Add access to seqnumber

Author: ngraziano

library.json

@@ -1,6 +1,6 @@
 {
   "name": "LMICPP-Arduino",
-  "version": "2.5.1",
+  "version": "2.6.0",
   "keywords": "Lora",
   "description": "Modified Arduino port of the LMIC (LoraWAN-in-C, formerly LoraMAC-in-C) framework provided by IBM. Changed to C++ format.",
   "frameworks": ["arduino"],

library.properties

@@ -1,5 +1,5 @@
 name=LMICPP-Arduino
-version=2.5.1
+version=2.6.0
 author=IBM
 maintainer=Nicolas Graziano <nicolas.graziano@gmail.com>
 sentence=Modified Arduino port of the LMIC (LoraWAN-in-C, formerly LoraMAC-in-C) framework provided by IBM. Changed to C++ format.

src/lmic/lmic.h

@@ -314,6 +314,7 @@ class Lmic {
   void keep_sticky_mac_response(const uint8_t *const source, uint8_t sourceLen);
 
 public:
+  uint32_t getSeqnoUp() const { return seqnoUp; }
   void setBatteryLevel(uint8_t level);
   // set default/start DR/txpow
   void setDrTx(uint8_t dr) { channelParams.setDrTx(dr); };