stm32 does not working in Eth IAP bootloader mode

[hzTurqay]

Hi everyone

i have connected ethernet to stm32f4vet6 mcu. i am using LWIP and tcp_echoserver provided by stm and tftp server also provided by stm.

Now i am facing with an issue , i have two programs , first of them is LWIP_TFTP_BOOT, which has start flash adress of 0x8000000. here is the code :

	while(!HAL_GPIO_ReadPin(GPIOE, GPIO_PIN_10)){
		 MX_LWIP_Init();
		 tcp_echoserver_init();
	 do
	 {
		 MX_LWIP_Process();

		 if(enterBootloader == 25)
		 {
			 enterBootloader = 0;
			 IAP_tftpd_init();
			 refus = uwTick;

			 while(1)
			 {
				 MX_LWIP_Process();

				 if((uwTick >= (refus+20000))||(enterBootloader == 30))
				 {
					 HAL_NVIC_SystemReset();
				 }
			 }
		 }
	 }while(uwTick < (refus+20000));
	}

	 if (((*(__IO uint32_t*)USER_FLASH_FIRST_PAGE_ADDRESS) & 0x2FFE0000) == 0x20020000)
	 {
		 JumpAddress = *(__IO uint32_t*) (USER_FLASH_FIRST_PAGE_ADDRESS + 4);
		 Jump_To_Application = (pFunction) JumpAddress;

		 __set_MSP(*(__IO uint32_t*) USER_FLASH_FIRST_PAGE_ADDRESS);
		 Jump_To_Application();
		 while(1);
	 }
	 else
	 {
		 while(1){

		 }
	 }

it uploads and works fine ,  everything is okay here, then i have another code LWIP_TCP_APP which has start flash adress is 0x8020000 and flash size 512 - 128 K. LWIP_TCP_APP code is for updating the stm32 over ethernet , means once i upload the LWIP_TFTP_BOOT code , it will work in boot mode and other times i will upload the code to stm32 via ethernet. 

here is my problem , when LWIP_TCP_APP code is only consists of led blinks and etc , it works just fine , but when i include ethernet and tcp functions in it , when the code reachs to MX_LWIP_Process() line mcu just stops and does nothing. when i debug the code reaches to this line : 

netif_add(&gnetif, &ipaddr, &netmask, &gw, NULL, &ethernetif_init, &ethernet_input);

and then just stops , it stuck there. 

i think the netif_add tries to reach to memory adress above 0x8020000 so it stucks, but i have no idea how to solve it. 

can you guys please share your ideas?

thanx you very much.

[hzTurqay]

C'mon guys , there must be someone know something about this topic

[LCE]

You don't de-init anything, maybe that's the problem.

I'll have to build an ethernet bootloader for H7 soon, I'm not there yet, but I remember having seen that before jumping between app or bootloader, each and every peripheral must be de-initialized cleanly. And initialized anew if used.

[hzTurqay]

i did try that but does not work , i will try it again