Hi I'm a newbie to NodeJs. I encountered TypeError: serialport.parsers.readline is not a function error
from below code.
var webSocketUrl = "wss://api.artik.cloud/v1.1/websocket?ack=true";
var device_id = "########################"; // DEVICE ID
var device_token = "#####################"; // DEVICE TOKEN
// require websocket module to connect
// execute following two commands to your pi's terminal
// sudo apt-get update
// npm install websocket
var WebSocket = require('ws');
var isWebSocketReady = false;
var data="";
var ws = null;
// require serialport module to raspberry pi
// execute following command to terminal
// npm install serialport
var serialport = require("serialport");
var SerialPort = serialport.SerialPort;
var sp = new SerialPort("/dev/ttyACM0", { //for serial communication with
arduino
baudrate: 9600,
// we are using UNO so baudrate is 9600, you might need to change according
to your model
parser: serialport.parsers.readline("\n")
});
But after i run this i got a error like this
/home/pi/parking.js:21
parser: serialport.parsers.readline("\n")
^
TypeError: serialport.parsers.readline is not a function
at Object.<anonymous> (/home/pi/rainbow-parking.js:21:32)
at Module._compile (module.js:409:26)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
at Function.Module.runMain (module.js:441:10)
at startup (node.js:140:18)
at node.js:1043:3
Anyone can help me to solve this problem. I suspect the issue is with mismatch my nodejs and npm version.
okay. I found a solution for this problem. The problem was my npm version and serial port versions are not matching with each other. Easily avoid this problem updating those 2 versions same. Thank you everyone for the help