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Topic: SOLVED - UTFT library error: variable 'SmallFont' must be const... (Read 5439 times) previous topic - next topic


Jul 21, 2012, 05:50 am Last Edit: Jul 22, 2012, 01:16 am by RenatoRod Reason: 1

I need some help to start using the Henning Karlsen's UTFT libraries.
As a newbe I read the libraries reference in the arduino main site and do like this:

- download the .zip file;
- extract content to my Arduino sketch folder / libraries;
- open the UTFT_Demo_320x240.pde;
- click on the verify icon to compile it.

But I'm having the error:
/home/renato/mySketchDir/libraries/UTFT/DefaultFonts.c:14:14: error: variable 'SmallFont' must be const in order to be put into read-only section by means of '__attribute__((progmem))'

Do you have any idea?

PS: the lib site is: http://henningkarlsen.com/electronics/library.php?id=51


Jul 21, 2012, 09:27 am Last Edit: Jul 21, 2012, 09:33 am by dxw00d Reason: 1
It compiled fine for me.

You could try editing /home/renato/mySketchDir/libraries/UTFT/DefaultFonts.c, and changing:

Code: [Select]
fontdatatype SmallFont[1144] PROGMEM={
Code: [Select]
const fontdatatype SmallFont[1144] PROGMEM={


Jul 21, 2012, 02:27 pm Last Edit: Jul 22, 2012, 01:17 am by RenatoRod Reason: 1
OK dxw00d. Its runs, thanks!

I changed like your tip and compile/run it successfully.
I forgot to say that I'm using Debian and gcc 4.7.1

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