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Sync time using NTP

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This commit is contained in:
Correl Roush 2023-01-22 11:40:04 -05:00
parent 548a89f824
commit c0220110d6
2 changed files with 35 additions and 18 deletions
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5
src/config.h
View file

@ -1,6 +1,11 @@
#ifndef CONFIG_H_
#define CONFIG_H_
// Olson - POSIX time zone lookup table: https://github.com/nayarsystems/posix_tz_db/blob/master/zones.csv
#define NTP_TIMEZONE "EST5EDT,M3.2.0,M11.1.0" // America/New_York
#define NTP_SERVER1 "0.pool.ntp.org"
#define NTP_SERVER2 "1.pool.ntp.org"
#define NTP_SERVER3 "2.pool.ntp.org"
#define WIFI_SSID "REPLACE_WITH_YOUR_SSID"
#define WIFI_PASSWORD "REPLACE_WITH_YOUR_PASSWORD"

48
src/main.cpp
View file

@ -3,6 +3,7 @@
#include <WiFi.h>
#include <ESPAsyncWebServer.h>
#include <AsyncElegantOTA.h>
#include <sntp.h>
#include "config.h"
class App {
@ -61,19 +62,20 @@ public:
}
void loop() {
static constexpr const char* const wd[7] = {"Sun","Mon","Tue","Wed","Thr","Fri","Sat"};
auto dt = M5.Rtc.getDateTime();
auto t = time(nullptr);
auto tm = localtime(&t);
M5.Display.setCursor(0, M5.Display.height() / 3);
M5.Display.setFont(&fonts::Orbitron_Light_24);
M5.Display.printf("%s\n%04d.%02d.%02d\n"
, wd[dt.date.weekDay]
, dt.date.year
, dt.date.month
, dt.date.date
, wd[tm->tm_wday]
, tm->tm_year + 1900
, tm->tm_mon + 1
, tm->tm_mday
);
M5.Display.setFont(&fonts::Orbitron_Light_32);
M5.Display.printf("%02d:%02d "
, dt.time.hours
, dt.time.minutes
, tm->tm_hour
, tm->tm_min
);
delay(10000);
}
@ -88,25 +90,35 @@ void setup(void) {
M5.begin(cfg);
M5.Display.init();
M5.Display.setTextSize(3);
M5.Display.startWrite();
M5.Display.setCursor(0, M5.Display.height() / 2);
M5.Display.setCursor(0, M5.Display.height() / 4);
M5.Display.printf("Starting up...");
M5.Display.endWrite();
M5.Display.print("Connecting to WiFi");
WiFi.mode(WIFI_STA);
WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
Serial.println("");
M5.Display.println("");
// Wait for connection
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
M5.Display.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(WIFI_SSID);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
M5.Display.println("");
M5.Display.print("Connected to ");
M5.Display.println(WIFI_SSID);
M5.Display.print("IP address: ");
M5.Display.println(WiFi.localIP());
M5.Display.print("Syncing time");
configTzTime(NTP_TIMEZONE, NTP_SERVER1, NTP_SERVER2, NTP_SERVER3);
while (sntp_get_sync_status() != SNTP_SYNC_STATUS_COMPLETED) {
M5.Display.print('.');
delay(1000);
}
M5.Display.println("");
time_t t = time(nullptr)+1; // Advance one second.
while (t > time(nullptr)); /// Synchronization in seconds
M5.Rtc.setDateTime( gmtime( &t ) );
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) {
request->send(200, "text/plain", "Hi! I am ESP32.");
@ -114,7 +126,7 @@ void setup(void) {
AsyncElegantOTA.begin(&server); // Start ElegantOTA
server.begin();
Serial.println("HTTP server started");
M5.Display.println("HTTP server started");
app = new Clock;
current_app = App::Clock;