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Added support to the MIDI Class drivers for packed data, where multiple MIDI events are packed into a single USB packet. Added new MIDI Class driver flush routines to override packing behaviour.

This commit is contained in:
Dean Camera 2010-01-05 13:52:34 +00:00
parent 60e9641222
commit d97db1120b
13 changed files with 113 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Demos/Device/ClassDriver/MIDI/MIDI.c
View File

@ -158,6 +158,7 @@ void CheckJoystickMovement(void)
};
MIDI_Device_SendEventPacket(&Keyboard_MIDI_Interface, &MIDIEvent);
MIDI_Device_Flush(&Keyboard_MIDI_Interface);
}
PrevJoystickStatus = JoystickStatus;

1
Demos/Host/ClassDriver/MIDIHost/MIDIHost.c
View File

@ -203,6 +203,7 @@ void CheckJoystickMovement(void)
};
MIDI_Host_SendEventPacket(&Keyboard_MIDI_Interface, &MIDIEvent);
MIDI_Host_Flush(&Keyboard_MIDI_Interface);
}
PrevJoystickStatus = JoystickStatus;

2
Demos/Host/LowLevel/RNDISEthernetHost/ConfigDescriptor.c
View File

@ -158,7 +158,7 @@ uint8_t ProcessConfigurationDescriptor(void)
}
else
{
/* Only configure the OUT data pipe if the data endpoints haev not shown to be bidirectional */
/* Only configure the OUT data pipe if the data endpoints have not shown to be bidirectional */
if (!(Pipe_IsEndpointBound(EndpointData->EndpointAddress)))
{
/* Configure the data OUT pipe */

2
Demos/Host/LowLevel/VirtualSerialHost/ConfigDescriptor.c
View File

@ -158,7 +158,7 @@ uint8_t ProcessConfigurationDescriptor(void)
}
else
{
/* Only configure the OUT data pipe if the data endpoints haev not shown to be bidirectional */
/* Only configure the OUT data pipe if the data endpoints have not shown to be bidirectional */
if (!(Pipe_IsEndpointBound(EndpointData->EndpointAddress)))
{
/* Configure the data OUT pipe */

8
LUFA/Drivers/USB/Class/Device/CDC.h
View File

@ -155,7 +155,9 @@
void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
/** Sends a given string to the attached USB host, if connected. If a host is not connected when the function is called, the
* string is discarded.
* string is discarded. Bytes will be queued for transmission to the host until either the endpoint bank becomes full, or the
* \ref CDC_Device_Flush() function is called to flush the pending data to the host. This allows for multiple bytes to be
* packed into a single endpoint packet, increasing data throughput.
*
* \note This function must only be called when the Device state machine is in the DEVICE_STATE_Configured state or
* the call will fail.
@ -170,7 +172,9 @@
ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
/** Sends a given byte to the attached USB host, if connected. If a host is not connected when the function is called, the
* byte is discarded.
* byte is discarded. Bytes will be queued for transmission to the host until either the endpoint bank becomes full, or the
* \ref CDC_Device_Flush() function is called to flush the pending data to the host. This allows for multiple bytes to be
* packed into a single endpoint packet, increasing data throughput.
*
* \note This function must only be called when the Device state machine is in the DEVICE_STATE_Configured state or
* the call will fail.

27
LUFA/Drivers/USB/Class/Device/MIDI.c
View File

@ -79,12 +79,33 @@ uint8_t MIDI_Device_SendEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInter
if ((ErrorCode = Endpoint_Write_Stream_LE(Event, sizeof(MIDI_EventPacket_t), NO_STREAM_CALLBACK)) != ENDPOINT_RWSTREAM_NoError)
return ErrorCode;
Endpoint_ClearIN();
if (!(Endpoint_IsReadWriteAllowed()))
Endpoint_ClearIN();
}
return ENDPOINT_RWSTREAM_NoError;
}
uint8_t MIDI_Device_Flush(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo)
{
if (USB_DeviceState != DEVICE_STATE_Configured)
return ENDPOINT_RWSTREAM_DeviceDisconnected;
uint8_t ErrorCode;
Endpoint_SelectEndpoint(MIDIInterfaceInfo->Config.DataINEndpointNumber);
if (Endpoint_BytesInEndpoint())
{
Endpoint_ClearIN();
if ((ErrorCode = Endpoint_WaitUntilReady()) != ENDPOINT_READYWAIT_NoError)
return ErrorCode;
}
return ENDPOINT_READYWAIT_NoError;
}
bool MIDI_Device_ReceiveEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo, MIDI_EventPacket_t* const Event)
{
if (USB_DeviceState != DEVICE_STATE_Configured)
@ -96,7 +117,9 @@ bool MIDI_Device_ReceiveEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInter
return false;
Endpoint_Read_Stream_LE(Event, sizeof(MIDI_EventPacket_t), NO_STREAM_CALLBACK);
Endpoint_ClearOUT();
if (!(Endpoint_IsReadWriteAllowed()))
Endpoint_ClearOUT();
return true;
}

