Différences

Ci-dessous, les différences entre deux révisions de la page.

--- start:esp32:max7219:horloge [2026/08/19 19:01] – [ESP32 Max7219 horloge] admin
+++ start:esp32:max7219:horloge [2026/08/22 17:37] (Version actuelle) – [exemples Programmes Horloge] admin
@@ Ligne 2: / Ligne 2: @@
 {{ :start:esp32:max7219:capture_d_ecran_du_2026-08-19_18-43-36.png?direct&600 |}}
+==== exemples Programmes Horloge ====
+<code c horloge002.ino>
+//  makerguides.com: synchronizing ESP32 time with SNTP server
+#include "WiFi.h"
+#include "esp_sntp.h"
+#include <MD_Parola.h>
+#include <MD_MAX72xx.h>
+#include <SPI.h>
+#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
+#define MAX_DEVICES 4
+#define CLK_PIN   18
+#define DATA_PIN  23
+#define CS_PIN    5
+MD_Parola Display = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);
+const char* ssid = "---------";
+const char* password = "-----------";
+// https://github.com/nayarsystems/posix_tz_db/blob/master/zones.csv
+//const char *timezone = "AEST-10AEDT,M10.1.0,M4.1.0/3"; //Sydney Australie
+const char *timezone = "CET-1CEST,M3.5.0,M10.5.0/3";//PARIS
+String Time, heure, minute;
+String Formatted_date;
+void initWiFi() {
+  WiFi.begin(ssid, password);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(1000);
+    Serial.println("Attente connection wifi....");
+  }
+}
+void initSNTP() {
+  sntp_set_sync_interval(60 * 60 * 1000UL);  // 1 h
+  esp_sntp_setoperatingmode(ESP_SNTP_OPMODE_POLL);
+  esp_sntp_setservername(0, "pool.ntp.org");
+  esp_sntp_init();
+  setenv("TZ", timezone, 1);
+  tzset();
+}
+void wait4SNTP() {
+  Serial.println("String Time, hour, minute;String Formatted_date;synchronizing...");
+  while (sntp_get_sync_status() != SNTP_SYNC_STATUS_COMPLETED) {
+    delay(100);
+  }
+}
+void obtainTime() {
+  // https://cplusplus.com/reference/ctime/tm/
+  char buff1[4];
+  char buff2[4];
+  struct tm t;
+  getLocalTime(&t);
+  sprintf(buff1, "%02d", t.tm_hour);
+  sprintf(buff2,"%02d" , t.tm_min);
+  Serial.println("Heures");
+  Serial.println(buff1);
+   Serial.println("Minutes");
+  Serial.println(buff2);
+  heure = buff1;
+  minute = buff2;
+  Time = heure +":"+ minute;
+  Display. setTextAlignment(PA_CENTER);
+  Display.print(Time);
+}
+void setup()
+{
+  Serial.begin(115200);
+  initWiFi();
+  initSNTP();
+  wait4SNTP();
+  Display.begin();
+  Display.setIntensity(0);
+  Display.displayClear();
+}
+void loop()
+ {
+  obtainTime();
+  delay(1000);
+}
+</code>