LCD degree symbol with sprintf (BoostC) - Electronic Circuits Projects Diagrams Free

futz · 30th May 2008, 04:00 AM

Dumb question I'm sure, but how do I display a degree symbol ($df) on my LCD? I format my output with sprintf.

Code:

sprintf(string,"Temp: %u°C",an2);

That degree symbol in there was copied/pasted in. The LCD displays a hyphen (minus sign).

blueroomelectronics · 30th May 2008, 04:10 AM

It's 223 decimal on a typical LCD.

futz · 30th May 2008, 04:15 AM

Quote:

Originally Posted by blueroomelectronics

It's 223 decimal on a typical LCD.

Yes, $df = 223. That's why I mentioned it in my op. But I can't figure out how to get it displayed with sprintf. Sourceboost's sprintf is a little bit non-standard, and their docs on it aren't very thorough.

In assembler it would be very simple.

blueroomelectronics · 30th May 2008, 04:20 AM

ASCII degree symbol is 248, can you type <alt> 0223 in the quotes?

futz · 30th May 2008, 04:26 AM

Quote:

Originally Posted by blueroomelectronics

ASCII degree symbol is 248, can you type <alt> 0223 in the quotes?

It is? Thank you. I'll make a note!
EDIT: Whoops! 248 ($f8) does not work. I get a lowercase x with an "overscore" above it.

I fumbled on a way to do it. Had to split the line up into three separate outputs, but it works now.

Code:

		sprintf(string,"Temp: %u",an2);
		lcd_string(string);
		sprintf(string,"\xdf",0);
		lcd_string(string);
		sprintf(string,"C",0);
		lcd_string(string);

futz · 30th May 2008, 04:32 AM

Quote:

Originally Posted by blueroomelectronics

ASCII degree symbol is 248, can you type <alt> 0223 in the quotes?

<alt> is not a valid escape code for BoostC's sprintf (or any that I've used). All I get displayed is "<alt>223".

futz · 30th May 2008, 04:46 AM

Quote:

Originally Posted by futz

I fumbled on a way to do it. Had to split the line up into three separate outputs, but it works now.

Code:

		sprintf(string,"Temp: %u",an2);
		lcd_string(string);
		sprintf(string,"\xdf",0);
		lcd_string(string);
		sprintf(string,"C",0);
		lcd_string(string);

Got it down to two sends

Code:

		sprintf(string,"Temp: %u\xdf",an2);
		lcd_string(string);
		sprintf(string,"C",0);
		lcd_string(string);

blueroomelectronics · 30th May 2008, 05:14 AM

You must type <alt> 223 on the number pad if I recall. Sometimes you need the leading zero. I've not used the method for ages.

PS I see on your site you've got one of dipmicros ICD2 clones, I wonder how Roman's going to make it 3.3V as it looks about the same as the Inchworm.

On a sidenote you can simply connect the Inchworm+ or Junebug to any 3.3V PIC as long as it has it's own 3.3V power supply and the PGC / PGD pins don't have analog.

BaCaRdi · 30th May 2008, 05:27 AM

223 is correct but with the alt method I think it depends on the font in windows. I know in windows you do need the leading zero, but they made a mess of the good old ascii table.lol I can use a 0176 to make this -->° Did I ever tell you I hate windows?..lol

-BaC

Quote:

Originally Posted by blueroomelectronics

You must type <alt> 223 on the number pad if I recall. Sometimes you need the leading zero. I've not used the method for ages.

futz · 30th May 2008, 05:32 AM

Quote:

Originally Posted by BaCaRdi

I just looked through the manual a bit does this work?

Code:

sprintf(string,"Temp: %u\223",an2);

I see \x is for hex and df is 223 in decimal, so I think the escape code is the \ and in the manual it says \xnn for hex and \nn for decimal so maybe it's just sprintf(string,"Temp: \223",an2); just curious now. lol

That works.

Now it fits all on one line again. Excellent!

Code:

		sprintf(string,"Temp: %u\223C",an2);

blueroomelectronics · 30th May 2008, 05:32 AM

The 223 is strictly for the LCD, it'll show up as who knows what in XP but the LCD should be happy.

Edit: glad it's working futz, plenty of smart folks hang around here. Nicely done BaCarDi

BaCaRdi · 30th May 2008, 05:35 AM

OOps I deleted this by mistake!..lmao
I'll put it back to make sense of your post futz, glad it worked out

-----------------------------------------------------------
I original said:

I just looked through the manual a bit does this work?

