Corrected the Rx frame length mask when obtaining the length from the rx descriptor.

Demo/lwIP_Demo_Rowley_ARM7/EMAC/SAM7_EMAC.c

@@ -54,6 +54,11 @@ Changes from V4.0.1
 	+ Made the function vClearEMACTxBuffer() more robust by moving the index
 	  manipulation into the if() statement.  This allows the tx interrupt to
 	  execute even when there is no data to handle.
+
+Changes from V4.0.4
+
+	+ Corrected the Rx frame length mask when obtaining the length from the
+	  rx descriptor.
 */
 
 
@@ -128,6 +133,9 @@ one not be immediately available when trying to transmit a frame. */
 #define emacRESET_KEY				( ( unsigned portLONG ) 0xA5000000 )
 #define emacRESET_LENGTH			( ( unsigned portLONG ) ( 0x01 << 8 ) )
 
+/* The Atmel header file only defines the TX frame length mask. */
+#define emacRX_LENGTH_FRAME			( 0xfff )
+
 /*-----------------------------------------------------------*/
 
 /* Buffer written to by the EMAC DMA.  Must be aligned as described by the
@@ -323,7 +331,7 @@ register unsigned portLONG ulIndex, ulLength = 0;
 	frame.  The last buffer will give us the length of the entire frame. */
 	while( ( xRxDescriptors[ ulIndex ].addr & AT91C_OWNERSHIP_BIT ) && !ulLength )
 	{
-		ulLength = xRxDescriptors[ ulIndex ].U_Status.status & AT91C_LENGTH_FRAME;
+		ulLength = xRxDescriptors[ ulIndex ].U_Status.status & emacRX_LENGTH_FRAME;
 
 		/* Increment to the next buffer, wrapping if necessary. */
 		ulIndex++;

Demo/uIP_Demo_IAR_ARM7/EMAC/SAM7_EMAC.c

@@ -57,6 +57,12 @@ Changes from V3.2.4
 	+ Also read the EMAC_RSR register in the EMAC ISR as a work around the 
 	  the EMAC bug that can reset the RX bit in EMAC_ISR register before the
 	  bit has been read.
+
+Changes from V4.0.4
+
+	+ Corrected the Rx frame length mask when obtaining the length from the
+	  rx descriptor.
+
 */
 
 /* Standard includes. */
@@ -105,6 +111,9 @@ one not be immediately available when trying to transmit a frame. */
 #define emacRESET_KEY				( ( unsigned portLONG ) 0xA5000000 )
 #define emacRESET_LENGTH			( ( unsigned portLONG ) ( 0x01 << 8 ) )
 
+/* The Atmel header file only defines the TX frame length mask. */
+#define emacRX_LENGTH_FRAME			( 0xfff )
+
 /*-----------------------------------------------------------*/
 
 /*
@@ -344,7 +353,7 @@ portCHAR *pcSource;
 	while( ( xRxDescriptors[ ulNextRxBuffer ].addr & AT91C_OWNERSHIP_BIT ) && !ulSectionLength )
 	{
 		pcSource = ( portCHAR * )( xRxDescriptors[ ulNextRxBuffer ].addr & emacADDRESS_MASK );
-		ulSectionLength = xRxDescriptors[ ulNextRxBuffer ].U_Status.status & AT91C_LENGTH_FRAME;
+		ulSectionLength = xRxDescriptors[ ulNextRxBuffer ].U_Status.status & emacRX_LENGTH_FRAME;
 
 		if( ulSectionLength == 0 )
 		{