Help with Adafruit SH1106 Library and OLED screen

Using Arduino Programming Questions
1

Hello I have this library working GitHub - wonho-maker/Adafruit_SH1106: Adafruit graphic library for SH1106 dirver lcds. but it uses up quite a bit of memory. Is there any way I can trim down the code to remove anything thats not required.
I only need this library to write text, nothing fancy.

Sketch uses 20,922 bytes (64%) of program storage space. Maximum is 32,256 bytes.
Global variables use 1,585 bytes (77%) of dynamic memory, leaving 463 bytes for local variables. Maximum is 2,048 bytes.
Low memory available, stability problems may occur.

Thanks

2

It is said that the IDE (or compiler) only compiles or links what is needed. A simple test seems to prove that but I'm not 100% sure if I did it correctly. I don't have the GFX library installed so can't test your scenario.

I created a sketch and added two files (simulating a library); this 'library' contained two functions and in the sketch I only used one of them. Removing the non-used function from the 'library' did not make a difference in the memory (flash and ram) usage.

You can easily try it yourself by removing a function (that you don't need) from the library's cpp file and check the result.

3

Is there any way I can trim down the code to remove anything thats not required.

The library needs a buffer to hold one bit per pixel. If you have a 128 x 64 pixel display, it needs 1024 bytes of memory to hold that data. There is NO way that you can reduce that.

4

Thanks for the tips, I've managed to trim it down enough to use it in my project.

Cheers