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Re: [ts-7000] Re: ts 7300 LCD drıver problem for HD44780

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Subject: Re: [ts-7000] Re: ts 7300 LCD drıver problem for HD44780
From: Jim Jackson <>
Date: Sun, 10 Oct 2010 11:49:25 +0100 (BST)
Hi

> > > Did you write the software yourself? Or did you use some one else's code?
> > > If so can you give a url of where you got the code from?
> > 
> > The attachments should be stripped by Yahoo! and put into the files 
> > section I believe.
> >
> Hi I've just uploaded a software which is called metodolcdyteclado.rar, 
> you may serve

Sorry I've not looked at the software, but I guess that the problem is that
you have not read the manual for the ts7300 correctly. On page 44 of the 
manual it says...

"Note 
On the TS-7300 only, the LCD_7 (eight data bit) is accessed on bit 0 
of Port C (address location 0x8084_0008 is Port C Data Register and 
0x8084_0018 is Port C Directon Register)."

This means that bits 0-6 are on Port A - as in the ts7200. If all the data 
you are sending to the LCD has the top bit zero, then you might get a way
with tieing the bit7 of the lcd to ground and just driving the display with 
the standard program. If however you are sending data with the top bit set, 
then the code will need extensive revision to send bits 0-6 over portA and 
bit 7 to port C bit 0.[1]

cheers
Jim

[1] As you would have to do if you were using the LCD in 4 bit data mode





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