> Is this a dual bank part? Is so you can avoid the bus lock by operating on > the other bank.
Well, eventually this is what I ended up using. It works perfectly in this configuration. It is just that memory mapping had to be changed, and this ended up to be an effort. > Yes, they are called ramfuncs and are automatically copied to RAM at > boot time. This does not appear to be implemented for STM32F4, but > search for referernces to CONFIG_ARCH_RAMFUNCS or ramfuncs in arch/ and > include/ Hmm, this seems very interesting. I will spend some time checking on this feature. Thank you all! Στις Τρί, 30 Νοε 2021 στις 4:22 μ.μ., ο/η Gregory Nutt <spudan...@gmail.com> έγραψε: > > > I think it may be necessary to put some parts of the NuttX kernel into > RAM > > so that it can keep executing while the bus is stuck. > > > > I don't know off the top of my head whether we currently have a built-in > > way to do that. > > Yes, they are called ramfuncs and are automatically copied to RAM at > boot time. This does not appear to be implemented for STM32F4, but > search for referernces to CONFIG_ARCH_RAMFUNCS or ramfuncs in arch/ and > include/ > > $ find arch -name *_start.* | xargs grep -i CONFIG_ARCH_RAMFUNCS > $ grep -r ramfuncs boards > >
