How to wire stm32c031f6 OTP

RJ3 · ‎2024-04-21

HI:

I want to write the board SN, REV, TIME to STM32C031F6 OTP area 0x1FFF7000~0x1FFF705F, which is almost 96bytes to write, from the stm32cubeprogrammer manual -W64 command can to write, but is needs to be repeated 6 times, right?

Also from the manual there have write file for the OTP command "fwrite", how do i understand parameter "word" , can you tell me what command to use?

"STM32_Programmer_CLI.exe --connect port=usb1 -otp fwrite example.bin word=??"

example data:

47333934302D36313833304130314653323331353030303100FF71D2FFFFFFFF
66138B6F00FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF3106FFFFFFFF
41303100FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD115FFFFFFFF

Can you tell me how it would be easier to write these data? thanks!

Tesla DeLorean · ‎2024-04-21

You could have a function or mode in your own software that writes the OTP settings you provide. You could presumably test if the are as expected or not.

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Aziz BRIGUI · ‎2024-05-20

Hello @RJ3

Sorry for the late reply,

The "-otp" CLI is specific to the STM32MP series. For writing to OTP memory using CubeProgrammer on an STM32C031, you can simply use the following CLI:

>STM32_Programmer_CLI -c port=usb1 -d OTP_Data.bin 0x1FFF7000

Aziz

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