how to write data into stm32l5 flash memory

[sra]

uint64_t write = 0x1111111122222222;

HAL_FLASH_Unlock();

if(HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD,0x0807F000,write)==HAL_OK)

{

HAL_GPIO_WritePin(GPIOG,GPIO_PIN_12,GPIO_PIN_RESET);

}

 HAL_FLASH_Lock();

[Peter BENSCH · Accepted solution]

It is not entirely clear what exactly your question to answer is. In general, however, it can be said that a number of things must be taken into account when writing values to the Flash:

• in general, the maximum number of write cycles
• STM32L5 is based on Cortex-M33, which contains a safe TrustZone area, writing to Flash being part of this area must be allowed
• there are examples in the firmware repository of the STM32L5 in the folder Projects

Does it answer your question?

Regards

/Peter

[sra]

yes

[Peter BENSCH]

Great!

If the problem is resolved, please mark this thread as answered by selecting Select as best. This will help other users find that answer faster.

Regards

/Peter