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Thomas Roell
Associate III
since ‎2018-07-20
‎2024-03-21

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STM32 PKA RSA Montgomery Parameter

2024-03-08
The PKA peripheral can precompte the montgomery parameter, which is documented as "R2 mod n". If I compute this offline with R being the normal (2 ^ b) [b the numbers of bits in the modulus n], I am getting a different result than what PKA computes. ...

USB / UART bootloader special / extended special commands

2023-11-20
Ok, 2 part question. The UART bootloader defined the "special" and "extended special" commands. Those are nicely integrated into OpenBL. So if I wanted to write my own custom "OpCode", what range would I use ? Looks like some are used for STM32WB (FU...

STM32WB, PA2/PC13 ERRATA clarification needed.

2021-02-23
The ERRATA says essentially that port activity on PA2/PC13 will disturb LSE (WCLSP100)Does that mean that I can use PA2 still as LSCO ?Does that also mean that I still can use PC13 as RTC_TS / RTC_TAMP, or as WKUP2 ?Which ones will be a problem, or i...

STM32L0 and SWD access (trying to implement secure boot)

2018-04-24
Posted on April 24, 2018 at 13:45Ok, this is half way simple but I have not found any good answer yet.I have some data in EEPROM that needs to be shielded from SWD accesses (and some later on at runtime in SRAM). Direct SWD reads can be to EEPROM ca...

STM32L072 vs STM32L082 detection

2017-12-13
Posted on December 13, 2017 at 22:11This one sounds simple. Essentially STM32L082 has a AES peripheral over STM32L072. I simply want to have a way to find out whether it's there or not.Now RCC->AHBENR does not help. I can set the corresponding bit ....
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