2024-12-0400
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@ -13,6 +13,7 @@ platform = espressif32
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board = lolin32
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framework = arduino
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monitor_speed=115200
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monitor_filters=time
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lib_deps =
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# The exact version
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adafruit/Adafruit MAX31865 library @ 1.6.2
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203
src/main.cpp
203
src/main.cpp
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@ -46,6 +46,7 @@ int LED_Blue = 2;
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#include <Wire.h>
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#include <Adafruit_GFX.h>
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#include <Adafruit_SSD1306.h>
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#include <WiFi.h>
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#define SCREEN_WIDTH 128 // OLED display width, in pixels
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#define SCREEN_HEIGHT 64 // OLED display height, in pixels
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@ -56,6 +57,67 @@ Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
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#define NUMFLAKES 10 // Number of snowflakes in the animation example
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const char* ssid = "MagentaWLAN-RGDO";
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const char* password = "93329248424922704583";
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const char* NTP_SERVER = "de.pool.ntp.org";
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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)
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tm timeinfo;
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time_t now;
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long unsigned lastNTPtime;
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unsigned long lastEntryTime;
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char szZeit[20];
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bool getNTPtime(int sec) {
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{
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uint32_t start = millis();
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do {
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time(&now);
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localtime_r(&now, &timeinfo);
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delay(10);
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} while (((millis() - start) <= (1000 * sec)) && (timeinfo.tm_year < (2016 - 1900)));
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if (timeinfo.tm_year <= (2016 - 1900)) return false; // the NTP call was not successful
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}
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return true;
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}
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void showTime(tm localTime) {
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Serial.printf(
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"%04d-%02d-%02d %02d:%02d:%02d, day %d, %s time\n",
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localTime.tm_year + 1900,
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localTime.tm_mon + 1,
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localTime.tm_mday,
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localTime.tm_hour,
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localTime.tm_min,
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localTime.tm_sec,
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(localTime.tm_wday > 0 ? localTime.tm_wday : 7 ),
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(localTime.tm_isdst == 1 ? "summer" : "standard")
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);
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}
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void zeigeZeit(tm localTime){
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//Serial.printf(" Zeit: %s", szZeit); // Nur zum testen ....
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display.setCursor(0,20); // Zeile 2
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display.setTextSize(1);
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// Alten Inhalt löschen....................
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display.setTextColor(BLACK);
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display.println(szZeit);
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// Jetzt neu schreiben ....................
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display.setCursor(0,20); // Zeile 2
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display.setTextColor(WHITE);
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sprintf(szZeit,"%02d:%02d:%02d\n",
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localTime.tm_hour,
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localTime.tm_min,
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localTime.tm_sec);
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display.println(szZeit);
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display.setTextSize(2);
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// Feritg --------------------------------
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}
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void blink(){
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digitalWrite (LED_Blue, HIGH);
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delay(100);
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@ -64,10 +126,17 @@ void blink(){
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void drawIST(float wert){
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char msgt[20];
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String mw;
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dtostrf(wert, 6, 2, msgt);
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mw = msgt;
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display.clearDisplay();
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/*
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Punkt in Komma wndeln.
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Sucht dass Array msgt durch
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auf . und ersetzt es durch , .
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*/
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for (byte i = 0; i < sizeof(msgt) - 1; i++) {
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if (msgt[i] == '.'){
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msgt[i] = ',';
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}
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}
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display.setCursor(0,0); // Start at top-left corner
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display.println("--PT1000--");
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display.setCursor(0,32); // Zeile 2
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@ -76,8 +145,7 @@ void drawIST(float wert){
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display.println("Temperatur:");
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display.setCursor(20,48); // Zeile 3
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display.setTextSize(2);
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mw.replace('.',',');
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display.print(mw);
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display.print(msgt);
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display.setTextSize(1);
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display.print(" o");
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display.setTextSize(2);
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@ -87,13 +155,25 @@ void drawIST(float wert){
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void setup() {
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Serial.begin(115200);
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// SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
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if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
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Serial.println(F("SSD1306 allocation failed"));
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for(;;); // Don't proceed, loop forever
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}
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display.display();
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delay(2000); // Pause for 2 seconds
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display.ssd1306_command(SSD1306_SETCONTRAST);
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display.ssd1306_command(8);
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delay(1000);
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WiFi.begin(ssid, password);
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(".");
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}
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Serial.printf("\nConnecting to %s\n", ssid);
