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Re: [lcd4linux] Parallel HD44780 Lcd display keeps scrolling
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From: Joao B. <bon...@ya...> - 2011-11-10 20:19:04
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Hi,
you're absolutely right Mattia.
Here is the output:
# lcd4linux -Fvvq -f lcd4linux.conf
Version 0.10.1-RC2-796 starting
plugin_cfg.c: Variable tick = '500' (500)
[KVV] Using station 89
[KVV] Using default port 80
[KVV] Using default refresh interval of 60 seconds
[KVV] Default abbreviation setting: off
lcd4linux.c: initializing driver HD44780
HD44780: $Rev: 773 $
HD44780: using model 'generic'
HD44780: using parallel port
HD44780: using 1 Controller(s)
HD44780: using 8 bit mode
udelay: using gettimeofday() delay loop
HD44780: using ppdev /dev/parport0
HD44780: wiring: DISPLAY:RS -
PARPORT:INIT (Pin 16)
HD44780: wiring: DISPLAY:RW - PARPORT:AUTOFD (Pin 14)
HD44780: wiring: DISPLAY:ENABLE - PARPORT:STROBE (Pin 1)
HD44780: wiring: DISPLAY:ENABLE2 - PARPORT:GND
HD44780: wiring: DISPLAY:ENABLE3 - PARPORT:GND
HD44780: wiring: DISPLAY:ENABLE4 - PARPORT:GND
HD44780: wiring: DISPLAY:BACKLIGHT - PARPORT:GND
HD44780: wiring: DISPLAY:GPO - PARPORT:GND
HD44780: wiring: DISPLAY:POWER - PARPORT:GND
HD44780: timing: CY = 1000 ns (default)
HD44780: timing: PW = 450 ns (default)
HD44780: timing: AS = 140 ns (default)
HD44780: timing: AH = 20 ns (default)
HD44780: timing: INIT1 = 4100
us (default)
HD44780: timing: INIT2 = 100 us (default)
HD44780: timing: EXEC = 80 us (default)
HD44780: timing: WRCG = 120 us (default)
HD44780: timing: CLEAR = 2250 us (default)
HD44780: timing: HOME = 2250 us (default)
HD44780: timing: ONOFF = 2250 us (default)
HD44780: using busy-flag checking
HD44780: using 0 GPI's and 0 GPO's
initializing layout 'Default'
lcd4linux.c: starting main loop
HD44780: timeout waiting for busy flag on controller 1 (0x80)
^Clcd4linux.c: got signal 2
lcd4linux.c: leaving main loop
HD44780: shutting down display.
HD44780: shutting down GPIO driver.
drv_generic_parport.c: closing ppdev /dev/parport0
The lcd4linux.conf file is:
Display HD44780-20x1 {
Driver 'HD44780'
Model 'generic'
UseBusy 1
Port '/dev/parport0'
Size '20x1'
Wire {
RW 'AUTOFD'
RS 'INIT'
ENABLE 'STROBE'
ENABLE2 'GND'
GPO 'GND'
}
}
Widget CPU {
class 'Text'
expression 'CPU'
width
3
align 'L'
}
Layout Default {
Row1 {
Col1 'CPU'
}
Variables {
tick 500
}
Display 'HD44780-20x1'
Layout 'Default'
Best regards,
Joao
________________________________
From: Mattia Jona-Lasinio <mat...@gm...>
To: "lcd...@li..." <lcd...@li...>
Sent: Thursday, 10 November 2011, 12:07
Subject: Re: [lcd4linux] Parallel HD44780 Lcd display keeps scrolling
Hi,
can you be more specific on what exactly you do and what exactly happens?
Posting your current lcd4linux configuration file and a verbose output
from lcd4linux wouldn't harm either.
Best,
M
On Thu, Nov 10, 2011 at 12:57 PM, Joao Bonina <bon...@ya...> wrote:
> Hello,
> I just got a parallel HD44780-compatible lcd display and got it working with
> LCD4Linux.
> The first time I tried it, it workined really fine with the CPU widget
> showing.
> Then, I stopped/started LCD4Linux, and the text started scrolling
> left-to-right. This happens always, no matter what settings I tried to
> change or what else.
> LCD4Linux version is 0.10.1-RC2 on Debian Squeeze with 2.6.38 kernel.
>
> Can anyone give me a hint on how to debug this?
> Cheers,
> Joao
>
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