From 1f44bf5790f26c4f4aebb1ddca98bc4924610a7c Mon Sep 17 00:00:00 2001
From: Max Prokhorov <prokhorov.max@outlook.com>
Date: Fri, 20 Sep 2019 15:24:45 +0300
Subject: [PATCH] WiFi: Configure TX power (#1915)

---
 code/espurna/config/general.h | 9 +++++++++
 code/espurna/wifi.ino         | 3 +++
 2 files changed, 12 insertions(+)

diff --git a/code/espurna/config/general.h b/code/espurna/config/general.h
index 592ecc32..ef8742f8 100644
--- a/code/espurna/config/general.h
+++ b/code/espurna/config/general.h
@@ -578,6 +578,15 @@
 #define WIFI_GRATUITOUS_ARP_INTERVAL_MAX         30000
 #endif
 
+// ref: https://github.com/esp8266/Arduino/issues/6471
+// ref: https://github.com/esp8266/Arduino/issues/6366
+//
+// Issue #6366 turned out to be high tx power causing weird behavior. Lowering tx power achieved stability.
+#ifndef WIFI_OUTPUT_POWER_DBM
+#define WIFI_OUTPUT_POWER_DBM                    20.0
+#endif
+
+
 // -----------------------------------------------------------------------------
 // WEB
 // -----------------------------------------------------------------------------
diff --git a/code/espurna/wifi.ino b/code/espurna/wifi.ino
index 355ce554..993e7bbf 100644
--- a/code/espurna/wifi.ino
+++ b/code/espurna/wifi.ino
@@ -104,6 +104,9 @@ void _wifiConfigure() {
         )).toInt();
     #endif
 
+    const auto tx_power = getSetting("wifiTxPwr", WIFI_OUTPUT_POWER_DBM).toFloat();
+    WiFi.setOutputPower(tx_power);
+
 }
 
 void _wifiScan(uint32_t client_id = 0) {