arduino-esp32/cores/esp32/esp32-hal-time.c
2018-11-28 00:35:43 +01:00

100 lines
2.7 KiB
C

// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "esp32-hal.h"
#include "lwip/apps/sntp.h"
static void setTimeZone(long offset, int daylight)
{
char cst[17] = {0};
char cdt[17] = "DST";
char tz[33] = {0};
if(offset % 3600){
sprintf(cst, "UTC%ld:%02u:%02u", offset / 3600, abs((offset % 3600) / 60), abs(offset % 60));
} else {
sprintf(cst, "UTC%ld", offset / 3600);
}
if(daylight != 3600){
long tz_dst = offset - daylight;
if(tz_dst % 3600){
sprintf(cdt, "DST%ld:%02u:%02u", tz_dst / 3600, abs((tz_dst % 3600) / 60), abs(tz_dst % 60));
} else {
sprintf(cdt, "DST%ld", tz_dst / 3600);
}
}
sprintf(tz, "%s%s", cst, cdt);
setenv("TZ", tz, 1);
tzset();
}
/*
* configTime
* Source: https://github.com/esp8266/Arduino/blob/master/cores/esp8266/time.c
* */
void configTime(long gmtOffset_sec, int daylightOffset_sec, const char* server1, const char* server2, const char* server3)
{
if(sntp_enabled()){
sntp_stop();
}
sntp_setoperatingmode(SNTP_OPMODE_POLL);
sntp_setservername(0, (char*)server1);
sntp_setservername(1, (char*)server2);
sntp_setservername(2, (char*)server3);
sntp_init();
setTimeZone(-gmtOffset_sec, daylightOffset_sec);
}
/*
* configTzTime
* sntp setup using TZ environment variable
* */
void configTzTime(const char* tz, const char* server1, const char* server2, const char* server3)
{
if(sntp_enabled()){
sntp_stop();
}
sntp_setoperatingmode(SNTP_OPMODE_POLL);
sntp_setservername(0, (char*)server1);
sntp_setservername(1, (char*)server2);
sntp_setservername(2, (char*)server3);
sntp_init();
setenv("TZ", tz, 1);
tzset();
}
bool getLocalTime(struct tm * info, uint32_t ms)
{
uint32_t count = ms / 10;
time_t now;
time(&now);
localtime_r(&now, info);
if(info->tm_year > (2016 - 1900)){
return true;
}
while(count--) {
delay(10);
time(&now);
localtime_r(&now, info);
if(info->tm_year > (2016 - 1900)){
return true;
}
}
return false;
}