Add PROGMEM variant data send functions to the CDC host class driver.

2 files changed, 69 insertions, 0 deletions

diff --git a/LUFA/Drivers/USB/Class/Host/CDCClassHost.c b/LUFA/Drivers/USB/Class/Host/CDCClassHost.c
index 9d962ef8f..94ec943c3 100644
--- a/LUFA/Drivers/USB/Class/Host/CDCClassHost.c
+++ b/LUFA/Drivers/USB/Class/Host/CDCClassHost.c
@@ -294,6 +294,24 @@ uint8_t CDC_Host_SendData(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
 	return ErrorCode;
 }
 
+uint8_t CDC_Host_SendData_P(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+                          const void* const Buffer,
+                          const uint16_t Length)
+{
+	if ((USB_HostState != HOST_STATE_Configured) || !(CDCInterfaceInfo->State.IsActive))
+	  return PIPE_READYWAIT_DeviceDisconnected;
+
+	uint8_t ErrorCode;
+
+	Pipe_SelectPipe(CDCInterfaceInfo->Config.DataOUTPipe.Address);
+
+	Pipe_Unfreeze();
+	ErrorCode = Pipe_Write_PStream_LE(Buffer, Length, NULL);
+	Pipe_Freeze();
+
+	return ErrorCode;
+}
+
 uint8_t CDC_Host_SendString(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
                             const char* const String)
 {
@@ -311,6 +329,23 @@ uint8_t CDC_Host_SendString(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
 	return ErrorCode;
 }
 
+uint8_t CDC_Host_SendString_P(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+                            const char* const String)
+{
+	if ((USB_HostState != HOST_STATE_Configured) || !(CDCInterfaceInfo->State.IsActive))
+	  return PIPE_READYWAIT_DeviceDisconnected;
+
+	uint8_t ErrorCode;
+
+	Pipe_SelectPipe(CDCInterfaceInfo->Config.DataOUTPipe.Address);
+
+	Pipe_Unfreeze();
+	ErrorCode = Pipe_Write_PStream_LE(String, strlen_P(String), NULL);
+	Pipe_Freeze();
+
+	return ErrorCode;
+}
+
 uint8_t CDC_Host_SendByte(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
                           const uint8_t Data)
 {
diff --git a/LUFA/Drivers/USB/Class/Host/CDCClassHost.h b/LUFA/Drivers/USB/Class/Host/CDCClassHost.h
index 2afe2e429..2a8157277 100644
--- a/LUFA/Drivers/USB/Class/Host/CDCClassHost.h
+++ b/LUFA/Drivers/USB/Class/Host/CDCClassHost.h
@@ -201,6 +201,24 @@
 			                          const void* const Buffer,
 			                          const uint16_t Length) ATTR_NON_NULL_PTR_ARG(1);
 
+			/** Sends a given data buffer from PROGMEM space to the attached USB device, if connected. If a device is not connected when the
+			 *  function is called, the string is discarded. Bytes will be queued for transmission to the host until either the pipe
+			 *  bank becomes full, or the \ref CDC_Host_Flush() function is called to flush the pending data to the device. This allows
+			 *  for multiple bytes to be packed into a single pipe packet, increasing data throughput.
+			 *
+			 *  \pre This function must only be called when the Host state machine is in the \ref 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]     Buffer            Pointer to a buffer containing the data to send to the device.
+			 *  \param[in]     Length            Length of the data to send to the host.
+			 *
+			 *  \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
+			 */
+			uint8_t CDC_Host_SendData_P(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+			                            const void* const Buffer,
+			                            const uint16_t Length) ATTR_NON_NULL_PTR_ARG(1);
+
 			/** Sends a given null-terminated string to the attached USB device, if connected. If a device is not connected when the
 			 *  function is called, the 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 device. This allows
@@ -217,6 +235,22 @@
 			uint8_t CDC_Host_SendString(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
 			                            const char* const String) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
 
+			/** Sends a given null terminated string from PROGMEM space to the attached USB device, if connected. If a device is not connected
+			 *  when the function is called, the 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 device. This allows for multiple bytes to be packed into a single pipe packet, increasing data throughput.
+			 *
+			 *  \pre This function must only be called when the Host state machine is in the \ref 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]     String            Pointer to the null terminated string to send to the host.
+			 *
+			 *  \return A value from the \ref Pipe_Stream_RW_ErrorCodes_t enum.
+			 */
+			uint8_t CDC_Host_SendString_P(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+			                              const char* const String) 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 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