I2C service ?

[kris777]

What should the correctly enabled I2C service (for a 40x2 LCD) look like on Bananapim2pro? Should I edit the armbianEnv.txt file and add, for example, the following entry: overlays=i2c0 i2c1?
The armbian-config service is a bit confusing, and after editing it, I get this:

........................
verbosity=1
console=both
overlay_prefix=meson
fdtfile=amlogic/meson-sm1-bananapi-m2-pro.dtb
rootdev=UUID=a4fb8074-c453-45da-ab31-4d61dca46cfa
rootfstype=ext4
overlays=i2cA i2cB
usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u

..................

There are other options, but they probably don't apply to bananapim2pro.  :

sm1-odroid-c4-i2c0

g12b-bananapi-cm4-i2c2

g12a-radxa-zero-i2c-ao.... 

 

[Igor]

9 hours ago, kris777 said:

There are other options, but they probably don't apply to bananapim2pro.  :

Worth trying all of them.

[kris777]

Thanks for the info to try other options  🙂

Thanks for the tip, I'll try other options 🙂 It worked for: odroid-c4 ... basically, the settings are the same as for the OrangePI3LTS, I'm talking about connecting cables to a 40x2 / 20x2 LCD.
The diagram for the BananapiM2pro is as follows:

My Winstar 40x2 OLED LCD compatible with drivers: hd44780 / driver: WS0010 is detected in the system as: 3f

..................................

sudo i2cdetect -y 0
[sudo] kris: 
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 3f 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --        

  ..................................

You can also enter the appropriate values yourself in the file:

   sudo nano /boot/armbianEnv.txt

verbosity=1
console=both
overlay_prefix=meson
fdtfile=amlogic/meson-sm1-bananapi-m2-pro.dtb
rootdev=UUID=a4fb8074-c453-45da-ab31-4d61dca46cfa
rootfstype=ext4
overlays=sm1-odroid-c4-i2c0 sm1-odroid-c4-i2c1
usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u

 

 

regards
 

 

Edited 1 hour ago by kris777