We have two devices with NX. Each NX device controls its own camera via GPIO.
We would like to synchronize NX devices via PTP. After synchronization, we would like each NX device to send a pulse per second to its own camera.
Currently, we could synchronize two NX devices via PTP. Both system clocks are synced.
But we are trying to find a way to send a pulse per second to the camera via GPIO.
We tried a user-space program that will toggle a GPIO every second, but we see the pulses drift between two NX devices.
We also tried the sample kernel module, and we also see drift.
Jetson TX2 + PTP capture synchronization - Jetson & Embedded Systems / Jetson TX2 - NVIDIA Developer Forums
Is there any way to send these pulses so that is not dependent on software.(ie) similar to a hardware PPS pin ? Basically we would like to send a pulse per second very accurately to our cameras.