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Code/gps_logger_yb

+#include <TinyGPS++.h>
+#include <SoftwareSerial.h>
+#include "FS.h"
+#include "SD.h"
+#include <SPI.h>
+
+static const int RXPin = 16, TXPin = 17;
+static const uint32_t GPSBaud = 9600;
+
+#define SD_CS 5
+RTC_DATA_ATTR int readingID = 0;
+
+String dataMessage;
+String fileName = "leer"; 
+String monat,tag,jahr;
+String stunde,minute1,sekunde;
+float flat, flong, kmh;
+int sat; 
+
+// The TinyGPS++ object
+TinyGPSPlus gps;
+
+// The serial connection to the GPS device
+SoftwareSerial ss(RXPin, TXPin);
+
+// -----------------------------------------------------
+
+void setup() {
+
+  Serial.begin(115200);
+  ss.begin(GPSBaud);
+
+ // Initialize SD card
+  SD.begin(SD_CS);  
+  if(!SD.begin(SD_CS)) {
+    Serial.println("Card Mount Failed");
+    return;
+  }
+  uint8_t cardType = SD.cardType();
+  if(cardType == CARD_NONE) {
+    Serial.println("No SD card attached");
+    return;
+  }
+  Serial.println("Initializing SD card...");
+  if (!SD.begin(SD_CS)) {
+    Serial.println("ERROR - SD card initialization failed!");
+    return;    // init failed
+  }
+  
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+  smartDelay(1000);
+  Serial.print(gps.date.value());
+  if(gps.date.value() > 0 && fileName!="leer"){
+    //Serial.print("File Name wurde geschrieben und warte auf loggen: ");
+    Serial.println(fileName.c_str()); 
+    loggeDaten(); 
+  }else{
+    erstelleFileName();
+    erstelleFile();
+  }
+    
+}
+
+static void smartDelay(unsigned long ms)
+{
+  unsigned long start = millis();
+  do 
+  {
+    while (ss.available())
+      gps.encode(ss.read());
+  } while (millis() - start < ms);
+}
+
+void erstelleFileName() {
+  if(gps.date.value() > 0)
+  {
+    fileName = "/" + String(gps.date.value()) + ".txt"; 
+    Serial.print("File Name war erfolgreich: ");
+    Serial.println(fileName.c_str());
+    Serial.print("Der Zeitstempel: ");
+    Serial.println(gps.time.value());
+  }
+  Serial.print("Noch kein Zeitstempel!!! ");
+  Serial.println(gps.date.value());  
+}
+
+void erstelleFile(){
+  if(fileName != "leer"){
+  File file = SD.open(fileName.c_str());
+  if(!file) {
+    Serial.println("File doens't exist");
+    Serial.println("Creating file...");
+    writeFile(SD, fileName.c_str(), "Reading ID, Tag, Monat, Jahr, Stunde, Minute, Sekunde, Latitude, Longitude, Speed, AnzahlSat \r\n");
+  }
+  else {
+    Serial.println("File already exists");  
+  }
+  file.close();  
+  }
+}
+
+void leseGPS(){
+  
+   while (ss.available() > 0)
+    if (gps.encode(ss.read()))
+
+  if (millis() > 5000 && gps.charsProcessed() < 10)
+  {
+    Serial.println(F("No GPS detected: check wiring."));
+    while(true);
+  }
+  
+  tag = gps.date.day();
+  monat = gps.date.month();
+  jahr = gps.date.year();
+  stunde = gps.time.hour();
+  minute1 = gps.time.minute();
+  sekunde = gps.time.second();
+  flat = gps.location.lat();
+  flong = gps.location.lng(); 
+  kmh = gps.speed.kmph();
+  sat = gps.satellites.value();
+
+  Serial.print("HIER KOMMT LATITUDE: ");
+  Serial.println(gps.location.lat()); 
+}
+
+void loggeDaten() {
+  if (gps.date.isValid()){
+    leseGPS();
+  dataMessage = String(readingID) + "," + String(tag) + "," + String(monat) + "," 
+                + String(jahr) + "," + String(stunde) + "," + String(minute1) + "," 
+                + String(sekunde) + "," + String(flat, 6) + "," + String(flong, 6) + "," + String(kmh) + "," + String(sat) + "\r\n";
+  Serial.print("Save data: ");
+  Serial.println(dataMessage);
+  appendFile(SD, fileName.c_str(), dataMessage.c_str());
+  readingID++;
+  }
+}
+
+// Write to the SD card (DON'T MODIFY THIS FUNCTION)
+void writeFile(fs::FS &fs, const char * path, const char * message) {
+  Serial.printf("Writing file: %s\n", path);
+
+  File file = fs.open(path, FILE_WRITE);
+  if(!file) {
+    Serial.println("Failed to open file for writing");
+    return;
+  }
+  if(file.print(message)) {
+    Serial.println("File written");
+  } else {
+    Serial.println("Write failed");
+  }
+  file.close();
+}
+
+// Append data to the SD card (DON'T MODIFY THIS FUNCTION)
+void appendFile(fs::FS &fs, const char * path, const char * message) {
+  Serial.printf("Appending to file: %s\n", path);
+
+  File file = fs.open(path, FILE_APPEND);
+  if(!file) {
+    Serial.println("Failed to open file for appending");
+    return;
+  }
+  if(file.print(message)) {
+    Serial.println("Message appended");
+  } else {
+    Serial.println("Append failed");
+  }
+  file.close();
+}