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Write OTP on JN5168 for Code Protection (CPR)

Question asked by mohammeds on May 30, 2017
Latest reply on Jun 19, 2017 by Mario Ignacio Castaneda Lopez

Hello,

i implemented a custom flash programmer based on the JN-AN-1003_v1.13 documentation using the message types described at page23. Communicating (read and write) with the Bootloader is working fine. However the JN5168  has a one time programmable memory that i'd like to write (described at page 11) where for example you could save a custom mac address, custom user settings or activate code protection (cpr).

Whatever address (0x01001510 for Customer Settings) i try to write with message type for flash program(0x09) makes the jennic respond with an "unknown error message": 0x03 0x0a 0xfe 0x07

 

is there some kind of documentation on how to write the otp? are there some other kind of messagetypes needed?

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