Samples that you can follow to learn how to use GPIOs on the mangOH platform are available at https://github.com/mangOH/mangOH/tree/524d0f9feae2ab6bb92bab03c346b08c4439f38f/samples/tutorials/hardwareInterfaces
These sample apps will allow you to:
a. blink an LED on a timer: TimerLed
b. turn LED on and off using push button: TouchSensor
c. turn LED on and off using GPIO : Cf3GpioControl
Tutorials are coming soon and will be posted online. If you want to use them in the meantime, make sure mangOH system is installed on your target.