My development environment：system : jetpack 6.0 Blockquote wake_up_interruptible(&chan->start_wait); /* Read SOF from capture descriptor */ ts = ns_to_timespec64((s64)descr->status.sof_timestamp); trace_tegra_channel_capture_frame(“sof”, &ts); vb->vb2_buf.timestamp = descr->status.sof_timest…

hello MushroomHunter, TSC timestamp is a counter, the period is 32 ns (due to 31.25MHz). you may multiply by 32 to convert TSC to nanoseconds. RCE timestamp is calculated from TSC to obtain the SOF/EOF timestamps. let’s following up Topic 313528 for your further request.

hello MushroomHunter, please refer to developer guide, it’s Argus::Ext::ISensorTimestampTsc::getSensorSofTimestampTsc to return the VI HW (SOF) timestamp based on TSC. you may see-also Argus::ICaptureMetadata::getSensorTimestamp of the timestamp for the sensor. for comparison, please try adding…

hi JerryChang Our current camera is a yuv image,Can we use this method?I have tried this method before, but it always fails. I don’t know if there is any other configuration required? There is another question, if this method is used, is the camera timestamp the conversion of tsc and rce timestamp…

[image] MushroomHunter: Our current camera is a yuv image,Can we use this method?I have tried this method before, but it always fails. I don’t know if there is any other configuration required? @JerryChang [image] The image data we currently output is in YUV format and has not passed throu…

hello MushroomHunter, [image] MushroomHunter: Our current camera is a yuv image,Can we use this method? unfortunately not, Argus sample application works with bayer sensors only.

hello MushroomHunter, you may refer to below to obtain sof_timestamp from VI driver, please also note that, TSC is 31.25MHz ~= 32 ns, this sof_timestamp is timestamp processed by RCE. for instance, diff --git a/drivers/media/platform/tegra/camera/vi/vi5_fops.c @@ -582,6 +582,8 @@ static void vi…

What is the relationship between RCE timestamp and TSC timestamp?

Robotics & Edge Computing Jetson Systems Jetson AGX Orin

MushroomHunter November 20, 2024, 5:06am 9

My expectation is to put the camera and the system in the same time domain. And the results of my current test are that the timestamp of RCE is much faster than the system timestamp.
You can refer to my postRCE timestamp vs system UTC timestamp

getSensorTimestamp, getSensorTimestampTsc and v4l2 timestamp

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What is the relationship between RCE timestamp and TSC timestamp?

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