Add hardware bug workaround for auto-negotiate errata.

git-svn-id: https://freertos.svn.sourceforge.net/svnroot/freertos/trunk@691 1d2547de-c912-0410-9cb9-b8ca96c0e9e2

1 files changed, 16 insertions, 3 deletions

diff --git a/Demo/ColdFire_MCF52233_Eclipse/RTOSDemo/webserver/FEC.c b/Demo/ColdFire_MCF52233_Eclipse/RTOSDemo/webserver/FEC.c
index 98d082da..ac6ff649 100644
--- a/Demo/ColdFire_MCF52233_Eclipse/RTOSDemo/webserver/FEC.c
+++ b/Demo/ColdFire_MCF52233_Eclipse/RTOSDemo/webserver/FEC.c
@@ -81,8 +81,8 @@ static unsigned portBASE_TYPE uxNextRxBuffer = 0, uxIndexToBufferOwner = 0;
 

 /*-----------------------------------------------------------*/

 

-/* 

- * Enable all the required interrupts in the FEC and in the interrupt controller. 

+/*

+ * Enable all the required interrupts in the FEC and in the interrupt controller.

  */

 static void prvEnableFECInterrupts( void );

 

@@ -95,7 +95,7 @@ static void prvResetFEC( portBASE_TYPE xCalledFromISR );
 

 /*

  * FUNCTION ADAPTED FROM FREESCALE SUPPLIED SOURCE

- * 

+ *

  * Write a value to a PHY's MII register.

  *

  * Parameters:

@@ -370,6 +370,7 @@ void vFECInit( void )
 {

 unsigned portSHORT usData;

 struct uip_eth_addr xAddr;

+unsigned portBASE_TYPE ux;

 

 /* The MAC address is set at the foot of FreeRTOSConfig.h. */

 const unsigned portCHAR ucMACAddress[6] =

@@ -451,6 +452,18 @@ const unsigned portCHAR ucMACAddress[6] =
 		/* Wait for auto negotiate to complete. */

 		do

 		{

+			ux++;

+			if( ux > 10 )

+			{

+				/* Hardware bug workaround!  Force 100Mbps half duplex. */

+				while( !fec_mii_read( configPHY_ADDRESS, 0, &usData ) ){};

+				usData &= ~0x2000;							/* 10Mbps */

+				usData &= ~0x0100;							/* Half Duplex */

+				usData &= ~0x1000;							/* Manual Mode */

+				while( !fec_mii_write( configPHY_ADDRESS, 0, usData ) ){};

+				while( !fec_mii_write( configPHY_ADDRESS, 0, (usData|0x0200) )){}; /* Force re-negotiate */

+				break;

+			}

 			vTaskDelay( fecLINK_DELAY );

 			fec_mii_read( configPHY_ADDRESS, PHY_BMSR, &usData );