SENSING GMSL2 Cameras

Preview

We provide different GMSL2 cameras that cover various resolution, transfer speed and etc. These cameras can be used for applications on many fields. For examples:

• Automotive
• ADAS + Viewing Fusion
• High Dynamic Range Imaging
• Autonomous Driving
• Robotics

Check the below specifications for more detail.

Specifications

SG3S-ISX031C-GMSL2-H (6G bps)

SG3S-ISX031C-GMSL2-F (3G bps)

SG8S-AR0820C-5300-G2A-H (6G bps)

SG2-IMX390C-5200-G2A-H (6G bps)

SG2-AR0233C-5200-G2A-H (6G bps)

The camera is equipped with SONY CMOS image sensor ISX031 and Maxim GMSL2 serializer MAX96717F. It has an automotive-grade sensor with a well-tuned Image Signal Processor (ISP) that produces exceptional image quality, which comes with an IP67-rated enclosure – is supplied with an AA lens that is focused and glued in our factory.

Name	Parameter
Sensor	SONY 2.95MP ISX031 RGGB
ISP	Built-in
Image Size	1/2.42 inch CMOS
Output Pixels	1920 H * 1536 V
Pixel Size	3.0 um * 3.0 um
Frame Rate	1920 * 1536 @ 30fps
HDR Support	Yes
LFM	Yes
Output data	YUV422@8bit
Serializer	MAXIM MAX9295A
Camera Interface	GMSL2
Power Supply	9~16V POC
Current	<200mA@12VDC
Connector	Amphenol Fakra (Z Code)
Operating temp. range	-40 ~ 85℃
Dimensions	W:25mm, L:25mm, H:18.6mm
Weight	<50g

Hardware Settings

Category	spec	Parameter
Serializer	Model	MAX9295A
	I2C Address	0x80 (8 bit address)
	Rate	GMSL2 (6G bps)
ISP	Model	ISX031
	I2C Address	0x34 (8 bit address)
	Frame Sync	Controlled by MAX9295A MFP7
	Reset	Controlled by MAX9295A MFP0

Getting Started

We'll use reComputer Robotics J4012 for demonstration, what you might need

• SENSING GMSL2 camera
• A Mini-Fakra cable
• reComputer Robotics GMSL2 extension board

Setting up the Device

Connect the Mini Fakra cable with camera, there were 4 channels on reComputer Robotics J30/J40, we used the SG3S-ISX031C-GMSL2-F camera and it's connected to the '1' channel (silk screen letter 'B').

Preview

Before you begin, let's get familiar with the 4 channels since we'll use it during our configurations later.

Preview

These 4 channels are labelled as 'A', 'B', 'C' and 'D' on device, we recommend our customer to connect the camera with given alphabet order, in which case your video devices will be mapped as '/dev/video0', '/dev/video1', '/dev/video2', '/dev/video3' on your Jetson Linux correspondingly.

But if you have only one camera connected, only 'video0' will be displayed.

Next, we are going to configure the device tree overlay with Jetson IO to enable our device (you won't see video nodes under '/dev' folder until you configure it and reboot).

Configure Jetson IO

Launch JetsonIO with

sudo /opt/nvidia/jetson-io/jetson-io.py

Follow the configurations below step by step

1

Configure Jetson 24pin CSI Connector

2

Configure for compatible hardware

3

Select the Overlay

4

Save pin changes

5

Save and reboot to reconfigure pins

6

Press any key to reboot

Preview

note

During the above step, if you are using the 6Gbps camera, select 'Seeed GMSL 1X4 6G' overlay in step 3. The 6Gbps cameras are:

• SG3S-ISX031C-GMSL2-H
• SG8S-AR0820C-5300-G2A-H
• SG2-IMX390C-5200-G2A-H
• SG2-AR0233C-5200-G2A-H

Configure Video Information

In case you haven't install the v4l-utils

sudo apt-get update 
sudo apt-get install v4l-utils -y

• Frame Synchronization

v4l2-ctl -d /dev/video0 --set-ctrl=trig_mode=1

note

You can toggle 'trig_mode=0' to disable frame synchronization. Or use 'trig_mode=1' to enable frame synchronization when you have multiple cameras connected.

• Video Format

v4l2-ctl -V --set-fmt-video=width=1920,height=1536 -c sensor_mode=0  -d /dev/video0

note

Depend on which camera you are using, there might be different 'sensor_mode' as pre-defined here, mainly:

Sensor Mode	Frame Type
0	YUYV8_1X16/1920x1536
1	YUYV8_1X16/1920x1080
2	YUYV8_1X16/3840x2160

Preview

Gst Launch

Launch the viewer with gst-launch-1.0

gst-launch-1.0 v4l2src device=/dev/video0 ! \
    video/x-raw,format=YUY2,width=1920,height=1080,framerate=30/1 ! \
    videoconvert ! videoscale ! xvimagesink

Preview

Additional Resources

Datasheet

• SG3S-ISX031C-GMSL2-F
• SG3S-ISX031C-GMSL2-H
• SG8S-AR0820C-5300-G2A-H
• SG2-AR0233C-5200-G2A-H
• SG2-IMX390C-5200-G2A-H

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