STM32 MCUs Security

Can't reset RDP from level 1 to level 0; Nucleo L476RG

Hi,I was testing with the Nucleo STM32L476RG board, BSP example project FLASH_DualBoot.I made small changes in the example code (LED blink stuff) and programmed bank 1 and 2 several times. I also manually checked/toggled the option bytes BFB2 bit a f...

If I program the ST32F072 part with Level 2 security can I erase the part and reprogram? I understand the Level security remains at Level 2. I am using a Cyclone Universal programmer.

How can i disable WRP with RDP is active? STM32F103RGT6

I am use this code for write page with disabling WRP:FLASH_Unlock(); if( FLASH->WRPR != 0xFFFFFFFF ) //WRP is active for any pages { FLASH_EraseOptionBytes(); NVIC_SystemReset(); //according to the manual } if( FLASH_ErasePage( address ) != FLAS...

STM32f42xx CRC stop/resume

HelloSince the STM32f42xx series has no intial value for the CRC I'm wondering if there is a way to stop a crc calculation (store the DR value) and resume it by writing the DR register with the stored value and some calculation??Something like this:c...

This question about SBSFU software package from ST official website,and I download the SBSFU package to my stm32f413,I find the JTAG HW interface is forbidden ,how can i do to download other programmer?

Factory bootloader CRC command?

I noticed that in STM32FLASH programming utility, there is support for a CRC bootloader command. From what I can tell in the source code and commit history, this command is 0xA1 and was introduced around June of 2014. But from the ST documentation, ...

Is there any way to implement BigNumbers on a STM32F4?

I need to implement some BigNumber math on an STM32F4 (bn.h, conv.h, modular.h). I would like to use functions such as W8_to_Big(), StAllocBig(), and InitBig(). Unfortunately I cannot find any information on how to use these functions. Are there any ...