From b02643e7fadc5c7d618613058f70835d9c16649a Mon Sep 17 00:00:00 2001
From: kugelkopf123 <45996965+kugelkopf123@users.noreply.github.com>
Date: Tue, 21 Apr 2020 02:09:54 +0200
Subject: [PATCH] Tz update (#7234)

* TZ update

Added the possibility to set the timezone without using NTP. This is helpful to have the timezone advantages when using an external RTC.

* Update time.cpp
---
 cores/esp8266/Arduino.h |  2 ++
 cores/esp8266/time.cpp  | 16 +++++++++++-----
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/cores/esp8266/Arduino.h b/cores/esp8266/Arduino.h
index a4e00ec73..edb6bdd5c 100644
--- a/cores/esp8266/Arduino.h
+++ b/cores/esp8266/Arduino.h
@@ -276,6 +276,8 @@ long secureRandom(long);
 long secureRandom(long, long);
 long map(long, long, long, long, long);
 
+void setTZ(const char* tz);
+
 void configTime(int timezone, int daylightOffset_sec, const char* server1,
     const char* server2 = nullptr, const char* server3 = nullptr);
 
diff --git a/cores/esp8266/time.cpp b/cores/esp8266/time.cpp
index 45481d91b..d6abbfc88 100644
--- a/cores/esp8266/time.cpp
+++ b/cores/esp8266/time.cpp
@@ -186,6 +186,14 @@ void configTime(int timezone_sec, int daylightOffset_sec, const char* server1, c
     /*** end of posix replacement ***/
 }
 
+void setTZ(const char* tz){
+	
+    char tzram[strlen_P(tz) + 1];
+    memcpy_P(tzram, tz, sizeof(tzram));
+    setenv("TZ", tzram, 1/*overwrite*/);
+    tzset();
+}
+
 void configTime(const char* tz, const char* server1, const char* server2, const char* server3)
 {
     sntp_stop();
@@ -193,10 +201,8 @@ void configTime(const char* tz, const char* server1, const char* server2, const
     setServer(0, server1);
     setServer(1, server2);
     setServer(2, server3);
-    char tzram[strlen_P(tz) + 1];
-    memcpy_P(tzram, tz, sizeof(tzram));
-    setenv("TZ", tzram, 1/*overwrite*/);
-    tzset();
-
+	setTZ(tz);
+	
     sntp_init();
 }
+