Hi All
I understand that by holding the button down on the Teensy 4 for 15s will cause the reference program stored at the end of the QSPI flash to be loaded so that a "known-good" program runs.
I see that the code is located at 0x601ff000 and occupies the last 4k of space but is it protected in any way? What happens if a mass erase were to be executed so that all of the QSPI flash were deleted? In such a situation (the code is no longer there) is it possible to brick the board by loading code that does something very wrong or can the boot loader chip always recover, irrespective of whether the small recovery code is present or not?
Thanks
Regards
Mark
I understand that by holding the button down on the Teensy 4 for 15s will cause the reference program stored at the end of the QSPI flash to be loaded so that a "known-good" program runs.
I see that the code is located at 0x601ff000 and occupies the last 4k of space but is it protected in any way? What happens if a mass erase were to be executed so that all of the QSPI flash were deleted? In such a situation (the code is no longer there) is it possible to brick the board by loading code that does something very wrong or can the boot loader chip always recover, irrespective of whether the small recovery code is present or not?
Thanks
Regards
Mark