84 lines
2.2 KiB
JavaScript
84 lines
2.2 KiB
JavaScript
// Define port and reader globally to be used in other functions
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let port;
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let reader;
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let decoder = new TextDecoder("utf-8");
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let counterElement = document.getElementById("counter");
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let readibleoutput = 0;
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let tempArray = [];
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let humid = 0;
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let licht = 0;
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// Request a port and open a connection.
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async function connect() {
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//vraag aan de browser om een serial port te selecteren
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port = await navigator.serial.requestPort();
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await port.open({ baudRate: 9600 });
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reader = port.readable.getReader();
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console.log("Port is open!");
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readLoop()
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}
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// Read data
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async function readLoop() {
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let buffer = [];
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// loop until reader.cancel() is called
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while (true) {
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// Wait for data
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const { value, done } = await reader.read();
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for (let iByte = 0; iByte < value.length; iByte++) {
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let singleByte = value[iByte];
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if (singleByte != 10) {
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buffer.push(singleByte);
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}
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else {
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let sensorString = decoder.decode(new Uint8Array(buffer));
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let SensorValues;
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try {
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SensorValues = JSON.parse(sensorString);
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} catch (e) {
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console.log("json niet geparserd");
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}
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if (SensorValues) {
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console.log(SensorValues)
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tempArray.push(SensorValues[0])
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}
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buffer = [];
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// var array = sensorString.split(','),
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// temp = array[0], humid = array[1], licht = array[2];
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// console.log(temp);
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// console.log(humid);
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// console.log(licht);
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}
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// Show the received data in the console
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// Exit the loop when done
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if (done) {
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console.log('[readLoop] DONE', done);
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reader.releaseLock();
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break;
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}
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}
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}
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}
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// Close the port
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async function disconnect() {
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await reader.cancel();
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await port.close();
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console.log("Port is closed!");
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} |