Do you have a serial console available? If so, you could use printf debugging <https://www.cs.colostate.edu/~fsieker/misc/debug/DEBUG.html> to determine where in the boot sequence it fails. I've done this with NuttX successfully on the SAMA5.
-adam On Sun, Jun 21, 2020 at 12:13 PM Matias N. <mat...@imap.cc> wrote: > I've been having a very weird problem and I thought to ask if anyone else > suffered this by any chance. I have a board with reset line with pull-up > and a switch to tie the line to ground (with a capacitor in parallel) as > per typical STM32 circuit. This line also is exposed to the SWD connector. > When I build without size optimizations, the board works as expected: it > comes up normally and can be reset with the button. SWD also is able to > reset it for debugging. When I disable optimizations, the board does not > boot again even when pressing the reset button. It only boots normally if I > start debugging with OCD, which issues the reset from there. Since with the > debugger it boots normally this is impossible to debug. > Any similar experience? > > Best, > Matias -- Adam Feuer <a...@starcat.io>
