Precise Time Synchronization Between M4 and A7 Sensor Data

[MJo.3]

Hello,

I'm working on a project that requires precise time synchronization between two sensors.

sensor1 is from M4, which is encoder data of motor.

sensor2 is from A7, which is sensor connected to ethernet(UDP protocol)

For Sensor2, I've set up PTP (Precision Time Protocol), so I can accurately determine when the data is acquired based on the Linux timestamp. However, I'm facing challenges in determining the exact timestamp for the data acquired from Sensor1 on the M4.

Are there any recommended solutions or methodologies to achieve precise time synchronization for the M4 sensor data, especially in relation to Sensor2's timestamp(or A7's linux time)?

Thank you for your assistance!

[Olivier GALLIEN]

Hi @MJo.3 

Seems that this post may answer your question 

Solved: Shared/common time (domain) between A7 and M4 - STMicroelectronics Community

Hope it help 

Olivier