emnik
commented
9 years ago the code I use is:
var SerialPort = require('serialport').SerialPort;
var xbee_api = require('xbee-api');
var util = require('util');
var sqlite3 = require('sqlite3').verbose();
var db = new sqlite3.Database('./sensor-data.sqlite');
function readRemoteTemp(callback)
{
var xbeeAPI = new xbee_api.XBeeAPI({
api_mode: 1, //ATAP1 -without escape characters
module: "802.15.4"
});
var serialport = new SerialPort("/dev/ttyAMA0", {
baudrate: 9600,
parser: xbeeAPI.rawParser()
});
xbeeAPI.on("frame_object", function(frame) {
console.log('hello from frame_object');
if (frame.remote16 === '0002') // this is the address of the remote Xbee
{
var buf = frame.data;
var value = buf.readFloatLE(0);
//console.log(value);
var data = {
temperature_record:[{
unix_time: Date.now(),
celsius: Math.round(value * 10) / 10 //round temperature to 1 decimal digit
}]};
// console.log(data);
if (data.temperature_record[0].celsius!=""){
callback(data);
}
}
})
}
// Write a single temperature record in JSON format to database table.
function insertRemoteTemp(data){
//var db = new sqlite3.Database('./sensor-data.sqlite');
// data is a javascript object
var statement = db.prepare("INSERT INTO sensor_data (timestamp, sensor_id, value) VALUES (?, 2, ?)");
// Insert values into prepared statement
statement.run(data.temperature_record[0].unix_time, data.temperature_record[0].celsius, function(error){
if (error){
console.log("SQL error from xbee module: ");
console.log(error);
}
});
// Execute the statement
statement.finalize();
//db.close();
}
function logRemoteTemp(){
readRemoteTemp(insertRemoteTemp);
}
module.exports.logRemoteTemp = logRemoteTemp;
jankolkmeier
Sorry for the bad title but... I am developing a smart thermostat using node.js on raspberry pi with Xbee Series 1. The following is happening only with xbee-api in node.js (in python code I don't have such a problem) so it must be a bug. The first time after booting RPi, on every Xbee frame I receive when I added console.log(util.inspect(S)); in xbee-api.js (~line 187) I get: MULTIPLE frames (every time much more than the previous) with wrong offset, length etc: To be more specific: I receive data from a remote Xbee every 30sec:
On the first data I get 16 TIMES:
On the second data I get 11 TIMES:
with offset values ranging from 1 to 14 every time...
On the third data I get 13 TIMES:
with offset values ranging from 5 to 27 every time...
... this keeps growing and when the offset becomes = 128 it crashes:
SEE HERE: http://pastebin.com/LSeRbJQm
Now, if I restart the app everything works just fine: Every 30 seconds I get a frame such: