X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/7f9f97c792dee6875fbca9806422bdd7d6c5a657..d11ed10c5314c44dc01c06954d1d73d4894cbff8:/LUFA/Drivers/USB/Class/Host/CDC.h

diff --git a/LUFA/Drivers/USB/Class/Host/CDC.h b/LUFA/Drivers/USB/Class/Host/CDC.h
index d2e98c0fa..466f141db 100644
--- a/LUFA/Drivers/USB/Class/Host/CDC.h
+++ b/LUFA/Drivers/USB/Class/Host/CDC.h
@@ -89,11 +89,6 @@
 					uint16_t DataOUTPipeSize;  /**< Size in bytes of the CDC interface's OUT data pipe */
 					uint16_t NotificationPipeSize;  /**< Size in bytes of the CDC interface's IN notification pipe, if used */
 					
-					bool BidirectionalDataEndpoints; /**< Indicates if the attached CDC interface uses bidirectional data endpoints,
-					                                  *   and this has only the IN pipe configured (with \ref Pipe_SetPipeToken()
-					                                  *   used to switch the pipe's direction)
-					                                  */
-
 					struct
 					{
 						uint8_t HostToDevice; /**< Control line states from the host to device, as a set of CDC_CONTROL_LINE_OUT_*
@@ -175,7 +170,12 @@
 			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.
 			 *
 			 *  \param[in,out] CDCInterfaceInfo  Pointer to a structure containing a CDC Class host configuration and state
 			 *  \param[in] Data  Pointer to the string to send to the device
@@ -186,8 +186,13 @@
 			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.
 			 *
 			 *  \param[in,out] CDCInterfaceInfo  Pointer to a structure containing a CDC Class host configuration and state
 			 *  \param[in] Data  Byte of data to send to the device
@@ -198,6 +203,9 @@
 
 			/** Determines the number of bytes received by the CDC interface from the device, waiting to be read.
 			 *
+			 *  \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
+			 *        call will fail.
+			 *
 			 *  \param[in,out] CDCInterfaceInfo  Pointer to a structure containing a CDC Class host configuration and state
 			 *
 			 *  \return Total number of buffered bytes received from the device
@@ -208,6 +216,9 @@
 			 *  returns 0. The \ref CDC_Host_BytesReceived() function should be queried before data is received to ensure that no data
 			 *  underflow occurs.
 			 *
+			 *  \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
+			 *        call will fail.
+			 *
 			 *  \param[in,out] CDCInterfaceInfo  Pointer to a structure containing a CDC Class host configuration and state
 			 *
 			 *  \return Next received byte from the device, or 0 if no data received
@@ -216,6 +227,9 @@
 			
 			/** Flushes any data waiting to be sent, ensuring that the send buffer is cleared.
 			 *
+			 *  \note This function must only be called when the Host state machine is in the HOST_STATE_Configured state or the
+			 *        call will fail.
+			 *
 			 *  \param[in,out] CDCInterfaceInfo  Pointer to a structure containing a CDC Class host configuration and state
 			 *
 			 *  \return A value from the \ref Pipe_WaitUntilReady_ErrorCodes_t enum