32f429i-discovery firmware upgrade

[bhakan]

Posted on January 21, 2016 at 20:26

When we have tried firmware upgrade process according to the sample bin file. (STM32F429I-Discovery_LTDC_ColorKeying_0x08020000.bin) , it works well. But when we compile LTDC_ColorKeying sample codes and generate bin file by us, our generated bin file did not overlap FW_Upgrade process. We could not know what kind of codes changed by ST that  generated bin file in  STM32F429I-Discovery_FW_V1.0.1\Projects\FW_upgrade\Binary folder.

Is it possible to provide open source of STM32F429I-Discovery_LTDC_ColorKeying_0x08020000 sample for TrueSTUDIO  ??

Thanks

[Tesla DeLorean]

Posted on January 21, 2016 at 20:54

The changed the linker script to place the code at 0x08020000, and also the vector table address in the system_stm32f4xx.c file. Review your .MAP file, confirm the image is correctly placed.

[bhakan]

Posted on January 22, 2016 at 17:54

Thanks for reply. We have modified codes according to your direction in linker script file and system_stm32f4xx.c file. But did not work.

In addition when i changed from _estack = 0x020030000 to _estack=0x20000420 in linker file , the firmware upgrade process worked well. (i saw this memory value in original bin file of ST. I mean, 0x0802000 adress value was 0x20000420 in flash memory)

Could you explain why 0x20000420 was correct value to jump for the my generated application bin file ? 

[Tesla DeLorean]

Posted on January 22, 2016 at 18:26

You must pick an initial stack address that passes this test

STM32F429I-Discovery_FW_V1.0.1\Projects\FW_upgrade\src\main.c

/* Check Vector Table: Test if user code is programmed starting from address
''APPLICATION_ADDRESS'' */
if (((*(__IO uint32_t*)APPLICATION_ADDRESS) & 0x2FFE0000 ) == 0x20000000)
{
/* Jump to user application */

So falling in 0x20000000..0x2001FFFC