[feature] Support for STM32F4 option bytes #1062
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@timothytylee how view from the already written code, the STM32_XX_OPTION_BYTES_BASE constants use the physical address of option bytes. For STM32F4 it is 0x1FFFC000 (dm00031020, p. 88) |
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Yet in section 3.7.2 (pg92), it says to use FLASH_OPTCR register to program the user option bytes. I have checked that the RDP feature does indeed come into effect after changing the FLASH_OPTCR. The values read back from 0x1fffc000 appear to be some random bytes. |
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@timothytylee You're right |
Nightwalker-87
approved these changes
Nov 6, 2020
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@timothytylee Does this close any open issues? |
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@Nightwalker-87 this is a new feature. I do not think there are issues related to it. |
Nightwalker-87
changed the title
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Allow the option bytes to be read/written to STM32F4. Tested on a STM32F405.