handset
*/
uint8_t TotalChannels; /**< Total number of separate audio channels within this interface (right, left, etc.) */
uint16_t ChannelConfig; /**< CHANNEL_* masks indicating what channel layout is supported by this terminal */
uint8_t ChannelStrIndex; /**< Index of a string descriptor describing this channel within the device */
uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
} USB_AudioInputTerminal_t;
/** Type define for an Audio class specific output terminal descriptor. This indicates to the host that the device
* contains an output audio sink, either to a physical terminal on the device, or a logical terminal (for example,
* a USB endpoint). See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t TerminalID; /**< ID value of this terminal unit - must be a unique value within the device */
uint16_t TerminalType; /**< Type of terminal, a TERMINAL_* mask */
uint8_t AssociatedInputTerminal; /**< ID of associated input terminal, for physically grouped terminals
* such as the speaker and microphone of a phone handset
*/
uint8_t SourceID; /**< ID value of the unit this terminal's audio is sourced from */
uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
} USB_AudioOutputTerminal_t;
/** Type define for an Audio class specific streaming interface descriptor. This indicates to the host
* how audio streams within the device are formatted. See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t TerminalLink; /**< ID value of the output terminal this descriptor is describing */
uint8_t FrameDelay; /**< Delay in frames resulting from the complete sample processing from input to output */
uint16_t AudioFormat; /**< Format of the audio stream, see Audio Device Formats specification */
} USB_AudioInterface_AS_t;
/** Type define for a 24bit audio sample frequency structure. GCC does not contain a built in 24bit datatype,
* this this structure is used to build up the value instead. Fill this structure with the SAMPLE_FREQ() macro.
*/
typedef struct
{
uint16_t LowWord; /**< Low 16 bits of the 24-bit value */
uint8_t HighByte; /**< Upper 8 bits of the 24-bit value */
} AudioSampleFreq_t;
/** Type define for an Audio class specific audio format descriptor. This is used to give the host full details
* about the number of channels, the sample resolution, acceptable sample frequencies and encoding method used
* in the device's audio streams. See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t FormatType; /**< Format of the audio stream, see Audio Device Formats specification */
uint8_t Channels; /**< Total number of discrete channels in the stream */
uint8_t SubFrameSize; /**< Size in bytes of each channel's sample data in the stream */
uint8_t BitResolution; /**< Bits of resolution of each channel's samples in the stream */
uint8_t SampleFrequencyType; /**< Total number of sample frequencies supported by the device */
AudioSampleFreq_t SampleFrequencies[1]; /**< Sample frequencies supported by the device */
} USB_AudioFormat_t;
/** Type define for an Audio class specific endpoint descriptor. This contains a regular endpoint
* descriptor with a few Audio-class specific extensions. See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Endpoint_t Endpoint; /**< Standard endpoint descriptor describing the audio endpoint */
uint8_t Refresh; /**< Always set to zero */
uint8_t SyncEndpointNumber; /**< Endpoint address to send synchronisation information to, if needed (zero otherwise) */
} USB_AudioStreamEndpoint_Std_t;
/** Type define for an Audio class specific extended endpoint descriptor. This contains extra information
* on the usage of endpoints used to stream audio in and out of the USB Audio device, and follows an Audio
* class specific extended endpoint descriptor. See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t Attributes; /**< Audio class specific endpoint attributes, such as ACCEPTS_SMALL_PACKETS */
uint8_t LockDelayUnits; /**< Units used for the LockDelay field, see Audio class specification */
uint16_t LockDelay; /**< Time required to internally lock endpoint's internal clock recovery circuitry */
} USB_AudioStreamEndpoint_Spc_t;
typedef struct typedef struct
{ {
uint8_t InterfaceNumber; uint8_t InterfaceNumber;

3
LUFA/Drivers/USB/Class/Device/CDC.c
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@ -136,6 +136,9 @@ void USB_CDC_SendString(USB_ClassInfo_CDC_t* CDCInterfaceInfo, char* Data, uint1
void USB_CDC_SendByte(USB_ClassInfo_CDC_t* CDCInterfaceInfo, uint8_t Data) void USB_CDC_SendByte(USB_ClassInfo_CDC_t* CDCInterfaceInfo, uint8_t Data)
{ {
if (!(USB_IsConnected))
return;
Endpoint_SelectEndpoint(CDCInterfaceInfo->DataINEndpointNumber); Endpoint_SelectEndpoint(CDCInterfaceInfo->DataINEndpointNumber);
if (!(Endpoint_IsReadWriteAllowed())) if (!(Endpoint_IsReadWriteAllowed()))

