Hello,

I'm trying to interface an I2C device to Orange Pi Zero with armbian.

 

By running i2cdetect I obtain the following result:

 

     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: -- -- -- -- -- -- -- --

 

I've tried to load i2c-dev module but I don't see it in lsmod...

 

Also after that I've run I2c detect I found a lot of those lines in dmesg:

[   58.110105] sunxi_i2c_do_xfer()985 - [i2c0] incomplete xfer (status: 0x20, dev addr: 0x77)

 

I0ve already checked the script.bin and seems that twi are all enabled. 

 

Can you help me?

 

Thanks a lot

 

I also had this result until we changed the order of the cables : SDA / SCL 

 

i2cdetect -y 0

i2cdetect -y 1

Look here: 

i2c--smbus-and-armbian-linux

i2c interface on orange pi lite

 

Orange Pi I2C

orange pi / I2C / LCD 2x16 / internetradio

Lcdproc also works .... but it requires compiling under the driver: hd44780

hd44780.so-Armbian-5.25-Ubuntu-xenial-3.4.11

Or your own compilation according to this howto 

https://bbs.nextthing.co/t/lcdproc-with-20-character-by-4-line-lcd/8789