17
LUFA/Drivers/USB/Class/Device/MIDI.h
View File

@ -104,7 +104,9 @@
*/
void MIDI_Device_ProcessControlRequest(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
/** Sends a MIDI event packet to the host. If no host is connected, the event packet is discarded.
/** Sends a MIDI event packet to the host. If no host is connected, the event packet is discarded. Events are queued into the
* endpoint bank until either the endpoint bank is full, or \ref MIDI_Device_Flush() is called. This allows for multiple
* MIDI events to be packed into a single endpoint packet, increasing data throughput.
*
* \note This function must only be called when the Device state machine is in the DEVICE_STATE_Configured state or
* the call will fail.
@ -117,7 +119,18 @@
uint8_t MIDI_Device_SendEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo,
MIDI_EventPacket_t* const Event) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
/** Receives a MIDI event packet from the host.
/** Flushes the MIDI send buffer, sending any queued MIDI events to the host. This should be called to override the
* \ref MIDI_Device_SendEventPacket() function's packing behaviour, to flush queued events.
*
* \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state
*
* \return A value from the \ref Endpoint_WaitUntilReady_ErrorCodes_t enum
*/
uint8_t MIDI_Device_Flush(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo);
/** Receives a MIDI event packet from the host. Events are unpacked from the endpoint, thus if the endpoint bank contains
* multiple MIDI events from the host in the one packet, multiple calls to this function will return each individual event.
*
* \note This function must only be called when the Device state machine is in the DEVICE_STATE_Configured state or
* the call will fail.

10
LUFA/Drivers/USB/Class/Host/CDC.h
View File

@ -175,7 +175,9 @@
uint8_t CDC_Host_SendControlLineStateChange(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
/** Sends a given string to the attached USB device, if connected. If a device is not connected when the function is called, the
* string is discarded.
* string is discarded. Bytes will be queued for transmission to the device until either the pipe bank becomes full, or the
* \ref CDC_Host_Flush() function is called to flush the pending data to the host. This allows for multiple bytes to be
* packed into a single pipe packet, increasing data throughput.
*
* \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
* call will fail.
@ -189,8 +191,10 @@
uint8_t CDC_Host_SendString(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo, char* Data, const uint16_t Length)
ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
/** Sends a given byte to the attached USB device, if connected. If a host is not connected when the function is called, the
* byte is discarded.
/** Sends a given byte to the attached USB device, if connected. If a device is not connected when the function is called, the
* byte is discarded. Bytes will be queued for transmission to the device until either the pipe bank becomes full, or the
* \ref CDC_Host_Flush() function is called to flush the pending data to the host. This allows for multiple bytes to be
* packed into a single pipe packet, increasing data throughput.
*
* \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
* call will fail.

27
LUFA/Drivers/USB/Class/Host/MIDI.c
View File

@ -122,6 +122,26 @@ static uint8_t DComp_MIDI_Host_NextMIDIStreamingDataEndpoint(void* const Current
return DESCRIPTOR_SEARCH_NotFound;
}
uint8_t MIDI_Host_Flush(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo)
{
if (USB_HostState != HOST_STATE_Configured)
return PIPE_RWSTREAM_DeviceDisconnected;
uint8_t ErrorCode;
Pipe_SelectPipe(MIDIInterfaceInfo->Config.DataOUTPipeNumber);
if (Pipe_BytesInPipe())
{
Pipe_ClearOUT();
if ((ErrorCode = Pipe_WaitUntilReady()) != PIPE_READYWAIT_NoError)
return ErrorCode;
}
return PIPE_READYWAIT_NoError;
}
uint8_t MIDI_Host_SendEventPacket(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo, MIDI_EventPacket_t* const Event)
{
if ((USB_HostState != HOST_STATE_Configured) || !(MIDIInterfaceInfo->State.IsActive))
@ -136,7 +156,8 @@ uint8_t MIDI_Host_SendEventPacket(USB_ClassInfo_MIDI_Host_t* const MIDIInterface
if ((ErrorCode = Pipe_Write_Stream_LE(Event, sizeof(MIDI_EventPacket_t), NO_STREAM_CALLBACK)) != PIPE_RWSTREAM_NoError)
return ErrorCode;
Pipe_ClearOUT();
if (!(Pipe_IsReadWriteAllowed()))
Pipe_ClearOUT();
}
return PIPE_RWSTREAM_NoError;
@ -153,7 +174,9 @@ bool MIDI_Host_ReceiveEventPacket(USB_ClassInfo_MIDI_Host_t* const MIDIInterface
return false;
Pipe_Read_Stream_LE(Event, sizeof(MIDI_EventPacket_t), NO_STREAM_CALLBACK);
Pipe_ClearIN();
if (!(Pipe_IsReadWriteAllowed()))
Pipe_ClearIN();
return true;
}

