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@ferryzhou
Created May 15, 2016 17:05
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connect to mbot through bluetooth from nodejs
// Based on tutorial here:
// https://itp.nyu.edu/physcomp/labs/labs-serial-communication/lab-serial-communication-with-node-js/
// Examples:
// node test.js /dev/tty.Makeblock-ELETSPP
var serialport = require('serialport');
var SerialPort = serialport.SerialPort;
var portName = process.argv[2];
// turn led green
// ff 55 09 00 02 08 07 02 00 ff 00 00
var ledGreenCmd = new Buffer([0xff, 0x55, 0x09, 0x00, 0x02, 0x08, 0x07, 0x02, 0x00, 0xff, 0x00, 0x00]);
var ledOffCmd = new Buffer([0xff, 0x55, 0x09, 0x00, 0x02, 0x08, 0x07, 0x02, 0x00, 0x00, 0x00, 0x00]);
var myPort = new SerialPort(portName, {
baudRate: 115200, // baud rate for makeblock.
parser: serialport.parsers.readline("\n")
});
myPort.on('open', showPortOpen);
myPort.on('data', showSerialData);
myPort.on('close', showPortClose);
myPort.on('error', showError);
function showPortOpen() {
console.log('port open. Data rate: ' + myPort.options.baudRate);
changeLedAndClose();
}
function showSerialData(data) {
console.log(new Buffer(data));
}
function showPortClose() {
console.log('port closed.');
}
function showError(error) {
console.log('Serial port error: ' + error);
}
function changeLedAndClose() {
myPort.write(ledGreenCmd);
setTimeout(function() {
console.log('turn off light');
myPort.write(ledOffCmd);
console.log('close port ....')
myPort.close();
}, 3000);
}
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