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→Source code cross compilation
[[CS-MIPI-X for Raspberry Pi#Video Control Toolkits Manual|CS Series Video Control Toolkits Manual]]
[[CS-MIPI-X for Raspberry Pi#Video Control Toolkits Manual|CS Series Video Control Toolkits Manual]]
=== Notes for CM4 ===
Cm4 supports the use of two cameras at the same time. Following above steps will only be able to use CAM1. To use two cameras, follow the following steps:
==== Upgrade dt-blob.bin ====
<code>wget <nowiki>https://www.raspberrypi.org/documentation/hardware/computemodule/dt-blob-dualcam.bin</nowiki></code>
<code>sudo cp dt-blob-dualcam.bin /boot/dt-blob.bin</code>
==== Upgrade dual camera version dtbo file ====
Use csimx307,5.10.17-v7l+ kernel as an example：
<code>sudo cp raspberrypi_v4l2/release/driver_bin/5.10.17-v7l+/csimx307-dual-cm4.dtbo /boot/overlays/csimx307.dtbo</code>
<code>sudo reboot</code>
==== Device node description ====
The CM4 module uses two I2C channels to communicate with the two cameras respectively.
{| class="wikitable"
! description
!i2c bus num
!video node
|-
|CAM0
|0
|video0
|-
|CAM1
|10
|video2
|}
Note: If there is only one camera, video node is always video0.
==== Gstreamer usage Demo ====
<code>export DISPLAY=:0</code>
*CAM0 preview(VEYE-MIPI-327,CS-MIPI-IMX307 @1080p mode)
<code>gst-launch-1.0 v4l2src device=/dev/video0 ! "video/x-raw,format=(string)UYVY, width=(int)1920, height=(int)1080,framerate=(fraction)30/1" ! videoconvert ! fpsdisplaysink videosink=autovideosink sync=false text-overlay=false -v</code>
*CAM1 preview(VEYE-MIPI-327,CS-MIPI-IMX307 @1080p mode)
<code>gst-launch-1.0 v4l2src device=/dev/video2 ! "video/x-raw,format=(string)UYVY, width=(int)1920, height=(int)1080,framerate=(fraction)30/1" ! videoconvert ! fpsdisplaysink videosink=autovideosink sync=false text-overlay=false -v</code>
=== Source code cross compilation ===
=== Source code cross compilation ===
The main resources in this section are the [https://www.raspberrypi.org/documentation/linux/kernel/building.md official piOS building method]. We use the method of cross-compilation, and the 5.4.72 version of 32bitOS is taken as an example.
The main resources in this section are the [https://www.raspberrypi.org/documentation/linux/kernel/building.md official piOS building method]. We use the method of cross-compilation, and the 5.4.72 version of 32bitOS is taken as an example.