If using an OLED screen you'll need to include the following at the *end* of one of the above commands to build support for the OLED into the firmware.
```
-DZMK_DISPLAY=yes
```
You'll also need to add the following to your keymap file.
```
&pro_micro_i2c {
status = "okay";
};
```
## Graphcs Library
If you'd like to use ```lvgl``` with an OLED please append *BOTH* the above OLED parameter and the below to one of the above commands.