flash_add_block: unaligned block

[sinosoidal]

Hi,

We been using your stlink project in order to program STM32F4XX chips.

Recently we have upgraded the chip on our system to STM32F427VG and one curious thing started to happen. I don't now if this is a bug or something i'm doing wrong.

We are using st-util tool to be able to program the chip thru gdb. Since we changed chip, doing a load on gdb, I get the following error:

flash_add_block: unaligned block

I tried to reverse engineer the source code in order to understand why, and it doesn't make sense. This error happens when:

addr % FLASH_PAGE != 0 || length % FLASH_PAGE != 0

Addr in this case is 0x8020000 and flash page is 128k
length is about 80k which is less than 128k, so this devision doesn't give a zero remaining and it fails.

In order to continue using this tool I had removed the second condition and everything works as expect.

What I can't understand is why, because with the last chip it worked (STM32F405) and the memory layout was exactly the same.

Since I'm not sure if this is a bug or an unpredicted case, I have decided to report my experience.

Thanks for this awesome project.

[iabdalkader]

I'm having the same issue, I don't think it has anything to do with the MCU ( it's an STM32F429 anyway), I think it assumes that length is a multiple of the current sector size (PAGE_SIZE), for some reason, so if your ld script starts on some sector which is not, it fails.

[Nightwalker-87]

Fixed in #251.