Re: [Lcd4linux-devel] RE: [lcd4linux] problem with i2c connected LCD display

[paul k. <pau...@xs...>]

Yes, I have seen that one. Good you bring it up.
Isn't the diagram exactly showing where the problem is?
In the 'past' a User-space Program could talk directly to i2c-dev using 
the i2c_smb functions.
Now it should go through a client.
The question now is: is the pcf8574 kernel module the client or a driver?

Paul

PS:  I did a quick test. Changing the i2c_smb_write functions to an 
ordinary write function and
opening /sys/bus/i2c/0-0026/write as the device file.
lcd4linux starts normal (starting main loop)
The big question remains. Do I have a working display? I wouldn't know. 
I am at work, and the display is at home. So it is going to be a 
surprise for me later today. :-)




Luis.F.Correia wrote:

>Hi!
>
>Just a small sidenote :
>
>This diagram explains how it can be implemented.
>http://secure.netroedge.com/~lm78/docs.html
>
>Luis
>
>  
>