Re: [lcd4linux] problems with first line on 20x4

[Richard <sf...@16...>]

Leszek100tka wrote:
> Hello,
> 
> I have a 20x4 lcd display (of course hd44780), my config looks like something 
> here below (I know that it should be written in a different way, but now i 
> really dont know how:):
> 
> 
> Widget Load1 {
>     class 'Text'
>     expression loadavg(1)
>     prefix 'Load: '
> #   postfix loadavg(1)>1.0?'!':' '
>     width 10
>     precision 2
>     align 'L'
>     update tick
> }
> 

...


> Display 'HD44780-generic'
> Layout 'L20x4'
> Variables {
>    tick 500
>    tack 100
>    minute 60000
> }
> 
> and the problem is that there is something wrong with the first line on LCD. 
> Now I have on the first line 12:07 some spaces and at the end of the line 
> 6:03:15 (counting up - its uptime). I see that its really messed up, because 
> there should be up days 0 6:03:15.
> 
> When i`ve uncommented Row3 / Col5 with that exec formula, the uptime line is 
> displayed correctly. 
> 
> Why there is some connections between I and III line? sometime i`ve noticed 
> that when i start lcd4linux, the display looks good, then i restart lcd4linux 
> and first line is messed up.
> 
> Next i`ve problem with reading data from file, i`ve temperature in one file. 
> I`m trying do read it with exec and cat, no results only some garbage:
> 
> sh: -c: line 1: syntax error near unexpected token `)'
> sh: -c: line 1: `cat /home/hardtmuth/my_files/temp_temp/temp_raw.txt, 1000)'
> exec error: could not read from pipe 
> 'cat /home/hardtmuth/my_files/temp_temp/temp_raw.txt, 1000)': Success
> 
> and doing this in a different way, by file::readline, i get:
> 
> Evaluator: unknown function 'file::readline' in 
> <file::readline('/home/hardtmuth/my_files/temp_temp/temp_raw.txt', 1000)>
> 
> what am i doing wrong? Should I pass when i was compiling lcd4linux arguments 
> with plugins to include or by default all plugins are compiled in?
> 
> Sorry for huge post, but i think that posting in one huge post is better that 
> few smaller :).
> 
Hi Leszek100tka (?)

Works for me on a USB 20x4 - I prefixed the text in your post with

Display USBLCD20x4 {
    Driver 'LCD2USB'
    Size '20x4'
    asc255bug 1
    Icons 1
}

and replaced the first line in final stanza with

# Display 'HD44780-generic'
Display 'USBLCD20x4'

- otherwise *exactly* as you posted.

Maybe try moving the 'Display' stanza to the top?
Also - check the driver is valid / installed.


Now I want to get the third line to show memory & especially swap (for
use on an old machine with only 256M)...

BTW: I spotted a missing closing bracket ")" in the 2 lines like this:

expression (netdev('eth0', 'Rx_bytes', 500)/1024)
                                                ^
------------------------------------------------/

Works both with and without this though!

Hope this is use
-- 
Regards
Richard (aka MQ)
mailto:sf...@16...