Working Example for FreeRTOS+TCP and STM32F7

Libraries
8

wire shark, but I have no experience with it

Just start it up and make sure that you choose the correct ( LAN ) adapter.

Here is an example of 3 types of ARP messages:

arp
arp776×134 6.18 KB

Note the filter on the top, I filled in the protocol name “arp”.

The big question is: can you device send and can it receive packets? The first thing to check is the PHY Link Status: does it get up?

I did notice one thing though, there is no phyHandling.h/.c in your or the Amazon repo.

You find the latest in my Github repo: phyHandling.c and phyHandling.h
This PHY handler can be used for any 100 Mbps PHY on any platform.

I’m using one that I found somewhere but could the problem be in this file?

There could be a small extension but nothing essential.

there were two compilation errors for missing declarations from xApplicationGetRandomNumber()

Yes, please look at PR #1494. The global function ulRand32() returns zero when it fails. But zero is a valid random number.

This is the implementation that I used for the STM32Fx platform:

BaseType_t xApplicationGetRandomNumber( uint32_t *pulValue )
{
HAL_StatusTypeDef xResult;
BaseType_t xReturn;
uint32_t ulValue;

	xResult = HAL_RNG_GenerateRandomNumber( &hrng, &ulValue );
	if( xResult == HAL_OK )
	{
		xReturn = pdPASS;
		*pulValue = ulValue;
	}
	else
	{
		xReturn = pdFAIL;
	}
	return xReturn;
}

and xCheckLoopback()

That is an idea that hasn’t made it to becoming a pull-request yet: it adds a “loop-back device”. If the target IP address is the address of the adapter, the packet will be bounced back to the IP-task. Good for self-testing without physical network.

You see it implemented in FreeRTOS_ARP.c but the code is disabled with a #if 0.