From a5023c7519925301e3757ae03d1a7f43e4df7216 Mon Sep 17 00:00:00 2001
From: Terry Moore <tmm@mcci.com>
Date: Mon, 18 Feb 2019 04:56:36 -0500
Subject: [PATCH] Fix #81: add additional paramter for port nubmer

---
 src/Arduino_LoRaWAN.h  | 3 ++-
 src/lib/SendBuffer.cpp | 5 +++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/Arduino_LoRaWAN.h b/src/Arduino_LoRaWAN.h
index 67651a2..c7fbdcb 100644
--- a/src/Arduino_LoRaWAN.h
+++ b/src/Arduino_LoRaWAN.h
@@ -395,7 +395,8 @@ class Arduino_LoRaWAN
 		size_t nBuffer,
 		SendBufferCbFn *pDoneFn = nullptr,
 		void *pCtx = nullptr,
-		bool fConfirmed = false
+		bool fConfirmed = false,
+		uint8_t port = 1
 		);
 
 	typedef void ReceivePortBufferCbFn(
diff --git a/src/lib/SendBuffer.cpp b/src/lib/SendBuffer.cpp
index 65d7c3f..5031943 100644
--- a/src/lib/SendBuffer.cpp
+++ b/src/lib/SendBuffer.cpp
@@ -74,7 +74,8 @@ bool Arduino_LoRaWAN::SendBuffer(
         size_t nBuffer,
         SendBufferCbFn *pDoneFn,
         void *pDoneCtx,
-	bool fConfirmed
+	bool fConfirmed,
+	uint8_t port
         )
         {
         if (this->m_fTxPending || LMIC.opmode & OP_TXRXPEND)
@@ -85,7 +86,7 @@ bool Arduino_LoRaWAN::SendBuffer(
                 }
 
         const int iResult = LMIC_setTxData2(
-                                /* port: */ 1,
+                                /* port: */ port != 0 ? port : 1,
                                 const_cast<xref2u1_t>(pBuffer),
                                 nBuffer,
                                 /* confirmed? */ fConfirmed