The device is protected
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‎2019-11-14 3:23 AM
My MCU is loaded with the test program at the supplier. But when I loaded the actual program, it did not allow me to erase or read the chip, and the device was protected.
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‎2019-11-14 3:35 AM
There seems to be some option bytes programmed to protect the example code. Probably it's RDP == 0xBB. Setting it to 0xAA will allow you to flash your code, but the original demo will be erased forever
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‎2019-11-14 3:58 AM
I did that and still couldn't.
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‎2019-11-14 4:31 AM
Very little detail of board or connectivity.
Could be a connection issue.
Please try using the ST-LINK Utilities or STM32 Cube Programmer applications.
Describe the board.
Had success with this previously, or new board/design?
Does mass erase clear the RDP state?​
Up vote any posts that you find helpful, it shows what's working..
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‎2019-11-14 4:37 AM
I got it to thank you.
