About Szymon M

Szymon M · 2019-02-15

I'm currently writing a program on STM32F411 that uses a simple bootloader and two sub-applications. The sub-applications are located in the flash memory and the bootloader loads one of them (both code and data) into the RAM memory and then starts ex...

Szymon M · 2018-06-28

Posted on June 28, 2018 at 14:01The original post was too long to process during our migration. Please click on the attachment to read the original post.

Szymon M · 2019-02-17

Okay, It turned out I had to add ALIGN_WITH_INPUT to the .data section in the linker script. Like this: .data : ALIGN_WITH_INPUT { . = ALIGN(4); *(.data) /* .data sections */ *(.data*) /* .data* sections */ . = A...

Szymon M · 2019-02-16

Yeah, thank you. Making the sub-application responsible for its data initialization seems smarter than making bootloader responsible for all of this. Anyway, I still don't know where does this gap in my main post comes from.When I add some big alignm...

Szymon M · 2019-02-15

@Pavel A. I've asked it on the stack overflow already, got less attention ;)@Community member The problem is that my bootloaderer is linked separately (project requirement), it has absolutely no insight into the sub-application's symbols, so defi...

Szymon M · 2018-06-29

Posted on June 29, 2018 at 19:34You are my hero!The problem was with proper alignment of the vector table. Firstly, it had to be aligned on a 512 byte boundary as you suggested. Secondly, I placed vector table at the start of the sections, before th...

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Strange padding in the .data section of the .elf file

Problem with interrupts while executing code from RAM

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