104
LUFA/Drivers/USB/Class/Device/MIDI.c
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@ -0,0 +1,104 @@
/*
LUFA Library
Copyright (C) Dean Camera, 2009.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, 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.
*/
#include "MIDI.h"
bool USB_MIDI_ConfigureEndpoints(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo)
{
if (MIDIInterfaceInfo->DataINEndpointNumber)
{
if (!(Endpoint_ConfigureEndpoint(MIDIInterfaceInfo->DataINEndpointNumber, EP_TYPE_BULK,
ENDPOINT_DIR_IN, MIDIInterfaceInfo->DataINEndpointSize,
ENDPOINT_BANK_SINGLE)))
{
return false;
}
}
if (MIDIInterfaceInfo->DataOUTEndpointNumber)
{
if (!(Endpoint_ConfigureEndpoint(MIDIInterfaceInfo->DataOUTEndpointNumber, EP_TYPE_BULK,
ENDPOINT_DIR_OUT, MIDIInterfaceInfo->DataOUTEndpointSize,
ENDPOINT_BANK_SINGLE)))
{
return false;
}
}
return true;
}
void USB_MIDI_SendNoteChange(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo, const uint8_t Pitch, const bool OnOff,
const uint8_t CableID, const uint8_t Channel)
{
if (!(USB_IsConnected))
return;
Endpoint_SelectEndpoint(MIDIInterfaceInfo->DataINEndpointNumber);
while (!(Endpoint_IsReadWriteAllowed()));
uint8_t Command = ((OnOff)? MIDI_COMMAND_NOTE_ON : MIDI_COMMAND_NOTE_OFF);
Endpoint_Write_Byte((CableID << 4) | (Command >> 4));
Endpoint_Write_Byte(Command | Channel);
Endpoint_Write_Byte(Pitch);
Endpoint_Write_Byte(MIDI_STANDARD_VELOCITY);
Endpoint_ClearIN();
}
void USB_MIDI_SendEventPacket(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo, USB_MIDI_EventPacket_t* Event)
{
if (!(USB_IsConnected))
return;
Endpoint_SelectEndpoint(MIDIInterfaceInfo->DataINEndpointNumber);
while (!(Endpoint_IsReadWriteAllowed()));
Endpoint_Write_Stream_LE(Event, sizeof(USB_MIDI_EventPacket_t), NO_STREAM_CALLBACK);
Endpoint_ClearIN();
}
bool USB_MIDI_ReceiveEventPacket(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo, USB_MIDI_EventPacket_t* Event)
{
if (!(USB_IsConnected))
return false;
Endpoint_SelectEndpoint(MIDIInterfaceInfo->DataOUTEndpointNumber);
if (!(Endpoint_IsReadWriteAllowed()))
return false;
Endpoint_Read_Stream_LE(Event, sizeof(USB_MIDI_EventPacket_t), NO_STREAM_CALLBACK);
Endpoint_ClearOUT();
return true;
}

