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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.

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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
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17
LUFA/Drivers/USB/Class/Device/MIDI.h
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@ -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.