X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/9ea891ea201a3ef897b108c7a9431d36cadfafae..de8c9445d478dc31dab7e042c9c2943d0758bbb3:/LUFA/Drivers/USB/Class/Device/HID.h

diff --git a/LUFA/Drivers/USB/Class/Device/HID.h b/LUFA/Drivers/USB/Class/Device/HID.h
index dee892d06..4865a1243 100644
--- a/LUFA/Drivers/USB/Class/Device/HID.h
+++ b/LUFA/Drivers/USB/Class/Device/HID.h
@@ -77,7 +77,14 @@
 					void*    PrevReportINBuffer; /** Pointer to a buffer where the previously created HID input report can be
 					                              *  stored by the driver, for comparison purposes to detect report changes that
 					                              *  must be sent immediately to the host. This should point to a buffer big enough
-					                              *  to hold the largest HID input report sent from the HID interface.
+					                              *  to hold the largest HID input report sent from the HID interface. If this is set
+												  *  to NULL, it is up to the user to force transfers when needed in the 
+												  *  \ref CALLBACK_HID_Device_CreateHIDReport() callback function.
+												  *
+												  *  \note Due to the single buffer, the internal driver can only correctly compare
+												  *        subsequent reports with identical report IDs. In multiple report devices,
+												  *        this buffer should be set to NULL and the decision to send reports made
+												  *        by the user application instead.
 					                              */
 					uint8_t  PrevReportINBufferSize; /** Size in bytes of the given input report buffer. This is used to create a
 					                                  *  second buffer of the same size within the driver so that subsequent reports