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// Clear the buffer
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display.clearDisplay();
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@ -101,64 +181,83 @@ void setup() {
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display.setTextColor(WHITE); // Draw white text
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display.setCursor(0,0); // Start at top-left corner
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display.println("--PT1000--");
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display.display();
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//display.display();
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pinMode (LED_Blue, OUTPUT);
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digitalWrite (LED_Blue, HIGH);
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Serial.println("Adafruit MAX31865 PT100 Sensor Test!");
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thermo.begin(MAX31865_2WIRE); // set to 2WIRE or 4WIRE as necessary
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configTime(0, 0, NTP_SERVER);
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// See https://github.com/nayarsystems/posix_tz_db/blob/master/zones.csv for Timezone codes for your region
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setenv("TZ", TZ_INFO, 1);
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if (getNTPtime(10)) { // wait up to 10sec to sync
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} else {
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Serial.println("Time not set");
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delay(5000);
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ESP.restart();
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}
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lastNTPtime = time(&now);
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zeigeZeit(timeinfo);
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display.display();
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}
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int Minuten, MintenOld = 99;
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void loop() {
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uint16_t rtd = thermo.readRTD();
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Serial.print("RTD value: "); Serial.println(rtd);
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float ratio = rtd;
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float messung;
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ratio /= 32768;
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Serial.print("Ratio = "); Serial.println(ratio,8);
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Serial.print("Resistance = "); Serial.println(RREF*ratio,8);
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messung = thermo.temperature(RNOMINAL, RREF);
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Serial.print("Temperature = "); Serial.println(messung);
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getNTPtime(10);
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//display.clearDisplay(); // Lösche Display
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/* display.clearDisplay();
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display.setCursor(0,0); // Start at top-left corner
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display.println("--PT1000--");
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display.setCursor(0,32); // Start at top-left corner
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display.println(thermo.temperature(RNOMINAL, RREF));
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display.display(); */
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zeigeZeit(timeinfo);
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drawIST(messung);
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// Check and print any faults
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uint8_t fault = thermo.readFault();
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if (fault) {
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Serial.print("Fault 0x"); Serial.println(fault, HEX);
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if (fault & MAX31865_FAULT_HIGHTHRESH) {
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Serial.println("RTD High Threshold");
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Minuten = timeinfo.tm_min;
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if (Minuten != MintenOld){
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MintenOld = Minuten;
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display.clearDisplay(); // Lösche Display
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zeigeZeit(timeinfo);
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uint16_t rtd = thermo.readRTD();
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Serial.print("RTD value: "); Serial.println(rtd);
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float ratio = rtd;
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float messung;
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ratio /= 32768;
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Serial.print("Ratio = "); Serial.println(ratio,8);
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Serial.print("Resistance = "); Serial.println(RREF*ratio,8);
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messung = thermo.temperature(RNOMINAL, RREF);
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Serial.printf("Temperature: %3.1f °C\n", messung);
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drawIST(messung);
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// Check and print any faults
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uint8_t fault = thermo.readFault();
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if (fault) {
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Serial.print("Fault 0x"); Serial.println(fault, HEX);
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if (fault & MAX31865_FAULT_HIGHTHRESH) {
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Serial.println("RTD High Threshold");
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}
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if (fault & MAX31865_FAULT_LOWTHRESH) {
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Serial.println("RTD Low Threshold");
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}
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if (fault & MAX31865_FAULT_REFINLOW) {
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Serial.println("REFIN- > 0.85 x Bias");
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}
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if (fault & MAX31865_FAULT_REFINHIGH) {
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Serial.println("REFIN- < 0.85 x Bias - FORCE- open");
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}
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if (fault & MAX31865_FAULT_RTDINLOW) {
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Serial.println("RTDIN- < 0.85 x Bias - FORCE- open");
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}
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if (fault & MAX31865_FAULT_OVUV) {
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Serial.println("Under/Over voltage");
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}
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thermo.clearFault();
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}
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if (fault & MAX31865_FAULT_LOWTHRESH) {
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Serial.println("RTD Low Threshold");
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}
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if (fault & MAX31865_FAULT_REFINLOW) {
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Serial.println("REFIN- > 0.85 x Bias");
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}
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if (fault & MAX31865_FAULT_REFINHIGH) {
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Serial.println("REFIN- < 0.85 x Bias - FORCE- open");
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}
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if (fault & MAX31865_FAULT_RTDINLOW) {
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Serial.println("RTDIN- < 0.85 x Bias - FORCE- open");
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}
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if (fault & MAX31865_FAULT_OVUV) {
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Serial.println("Under/Over voltage");
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}
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thermo.clearFault();
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Serial.println();
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blink();
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}
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Serial.println();
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blink();
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delay(5000);
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display.display();
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delay(100);
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display.display();
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}
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