From ba9c28e038fb3d2cf6a07f928a08e644a7caa5a1 Mon Sep 17 00:00:00 2001
From: vrees <viktor.rees@gmx.de>
Date: Fri, 29 May 2020 11:26:13 +0200
Subject: [PATCH] add shutdown_method to ttn in order reduce power consumption
 while in deep sleep

---
 include/TheThingsNetwork.h |  6 ++++++
 src/TheThingsNetwork.cpp   | 12 ++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/include/TheThingsNetwork.h b/include/TheThingsNetwork.h
index f579244..7115604 100644
--- a/include/TheThingsNetwork.h
+++ b/include/TheThingsNetwork.h
@@ -72,6 +72,12 @@ public:
      */
     void reset();
 
+    /**
+     * @brief Shutdown the LoRaWAN radio and reduce power consumption
+     *
+     */
+    void shutdown();
+
     /**
      * @brief Configures the pins used to communicate with the LoRaWAN radio chip.
      * 
diff --git a/src/TheThingsNetwork.cpp b/src/TheThingsNetwork.cpp
index 070bd3d..ff5d9b6 100644
--- a/src/TheThingsNetwork.cpp
+++ b/src/TheThingsNetwork.cpp
@@ -118,6 +118,18 @@ void TheThingsNetwork::reset()
     ttn_hal.leaveCriticalSection();
 }
 
+void TheThingsNetwork::shutdown()
+{
+    ttn_hal.enterCriticalSection();
+    LMIC_shutdown();
+    waitingReason = eWaitingNone;
+    if (lmicEventQueue != nullptr)
+    {
+        xQueueReset(lmicEventQueue);
+    }
+    ttn_hal.leaveCriticalSection();
+}
+
 bool TheThingsNetwork::provision(const char *devEui, const char *appEui, const char *appKey)
 {
     if (!provisioning.decodeKeys(devEui, appEui, appKey))