Example: A simple switch and LED

• the switch has the 'name': 'sw1'
• and connected to 'port' 'D11' (or any other port you chose)
• use the current value of 'sw1' in a rule, for example

set a LED on when sw1 is on:

if ( sw1 ) {
    led1 = 1 ;
} else {
    led1 = 0 ;
}