Is it possible to change RDP level 2 back to level 1 or level 0?
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‎2021-10-12 6:50 PM
Hi,All.
​First of all, LET me tell you the background of the problem.
- I use STM32G0 series MCU.
- The SWD port will be hardware connected to one of my wireless communication modules for OTA upgrade function. Then I tried to use the read protection function at the same time, but I found that when the RDP level changed (from level 0 to Level 1), the RDP could only take effect after the power reset. I have checked the document of RM0454 and mentioned that when SWD port is connected, it is necessary to replace system reset by power-on reset.
Here comes the question:
1.Is there any way to write RDP level 1 without power reset operation? (SWD interface always hardware connected but no sigal communitication)
2.Is it possible to restore it to level 0 or level 1 after RDP have been set to level 2?
Regards!
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RDP
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STM32G0 Series
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‎2021-10-12 7:15 PM
NoNot sure, an OB launch doesn't set it correctly?- No (barring exotic solutions).
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‎2021-10-12 8:05 PM
1.I tried calling OB_LAUCH after changing the RDP level in the program. But it didn't work. I still need to power on reset.
