2024-12-0600 SD Karte eingebunden.

platformio.ini

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

src/main.cpp

@@ -42,11 +42,14 @@ Adafruit_MAX31865 thermo = Adafruit_MAX31865(5, 23, 19, 18);
 
 int LED_Blue = 2;
 
+
 #include <SPI.h>
 #include <Wire.h>
 #include <Adafruit_GFX.h>
 #include <Adafruit_SSD1306.h>
 #include <WiFi.h>
+#include <SD.h>
+
 
 #define SCREEN_WIDTH 128 // OLED display width, in pixels
 #define SCREEN_HEIGHT 64 // OLED display height, in pixels
@@ -57,6 +60,15 @@ Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
 
 #define NUMFLAKES     10 // Number of snowflakes in the animation example
 
+#define chipSelect  4
+
+#define SD_SCK 14
+#define SD_MISO 12
+#define SD_MOSI 13
+#define SD_CS 27
+
+
+
 const char* ssid     = "MagentaWLAN-RGDO";
 const char* password = "93329248424922704583";
 const char* NTP_SERVER = "de.pool.ntp.org";
@@ -67,6 +79,8 @@ time_t now;
 long unsigned lastNTPtime;
 unsigned long lastEntryTime;
 
+File myFile;
+
 char szZeit[20]; 
 
 bool getNTPtime(int sec) {
@@ -124,6 +138,16 @@ void blink(){
   digitalWrite (LED_Blue, !HIGH);
 } 
 
+void blinkError(){
+  digitalWrite (LED_Blue, HIGH);
+  delay(50);
+  digitalWrite (LED_Blue, !HIGH);
+  delay(50);
+  digitalWrite (LED_Blue, HIGH);
+  delay(50);
+  digitalWrite (LED_Blue, !HIGH);
+}
+
 void drawIST(float wert){
   char msgt[20];
   dtostrf(wert, 6, 2, msgt);
@@ -155,7 +179,16 @@ void drawIST(float wert){
 
 void setup() {
   Serial.begin(115200);
+  //pinMode (chipSelect, OUTPUT);
+  pinMode (LED_Blue, OUTPUT);
+  /* while (!Serial) {
 
+
+    ; // wait for serial port to connect. Needed for native USB port only
+
+
+  }
+ */
   // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
   if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { 
     Serial.println(F("SSD1306 allocation failed"));
@@ -165,7 +198,18 @@ void setup() {
   display.ssd1306_command(SSD1306_SETCONTRAST);
   display.ssd1306_command(8);  
   
-  delay(1000);
+   delay(50);
+  display.clearDisplay();
+  display.setTextSize(2);             // Normal 1:1 pixel scale
+  display.setTextColor(WHITE);        // Draw white text
+  display.setCursor(0,0);             // Start at top-left corner
+
+  Serial.println("Wait to Wlan.");
+  display.println("Start.");
+  display.setTextSize(2);
+  display.println("Wait to   Wlan.");
+  display.display();
+
   WiFi.begin(ssid, password);
   while (WiFi.status() != WL_CONNECTED) {
     delay(500);
@@ -175,16 +219,26 @@ void setup() {
 
   
 
+  if(!SD.begin(SD_CS)){
+    Serial.println("SD-Card not connected!");
+    while(1){
+      blinkError();
+    };
+  }
+  else{
+    Serial.println("SD-Card initialized");
+  }
+
+
+
   // Clear the buffer
   display.clearDisplay();
   display.setTextSize(2);             // Normal 1:1 pixel scale
   display.setTextColor(WHITE);        // Draw white text
-  display.setCursor(0,0);             // Start at top-left corner
+  display.setCursor(0,0);    
   display.println("--PT1000--");
   //display.display();
-
+  //digitalWrite (LED_Blue, HIGH);
-  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