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Codec/Dragino-LSN50v2-S31.js

@@ -0,0 +1,156 @@
+// Decode uplink function.
+//
+// Input is an object with the following fields:
+// - bytes = Byte array containing the uplink payload, e.g. [255, 230, 255, 0]
+// - fPort = Uplink fPort.
+// - variables = Object containing the configured device variables.
+//
+// Output must be an object with the following fields:
+// - data = Object representing the decoded payload.
+function decodeUplink(input) {
+    return {
+        data: Decoder(input.bytes, input.fPort)
+    };
+}
+
+function datalog(i,bytes){
+  var aa= parseFloat(((bytes[3+i]<<24>>16 | bytes[4+i])/10).toFixed(1));
+  var bb= parseFloat(((bytes[5+i]<<8 | bytes[6+i])/10).toFixed(1));
+  var cc= getMyDate((bytes[7+i]<<24 | bytes[8+i]<<16 | bytes[9+i]<<8 | bytes[10+i]).toString(10));
+  var string='['+aa+','+bb+','+cc+']'+',';  
+  
+  return string;
+}
+
+function getzf(c_num){ 
+  if(parseInt(c_num) < 10)
+    c_num = '0' + c_num; 
+
+  return c_num; 
+}
+
+function getMyDate(str){ 
+  var c_Date;
+  if(str > 9999999999)
+    c_Date = new Date(parseInt(str));
+  else 
+    c_Date = new Date(parseInt(str) * 1000);
+  
+  var c_Year = c_Date.getFullYear(), 
+  c_Month = c_Date.getMonth()+1, 
+  c_Day = c_Date.getDate(),
+  c_Hour = c_Date.getHours(), 
+  c_Min = c_Date.getMinutes(), 
+  c_Sen = c_Date.getSeconds();
+  var c_Time = c_Year +'-'+ getzf(c_Month) +'-'+ getzf(c_Day) +' '+ getzf(c_Hour) +':'+ getzf(c_Min) +':'+getzf(c_Sen); 
+  
+  return c_Time;
+}
+
+function Decoder(bytes, port) {
+  //LSN50_v2_S31_S31B Decode   
+  if(port==0x02)
+  {
+    var decode = {};
+    var mode=(bytes[6] & 0x7C)>>2;
+    if(mode==0)
+    {
+      decode.BatV=(bytes[0]<<8 | bytes[1])/1000;
+      decode.EXTI_Trigger=(bytes[6] & 0x01)? "TRUE":"FALSE";
+      decode.Door_status=(bytes[6] & 0x80)? "CLOSE":"OPEN";     
+      decode.TempC_SHT31= parseFloat(((bytes[7]<<24>>16 | bytes[8])/10).toFixed(1));
+      decode.Hum_SHT31=parseFloat(((bytes[9]<<8 | bytes[10])/10).toFixed(1));
+      decode.Data_time= getMyDate((bytes[2]<<24 | bytes[3]<<16 | bytes[4]<<8 | bytes[5]).toString(10));         
+    }
+    else if(mode==31)
+    {
+      decode.SHTEMP_MIN= bytes[7]<<24>>24;
+      decode.SHTEMP_MAX= bytes[8]<<24>>24;
+      decode.SHHUM_MIN= bytes[9];
+      decode.SHHUM_MAX= bytes[10];         
+    }
+    
+    if(bytes.length==11)
+      return decode;
+  }
+  else if(port==3)  
+  {
+    for(var i=0;i<bytes.length;i=i+11)
+    {
+      var data= datalog(i,bytes);
+      if(i=='0')
+        data_sum=data;
+      else
+        data_sum+=data;
+    }
+    return{
+    DATALOG:data_sum
+    };    
+  }
+  else if(port==5)
+  {
+  	var freq_band;
+  	var sub_band;
+  	
+    if(bytes[0]==0x01)
+        freq_band="EU868";
+  	else if(bytes[0]==0x02)
+        freq_band="US915";
+  	else if(bytes[0]==0x03)
+        freq_band="IN865";
+  	else if(bytes[0]==0x04)
+        freq_band="AU915";
+  	else if(bytes[0]==0x05)
+        freq_band="KZ865";
+  	else if(bytes[0]==0x06)
+        freq_band="RU864";
+  	else if(bytes[0]==0x07)
+        freq_band="AS923";
+  	else if(bytes[0]==0x08)
+        freq_band="AS923_1";
+  	else if(bytes[0]==0x09)
+        freq_band="AS923_2";
+  	else if(bytes[0]==0x0A)
+        freq_band="AS923_3";
+  	else if(bytes[0]==0x0F)
+        freq_band="AS923_4";
+  	else if(bytes[0]==0x0B)
+        freq_band="CN470";
+  	else if(bytes[0]==0x0C)
+        freq_band="EU433";
+  	else if(bytes[0]==0x0D)
+        freq_band="KR920";
+  	else if(bytes[0]==0x0E)
+        freq_band="MA869";
+  	
+    if(bytes[1]==0xff)
+      sub_band="NULL";
+	  else
+      sub_band=bytes[1];
+
+	  var firm_ver= (bytes[2]&0x0f)+'.'+(bytes[3]>>4&0x0f)+'.'+(bytes[3]&0x0f);
+	  
+	  var tdc_time= bytes[4]<<16 | bytes[5]<<8 | bytes[6];
+	  
+  	return {
+      FIRMWARE_VERSION:firm_ver,
+      FREQUENCY_BAND:freq_band,
+      SUB_BAND:sub_band,
+      TDC_sec:tdc_time,
+  	}
+  }
+}
+
+// Encode downlink function.
+//
+// Input is an object with the following fields:
+// - data = Object representing the payload that must be encoded.
+// - variables = Object containing the configured device variables.
+//
+// Output must be an object with the following fields:
+// - bytes = Byte array containing the downlink payload.
+function encodeDownlink(input) {
+  return {
+    bytes: [225, 230, 255, 0]
+  };
+}