Sorry for the delay, i've tested it also with the latest git, but it still 
doesn't work anymore,

Even the clear command:

/opt/owfs/bin/owwrite  /29.09C211000000/LCD_H/clear 1


Easy for me to say,  i'm not a c programmer. But i'm wondering has the code 
changed a lot since 2.8?


Nico

Nico Bouthoorn wrote:
> I've the same issue.  Version owfs  2.8p15-1 is working fine, running Debian 
> GNU/Linux 7 on a beaglebone.
>
> This schematic: https://fstab.nl/en/lcd_owfs
>
> When i switch to version owfs-3.1p1   it doesn't work anymore.
>
> Commands like this:
>
>    owwrite /29.09C211000000/LCD_H/clear 1
>    owwrite /29.09C211000000/LCD_H/screenyx 1,1:Kr19.6
>    owwrite /29.09C211000000/LCD_H/screenyx 1,9:Bn:7.4
>
>
>
> Nico
>
> Andy Carter wrote:
>> I have had 1-wire devices set up and working successfully for some years but
>> have problems with a new Louis Swart 20x4 LCD.
>>
>> My setup is a Sheepwalk Electronics DS2482-800 i2c based RPI3 host adapter on
>> a Raspberry Pi2 currently running raspbian jessie and default owfs-2.9p8.
>> Logging/control is with fhem, a perl based home automation application.
>>
>> Connecting the LCD to the bus correctly identifies it.
>> I can send text strings to it but it misses the first character and adds || 
>> to
>> the end eg. sending fred displays red||.
>> In order to turn the backlight on I have to send two digits such as 11, a
>> single 1 is ignored.
>>
>> A net search reveals a few similar scattered reports but no solution as far 
>> as
>> I can see.
>>
>>
>> I have set up another Pi with an earlier 26 pin version of the same host
>> adapter.
>>
>> A raspbian jessie install (owfs-2.9p8) shows the same as above - to be
>> expected.
>>
>> A raspbian wheezy install (default owfs-2.8p15) shows all characters sent
>> correctly, with no trailing ||.
>>
>> Replacing owfs-2.9p8 files with owfs-2.8p15 versions on jessie shows all
>> characters sent correctly, with no trailing ||.
>>
>> I have also tried armhf owfs-3.1p1-2 versions on jessie but that shows the
>> same issues as owfs-2.9p8
>>
>> I borrowed a perl script from elsewhere on this list, running it from an AMD
>> jessie desktop to the Pi server produces the same results as above ie.
>> owfs-2.8p15 OK, owfs-2.9p8 amd owfs-3.1p1-2 not OK.
>>
>> I don't have any hardware to set up 1-wire on anything other than the Pi
>> unfortunately.
>>
>> Any thoughts on where I should go from here?
>>
>> TIA
>>
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>

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