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led.js
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led.js
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module.exports = function (RED) {
function LEDNode(config) {
RED.nodes.createNode(this, config);
this.plate = RED.nodes.getNode(config.config_plate).plate;
var node = this;
node.on('input', function (msg, send, done) {
let commands = ['on', 'off', 'toggle'];
let colors = ['red', 'green', 'yellow', 'blue', 'magenta',
'cyan', 'white'];
let inputValid = (typeof msg.payload === 'string' &&
commands.includes(msg.payload) ||
colors.includes(msg.payload));
if (!node.plate.plate_status && inputValid) {
const obj = { cmd: '', args: {} };
let color = null;
if (colors.includes(msg.payload)) {
color = msg.payload;
}
switch (msg.payload) {
case 'on': {
obj.cmd = 'setLED';
break;
}
case 'off': {
obj.cmd = 'clrLED';
break;
}
case 'toggle': {
obj.cmd = 'toggleLED';
break;
}
default: {
if (color) {
obj.cmd = 'setLED';
obj.args.color = color;
}
}
}
if (obj.cmd != '') {
node.plate.send(obj, (reply) => {
node.state = reply.state;
node.status({ text: node.state });
msg.payload = node.state;
send(msg);
});
}
} else if (node.plate.plate_status == 1) {
node.status({fill: "red", shape: "ring", text: "invalid plate"});
node.log("invalid plate");
node.plate.update_status();
} else if (node.plate.plate_status == 2) {
node.status({fill: "red", shape: "ring", text: "missing python dependencies"});
node.log("missing python dependencies");
} else if (node.plate.plate_status == 3) {
node.status({fill: "red", shape: "ring", text: "python process error"});
node.log("python process error");
} else if (!inputValid) {
node.status({fill: "red", shape: "ring", text: "invalid input"});
node.log("invalid input");
}
if (done) {
done();
}
});
this.on('close', function () {
// cleanup goes here
});
}
RED.nodes.registerType("ppLED", LEDNode);
}