STM32F103ZET6, write protection

frantzw · ‎2014-12-15

Posted on December 15, 2014 at 13:50

Gentlem,

my question:

The STMFlashDemonstrator 2.7.0 after loading a program in to the STM32F103ZET6, while verifying,

brings the error:

''...The page may be write protected. Please disable the write protection...''.

It's not possible because I have checked (with Rowley debugger) the OptionBytes WRP, they are all 0xFF. And the RDP is 0xA5.

And the Rowley debugger loads the program at the mentioned page whitout error.

How can it be, do you have an idea ?

Tesla DeLorean · ‎2014-12-15

Posted on December 15, 2014 at 20:45

A communication problem? A low quality USB-to-Serial dongle, perhaps using one of Prolific's current or older broken drivers?

The boot loader is pretty fragile once it's auto-bauded the connection, and they aren't many avenues to retry things.

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frantzw · ‎2014-12-16

Posted on December 16, 2014 at 12:59

It's curios the verifying error appears not for all STM32F103ZET6.

Thanks for your reply Clive!

I will try your suggestions.

frantzw · ‎2014-12-18

Posted on December 18, 2014 at 12:43

I tried other STM32F103ZET6 too and also with another USB cable to the dongle.

The verifying error doesn't appears with STMFlashloader 2.5.0 for all

STM32F103ZET6. But therefor with STMFlashloader 2.7.0. Yes it's funny, anyway.

Thanks for your reply!