158
LUFA/Drivers/USB/Class/Device/MIDI.h
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@ -0,0 +1,158 @@
/*
LUFA Library
Copyright (C) Dean Camera, 2009.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, 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.
*/
#ifndef _MIDI_CLASS_H_
#define _MIDI_CLASS_H_
/* Includes: */
#include "../../USB.h"
#include "Audio.h"
#include <string.h>
/* Macros: */
/** Audio class descriptor subtype value for a Audio class specific MIDI input jack descriptor. */
#define DSUBTYPE_InputJack 0x02
/** Audio class descriptor subtype value for a Audio class specific MIDI output jack descriptor. */
#define DSUBTYPE_OutputJack 0x03
/** Audio class descriptor jack type value for an embedded (logical) MIDI input or output jack. */
#define JACKTYPE_EMBEDDED 0x01
/** Audio class descriptor jack type value for an external (physical) MIDI input or output jack. */
#define JACKTYPE_EXTERNAL 0x02
/** MIDI command for a note on (activation) event */
#define MIDI_COMMAND_NOTE_ON 0x09
/** MIDI command for a note off (deactivation) event */
#define MIDI_COMMAND_NOTE_OFF 0x08
/** Standard key press velocity value used for all note events, as no pressure sensor is mounted */
#define MIDI_STANDARD_VELOCITY 64
/** Convenience macro. MIDI channels are numbered from 1-10 (natural numbers) however the logical channel
* addresses are zero-indexed. This converts a natural MIDI channel number into the logical channel address.
*
* \param channel MIDI channel number to address
*/
#define MIDI_CHANNEL(channel) (channel - 1)
/* Type Defines: */
/** Type define for an Audio class specific MIDI streaming interface descriptor. This indicates to the host
* how MIDI the specification compliance of the device and the total length of the Audio class specific descriptors.
* See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint16_t AudioSpecification; /**< Binary coded decimal value, indicating the supported Audio Class specification version */
uint16_t TotalLength; /**< Total length of the Audio class specific descriptors, including this descriptor */
} USB_AudioInterface_MIDI_AS_t;
/** Type define for an Audio class specific MIDI IN jack. This gives information to the host on a MIDI input, either
* a physical input jack, or a logical jack (receiving input data internally, or from the host via an endpoint).
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t JackType; /**< Type of jack, one of the JACKTYPE_* mask values */
uint8_t JackID; /**< ID value of this jack - must be a unique value within the device */
uint8_t JackStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
} USB_MIDI_In_Jack_t;
/** Type define for an Audio class specific MIDI OUT jack. This gives information to the host on a MIDI output, either
* a physical output jack, or a logical jack (sending output data internally, or to the host via an endpoint).
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t JackType; /**< Type of jack, one of the JACKTYPE_* mask values */
uint8_t JackID; /**< ID value of this jack - must be a unique value within the device */
uint8_t NumberOfPins; /**< Number of output channels within the jack, either physical or logical */
uint8_t SourceJackID[1]; /**< ID of each output pin's source data jack */
uint8_t SourcePinID[1]; /**< Pin number in the input jack of each output pin's source data */
uint8_t JackStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
} USB_MIDI_Out_Jack_t;
/** Type define for an Audio class specific extended MIDI jack endpoint descriptor. This contains extra information
* on the usage of MIDI endpoints used to stream MIDI events in and out of the USB Audio device, and follows an Audio
* class specific extended MIDI endpoint descriptor. See the USB Audio specification for more details.
*/
typedef struct
{
USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
uint8_t TotalEmbeddedJacks; /**< Total number of jacks inside this endpoint */
uint8_t AssociatedJackID[1]; /**< IDs of each jack inside the endpoint */
} USB_MIDI_Jack_Endpoint_t;
typedef struct
{
unsigned char Command : 4;
unsigned char CableNumber : 4;
uint8_t Data1;
uint8_t Data2;
uint8_t Data3;
} USB_MIDI_EventPacket_t;
typedef struct
{
uint8_t InterfaceNumber;
uint8_t DataINEndpointNumber;
uint16_t DataINEndpointSize;
uint8_t DataOUTEndpointNumber;
uint16_t DataOUTEndpointSize;
bool InterfaceEnabled;
} USB_ClassInfo_MIDI_t;
/* Function Prototypes: */
bool USB_MIDI_ConfigureEndpoints(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo);
void USB_MIDI_USBTask(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo);
void USB_MIDI_SendEventPacket(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo, USB_MIDI_EventPacket_t* Event);
bool USB_MIDI_ReceiveEventPacket(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo, USB_MIDI_EventPacket_t* Event);
#endif

1
LUFA/Drivers/USB/Class/Device/RNDIS.h
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@ -255,6 +255,5 @@
void USB_RNDIS_USBTask(USB_ClassInfo_RNDIS_t* RNDISInterfaceInfo); void USB_RNDIS_USBTask(USB_ClassInfo_RNDIS_t* RNDISInterfaceInfo);
bool USB_RNDIS_ConfigureEndpoints(USB_ClassInfo_RNDIS_t* RNDISInterfaceInfo); bool USB_RNDIS_ConfigureEndpoints(USB_ClassInfo_RNDIS_t* RNDISInterfaceInfo);
void USB_RNDIS_ProcessControlPacket(USB_ClassInfo_RNDIS_t* RNDISInterfaceInfo); void USB_RNDIS_ProcessControlPacket(USB_ClassInfo_RNDIS_t* RNDISInterfaceInfo);
void USB_RNDIS_USBTask(USB_ClassInfo_RNDIS_t* RNDISInterfaceInfo);
#endif #endif

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