I2C Test - Orange Pi Zero2 User Manual

bits per word: 8
max speed: 500000 Hz (500 KHz)
TX | FF FF FF FF FF FF
FF FF FF FF FF FF F0 0D | ......@....▒..................▒.
RX | FF FF FF FF FF FF
FF FF FF FF FF FF F0 0D | ......@....▒..................▒.

3.23.5. I2C test

1) According to the schematic diagram of 26pins, the i2c available for Orange Pi Zero
2 is i2c3
2) After starting the linux OS, first confirm that there is an i2c3 device node under
/dev
root@orangepi:~# ls /dev/i2c-*
/dev/i2c-3 /dev/i2c-5
3) Then start to test i2c, first install i2c-tools
root@orangepi:~# apt update
root@orangepi:~# apt install i2c-tools
4) Then connect an i2c device to the i2c3 pin of the 26pins connector
Sda Pin
Sck Pin
vcc Pin
gnd Pin
5) Then use the i2cdetect -y 3 commands if the address of the connected i2c device
can be detected, it means that i2c can be used normally
40 00 00 00 00 95
FF FF FF FF FF FF FF FF FF FF FF FF
40 00 00 00 00 95
FF FF FF FF FF FF FF FF FF FF FF FF
i2c3
Corresponding to pin 3
Corresponding to pin 5
Corresponding to pin 1
Corresponding to pin 6
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