STM32H523RCT6 READ OUT PROTECTION LEVEL1

[DeepakKumar]

Hi ST Team,

                   Currently i am using STM32H523RCT6 mcu for one of my project. 
In this i want to set the read out protection of level 1. 

Currently i am using below sequence to set the read out protection of level 1 protection..

    // Unlock the flash option bytes

    HAL_FLASH_Unlock();

    // Set the read out protection level to Level 1

    // RDP Level 1 is indicated by the value 0x01

    uint32_t option_bytes = 0x01; // RDP Level 1

    HAL_FLASH_OB_Unlock();

    // Program the option byte

    HAL_FLASHEx_OBProgram(&option_bytes);

    // Start the option byte change

    //HAL_FLASH_OB_Launch();

    // Lock the option bytes

    HAL_FLASH_OB_Lock();

    // Lock the flash memory

    HAL_FLASH_Lock();

HAL_FLASH_OB_Launch();

but this is not working.....

So can you please send me a sample code or routine to set the read out protection of level 1.

Thanks with Regards,

DEEPAK

[Imen.D]

Hello @DeepakKumar ,

There is a "Product State" feature available on STM32H5 which functions similar to the readout protection (RDP) feature.

Please refer to these articles :

• How to enable RDP-like product state flash protect... - STMicroelectronics Community
• Security:Product state for STM32H5 - stm32mcu

This workshop video presents the new mechanism of readout protection introduced in STM32H5: 

STM32H5 workshop - 08 Readout protection (intermediate)