¶ preface
ROCKCHIP series chips provide customers with a standard I2C bus to facilitate customers to control and access different external devices. I2C total
The line controller passes information between devices connected to the interrupt via the serial data (SDA) line and the serial clock (SCL) line. Each device
Have a unique address identification (whether it is a microcontroller - MCU, LCD driver, memory or keyboard interface) and it can
Acts as a transmitter or receiver (depending on device functionality).
Rockchip I2C controller supports the following features:
- Compatible with I2C and SMBus interfaces
- Only supports I2C wake-up in master mode
-Software clock frequency supports up to 400kbps, and some chips can reach 1000kbps - Supports 7-bit and 10-bit addressing modes
- Interrupt or poll up to 32 bytes of data transfer at a time
¶ i2c pin
Hot Wheels Technology has developed a rk3588s motherboard youyeetoo R1, which provides 40pin expansion pins, including 3-way i2c pins. The pin distribution is shown in the figure below:
¶ shell command call
If you want to use shell commands in the Android system, you need to enter the Android command line window through ADB. For tutorials on using ADB, please refer to the adb debugging chapter. After opening the Android system command line through adb.
- Enter the Android system command line
adb root
adb shell