linux gfx compile error glcdfont.c

[jfs10]

When trying to compile the examples for the 1.8TFT screen, I get the following error:

/usr/share/arduino/libraries/Adafruit_GFX/glcdfont.c:9:22: error: variable 'font' must be const in order to be put into read-only section by means of '__attribute__((progmem))'

I am running Fedora 17 and arduino 1.0.1. I followed the links to download the latest libraries, still no success.

Does anyone have a solution to this problem?

Thanks

[adafruit]

can you try compiling the code on a windows/mac computer? it looks like the compiler is different for linux IDE?

[jfs10]

Yes, it does work in Windows. I tried in version 1.0 then upgraded to version 1.0.3. Any chance of getting it to work in Linux again?

Thanks

[adafruit]

the problem is if we fix it for linux, it breaks everything else - not sure of the solution at this time but we're aware of it and will try to find a solution

[jfs10]

Can you share the fix with me, or could you include both linux and windows files in the distribution and the linux user can rename the to a name that works and is consistent with the documentation. So, Adafruit_ST7735_linux.cpp would need to get renamed to Adafruit_ST7735.cpp for the linux user. Not ideal, but I would think doable.

Thanks

[slibutti]

I fixed glcdfont.c so it will compile on a linux based system running Arduino IDE by doing the following:

On line 9:

static unsigned char font[] PROGMEM = {

I added "const" to the line as follows:

const static unsigned char font[] PROGMEM = {

and now it compiles and runs.

S

[jpg123]

The previous fix covered the compile prob with glcdfont.c, but it now has a host of other compile errors.
I'm also trying to get this to work on a linux IDE That is Raspberry Pi + Gertboard + Atmel 328

Is there a fix for the linux version problem yet in the pipeline ? As per the Orig post, a separate - linux - Raspberry Pi - Raspbian version fix would be good.

Many thanks

[jsalassi]

same problem here. After updating line 9 of gldfont.c to const static unsigned char font[] PROGMEM = { i get a host of the following compile errors:

/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:101:16: error: ‘prog_uchar’ does not name a type
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:159:12: error: expected unqualified-id before ‘,’ token
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:161:11: error: expected constructor, destructor, or type conversion before ‘=’ token
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:196:13: error: expected unqualified-id before ‘,’ token
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:198:16: error: expected constructor, destructor, or type conversion before ‘=’ token
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:205:24: error: expected unqualified-id before ‘,’ token
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:206:14: error: expected constructor, destructor, or type conversion before ‘=’ token
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:213:19: error: expected unqualified-id before ‘,’ token
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:215:11: error: expected constructor, destructor, or type conversion before ‘=’ token
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp: In member function ‘void Adafruit_ST7735::initB()’:
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:306:14: error: ‘Bcmd’ was not declared in this scope
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp: In member function ‘void Adafruit_ST7735::initR(uint8_t)’:
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:312:14: error: ‘Rcmd1’ was not declared in this scope
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:314:17: error: ‘Rcmd2green’ was not declared in this scope
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:319:17: error: ‘Rcmd2red’ was not declared in this scope
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:321:15: error: ‘Rcmd3’ was not declared in this scope

[jsalassi]

OK so i'm not sure whats up with the libraries on github but here is how i resolved my problem. I credit Adafruit and the resources from the Adafruit forum for finding resolution to my problem.

1. Download libraries for my screen (sain smart 1.8" TFT LCD ST7735) from http://www.sainsmart.com/zen/documents/20-011-920/TFT18.rar

2. Unpack the content of zip file and copy into appropriately named "ST7735" libraries folder.

3. Restart Arduino IDE

3a. open up the file>examples>ST7735>graphicstest

3b. Save and give it a new name.

4. Try to compile and get error about glcdfont.c not a constant. Updated line 8 of glcdfont.c to be: const static unsigned char font[] PROGMEM = {

5. Try to compile again and get error about WProgram.h. Updated line 6 of ST7735.h to be: #include <Arduino.h>

6. Compiled this time with no issues.

[jsalassi]

Any update on this issue?

/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:101:16: error: ‘prog_uchar’ does not name a type
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:159:12: error: expected unqualified-id before ‘,’ token
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:161:11: error: expected constructor, destructor, or type conversion before ‘=’ token
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:196:13: error: expected unqualified-id before ‘,’ token
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:198:16: error: expected constructor, destructor, or type conversion before ‘=’ token
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:205:24: error: expected unqualified-id before ‘,’ token
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:206:14: error: expected constructor, destructor, or type conversion before ‘=’ token
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:213:19: error: expected unqualified-id before ‘,’ token
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:215:11: error: expected constructor, destructor, or type conversion before ‘=’ token
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp: In member function ‘void Adafruit_ST7735::initB()’:
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:306:14: error: ‘Bcmd’ was not declared in this scope
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp: In member function ‘void Adafruit_ST7735::initR(uint8_t)’:
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:312:14: error: ‘Rcmd1’ was not declared in this scope
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:314:17: error: ‘Rcmd2green’ was not declared in this scope
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:319:17: error: ‘Rcmd2red’ was not declared in this scope
/home/jsalassi/sketchbook/libraries/Adafruit_ST7735/Adafruit_ST7735.cpp:321:15: error: ‘Rcmd3’ was not declared in this scope

[szarak]

Any update on this issue?

@jsalassi
I've came across same issues, but it occured that upgrading Arduino IDE fixed the issue.

Previously I used Arduino software from Ubuntu 12.10 repo, but I've manually downloaded Arduino 64bit version from official website. The code used to produce exactly the same errors like yours, now the same code produces shiny lorem ipsum text that I'm looking at right now

Let me know if it worked for you as well!

[jsalassi]

ok ill try a new version of the IDE and let you know what happens.