11
LUFA/Drivers/USB/Class/Host/MIDI.h
View File

@ -125,6 +125,17 @@
uint8_t MIDI_Host_SendEventPacket(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo,
MIDI_EventPacket_t* const Event) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
/** Flushes the MIDI send buffer, sending any queued MIDI events to the device. This should be called to override the
* \ref MIDI_Host_SendEventPacket() function's packing behaviour, to flush queued events. Events are queued into the
* pipe bank until either the pipe bank is full, or \ref MIDI_Host_Flush() is called. This allows for multiple MIDI
* events to be packed into a single pipe packet, increasing data throughput.
*
* \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state
*
* \return A value from the \ref Pipe_WaitUntilReady_ErrorCodes_t enum
*/
uint8_t MIDI_Host_Flush(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo);
/** Receives a MIDI event packet from the device.
*
* \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the

3
LUFA/ManPages/ChangeLog.txt
View File

@ -14,6 +14,9 @@
* to a target
* - Added new TemperatureDataLogger application, a USB data logger which writes to the device's dataflash and appears to
* the host as a standard Mass Storage device when inserted
* - Added MIDI event packing support to the MIDI Device and Host mode Class drivers, allowing for multiple MIDI events to
* sent or received in packed form in a single USB packet
* - Added new MIDI send buffer flush routines to the MIDI Device and Host mode Class drivers, to flush packed events
*
* <b>Changed:</b>
* - Slowed down bit-banged PDI programming in the AVRISP project slightly to prevent transmission errors

12
LUFA/ManPages/MigrationInformation.txt
View File

@ -12,7 +12,17 @@
*
* \section Sec_MigrationXXXXXX Migrating from 091223 to XXXXXX
*
* <i>There is no migration information for this release.</i>
* <b>Host Mode</b>
* - The MIDI Host Class driver send and receive routines now operate on packed events, where multiple MIDI events may be
* packed into a single USB packet. This means that the sending of MIDI events will now be delayed until the MIDI send
* pipe bank is full. To override this new behaviour and revert to the previous behaviour, the user application may manually
* flush the queued event(s) to the device by calling \ref MIDI_Host_Flush().
*
* <b>Device Mode</b>
* - The MIDI Device Class driver send and receive routines now operate on packed events, where multiple MIDI events may be
* packed into a single USB packet. This means that the sending of MIDI events will now be delayed until the MIDI send
* endpoint bank is full. To override this new behaviour and revert to the previous behaviour, the user application may manually
* flush the queued event(s) to the host by calling \ref MIDI_Device_Flush().
*
* \section Sec_Migration091223 Migrating from 091122 to 091223
*

6
Projects/AVRISP-MKII/Lib/XPROG/XPROGTarget.c
View File

@ -226,6 +226,9 @@ void XPROGTarget_EnableTargetTPI(void)
/** Disables the target's PDI interface, exits programming mode and starts the target's application. */
void XPROGTarget_DisableTargetPDI(void)
{
/* Switch to Rx mode to ensure that all pending transmissions are complete */
XPROGTarget_SetRxMode();
#if defined(XPROG_VIA_HARDWARE_USART)
/* Turn off receiver and transmitter of the USART, clear settings */
UCSR1A |= (1 << TXC1) | (1 << RXC1);
@ -249,6 +252,9 @@ void XPROGTarget_DisableTargetPDI(void)
/** Disables the target's TPI interface, exits programming mode and starts the target's application. */
void XPROGTarget_DisableTargetTPI(void)
{
/* Switch to Rx mode to ensure that all pending transmissions are complete */
XPROGTarget_SetRxMode();
#if defined(XPROG_VIA_HARDWARE_USART)
/* Turn off receiver and transmitter of the USART, clear settings */
UCSR1A |= (1 << TXC1) | (1 << RXC1);