Code:

sprintf(string,"Temp: %u\223",an2);

I see \x is for hex and df is 223 in decimal, so I think the escape code is the \ and in the manual it says \xnn for hex and \nn for decimal so maybe it's just sprintf(string,"Temp: \223",an2); just curious now. lol

BaCaRdi · 30th May 2008, 05:39 AM

Yes but if your in windows trying the alt method that is exactly what you would get

Cheers Blue

-BaC

Quote:

Originally Posted by blueroomelectronics

The 223 is strictly for the LCD, it'll show up as who knows what in XP but the LCD should be happy.

Edit: glad it's working futz, plenty of smart folks hang around here. Nicely done BaCarDi

futz · 30th May 2008, 05:52 AM

Quote:

Originally Posted by blueroomelectronics

PS I see on your site you've got one of dipmicros ICD2 clones, I wonder how Roman's going to make it 3.3V as it looks about the same as the Inchworm.

Here are his notes. He's not exactly speeding ahead with the project as he has a PICkit 2 clone for sale now (and so doesn't really need the Stella anymore) and is very busy with other things.

BaCaRdi · 30th May 2008, 06:08 AM

OK now I am really curious, I'll bite and click the link..hehe

Ahhh I remember these days, now I will have to read up for a while..lol

EDIT:
Ok now I need to start using c again too...lol Damn that learning curve!
I really like that 2-wire LCD interface!

-BaC

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30th May 2008, 04:00 AM	#1
futz	LCD degree symbol with sprintf (BoostC) Dumb question I'm sure, but how do I display a degree symbol ($df) on my LCD? I format my output with sprintf. Code: sprintf(string,"Temp: %u°C",an2); That degree symbol in there was copied/pasted in. The LCD displays a hyphen (minus sign). __________________ ========================= Futz's Microcontrollers & Robotics ========================= Last edited by futz; 30th May 2008 at 04:01 AM.

30th May 2008, 04:10 AM	#2
blueroomelectronics	It's 223 decimal on a typical LCD. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com/

30th May 2008, 04:20 AM	#4
blueroomelectronics	ASCII degree symbol is 248, can you type <alt> 0223 in the quotes? __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com/

30th May 2008, 05:14 AM	#8
blueroomelectronics	You must type <alt> 223 on the number pad if I recall. Sometimes you need the leading zero. I've not used the method for ages. PS I see on your site you've got one of dipmicros ICD2 clones, I wonder how Roman's going to make it 3.3V as it looks about the same as the Inchworm. On a sidenote you can simply connect the Inchworm+ or Junebug to any 3.3V PIC as long as it has it's own 3.3V power supply and the PGC / PGD pins don't have analog. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com/ Last edited by blueroomelectronics; 30th May 2008 at 05:18 AM.

30th May 2008, 05:32 AM	#11
blueroomelectronics	The 223 is strictly for the LCD, it'll show up as who knows what in XP but the LCD should be happy. Edit: glad it's working futz, plenty of smart folks hang around here. Nicely done BaCarDi __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com/ Last edited by blueroomelectronics; 30th May 2008 at 05:35 AM.

30th May 2008, 05:35 AM	#12
BaCaRdi	OOps I deleted this by mistake!..lmao I'll put it back to make sense of your post futz, glad it worked out ----------------------------------------------------------- I original said: I just looked through the manual a bit does this work? Code: sprintf(string,"Temp: %u\223",an2); I see \x is for hex and df is 223 in decimal, so I think the escape code is the \ and in the manual it says \xnn for hex and \nn for decimal so maybe it's just sprintf(string,"Temp: \223",an2); just curious now. lol __________________ Error[888] "while trying to load":[reality.sh] kernel: [Panic!]...{Universe has been Modified!}... Information Underground - Have you got the Bollox? Last edited by BaCaRdi; 30th May 2008 at 05:37 AM.

30th May 2008, 06:08 AM	#15
BaCaRdi	OK now I am really curious, I'll bite and click the link..hehe Ahhh I remember these days, now I will have to read up for a while..lol EDIT: Ok now I need to start using c again too...lol Damn that learning curve! I really like that 2-wire LCD interface! -BaC __________________ Error[888] "while trying to load":[reality.sh] kernel: [Panic!]...{Universe has been Modified!}... Information Underground - Have you got the Bollox? Last edited by BaCaRdi; 30th May 2008 at 06:18 AM.