Programming a Data in to Flash memory STM32G series

[Karthik Kumar]

Hello Every one I am using NUCLEO-G0B1RE board when trying to store the data in to flash memory address its not updating after erasing but individually if I try only erase or only write data in to flash memory it is working

please suggest me below is my code

at run time i would like to erase and update the data suggest me if went wrong in the code

uint32_t BaseAddr = 0x08041000; //global variable.

uint64_t FlashData = 0xee;////global variable.

inside main function

HAL_FLASH_Unlock();

FLASH_PageErase(2,258);

HAL_FLASH_Lock();

HAL_Delay(100);

HAL_FLASH_Unlock();

HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, BaseAddr, FlashData);

HAL_FLASH_Lock();

[Sarra.S]

Hello @Karthik Kumar​,

So based on your code, you're trying to erase a page from flash memory and then write data to a specific address in the same page..

you are writing a double word, so your base address (0x08041000) have to be aligned with 8 bytes

The problem is either in the erase or the write operation!

So, verify the erase is successfully done before writing, using HAL_FLASH_GetFlagStatus() function.

for example to wait for the erase operation is complete before HAL_FLASH_Lock();

Verify the write operation by reading back from the address you wrote to, and compare it to the data you wrote.

Hope that helps!

[Karthik Kumar]

Hello @Sarra.S​ Thank youfor your Response, I got the issue after adding this HAL_FLASH_GetFlagStatus() function.

Please guide me I have shared screen shot below.

[poojith7]

bro i am facing the same issue i am not even getting data if do them induadually also

[poojith7]

@Karthik Kumar