View source for Sony IMX397 Linux driver for Jetson

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|title=Sony IMX397 Linux Driver for NVIDIA Jetson
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|description={{{description|Learn more about the Sony IMX397 Linux driver for Jetson which is capable of handling video data up to 480P at 200fps!.}}}
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 Refer to the [[RidgeRun_Linux_Camera_Drivers/Available_Camera_Drivers/List_of_Tested_Camera_Sensors|RidgeRun Linux Camera Drivers]] to meet all the list of Drivers available.
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== Sony IMX397 Sensor features == 
Reference: [https://www.framos.com/en/imx397cln-c-21059 Sony IMX397 sensor]

The Sony IMX397 is a Small, Low Power Global Shutter CMOS Imager for High-speed Monitoring and Sensing in Embedded Industrial Applications.

* Tested resolutions are 640x480 at 200fps. The tested format is GREY.

* The IMX397 driver supports 1 lane configuration for the given resolution.

==Build kernel using Jetpack and imx397 driver==

=== Jetson Nano ===
==== Building kernel sources ====
Follow the instructions in [[NVIDIA_Jetson_Nano_-_Building_the_Kernel_from_Source | NVIDIA_Jetson_Nano - Building the Kernel from Source]] to build the kernel sources for the Jetson Nano.

==== Enable driver ====
Once you are following the guide there is a step '''make menuconfig''', which allows you to enable the imx397 driver as built-in. 

<syntaxhighlight lang=bash>
make ARCH=arm64 O=$KERNEL_OUT menuconfig
</syntaxhighlight>

Select the driver. The menu option is located:

<pre class="config">
-> Device Drivers
  -> Multimedia support (MEDIA_SUPPORT [=y])
    -> NVIDIA overlay Encoders, decoders, sensors, and other helper chips
       <*> IMX397 camera sensor support
</pre>

== Test your Kernel image using Jetpack root file system==

Check the kernel version. At this moment you can test the image created in order to see if the new kernel is working correctly. You have to see a new kernel version with the correct date of compilation:

===Jetson Nano===
<syntaxhighlight lang=bash>
uname -a 
Linux nvidia 4.9.140 #6 SMP PREEMPT Tue May 7 16:25:38 CST 2019 aarch64 aarch64 aarch64 GNU/Linux
</syntaxhighlight>

==== Nano EVM kit ====

You can see that the driver is probed, execute the line:  dmesg | grep "imx397"

Expected output:
<syntaxhighlight lang=bash>
nvidia@nvidia:~$ dmesg | grep "imx397"
[    1.667200] imx397 6-001a: Driver Version: 0.1.0
</syntaxhighlight>

video devices created:

<syntaxhighlight lang=bash>
ls /dev/video*
/dev/video0 
</syntaxhighlight>

==Examples==

===GStreamer Nano===
====480p@200fps====
<syntaxhighlight lang=bash>
gst-launch-1.0 v4l2src device=/dev/video0 num-buffers=5 ! "video/x-raw,width=640,height=480,framerate=(fraction)200/1,format=GRAY8" ! \
filesink location=test.raw
</syntaxhighlight>

<syntaxhighlight lang=bash>
gst-launch-1.0 v4l2src device=/dev/video0 ! "video/x-raw,width=640,height=480,framerate=(fraction)200/1,format=GRAY8" ! \
nvvidconv ! 'video/x-raw(memory:NVMM),format=I420,width=640,height=480' ! nvoverlaysink
</syntaxhighlight>

<syntaxhighlight lang=bash>
gst-launch-1.0 v4l2src device=/dev/video0 ! "video/x-raw,width=640,height=480,framerate=(fraction)200/1,format=GRAY8" ! \
nvvidconv ! omxh264enc ! mpegtsmux ! filesink location=test.ts
</syntaxhighlight>

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[[Category:Jetson]][[Category:Jetson V4L2 Drivers]][[Category:Sony]]