<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script> <script src="//code.jquery.com/jquery-1.11.1.min.js"></script> <!------ Include the above in your HEAD tag ----------> <div class="container"> <div class="row"> <div class="col-md-4"> <input class="form-control input-md" type="text" id="inputData" name="inputData" value="123"> </div> </div> <div class="row"> <div class="col-md-4"> <a href="#" id="convert" class="btn btn-sm btn-info"><span class="glyphicon glyphicon-refresh"></span> Convert</a> </div> </div> <div class="row"> <div class="col-md-4"> <textarea class="form-control" id="result" name="textarea" rows="10"></textarea> </div> </div> </div>

/* ______ _ _______ _______ | ____| | / ____\ \ / / ____| | |__ | | | (___ \ \_/ / (___ | __| | | \___ \ \ / \___ \ | |____| |____ ____) | | | ____) | |______|______|_____/ |_| |_____/ ELSYS simple payload decoder. Use it as it is or remove the bugs :) www.elsys.se peter@elsys.se */ const TYPE_TEMP =0x01; //temp 2 bytes -3276.8°C -->3276.7°C const TYPE_RH =0x02; //Humidity 1 byte 0-100% const TYPE_ACC =0x03; //acceleration 3 bytes X,Y,Z -128 --> 127 +/-63=1G const TYPE_LIGHT =0x04; //Light 2 bytes 0-->65535 Lux const TYPE_MOTION =0x05; //No of motion 1 byte 0-255 const TYPE_CO2 =0x06; //Co2 2 bytes 0-65535 ppm const TYPE_VDD =0x07; //VDD 2byte 0-65535mV const TYPE_ANALOG1 =0x08; //VDD 2byte 0-65535mV const TYPE_GPS =0x09; //3bytes lat 3bytes long binary const TYPE_PULSE1 =0x0A; //2bytes relative pulse count function bin16dec(bin) { var num=bin&0xFFFF; if (0x8000 & num) num = - (0x010000 - num); return num; } function bin8dec(bin) { var num=bin&0xFF; if (0x80 & num) num = - (0x0100 - num); return num; } function hexToBytes(hex) { for (var bytes = [], c = 0; c < hex.length; c += 2) bytes.push(parseInt(hex.substr(c, 2), 16)); return bytes; } function DecodeElsysPayload(data){ var obj = new Object(); for(i=0;i<data.length;i++){ console.log(data[i]); switch(data[i]){ case TYPE_TEMP: //Temperature var temp=(data[i+1]<<8)|(data[i+2]); temp=bin16dec(temp); obj.temperature=temp; i+=2; break case TYPE_RH: //Humidity var rh=(data[i+1]); obj.humidity=rh; i+=1; break case TYPE_ACC: //Acceleration obj.x=bin8dec(data[i+1]); obj.y=bin8dec(data[i+2]); obj.z=bin8dec(data[i+3]); i+=3; break case TYPE_LIGHT: //Light var light=(data[i+1]<<8)|(data[i+2]); obj.light=light; i+=2; break case TYPE_MOTION: //Motion sensor(PIR) var motion=(data[i+1]); obj.motion=motion; i+=1; break case TYPE_CO2: //CO2 var co2=(data[i+1]<<8)|(data[i+2]); obj.co2=co2; i+=2; break case TYPE_VDD: //Battery level var vdd=(data[i+1]<<8)|(data[i+2]); obj.vdd=vdd; i+=2; break case TYPE_ANALOG1: //Analog input 1 var analog1=(data[i+1]<<8)|(data[i+2]); obj.analog1=analog1; i+=2; break case TYPE_GPS: //gps obj.lat=(data[i+1]<<16)|(data[i+2]<<8)|(data[i+3]); obj.long=(data[i+4]<<16)|(data[i+5]<<8)|(data[i+6]); i+=6; break case TYPE_PULSE1: //Pulse input 1 var pulse1=(data[i+1]<<8)|(data[i+2]); obj.pulse1=pulse1; i+=2; break } } return obj; } $(function() { $("#convert").click(function() { console.log("click"); var res=DecodeElsysPayload(hexToBytes($('#inputData').val())); var json=JSON.stringify(res,null,4); $('#result').html(json); }); });