Difference between revisions of "I2c bus number and video node"
| Line 3: | Line 3: | ||
== I2c bus number on different boards == | == I2c bus number on different boards == | ||
| + | For camera modules with MIPI CSI-2 interface, the i2c bus is commonly provided as the communication channel for parameter configuration. Users use the i2c protocol to access the camera registers. A series of shell scripts are provided to facilitate this operation, such as [[VEYE-MIPI-290/327 i2c/|VEYE-MIPI-X I2C.sh]],[[CS-MIPI-X i2c|CS-MIPI-X I2C.sh]],[[5m mipi i2c user guide|VEYE-MIPI-IMX335 i2c script]]. | ||
| + | Generally, there is a matching i2c bus for each MIPI CSI-2 interface on each motherboard. For all our scripts, we can use the <code>-b [bus numer]</code> option to indicate which i2c bus is targeted for this operation. Below, we have summarized the i2c bus serial numbers for commonly used motherboards. | ||
| + | |||
| + | ===Raspberry pi=== | ||
| + | For a Raspberry Pi with only one mipi csi-2 interface, the i2c bus is 10. If your piOS is very old, then maybe it is 0. | ||
| + | |||
| + | Special, for the Computer module series. Make the following description. | ||
| + | ====CM3==== | ||
| + | CM3 use I2C-1 to control 2 cameras，It is time-sharing multiplexing. | ||
| + | |||
| + | <code>./camera_i2c_config [cameranum]</code> | ||
| + | {| class="wikitable" | ||
| + | !cameranum | ||
| + | !description | ||
| + | |- | ||
| + | |0 | ||
| + | |CAM0 | ||
| + | |- | ||
| + | |1 | ||
| + | |CAM1 | ||
| + | |} | ||
| + | ====CM4==== | ||
| + | The CM4 module uses two I2C to communicate with two cameras respectively. | ||
| + | |||
| + | <code>./camera_i2c_config</code> | ||
| + | {| class="wikitable" | ||
| + | !i2c bus num | ||
| + | !description | ||
| + | |- | ||
| + | |0 | ||
| + | |CAM0 | ||
| + | |- | ||
| + | |10 | ||
| + | |CAM1 | ||
| + | |} | ||
== Description of video nodes == | == Description of video nodes == | ||
Revision as of 11:37, 27 February 2022
1 I2c bus number on different boards
For camera modules with MIPI CSI-2 interface, the i2c bus is commonly provided as the communication channel for parameter configuration. Users use the i2c protocol to access the camera registers. A series of shell scripts are provided to facilitate this operation, such as VEYE-MIPI-X I2C.sh,CS-MIPI-X I2C.sh,VEYE-MIPI-IMX335 i2c script.
Generally, there is a matching i2c bus for each MIPI CSI-2 interface on each motherboard. For all our scripts, we can use the -b [bus numer] option to indicate which i2c bus is targeted for this operation. Below, we have summarized the i2c bus serial numbers for commonly used motherboards.
1.1 Raspberry pi
For a Raspberry Pi with only one mipi csi-2 interface, the i2c bus is 10. If your piOS is very old, then maybe it is 0.
Special, for the Computer module series. Make the following description.
1.1.1 CM3
CM3 use I2C-1 to control 2 cameras，It is time-sharing multiplexing.
./camera_i2c_config [cameranum]
| cameranum | description |
|---|---|
| 0 | CAM0 |
| 1 | CAM1 |
1.1.2 CM4
The CM4 module uses two I2C to communicate with two cameras respectively.
./camera_i2c_config
| i2c bus num | description |
|---|---|
| 0 | CAM0 |
| 10 | CAM1 |