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I2c Woes

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Lepotato with Armbian Jammy

 

armbianmonitor -u is here: https://pastebin.com/UVbLxVH0

 

Trying to use I2c to drive a SSD1306 type oled screen.

 

All wires have been tested for continuity and are good.

Screen is connected as follows:

Screen SDA -> Pin 27

Screen SCL -> Pin 28

Screen VCC -> Pin 4

Screen GND -> Pin 6

 

 

ive enabled i2c-a and i2c-b via armbian-config

 

i2cdetect -y 0

  0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --          

 

i2cdetect -y 1

 0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- -- 

 

and finally lsmod | grep i2c shows nothing

What am I doing wrong here?

  • Author

Edit: problem solved with armbian-add-overlay i2c-b.dts

Edited by echo7394

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