Class constructor issues (IO functions)

[putzlicht]

Hello,

i'm using ONE firmware for a bunch of different boards. Some have a display connected, some not.
Because of initialising the display pins in the class constructor i have some unwanted behavior on boards with
no displays. Some boards have pwm dimmers connected where others have a display for example.
After a reset they are flashing at 100 percent in this case.
It should be possible in c++ to create a nullptr class instance and doing the initialization later in the setup function for example.
But i had no success trying this.
So my workaround for this problem is to remove all IO functions from the constructor and put them in the init() function
right after if (_booted).
Is there a more elegant way to solve this?

Best
Martin