STM32 IAP UART Bootlader

[voyvoda .]

Posted on February 19, 2018 at 08:50

Hello,

      I want to use the STM32 IAP UART Bootlarder in the CubeMX. The example is working fine. However I have a problem with my own code. When I use HAL_Delay() function, the code is crashing. If I do not use the HAL_Delay() function, everything is so good.

     What could be the problem ? Can anybody help ?

Best Regards 

#stm32-f4 #bootloader #stm32-uart-bootloader

[Andrew Neil]

Posted on February 19, 2018 at 09:51

Can anybody help ?

Not from the vague description you've given.

What debugging have you done?

When you say, 'crash' - what does that actually mean?

Some debugging tips for you:

http://www.8052.com/faqs/120313

 

http://www.ganssle.com/articles/developingagoodbedsidemanner.htm

 

[voyvoda .]

Posted on February 19, 2018 at 13:21

Hello Andrew

It waits in the while in the below code, because HAL_GetTick() always returns 0. There is no increment on the uwTick.

__weak void HAL_Delay(__IO uint32_t Delay)

{

uint32_t tickstart = HAL_GetTick();

uint32_t wait = Delay;

/* Add a period to guarantee minimum wait */

if (wait < HAL_MAX_DELAY)

{

wait++;

}

while((HAL_GetTick() - tickstart) < wait)

{

}

}

[voyvoda .]

Posted on February 19, 2018 at 13:25

I Just change the memory address at the file 'STM32F407VETx_FLASH.ld' like below.

Original:

FLASH (rx)      : ORIGIN = 0x8000000, LENGTH = 512K

Modified

FLASH (rx)      : ORIGIN = 0x8004000, LENGTH = 512K

[Mike_ST]

Posted on February 19, 2018 at 14:23

Hello,

Please make sure that you are calling the HAL_Init() function at the beginning of your main() function.

This should start the SysTick.

[voyvoda .]

Posted on February 19, 2018 at 14:31

 ,

 ,

Hello I resolve the issue by just changing the the following line in the 'stm32f407xx.h' file.

Original:

♯ define FLASH_BASE ,  ,  ,  ,  ,  , 0x08000000U

Modified:

♯ define FLASH_BASE ,  ,  ,  ,  ,  , 0x08004000U

[Mike_ST]

Posted on February 19, 2018 at 15:17

>> Modified

>> FLASH (rx)      : ORIGIN = 0x8004000, LENGTH = 512K

If you're adding 0x4000 to ORIGIN, LENGTH can't be 512K.

should be 512K - 0x4000 = 507904