FreeRTOS+TCP will not reply ping after unplug/plug eth cable when sending data

[michaelv]

@tony-josi-aws

Can you put a breakpoint in this line and check if the read/write with PHY are still successful by checking the return value of HAL_ETH_ReadPHYRegister after the ETH cable disconnection?

The return value is successful, but I had to alter the xSTM32_PhyRead() and xSTM32_PhyWrite() because of access issue of my PHY.

@tony-josi-aws

Where is this log: xSTM32F_NetworkInterfaceInitialise returns 1 coming from?

It comes from @htibosch suggestion:

@htibosch

Would it be possible for you to add some logging? Most importantly when the Link Status changes, when FreeRTOS_NetworkDown() is called and when xxx_NetworkInterfaceInitialise() returns a value different from the last time, like this:

    {
        static BaseType_t xLast = 1;
        if( xLast != xResult )
        {
            xLast = xResult;
            FreeRTOS_printf( ( "xxx_NetworkInterfaceInitialise returns %d\n", ( int ) xResult ) );
        }
    }

@tony-josi-aws

Also, can you share the copy stm32 network interface file you use to associate the logs that you have shared with control flow?

Here is the log again, and I’ve attached my NetworkInterface file.

FreeRTOS_AddEndPoint: MAC: 48-5c IPv4: ac1601e9ip
FreeRTOS_NetworkDown is called
xPhyReset: phyBMCR_RESET 0 ready
+TCP: advertise: 0101 config 3100
prvEthernetUpdateConfig: LS mask 00 Force 1
xSTM32F_NetworkInterfaceInitialise returns 0
xPhyCheckLinkStatus: PHY LS now 01
prvEMACHandlerTask LS has changed
prvEthernetUpdateConfig: LS mask 01 Force 0
Network buffers: 57 lowest 57
Heap: current 3360 lowest 3360
FreeRTOS_NetworkDown is called
Link Status is high
xSTM32F_NetworkInterfaceInitialise returns 1
Heap: current 1728 lowest 1728
xPhyCheckLinkStatus: PHY LS now 00
prvEMACHandlerTask LS has changed
prvEthernetUpdateConfig: LS mask 00 Force 0
FreeRTOS_NetworkDown is called
xSTM32F_NetworkInterfaceInitialise returns 0
FreeRTOS_NetworkDown is called
FreeRTOS_NetworkDown is called
FreeRTOS_NetworkDown is called
FreeRTOS_NetworkDown is called
FreeRTOS_NetworkDown is called
FreeRTOS_NetworkDown is called
FreeRTOS_NetworkDown is called
FreeRTOS_NetworkDown is called
FreeRTOS_NetworkDown is called
FreeRTOS_NetworkDown is called
FreeRTOS_NetworkDown is called
FreeRTOS_NetworkDown is called

NetworkInterface.c (55.5 KB)