diff --git a/src/TTN/packed_decoder.js b/src/TTN/packed_decoder.js
index af28fab4..8c469b9b 100644
--- a/src/TTN/packed_decoder.js
+++ b/src/TTN/packed_decoder.js
@@ -18,12 +18,12 @@ function Decoder(bytes, port) {
 
     if (port === 2) {
         // device status data
-        if (bytes.length == 10) {
-            return decode(bytes, [uint16, unixtime, temperature], ['voltage', 'uptime', 'cputemp']);
+        if (bytes.length == 12) {
+            return decode(bytes, [uint16, uptime, temperature], ['voltage', 'uptime', 'cputemp']);
         }
         // device config data
         if (bytes.length == 8) {
-            return decode(bytes, [uint8, uint16, uint8, uint8, uint8, bitmap], ['lorasf', 'rssilimit', 'sendcycle', 'wifichancycle', 'blescantime', 'rgblum', 'flags']);
+            return decode(bytes, [uint8, uint16, uint8, uint8, uint8, uint8, bitmap], ['lorasf', 'rssilimit', 'sendcycle', 'wifichancycle', 'blescantime', 'rgblum', 'flags']);
         }
     }
 
@@ -41,13 +41,13 @@ var bytesToInt = function (bytes) {
     return i;
 };
 
-var unixtime = function (bytes) {
-    if (bytes.length !== unixtime.BYTES) {
-        throw new Error('Unix time must have exactly 4 bytes');
+var uptime = function (bytes) {
+    if (bytes.length !== uptime.BYTES) {
+        throw new Error('uptime must have exactly 8 bytes');
     }
     return bytesToInt(bytes);
 };
-unixtime.BYTES = 4;
+uptime.BYTES = 4;
 
 var uint8 = function (bytes) {
     if (bytes.length !== uint8.BYTES) {
@@ -150,7 +150,7 @@ var decode = function (bytes, mask, names) {
 
 if (typeof module === 'object' && typeof module.exports !== 'undefined') {
     module.exports = {
-        unixtime: unixtime,
+        uptime: uptime,
         uint8: uint8,
         uint16: uint16,
         temperature: temperature,
diff --git a/src/gpsread.cpp b/src/gpsread.cpp
index d0cab92c..11a8cf92 100644
--- a/src/gpsread.cpp
+++ b/src/gpsread.cpp
@@ -8,8 +8,8 @@ static const char TAG[] = "main";
 
 // read GPS data and cast to global struct
 void gps_read() {
-  gps_status.latitude = (uint32_t)(gps.location.lat() * 1000000);
-  gps_status.longitude = (uint32_t)(gps.location.lng() * 1000000);
+  gps_status.latitude = (uint32_t)(gps.location.lat() * 1e6);
+  gps_status.longitude = (uint32_t)(gps.location.lng() * 1e6);
   gps_status.satellites = (uint8_t)gps.satellites.value();
   gps_status.hdop = (uint16_t)gps.hdop.value();
   gps_status.altitude = (uint16_t)gps.altitude.meters();
diff --git a/src/payload.cpp b/src/payload.cpp
index b3b73e18..dce09224 100644
--- a/src/payload.cpp
+++ b/src/payload.cpp
@@ -125,39 +125,33 @@ void TTNpacked::addConfig(configData_t value) {
 
 void TTNpacked::addStatus(uint16_t voltage, uint64_t uptime, float cputemp) {
   writeUint16(voltage);
-  writeUnixtime(uptime);
+  writeUptime(uptime);
   writeTemperature(cputemp);
 }
 
-void TTNpacked::_intToBytes(uint8_t pos, int32_t i, uint8_t byteSize) {
+void TTNpacked::intToBytes(uint8_t pos, int32_t i, uint8_t byteSize) {
   for (uint8_t x = 0; x < byteSize; x++) {
     buffer[x + pos] = (byte)(i >> (x * 8));
   }
   cursor += byteSize;
 }
 
-void TTNpacked::writeUnixtime(uint32_t unixtime) {
-  _intToBytes(cursor, unixtime, 4);
+void TTNpacked::writeUptime(uint64_t uptime) {
+  intToBytes(cursor, uptime, 8);
 }
 
 void TTNpacked::writeLatLng(double latitude, double longitude) {
-  int32_t lat = latitude * 1e6;
-  int32_t lng = longitude * 1e6;
-  _intToBytes(cursor, lat, 4);
-  _intToBytes(cursor, lng, 4);
+  intToBytes(cursor, latitude, 4);
+  intToBytes(cursor, longitude, 4);
 }
 
-void TTNpacked::writeUint16(uint16_t i) {
-  _intToBytes(cursor, i, 2);
-}
+void TTNpacked::writeUint16(uint16_t i) { intToBytes(cursor, i, 2); }
 
-void TTNpacked::writeUint8(uint8_t i) {
-  _intToBytes(cursor, i, 1);
-}
+void TTNpacked::writeUint8(uint8_t i) { intToBytes(cursor, i, 1); }
 
 void TTNpacked::writeHumidity(float humidity) {
   int16_t h = (int16_t)(humidity * 100);
-  _intToBytes(cursor, h, 2);
+  intToBytes(cursor, h, 2);
 }
 
 /**
diff --git a/src/payload.h b/src/payload.h
index a828b818..53cda054 100644
--- a/src/payload.h
+++ b/src/payload.h
@@ -59,8 +59,8 @@ public:
 private:
   uint8_t *buffer;
   uint8_t cursor;
-  void _intToBytes(uint8_t pos, int32_t i, uint8_t byteSize);
-  void writeUnixtime(uint32_t unixtime);
+  void intToBytes(uint8_t pos, int32_t i, uint8_t byteSize);
+  void writeUptime(uint64_t unixtime);
   void writeLatLng(double latitude, double longitude);
   void writeUint16(uint16_t i);
   void writeUint8(uint8_t i);