Recovering a bricked Wiznet W7500 using the bootloader

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Project description

Recovering a bricked Wiznet W7500 using the bootloader Dec 20, 2023 Categories: Misc I "bricked" a Wiznet W7500 MCU during development. After flashing yet another build of the firmware the J-Link disconnected suddenly and I was not able to connect to the chip again (even under reset). What's funny is that the LEDs blinked as usual and I was able to ping my application so the chip was far from being dead. I quickly found the suspected piece of code: pin muxing. When changing PORTA muxing options I must have un-muxed the SWD pins. 🙁 I did not want to throw away or have to resolder the…

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