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How to display special character degree c on LCD

 
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young



Joined: 24 Jun 2004
Posts: 285

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How to display special character degree c on LCD
PostPosted: Thu Jul 01, 2004 8:03 am     Reply with quote
I want to show temperature in degree c in my LCD, how to print out this special character degree C simble?
rwyoung



Joined: 12 Nov 2003
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Location: Lawrence, KS USA

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PostPosted: Thu Jul 01, 2004 8:09 am     Reply with quote
Find the data sheet for your LCD display. Most manufacturers include a table of displayable symbols. Use the table to figure out the code to send.

If the table does not have the degree symbol, then you can make your own and store it in the CGRam of the display and call that instead.
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Rob Young
The Screw-Up Fairy may just visit you but he has crashed on my couch for the last month!
young



Joined: 24 Jun 2004
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PostPosted: Thu Jul 01, 2004 8:28 am     Reply with quote
I checked theback of my lcd it is CMC216NO6, I think it is from CMC company, however I could not find related datasheet anywhere, any suggestion that where I could get it?
Guest
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Here's the data sheet
PostPosted: Thu Jul 01, 2004 8:39 am     Reply with quote
First hit on google brought up the (probable) data sheet for this....

Like most, 0xdf is the degree symbol.....

http://www.spezial.de/doc/cctech/cmc216-01.pdf
dyeatman



Joined: 06 Sep 2003
Posts: 1912
Location: Norman, OK

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CMC216
PostPosted: Thu Jul 01, 2004 8:39 am     Reply with quote
This looks to be it... You will have to check and see.

Used Google and searched for CMC216 to find it.


www.spezial.de/doc/cctech/cmc216-01.pdf
young



Joined: 24 Jun 2004
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PostPosted: Thu Jul 01, 2004 8:49 am     Reply with quote
Thank you, I got it.
young



Joined: 24 Jun 2004
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PostPosted: Thu Jul 01, 2004 9:02 am     Reply with quote
Then after I know the code for degree c, then how should I program it

printf(lcd_putc, "%2d %sc",temperature, 0xdf);? oxdf is the code for degree c.
young



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PostPosted: Thu Jul 01, 2004 9:04 am     Reply with quote
All right, I got it, It is printf(lcd_putc,"%2d %c",temperature, 0xdf);
Thank you again
SimpleAsPossible



Joined: 19 Jun 2004
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PostPosted: Thu Jul 08, 2004 7:43 pm     Reply with quote
How about the escape sequence:
Code:
printf(lcd_putc, "%2d " "\xdf" "C", temperature);

or in octal notation which doesn't require the funny string stuff:
Code:
printf(lcd_putc, "%2d /337C",temperature, 0xdf);
Guest
PostPosted: Fri Jul 09, 2004 7:43 am     Reply with quote
Quote:

How about the escape sequence:
Code:
printf(lcd_putc, "%2d " "\xdf" "C", temperature);


is working fine
however the second command

Quote:

or in octal notation which doesn't require the funny string stuff:
Code:
printf(lcd_putc, "%2d /337C",temperature, 0xdf);


have "printf type is invalide" error
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