Module otp

Interface to the RP2350’s One Time Programmable Memory

Enums

• Error
  The ways in which we can fail to access OTP

Constants

• NUM_PAGES
  How many pages in OTP (post error-correction)
• NUM_ROWS
  How many rows in OTP (post error-correction)
• NUM_ROWS_PER_PAGE
  How many rows in one page in OTP (post error-correction)
• OTP_DATA_BASE
  OTP read address, using automatic Error Correction.
• OTP_DATA_RAW_BASE
  OTP read address, without using any automatic Error Correction.
• RAW_WRITE_BIT_MASK
  24bit mask for raw writes

Functions

• get_chipid
  Get the random 64bit chipid from rows 0x0-0x3.
• get_private_random_number
  Get the 128bit private random number from rows 0x4-0xb.
• read_ecc_word
  Read one ECC protected word from the OTP
• read_raw_word
  Read one raw word from the OTP
• write_ecc_word
  Write one raw word to the OTP with ECC
• write_raw_word
  Write one raw word to the OTP