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Rtc.ino
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Rtc.ino
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#if defined ( ARDUINO )
#define WIFI_SSID "YOUR WIFI SSID NAME"
#define WIFI_PASSWORD "YOUR WIFI PASSWORD"
#define NTP_TIMEZONE "JST-9"
#define NTP_SERVER1 "ntp.nict.jp"
#define NTP_SERVER2 "ntp.jst.mfeed.ad.jp"
#define NTP_SERVER3 ""
#include <WiFi.h>
#endif
#include <M5Unified.h>
void setup(void)
{
auto cfg = M5.config();
cfg.external_rtc = true; // default=false. use Unit RTC.
M5.begin(cfg);
if (!M5.Rtc.isEnabled())
{
Serial.println("RTC not found.");
M5.Display.println("RTC not found.");
for (;;) { vTaskDelay(500); }
}
Serial.println("RTC found.");
/* /// setup RTC ( direct setting )
// YYYY MM DD hh mm ss
M5.Rtc.setDateTime( { { 2021, 12, 31 }, { 12, 34, 56 } } );
//*/
/* /// setup RTC ( NTP auto setting )
M5.Display.print("WiFi:");
WiFi.begin( WIFI_SSID, WIFI_PASSWORD );
configTzTime(NTP_TIMEZONE, NTP_SERVER1, NTP_SERVER2, NTP_SERVER3);
while (WiFi.status() != WL_CONNECTED)
{
Serial.print('.');
delay(500);
}
Serial.println("\r\n WiFi Connected.");
M5.Display.print("Connected.");
while (sntp_get_sync_status() != SNTP_SYNC_STATUS_COMPLETED)
{
Serial.print('.');
delay(1000);
}
Serial.println("\r\n NTP Connected.");
time_t t = time(nullptr)+1; // Advance one second.
while (t > time(nullptr)); /// Synchronization in seconds
M5.Rtc.setDateTime( localtime( &t ) );
//*/
}
void loop(void)
{
static constexpr const char* const wd[7] = {"Sun","Mon","Tue","Wed","Thr","Fri","Sat"};
delay(500);
auto dt = M5.Rtc.getDateTime();
Serial.printf("RTC : %04d/%02d/%02d (%s) %02d:%02d:%02d\r\n"
, dt.date.year
, dt.date.month
, dt.date.date
, wd[dt.date.weekDay]
, dt.time.hours
, dt.time.minutes
, dt.time.seconds
);
M5.Display.setCursor(0,0);
M5.Display.printf("RTC : %04d/%02d/%02d (%s) %02d:%02d:%02d"
, dt.date.year
, dt.date.month
, dt.date.date
, wd[dt.date.weekDay]
, dt.time.hours
, dt.time.minutes
, dt.time.seconds
);
/// ESP32 internal timer
auto t = time(nullptr);
auto tm = localtime(&t);
Serial.printf("ESP32:%04d/%02d/%02d (%s) %02d:%02d:%02d\r\n",
tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
wd[tm->tm_wday],
tm->tm_hour, tm->tm_min, tm->tm_sec);
M5.Display.setCursor(0,20);
M5.Display.printf("ESP32:%04d/%02d/%02d (%s) %02d:%02d:%02d",
tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
wd[tm->tm_wday],
tm->tm_hour, tm->tm_min, tm->tm_sec);
}
//*/
#if !defined ( ARDUINO )
extern "C" {
void loopTask(void*)
{
setup();
for (;;) {
loop();
}
vTaskDelete(NULL);
}
void app_main()
{
xTaskCreatePinnedToCore(loopTask, "loopTask", 8192, NULL, 1, NULL, 1);
}
}
#endif