I2C in the Orange Pi One

davin

Hello,

I am running a program that uses the wiringPi library on the Orange Pi One when I came across this error:

Unable to select I2C device: Device or resource busy

The device in question is the PCF8591 A/D Converter. When I ran the same program on the Raspberry Pi 3, it works perfectly fine. I am trying to make the program compatible with the Orange Pi One.

Is there a way to enable I2C on the Orange Pi One? Or is the wiringPi library completely incompatible with the Orange Pi One?

Thanks in advance.

nopnop2002

Check this

https://forum.armbian.com/index. ... 22-on-orange-pi-pc/

davin

Could you please explain these outputs?

pi@orange:~# i2cdetect -y 0
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- UU -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --                        

pi@orange:~# cat /proc/modules
mali_drm 2732 3 - Live 0x00000000
drm 178255 4 mali_drm, Live 0x00000000
mali 123208 0 - Live 0x00000000
ump 29379 3 mali, Live 0x00000000
bmp085 3487 0 - Live 0x00000000
pcf8591 3363 0 - Live 0x00000000
8189es 1076034 0 - Live 0x00000000

What does the line: pcf8591 3363 0 - Live 0x00000000 mean?