17 lines
389 B
JavaScript
17 lines
389 B
JavaScript
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const { Gpio } = require( 'onoff' );
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// set BCM 4 pin as 'output'
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const ledOut = new Gpio( '4', 'out' );
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// set BCM 17 pin as 'input'
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const switchIn = new Gpio( '17', 'in', 'both' );
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// listen for pin voltage change
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switchIn.watch( ( err, value ) => {
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if( err ) {
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console.log( 'Error', err );
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}
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// write the input value (0 or 1) 'ledOut' pin
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ledOut.writeSync( value );
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} );
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