I'm trying to access the LED on the D4 port but without using the GrovePi libraries. (The GrovePi LED blink code sample works fine).
FYI - I am trying to follow an Azure IOT tutorial (which internally uses wiringPi) which is using the following line of code:
const int GREEN_LED_PIN = 5;
Any ideas please as to what I'm doing wrong - am a newbie and slightly lost at the moment.