Initial restructuring of the core USB driver module to support multiple architectures in the future.

1 files changed, 53 insertions, 0 deletions

diff --git a/LUFA/Drivers/USB/Core/Template/Template_Pipe_RW.c b/LUFA/Drivers/USB/Core/Template/Template_Pipe_RW.c
new file mode 100644
index 000000000..147ce5ad4
--- /dev/null
+++ b/LUFA/Drivers/USB/Core/Template/Template_Pipe_RW.c
@@ -0,0 +1,53 @@
+uint8_t TEMPLATE_FUNC_NAME (TEMPLATE_BUFFER_TYPE const Buffer,
+                            uint16_t Length,
+                            uint16_t* const BytesProcessed)
+{
+	uint8_t* DataStream      = ((uint8_t*)Buffer + TEMPLATE_BUFFER_OFFSET(Length));
+	uint16_t BytesInTransfer = 0;
+	uint8_t  ErrorCode;
+
+	Pipe_SetPipeToken(TEMPLATE_TOKEN);
+
+	if ((ErrorCode = Pipe_WaitUntilReady()))
+	  return ErrorCode;
+
+	if (BytesProcessed != NULL)
+	{
+		Length -= *BytesProcessed;
+		TEMPLATE_BUFFER_MOVE(DataStream, *BytesProcessed);
+	}
+	
+	while (Length)
+	{
+		if (!(Pipe_IsReadWriteAllowed()))
+		{
+			TEMPLATE_CLEAR_PIPE();
+
+			if (BytesProcessed != NULL)
+			{
+				*BytesProcessed += BytesInTransfer;
+				return PIPE_RWSTREAM_IncompleteTransfer;
+			}
+
+			if ((ErrorCode = Pipe_WaitUntilReady()))
+			  return ErrorCode;
+		}
+		else
+		{
+			TEMPLATE_TRANSFER_BYTE(DataStream);
+			TEMPLATE_BUFFER_MOVE(DataStream, 1);
+			Length--;
+			BytesInTransfer++;
+		}
+	}
+
+	return PIPE_RWSTREAM_NoError;
+}
+
+#undef TEMPLATE_FUNC_NAME
+#undef TEMPLATE_BUFFER_TYPE
+#undef TEMPLATE_TOKEN
+#undef TEMPLATE_TRANSFER_BYTE
+#undef TEMPLATE_CLEAR_PIPE
+#undef TEMPLATE_BUFFER_OFFSET
+#undef TEMPLATE_BUFFER_MOVE