STM32G0B0KET6 - Writing Flash Memory Problem (Pages 382 & 383)

[erkanc]

Hi everyone.

I caught a problem on STM32G0B0KET6. I want to write a data to main flash memory. But I detected that I can not  write any data page 382 and page 383. I only can not write to this pages. There are no problem for other pages. 

For this pages, I always took error(warning) of FLASH->SR : CFGBSY after when I write first word that is 32 bits.

I spent to find for two day for this problem. If I did not test other pages, I would have lost time more. I used HAL library for this process. 

Do you have any information about this problem?

Note: I write as Type of DoubleWord.

Thank you.

Best regards,

https://www.st.com/resource/en/reference_manual/rm0454-stm32g0x0-advanced-armbased-32bit-mcus-stmicroelectronics.pdf 

Page number for following SS: 55

[Sarra.S]

Hello @erkanc, 

Please check if the write protection error flag (WRPERR) of the FLASH_SR register is set. 

Read 3.5.2 FLASH write protection (WRP) section in RM 

[erkanc]

I already tested it. If I write any data to page 382 and page 383, CFGBSY bit is stucted as set. But there is no problem for other pages.

[Sarra.S]

Hello again @erkanc, 

Could share with us the sequence to write double word in these 2 pages