You're on the right pin. What are you using as ground? The other pin in the USB_OTG pair works.
You should have the ethernet plugged into a switch: the hardware timestamping functionality doesn't work without a carrier.
It's a very short pulse, and on my cheapo oscilloscope (FNIRSI 1013D) I had to do quite a lot of fiddling around to get it to show up: T to 1uS/div and trigger mode of single.
You should have the ethernet plugged into a switch: the hardware timestamping functionality doesn't work without a carrier.
It's a very short pulse, and on my cheapo oscilloscope (FNIRSI 1013D) I had to do quite a lot of fiddling around to get it to show up: T to 1uS/div and trigger mode of single.
Statistics: Posted by jjsea — Wed Dec 25, 2024 1:05 am