34125cee1d
lwip lib bundled with esp32 Arduino supports only one ntp server. Any additional servers set are just silently ignored. This default is different from esp8266 Arduino core and very confusing. Most of the examples provided uses 3 different ntp servers for redundancy while only the first one is used actually. Addressing issue #4964
102 lines
3.2 KiB
C
102 lines
3.2 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 "lwip/apps/sntp.h"
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//#include "tcpip_adapter.h"
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#include "esp_netif.h"
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static void setTimeZone(long offset, int daylight)
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{
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char cst[17] = {0};
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char cdt[17] = "DST";
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char tz[33] = {0};
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if(offset % 3600){
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sprintf(cst, "UTC%ld:%02u:%02u", offset / 3600, abs((offset % 3600) / 60), abs(offset % 60));
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} else {
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sprintf(cst, "UTC%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, "DST%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, "DST%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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* Note: Bundled Arduino lwip supports only ONE ntp server, 2nd and 3rd options are silently ignored
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* see CONFIG_LWIP_DHCP_MAX_NTP_SERVERS define in ./tools/sdk/esp32/sdkconfig
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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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//tcpip_adapter_init(); // Should not hurt anything if already inited
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esp_netif_init();
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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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/*
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* configTzTime
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* sntp setup using TZ environment variable
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* Note: Bundled Arduino lwip supports only ONE ntp server, 2nd and 3rd options are silently ignored
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* see CONFIG_LWIP_DHCP_MAX_NTP_SERVERS define in ./tools/sdk/esp32/sdkconfig
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* */
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void configTzTime(const char* tz, const char* server1, const char* server2, const char* server3)
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{
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//tcpip_adapter_init(); // Should not hurt anything if already inited
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esp_netif_init();
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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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setenv("TZ", tz, 1);
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tzset();
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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 start = millis();
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time_t now;
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while((millis()-start) <= ms) {
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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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delay(10);
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}
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return false;
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}
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