32F769-DISCO CubeMX 5.0.1 Ethernet Initialization hangs

[Joerg Wagner]

Hello all,

I built with CubeMX 5.0.1 a project from scratch using the default settings.

The modifications:

MMC --> SD (otherwise it wouldn't run. Probably ST will change it someday)

LWIP enabled with fixed IP addresses

Added two lines to blink a LED

Compilation is okay.

Run the software and it will hang at:

Thread #1 (Suspended : Signal : SIGINT:Interrupt)	
	HAL_GetTick() at stm32f7xx_hal.c:319 0x80020c6	
	HAL_Delay() at stm32f7xx_hal.c:382 0x80020ea	
	HAL_ETH_Init() at stm32f7xx_hal_eth.c:289 0x800383a	
	low_level_init() at ethernetif.c:253 0x80087a8	
	ethernetif_init() at ethernetif.c:606 0x8008968	
	netif_add() at netif.c:310 0x800ae4a	
	MX_LWIP_Init() at lwip.c:110 0x800854e	
	StartDefaultTask() at main.c:1.707 0x80010aa	
	pvTaskIncrementMutexHeldCount() at tasks.c:4.188 0x800a008	

In the meantime I bought a DISC1 board with a STM32F769 version Z but this it's not the solution. I also changed the default Timer TIM6 for SysTick with TIM14.

Why is it so difficult to create a simple Hello_world_program with CubeMX which will run properly? Any idea to fix the problem?

Thank you.

[Joerg Wagner · Accepted solution]

If someone like me get stucked:

Disable IWDG (or refresh it). It is set by default and this can be a trap.

After creating a default project with CubeMX 5.0.1 for the Discovery-F769

you have to change MMC to SD and take care about or disable the Watchdogs WWDG and IWDG.

Otherwise your board will stop at a specific time and you wonder why the current

function resource does not work.