Re: [lcd4linux] (no subject)

[Yago F. H. <st...@so...>]

Dear developers:

I've tried with picoLCD 2x20 with not very good results in the project I
am working in, so I have bought a new
LCD module picoLCD Graphic USB 256x64 with better results. This display
has 5 buttons that lcd4linux reads right.

The problem is that I need to give functionalities to these buttons and
have tried to read the whole wiki and using the 
help and the plugins. I have tried to give a button the function of
poweroff using the exec plugin, and to other the 
function to switch on and off the backlight with the command.

LCD::backlight(0)
LCD::backlight(1)

I have tried to use the command with evaluator as

expression
button_action=nkey==2?LCD::backlight(0):button_action;nkey==2?1:0

But after killing and restarting lcd4linux begins to run and to send
everything to the display until it comes to this line
and then exits.

My version is: Version 0.10.2-SVN-796 (the one that comes bundled with
picolcd)

Can you please help me to make it work!

Thank you

Yago Fernandez Hansen


This is the important part of my configuration.


Display picoLCD {
    Driver   'picoLCDGraphic'
    Size     '256x64'
    Contrast  230
    Backlight 1
    Inverted  1
    Icons     1
}

Variables {
   tick 500
   tack 100
   minute 60000
   n 0
   nkey 0
   button_text ' '
   backlight 1
   huaweiT 500
}

# Leer las pulsaciones del display LCD
Widget TimerW {
   class 'Timer'
   expression n=LCD::GPI(1);nkey=n!=0?n:nkey
   active 1
   update tack
}

Widget GPO_kf1 {
    class 'GPO'
    expression
button_action=nkey==1?file::readline('/mnt/cfdata/logs/lcd2.txt',1):button_action;nkey==1?1:0
    update 100
}

Widget GPO_kf2 {
    class 'GPO'
    expression button_action=nkey==2?exec('poweroff',
1000):button_action;nkey==2?1:0
    update 100
}
Widget Button_action {
    class 'Text'
    expression button_action
    width 44
    update tack
}

Layout picoLCD {
#    Layer 1 {
#           X0.Y0 'BandwidthImage'
#       }
#    Layer 1 {
#       X0.Y0 'CpuImage'
#    }
    Row1 {
        Col1 'CPULabel'
        Col6 'CPU'
        Col11 'CPUBar'
        Col23 'RAMLabel'
        Col28 'RAMFree'
        Col33 'RAMTotal'
    }
    Row2 {
        Col1 'FSSpaceLabel'
        Col6 'FSSpace'
#       Col1 'IDELabel'
#       Col6 'IDEIn'
#       Col17 'IDEOut'
        Col23 'ACTLabel'
        Col28 'IDEBar'
    }
    Row3 {
        Col1 'ETHLabel'
#       Col6 'ETHIn'
#       Col17 'ETHOut'
        Col11 'ETHBar'
        Col23 'PPPLabel'
#       Col24 'HuaweiOperator'
#       Col34 'HuaweiMode'
    }
    Row4 {
    }
    Row5 {
        Col1 'WLAN1Label1'
        Col8 'WLAN1FREQ'
        Col14 'WLAN1MODE'
#       Col26 'WLAN1Label3'
#       Col32 'WLAN1SIGNAL'
        Col23 'WLAN2Label1'
        Col30 'WLAN2FREQ'
        Col36 'WLAN2MODE'
#       Col26 'WLAN2Label3'
#       Col32 'WLAN2SIGNAL'
    }
    Row6 {
        Col1 'StatusLCD'
    }
    Row7 {
        Col1 'Button_action'
    }

    Row8 {
        Col1 'Time'
        Col10 'WSOS'
#       Col22 'Uptime'
#       Col1 'Uptime'
#       Col1 'BottomTicker'
    }
    #Layer 2 {
    #   X0.Y0 'ImageTest'
    #}
    Timer1 'TimerW'
    GPO2 'GPO_kf1'
    GPO3 'GPO_kf2'
}
Display 'picoLCD'
Layout  'picoLCD'






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