Compiler Error in Arduino IDE

[Ralph4711]

When I integrate your display driver into my program and then compile the whole thing I get the following error or note:

warning: "pgm_read_byte_near" redefined
#define pgm_read_byte_near(addr) pgm_read_byte(addr)

C:\Users\OEM\Documents\Arduino\libraries\Nokia_5110_LCD_library\src\Nokia_LCD.cpp:6: note: this is the location of the previous definition
#define pgm_read_byte_near *

how i can fix it please?

[platisd]

Hi, this looks like a warning, not an error, but what platform/mcu are you compiling this for?

[platisd]

Anyway, please check with the latest (2.7.2) version.

[Ralph4711]

Hi, this looks like a warning, not an error, but what platform/mcu are you compiling this for?

I compile it with an ESP32 Wroom in Arduino IDE 2

[Ralph4711]

I have the latest Version 2.7.2 in use at my ESP32 Wroom with Arduino IDE 2

[platisd]

And the warning is still there?!

[Ralph4711]

And the warning is still there?!

Yes

[platisd]

That doesn't make much sense...

1. Did you actually update the library? The new version was published today. Do you have any indications (either in the logs or the library manager) that the new version is being used?
2. Can you attach the entire C:\Users\OEM\Documents\Arduino\libraries\Nokia_5110_LCD_library\src\Nokia_LCD.cpp that's used in your compilation here?
3. What is the exact error you are getting? Copy paste the entire log message.

[Ralph4711]

Here is the Libraries what i load:
Alternatives for Nokia_LCD.h: [Nokia_5110_LCD_library@2.7.2]
ResolveLibrary(Nokia_LCD.h)
-> candidates: [Nokia_5110_LCD_library@2.7.2]

And this is the error what i get now:

In file included from C:\Users\OEM\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.16\cores\esp32/WString.h:26,
from C:\Users\OEM\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.16\cores\esp32/Arduino.h:188,
from C:\Users\OEM\Documents\Arduino\libraries\Nokia_5110_LCD_library\src\Nokia_LCD.h:13,
from C:\Users\OEM\Documents\Arduino\libraries\Nokia_5110_LCD_library\src\Nokia_LCD.cpp:16:
C:\Users\OEM\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.16\cores\esp32/pgmspace.h:58: warning: "pgm_read_byte_near" redefined
#define pgm_read_byte_near(addr) pgm_read_byte(addr)

C:\Users\OEM\Documents\Arduino\libraries\Nokia_5110_LCD_library\src\Nokia_LCD.cpp:9: note: this is the location of the previous definition
#define pgm_read_byte_near *

[platisd]

I am using esp32/2.0.18 (Arduino Nano ESP32) and can compile this example sketch.

Are you able to do the same?

[platisd]

I imagine how a potential fix would be, but aside of currently not being able to reproduce it, the fact you are getting such an error is very strange in the first place. Likely related to how the Arduino IDE builds stuff.

To try the fix out, you may go to C:\Users\OEM\Documents\Arduino\libraries\Nokia_5110_LCD_library\src\Nokia_LCD.cpp and on the first line add #include <Arduino.h>

[Ralph4711]

Ok thank you
I add in the first line of Nokia_LCD.cpp the #include <Arduino.h>
And what i can say!?
The error is gone.
Thank you fore your Help platisd

[platisd]

This isn't a proper fix though without understanding it first. 😅
Where you able to compile the example sketch without the "fix"?

[Ralph4711]

Here is my Arduino Programm what i use:
https://drive.google.com/file/d/17C1SMtqGRQTCHAS5AwafLN-nt-RNw7k8/view?usp=sharing
Please try it, it is an System for an 3D Scanner for Photogrammetrie.
I use an ESP32 Dev Kit for this with Board Arduino ESP32 Boards 2.0.18
and Espressive ESP32 2.0.16
I build a new Version with other better Hardware of use older System Software.
I try to fix all errors so that in the future other people can use it.
I will Upload later to Thinkiverse for al.
Please Try my Software to compile it, for reproduce the error please