Bootloader HOLD Mode on STM32F4?

[ilmenator]

I can't find a jumper on the STM32F4 core board for the bootloader hold mode - what is the easiest way to get my core board back to life after it crashes with a hard fault during init?

 

Thanks, ilmenator

[mono]

...had the same problem before! for me the easiest way was to re-flash the mios-bootloader. i know, it sounds silly, but it does the job...:D

 

mOnO

[ilmenator]

Yes, that's what I am doing, too - I just thought there might be a smarter way than plugging and unplugging USB cables. E.g. pressing and holding the "User" button on the Discovery board while powering up the unit... :smile:

[TK.]

There is actually a very smart way: read the newbie documentation... ;-)

-> http://www.ucapps.de/mios32_bootstrap_newbies.html

 

Quote:

 

• MBHP_CORE_STM32F4 and STM32F4DISCOVERY: press and hold the blue "User" button, trigger the black "Reset" button shortly. This will restart the core and enforce bootloader mode as long as the blue "User" button is pressed.

 

Depending on the OS you are using at the host side (Windows, MacOS, Linux) it might be required to restart MIOS Studio in order to connect to the "safe" USB interface port.

 

Best Regards, Thorsten.

[ilmenator]

RTFM strikes again - I was pretty sure something like that was implemented, but I didn't see this in the docu... my bad!