Led roulette blocks execution when using STM32F3348-DISCO about discovery HOT 4 OPEN

The STM32F3DISCOVERY has a STM32F303VCT6 microcontroller while your board has a STM32F334C8. The 33x and 30x series are going to be similar in terms of peripherals, but not fully compatible. Differences such as a peripheral being at a different address, or simply because they have different amounts of RAM and/or Flash, can cause the HardFault exception to be raised, as you have seen.

You'll need to look at forking the japaric/f3 repo and patching it to support the STM32F3x4 line instead of the STM32F30x line, or skipping the F3 crate entirely and using a lower-level crate like https://github.com/adamgreig/stm32-rs/blob/master/stm32f3/src/lib.rs.

from discovery.

Great, I'll do that!

Thanks

from discovery.

hi all,

any update on this? (I have rhe same problem)

do you have a memory.x for this MCU?

thanks,
Mark

from discovery.

OK.. I'll answer my own question... by updating the memory.x for the f3 crate to the one below, I can now get it to work:

MEMORY
{
CCRAM : ORIGIN = 0x10000000, LENGTH = 8K
FLASH : ORIGIN = 0x08000000, LENGTH = 64K
RAM : ORIGIN = 0x20000000, LENGTH = 16K
}

_stack_start = 0x20001000;

from discovery.