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Lzhao
Associate II
since ‎2019-09-18
‎2023-06-14

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How to erase and modify option bytes bytes in STM32WB55CGU6?

2019-09-25
​FLASH_CR:

The Flash of STM32WB55CGU6 Chip Can't Read and Write Normally，A sector is protected by CPU2. CPU1 can not access this area normally. How to switch to CPU2 to read and write this area through DWG or other methods?

2019-09-19
FLASH address: 0x0800 0000~0x080F 5FFF, CPU1 (cortex-M4) can read and write to its normal access, address 0x080F 6000~0x080F FFFF is protected by CPU2 （cortex-M0）and read and write.

For flash memory which only burns STM32WB55CGU6 series chips, one sector is locked and cannot be read or written. According to the chip manuals, there are errors in mass erase and programming. How to solve it?

2019-09-18
The STM32WB55xx devices embed an Arm ®(a) CPU1 Cortex ® -M4 core.I use this chip manual.I operate strictly according to the chip manual, but all of them have errors in reading, writing and erasing a sector.the flash meomory address range:​0x0800 000-...
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