Note

This is the documentation for the latest development branch and may refer to features that are not available in released versions. If you are looking for the documentation for a specific release, use the drop-down menu on the left and select the desired version.

RTOS Sensor Support List

Supported Sensors

The current SDK includes built-in driver support for a variety of sensors:

Note: The support list is continuously updated with each SDK release.

• GC2093: 1920×1080@30, 1920×1080@60, 1280×960@90, 1280×720@90

• OV5647: 2592×1944@10, 1920×1080@30, 1280×960@45, 1280×720@60, 640×480@90

• SC132GS: 1080×1200@30, 640×480@30

• XS9950: 1280×720@30

• BF3238: 1920×1080@30, 1280×960@30

• IMX335: 1920×1080@30, 2592×1944@30

Sensor Usage Guide (RTOS)

How to enable a specific sensor driver in the kernel?

Although the SDK ships with driver code for many sensor models, only a small subset of commonly used models are enabled by default in the hardware configuration file — enabling all drivers would increase firmware size and degrade system performance. You can compile custom firmware to enable the sensors you need:

How to check which sensors are supported in the current firmware?

On an RTOS system, run the list_sensor command to see all cameras and modes supported by the current firmware:

Download the RTOS SDK

• RTOS SDK build guide: https://www.kendryte.com/k230_rtos/en/main/userguide/how_to_build.html

Navigate to MPP Configuration → Sensor Configuration

make menuconfig

Key options:

• Default SENSOR on CSI — default sensor CSI assignment

• Enable AutoFocus — enables auto-focus (requires camera support; currently only one LiChuang camera model supports AF)

• Enable CSIX — enables CSIX input, PowerDown GPIO, Reset GPIO, and I2C bus (i2c0–i2c4)

• Enable GC2093 / OV5647 / etc. — enables the corresponding sensor driver so it is scanned at boot and its MCLK is activated

How to Validate a Specific Sensor on the RTOS Application Layer

1. Confirm the sensor driver is enabled and rebuild + flash the SDK.

2. On the board, confirm the sensor and mode:

list_sensor

1. Choose a sample program related to camera capture (e.g. vicap / sensor):

./mpp/<your_sensor_sample>.elf

If the sample name in your image differs, use the find command output as the reference.

Reference (CanMV Python, for CanMV Firmware Only)

If you are using CanMV firmware (not RTOS-only), the following Python usage applies:

from media.sensor import *

sensor = Sensor(id=2, width=800, height=600, fps=30)

• id: the CSI number matching the physical MIPI CSI connection for your sensor

• width, height, fps: must match a resolution and frame rate listed in the table above

Reference Links

How to add a new sensor: ../advanced_development_guide/how_to_add_sensor.md

Camera calibration workflow: ../advanced_development_guide/how_to_calibrate_isp.md

CanMV Sensor API reference (CanMV firmware): https://www.kendryte.com/k230_canmv/en/main/api/