mirror of
https://github.com/0xFEEDC0DE64/arduino-esp32.git
synced 2025-11-03 23:51:39 +01:00
c8140f8288
example:
```cpp
//done once on WiFi init
configTime(-7200, 3600, "pool.ntp.org");
//get local time
struct tm timeinfo;
if(!getLocalTime(&timeinfo)){
Serial.println("Failed to obtain time");
return;
}
//print time
Serial.println(&timeinfo);
//print time with different format
Serial.println(&timeinfo, "%A, %B %d %Y %H:%M:%S");
```
fixes: https://github.com/espressif/arduino-esp32/issues/29
83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "esp32-hal.h"
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#include "apps/sntp/sntp.h"
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static void setTimeZone(long offset, int daylight)
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{
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char cst[16] = {0};
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char cdt[16] = "CDT";
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char tz[32] = {0};
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if(offset % 3600){
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sprintf(cst, "CST%ld:%02u:%02u", offset / 3600, abs((offset % 3600) / 60), abs(offset % 60));
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} else {
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sprintf(cst, "CST%ld", offset / 3600);
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}
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if(daylight != 3600){
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long tz_dst = offset - daylight;
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if(tz_dst % 3600){
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sprintf(cdt, "CDT%ld:%02u:%02u", tz_dst / 3600, abs((tz_dst % 3600) / 60), abs(tz_dst % 60));
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} else {
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sprintf(cdt, "CDT%ld", tz_dst / 3600);
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}
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}
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sprintf(tz, "%s%s", cst, cdt);
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setenv("TZ", tz, 1);
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tzset();
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}
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/*
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* configTime
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* Source: https://github.com/esp8266/Arduino/blob/master/cores/esp8266/time.c
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* */
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void configTime(long gmtOffset_sec, int daylightOffset_sec, const char* server1, const char* server2, const char* server3)
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{
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if(sntp_enabled()){
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sntp_stop();
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}
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sntp_setoperatingmode(SNTP_OPMODE_POLL);
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sntp_setservername(0, (char*)server1);
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sntp_setservername(1, (char*)server2);
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sntp_setservername(2, (char*)server3);
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sntp_init();
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setTimeZone(gmtOffset_sec, daylightOffset_sec);
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}
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bool getLocalTime(struct tm * info, uint32_t ms)
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{
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uint32_t count = ms / 10;
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time_t now;
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time(&now);
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localtime_r(&now, info);
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if(info->tm_year > (2016 - 1900)){
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return true;
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}
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while(count--) {
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delay(10);
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time(&now);
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localtime_r(&now, info);
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if(info->tm_year > (2016 - 1900)){
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return true;
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}
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}
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return false;
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}
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