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.

1 files changed, 6 insertions, 2 deletions

diff --git a/LUFA/Drivers/USB/Class/Device/CDC.h b/LUFA/Drivers/USB/Class/Device/CDC.h
index 30d3526b3..617410b11 100644
--- a/LUFA/Drivers/USB/Class/Device/CDC.h
+++ b/LUFA/Drivers/USB/Class/Device/CDC.h
@@ -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.