[Lcdproc] 2 line BIGNUM display on HD47780

[Robin Gilks]

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> Robin Gilks wrote:
>> Greetings
>>
>> I know that the current implementation of BIGNUM on the HD47780 display
>> requires at least 4 lines, I wondered if anyone had done it on a two
>> line
>> display using the 8 available user defined characters.
>>
> I've done it about 3 or 3 month ago, the patch against lcdproc 0.5.0 is
> somewhere in the mailinglist (there is a picture of the display too).
> The threat is named: "big numbers on hd44780 cvs". Unfortunately it is
> NOT compatible with the recent CVS-version anymore.
> The Feature had been included in the serialVFD and the
> crystalFontzPacket driver so far. I'll include it into the HD47780
> driver, as soon I have the time to do it and nobody else has done it
> before. I'm also planing to fix the lcdproc-client for the use on ?x16
> and ?x12 displays.
>> I've whipped up two character sets (on paper only so far), one that is
>> one
>> char wide and 2 lines tall and the other 2 chars wide and 2 lines tall.
>>
> The Characters are stored in advbignum.c now. They are 2 lines high, 3
> characters wide and compatible with bigclock of t the lcdproc-client.
> (All big numbers have to be 3 characters wide!)
>> I'm mostly trying for a clock I can read across the room (funny how the
>> eyes start to fade after over half a century!), so I'm only looking for
>> 0-9 and a seperator of some sort (colon or whatever).
>>
>> If someone has already got this wheel, I won't reinvent, it but if there
>> is nothing available in anyones patch library then I'll implement the
>> two
>> ideas I have to see which is the more readable.
>>
>> Cheers for now...
>>
>>

I found it thanks Stefan and it works great. Here is an updated patch
against 0.5.0 stable and also a patch for anyone interested that fixes a
problem with flickering backlight on a single winamp wired hd47780
didplay.

Now to implement bignum time display in Mythtv :-)

-- 
Robin Gilks


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