2024-12-0400

platformio.ini

@@ -13,6 +13,7 @@ platform = espressif32
 board = lolin32
 framework = arduino
 monitor_speed=115200
+monitor_filters=time
 lib_deps =
   # The exact version
   adafruit/Adafruit MAX31865 library @ 1.6.2

src/main.cpp

@@ -46,6 +46,7 @@ int LED_Blue = 2;
 #include <Wire.h>
 #include <Adafruit_GFX.h>
 #include <Adafruit_SSD1306.h>
+#include <WiFi.h>
 
 #define SCREEN_WIDTH 128 // OLED display width, in pixels
 #define SCREEN_HEIGHT 64 // OLED display height, in pixels
@@ -56,6 +57,67 @@ Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
 
 #define NUMFLAKES     10 // Number of snowflakes in the animation example
 
+const char* ssid     = "MagentaWLAN-RGDO";
+const char* password = "93329248424922704583";
+const char* NTP_SERVER = "de.pool.ntp.org";
+const char* TZ_INFO    = "CET-1CEST-2,M3.5.0/02:00:00,M10.5.0/03:00:00";  // enter your time zone (https://remotemonitoringsystems.ca/time-zone-abbreviations.php)
+
+tm timeinfo;
+time_t now;
+long unsigned lastNTPtime;
+unsigned long lastEntryTime;
+
+char szZeit[20]; 
+
+bool getNTPtime(int sec) {
+
+  {
+    uint32_t start = millis();
+    do {
+      time(&now);
+      localtime_r(&now, &timeinfo);
+      delay(10);
+    } while (((millis() - start) <= (1000 * sec)) && (timeinfo.tm_year < (2016 - 1900)));
+    if (timeinfo.tm_year <= (2016 - 1900)) return false;  // the NTP call was not successful
+  }
+  return true;
+}
+
+void showTime(tm localTime) {
+  Serial.printf(
+    "%04d-%02d-%02d %02d:%02d:%02d, day %d, %s time\n",
+    localTime.tm_year + 1900,
+    localTime.tm_mon + 1,
+    localTime.tm_mday,
+    localTime.tm_hour,
+    localTime.tm_min,
+    localTime.tm_sec,
+    (localTime.tm_wday > 0 ? localTime.tm_wday : 7 ),
+    (localTime.tm_isdst == 1 ? "summer" : "standard")
+  );
+  }
+
+void zeigeZeit(tm localTime){
+  
+  //Serial.printf(" Zeit: %s", szZeit);  // Nur zum testen ....
+  display.setCursor(0,20);  // Zeile 2
+  display.setTextSize(1);
+  // Alten Inhalt löschen....................
+  display.setTextColor(BLACK);
+  display.println(szZeit);
+  // Jetzt neu schreiben ....................
+  display.setCursor(0,20);  // Zeile 2
+  display.setTextColor(WHITE);
+  sprintf(szZeit,"%02d:%02d:%02d\n",
+  localTime.tm_hour,
+  localTime.tm_min,
+  localTime.tm_sec);
+  display.println(szZeit);
+  display.setTextSize(2);
+  // Feritg --------------------------------
+}
+
+
 void blink(){
   digitalWrite (LED_Blue, HIGH);
   delay(100);
@@ -64,10 +126,17 @@ void blink(){
 
 void drawIST(float wert){
   char msgt[20];
-  String mw;
   dtostrf(wert, 6, 2, msgt);
-  mw = msgt;
+  /* 
-  display.clearDisplay();
+      Punkt in Komma wndeln.
+      Sucht dass Array msgt durch
+      auf . und ersetzt es durch , .
+  */
+  for (byte i = 0; i < sizeof(msgt) - 1; i++) {
+    if (msgt[i] == '.'){
+      msgt[i] = ',';
+    }         
+  }
   display.setCursor(0,0);             // Start at top-left corner
   display.println("--PT1000--");
   display.setCursor(0,32);  // Zeile 2
@@ -76,8 +145,7 @@ void drawIST(float wert){
   display.println("Temperatur:");
   display.setCursor(20,48);  // Zeile 3
   display.setTextSize(2);
-  mw.replace('.',',');
+  display.print(msgt);
-  display.print(mw);
   display.setTextSize(1);
   display.print(" o");
   display.setTextSize(2);
@@ -87,13 +155,25 @@ void drawIST(float wert){
 
 void setup() {
   Serial.begin(115200);
+
   // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
   if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { 
     Serial.println(F("SSD1306 allocation failed"));
     for(;;); // Don't proceed, loop forever
   }
-  display.display();
+  
-  delay(2000); // Pause for 2 seconds
+  display.ssd1306_command(SSD1306_SETCONTRAST);
+  display.ssd1306_command(8);  
+  
+  delay(1000);
+  WiFi.begin(ssid, password);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+  Serial.printf("\nConnecting to %s\n", ssid);
+
+
 
   // Clear the buffer
   display.clearDisplay();
@@ -101,19 +181,46 @@ void setup() {
   display.setTextColor(WHITE);        // Draw white text
   display.setCursor(0,0);             // Start at top-left corner
   display.println("--PT1000--");
-  display.display();
+  //display.display();
 
   pinMode (LED_Blue, OUTPUT);
   digitalWrite (LED_Blue, HIGH);
   Serial.println("Adafruit MAX31865 PT100 Sensor Test!");
 
   thermo.begin(MAX31865_2WIRE);  // set to 2WIRE or 4WIRE as necessary
+
+  configTime(0, 0, NTP_SERVER);
+  // See https://github.com/nayarsystems/posix_tz_db/blob/master/zones.csv for Timezone codes for your region
+  setenv("TZ", TZ_INFO, 1);
+
+  if (getNTPtime(10)) {  // wait up to 10sec to sync
+  } else {
+    Serial.println("Time not set");
+    delay(5000);
+    ESP.restart();
   }
+  lastNTPtime = time(&now);
+   zeigeZeit(timeinfo);
+   display.display();
+
+}
+
+int Minuten, MintenOld = 99;
 
 
 void loop() {
-  uint16_t rtd = thermo.readRTD();
   
+  getNTPtime(10);
+  //display.clearDisplay(); // Lösche Display
+
+  zeigeZeit(timeinfo);
+
+  Minuten = timeinfo.tm_min;
+  if (Minuten != MintenOld){
+    MintenOld = Minuten;
+    display.clearDisplay(); // Lösche Display
+    zeigeZeit(timeinfo);
+    uint16_t rtd = thermo.readRTD();
     Serial.print("RTD value: "); Serial.println(rtd);
     float ratio = rtd;
     float messung;
@@ -121,19 +228,8 @@ void loop() {
     Serial.print("Ratio = "); Serial.println(ratio,8);
     Serial.print("Resistance = "); Serial.println(RREF*ratio,8);
     messung = thermo.temperature(RNOMINAL, RREF);
-  Serial.print("Temperature = "); Serial.println(messung);
+    Serial.printf("Temperature:  %3.1f °C\n", messung);
-
-  /* display.clearDisplay();
-  display.setCursor(0,0);             // Start at top-left corner
-  display.println("--PT1000--");
-  display.setCursor(0,32);             // Start at top-left corner
-  display.println(thermo.temperature(RNOMINAL, RREF));
-  display.display(); */
-
     drawIST(messung);
-  
-
-
     // Check and print any faults
     uint8_t fault = thermo.readFault();
     if (fault) {
@@ -160,5 +256,8 @@ void loop() {
     }
     Serial.println();
     blink();
-  delay(5000);
+  }
+  display.display();
+  delay(100);
+  display.display();
 }