something else: ä and Ä and Ö and ö don't get displayed properly. this is a screen shot: it should read - "Älkää"
Bret[/img]
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| 20x4 HD44870 - no third line? http://forum.lcdinfo.com/viewtopic.php?f=10&t=860 |
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| Author: | bretti_kivi [ Thu Oct 07, 2004 14:46 ] |
| Post subject: | 20x4 HD44870 - no third line? |
hi, i've been playing with LCDInfo for a short while and come across something wierd. any time i try to put anything in the lower two lines of my 20x4, i get nothing. nada. I know the screen works as until about an hour ago it was happily delivering winamp track info.... hmm.... and the top two lines work perfectly. setup: 8 bit data; HD 44870. LPT1, WinXP SP2, Thinkpad R40. LCDInfo 0.6 Build 18. have i missed something? Bret |
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| Author: | bretti_kivi [ Thu Oct 07, 2004 15:12 ] |
| Post subject: | |
something else: ä and Ä and Ö and ö don't get displayed properly. this is a screen shot: it should read - "Älkää"
Bret[/img] |
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| Author: | Henri [ Sat Oct 09, 2004 11:13 ] |
| Post subject: | |
I haven't tested the HD44780 driver that much as it's not written by me but I recently got a 4x40 HD44780 display and when testing with that one it worked fine for me. What happens if you try with the 4x40 setting ? The reason that letters like ä, ö, Ä, Ö don't display correctly is that the the mapping in the HD44780 chip doesn't match the ASCII table. Workaround for this could be made to the driver. If someone wants to have a try in fixing it I put the source here. It has been published in the forum before but that is the latest version just to be sure. |
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| Author: | rudi Grobler [ Fri Oct 15, 2004 10:28 ] |
| Post subject: | |
I am now busy updating this driver, I will try to fix any errors and do a proper doc about it... If the last 2 lines don't work, then your e2 line is either not connected or configured to be the wrong pin. E2 is the chip select for the second hd44780 chip on the 4 line lcds... |
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| Author: | rudi Grobler [ Fri Oct 15, 2004 14:20 ] |
| Post subject: | |
The problem is now fixed... |
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| Author: | rudi Grobler [ Fri Oct 15, 2004 14:21 ] |
| Post subject: | |
Sorry, the driver can be found here: http://www.cme.co.za/rudi |
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| Author: | rudi Grobler [ Fri Oct 15, 2004 15:49 ] |
| Post subject: | |
Here is a description of the changes made: http://www.cme.co.za/rudi/pivot/entry.php?id=6 New version is now available... |
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