Matrix user forums

Hello,

Can anyone tell me what is the ASCII for sign of degree to display it on LCD? I was tying that hitachi code table but it was showing me totally different sign.

Best regards,
Mantas

Hello,

Here is the datasheet for our EB005: http://www.matrixmultimedia.com/resourc ... 5-30-4.pdf

And the Hitachi module: http://www.matrixmultimedia.com/resourc ... asheet.pdf

According to those the LCD is

239 : 1110 1111 : EF

Hi
Ive found the following codes work on my hardware

ASCII 223 - on a Matrix 2 x 16 lcd
ASCII 178 - on my custom 4 x 20 lcd

Though they both still use the Hitachi compatible chipset.
Note they dont show correctly in simulation.

Thanks John, the 223 is the correct one. My mistake was that I entered the binary format, not the decimal

Best regards,
Mantas

Hi Mantas,
Hitachi 44780 LCD ascii table can be found in the bottom chart of the link
http://meteosat.pessac.free.fr/Cd_elect ... itachi.htm

°(deg) is
Decimal=223
Hex= 0xDF
Binary=0b11011111

so for Hitachi LCD (EB005 Board MM) you have to use any of the above format. But as Flowcode simulation use PC ascii code that's why you will see ß (Beta) in simulation in place of °(deg)...But in hardware you will see °(deg).

Actually the link below is for the ascii table used in PC...
http://www.ascii-code.com/
In the extended ascii codes you can find...

°(deg) is
Decimal=176
Hex= 0xB0
Binary=0b10110000

so if you are sending data to PC using RS232 interface you have to use the above in any of the format.

ß (Beta)
Decimal=223
Hex= 0xDF
Binary=0b11011111

You see 223 is ß(Beta) in PC..
Hope it's clear now.
Enamul

Hi Enamul, and thnx for indepth explanation, i will keep it in mind

Best regards,
Mantas

Hi,
You are most welcome.
Enamul