Ethernet Speed and Autonegation

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Super User

Enable auto-negotiation on the STM32 and set your link to 10M on the computer. What happens? Does the STM32 correctly negotiate to 10M speed?

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Associate III

@TDK If the enable auto-negation and speed 10M for STM32. It works. But If I change to disable auto negation, just working 100M

Principal III

You see what doesn't work. Debug it! Check the PHY extended status register address and speed/duplex bit definitions.

But all that ST's bloatware is broken anyway...

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