Hi Sergey,
Both CMP and WPS bits got set in the status register. The chip was successfully flashed after both bits were cleared.
I'm curious: Please tell, how you clear these CMP and WPS bits? What command do you run to do this?
чт, 25 нояб. 2021 г. в 23:44, Сергей Янович sergei.ianovich@yandex.ru:
On Thu, 2021-11-25 at 17:02 +0300, Сергей Янович wrote:
On Wed, 2021-11-24 at 13:17 +0300, Mike Banon wrote:
P.S. I hope that your 1.8V chip wasn't partially damaged by a temporary usage of 3.3V on it
It is possible, but seems unlikely. The chip correctly responds to flasrom probing queries. I suspect I activated a write protection of some kind. /WP is high at 1.81V now. So I am investigation software WP in the chip now.
SOLVED. For reference.
I guessed correctly. Both CMP and WPS bits got set in the status register. The chip was successfully flashed after both bits were cleared. I used a small C program for reading and writing. The program was made along examples in [1].
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