There was an issue, where I think I screwed up earlier and defined the pins as all GPIO_ACTIVE_LOW in the digital-pin-gpios.

With this the digitalWrites were inverted.

I was having an issue with my ILI9341 library where the CS and DC pins states were inverted.

Created simple example sketch:

void setup() {  // put your setup code here, to run once:  pinMode(2, OUTPUT);  pinMode(3, OUTPUT);  pinMode(4, OUTPUT);}void loop() {  // put your main code here, to run repeatedly:  digitalWrite(2, HIGH);  digitalWrite(3, HIGH);  digitalWrite(4, HIGH);  delay(50);  digitalWrite(2, LOW);  digitalWrite(3, LOW);  digitalWrite(4, LOW);  delay(250);}

Before these changes:

With these changes:

And simple ILI9341 driver I have for Zephyr is working again... (Was working on GIGA)