Lock bits in OTP are triple-redundant with a majority vote. They can’t be ECC-protected, because they may be mutated
bit-by-bit over multiple programming operations.
which makes sense.
But in the main.c code, ECC is used to lock the page 48, albeit 3 bytes are provided (which is clearly raw). If it is ECC, only 2 bytes should be provided.
From the datasheet:
which makes sense.
But in the
main.ccode, ECC is used to lock the page 48, albeit 3 bytes are provided (which is clearly raw). If it is ECC, only 2 bytes should be provided.https://github.com/raspberrypi/rp2350_hacking_challenge/blob/bb76472ff3e5d688452facc78e98de21bf1908d9/main.c#L35
If I understood correctly,
OTP_CMD_ECC_BITSshould not be used.