Added the ability to use an alternative function to copy data in stream buffers. Useful for optimization in systems that allow DMA to be used only in some memory areas.

Author: devprodest

source/FreeRTOS_Stream_Buffer.c

@@ -293,15 +293,15 @@ size_t uxStreamBufferAdd( StreamBuffer_t * const pxBuffer,
             const size_t uxFirst = FreeRTOS_min_size_t( uxLength - uxNextHead, uxCount );
 
             /* Write as many bytes as can be written in the first write. */
-            ( void ) memcpy( &( pxBuffer->ucArray[ uxNextHead ] ), pucData, uxFirst );
+            ( void ) pvPortMemCpyStreamBuffer( &( pxBuffer->ucArray[ uxNextHead ] ), pucData, uxFirst );
 
             /* If the number of bytes written was less than the number that
              * could be written in the first write... */
             if( uxCount > uxFirst )
             {
                 /* ...then write the remaining bytes to the start of the
                  * buffer. */
-                ( void ) memcpy( pxBuffer->ucArray, &( pucData[ uxFirst ] ), uxCount - uxFirst );
+                ( void ) pvPortMemCpyStreamBuffer( pxBuffer->ucArray, &( pucData[ uxFirst ] ), uxCount - uxFirst );
             }
         }
 
@@ -394,14 +394,14 @@ size_t uxStreamBufferGet( StreamBuffer_t * const pxBuffer,
 
             /* Obtain the number of bytes it is possible to obtain in the first
              * read. */
-            ( void ) memcpy( pucData, &( pxBuffer->ucArray[ uxNextTail ] ), uxFirst );
+            ( void ) pvPortMemCpyStreamBuffer( pucData, &( pxBuffer->ucArray[ uxNextTail ] ), uxFirst );
 
             /* If the total number of wanted bytes is greater than the number
              * that could be read in the first read... */
             if( uxCount > uxFirst )
             {
                 /* ...then read the remaining bytes from the start of the buffer. */
-                ( void ) memcpy( &( pucData[ uxFirst ] ), pxBuffer->ucArray, uxCount - uxFirst );
+                ( void ) pvPortMemCpyStreamBuffer( &( pucData[ uxFirst ] ), pxBuffer->ucArray, uxCount - uxFirst );
             }
         }
 

source/include/FreeRTOSIPConfigDefaults.h

@@ -2151,10 +2151,33 @@ STATIC_ASSERT( ipconfigSOCK_DEFAULT_SEND_BLOCK_TIME <= portMAX_DELAY );
     #define vPortFreeSocket( ptr )    vPortFree( ptr )
 #endif
 
+/*===========================================================================*/
+/*                              SOCKET CONFIG                                */
+/*===========================================================================*/
+/*---------------------------------------------------------------------------*/
+/*===========================================================================*/
+/*---------------------------------------------------------------------------*/
+/*===========================================================================*/
+/*                          STREAM BUFFER CONFIG                             */
+/*===========================================================================*/
+
+/*---------------------------------------------------------------------------*/
+
+/*
+ * pvPortMemCpyStreamBuffer
+ *
+ * Function to copy data into the stream buffer when sending 
+ * and copy data from the stream buffer when receiving.
+ */
+
+ #ifndef pvPortMemCpyStreamBuffer
+ #define pvPortMemCpyStreamBuffer( dst, src, count ) memcpy( dst, src, count )
+ #endif
+
 /*---------------------------------------------------------------------------*/
 
 /*===========================================================================*/
-/*                              SOCKET CONFIG                                */
+/*                          STREAM BUFFER CONFIG                             */
 /*===========================================================================*/
 /*---------------------------------------------------------------------------*/
 /*===========================================================================*/