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// Decode decodes an array of bytes into an object.
function Decode(fPort, bytes) {
var decoded = {};
for (var i = 0; i < bytes.length; ) {
var channel_id = bytes[i++];
var channel_type = bytes[i++];
if (channel_id === 0x01 && channel_type === 0x75) {
decoded.battery = bytes[i];
i += 1;
} else if (channel_id === 0x03 && channel_type === 0x67) {
decoded.temperature = readInt16LE(bytes.slice(i, i + 2)) / 10;
i += 2;
} else if (channel_id === 0x04 && channel_type === 0x68) {
decoded.humidity = bytes[i] / 2;
i += 1;
} else if (channel_id === 0x05 && channel_type === 0x6a) {
decoded.activity = readUInt16LE(bytes.slice(i, i + 2));
i += 2;
} else if (channel_id === 0x06 && channel_type === 0x65) {
decoded.illumination = readUInt16LE(bytes.slice(i, i + 2));
decoded.infrared_and_visible = readUInt16LE(bytes.slice(i + 2, i + 4));
decoded.infrared = readUInt16LE(bytes.slice(i + 4, i + 6));
i += 6;
} else if (channel_id === 0x07 && channel_type === 0x7d) {
decoded.co2 = readUInt16LE(bytes.slice(i, i + 2));
i += 2;
} else if (channel_id === 0x08 && channel_type === 0x7d) {
decoded.tvoc = readUInt16LE(bytes.slice(i, i + 2));
i += 2;
} else if (channel_id === 0x09 && channel_type === 0x73) {
decoded.pressure = readUInt16LE(bytes.slice(i, i + 2)) / 10;
i += 2;
} else {
break;
}
}
return decoded;
}
function readUInt16LE(bytes) {
var value = (bytes[1] << 8) + bytes[0];
return value & 0xffff;
}
function readInt16LE(bytes) {
var ref = readUInt16LE(bytes);
return ref > 0x7fff ? ref - 0x10000 : ref;
}
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