I've set up my RPi to act as a PTP GMC. My other device (non-RPi) is receiving the Sync Message, Follow-Up message, and is sending a Delay_Req message (all verified via wireshark). However, I'm not seeing any Delay_Resp from the RPi in wireshark.
I've tried the following things:
1) Ensure SourcePortID is different between two devices
2) Ensure two-step flag is set on both devices
3) Ensure the Delay_Req message is being sent to the PTP event port 319
4) Tried various combinations of using the RPi's mac/ip as destination values vs broadcast mac/ip
5) Ensure unicast flag is not set
6) Ensure sequence number is incrementing
7) Looked in ptp4l.conf for an obvious flag...
Any hints on what I should look at? Probably something obvious that I'm missing
I've tried the following things:
1) Ensure SourcePortID is different between two devices
2) Ensure two-step flag is set on both devices
3) Ensure the Delay_Req message is being sent to the PTP event port 319
4) Tried various combinations of using the RPi's mac/ip as destination values vs broadcast mac/ip
5) Ensure unicast flag is not set
6) Ensure sequence number is incrementing
7) Looked in ptp4l.conf for an obvious flag...
Any hints on what I should look at? Probably something obvious that I'm missing
Statistics: Posted by rdb9878 — Thu Feb 27, 2025 10:10 pm — Replies 0 — Views 3