It sounds like you might be trying to use a 'new' style startup.s file? Generally they're pretty much the same between different F4 chips, so you could try using one of the ones that you know works?
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
It sounds like you might be trying to use a 'new' style
startup.s
file? Generally they're pretty much the same between different F4 chips, so you could try using one of the ones that you know works?