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One_shot_one_opportunity.ino

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+/* Project Sunride's UKSEDS 2021 team Avionics.
+ * An Arduino Nano 33 BLE Sense is used to record acceleration, rate of rotation, air pressure, temperature, humidity and altitude of the rocket itself.
+ * This data is then stored on an SD Card using the adafruit MicroSD Breakout board.
+ * The pinout of the BLE Sense can be found here: https://content.arduino.cc/assets/Pinout-NANOsense_latest.pdf
+ * A link to a tutorial for the SD card board can be found here: https://learn.adafruit.com/adafruit-micro-sd-breakout-board-card-tutorial?view=all
+ * Created by :
+/* Date: 2021  
+ */
+//////////////////////////////////////////////////////////////
+//Libraries
+#include <ArduinoBLE.h>
+#include <Arduino_LSM9DS1.h> // Library for Accelerometer and gyroscope
+#include <Arduino_LPS22HB.h> // Library for barometer, 
+#include <Arduino_HTS221.h> //Library for the temperature and humidity
+
+#include <SPI.h> //SPI labrary for micro SD card reader
+#include <SdFat.h> ////SD card reader library, same as SD.h but allows longer file names
+
+#include <Adafruit_GPS.h> //Adafruit GPS library
+///////////////////////////////////////////////
+//Definitions
+#define baseName "LaunchData"
+#define GPSSerial Serial1
+#define GPSECHO false
+#define CSPin 4
+#define sensorPin A0
+////////////////////////////////////////////////////////////
+//Variable Declaration
+const int baseNameSize = sizeof(baseName) - 1;
+char fileName[] = baseName "00.txt";
+
+float pressureAtSea = 101325;
+
+unsigned long t;
+
+unsigned long Previous_time = 0;
+///////////////////////////////////////////////////////////
+SdFat SD;
+Adafruit_GPS GPS(&GPSSerial);
+
+void setup() {
+  Serial.begin(115200);
+  GPS.begin(9600);
+
+  Serial.println("Initializing SD card");
+
+  if (!SD.begin(CSPin)) {
+    Serial.println("Initialization failed/card not present");
+    while (1);
+  }
+
+//  while (SD.exists(fileName)) {
+//    if (fileName[baseNameSize + 1] != '9') {
+//      fileName[baseNameSize + 1]++;
+//    } else if (fileName[baseNameSize] != '9') {
+//      fileName[baseNameSize + 1] = '0';
+//      fileName[baseNameSize]++;
+//    } else {
+//      Serial.println("Can't create file name");
+//      return;
+//    }
+//  }
+
+  Serial.println("Card initialized");
+  Serial.print("Created: ");
+  Serial.println(fileName);
+  Serial.println("");
+
+  pinMode(sensorPin, INPUT); //For the gas sensor
+
+  GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA);
+  GPS.sendCommand(PMTK_SET_NMEA_UPDATE_1HZ);
+  GPS.sendCommand(PGCMD_ANTENNA);
+
+  //Initialise sensors on ble 
+  if (!IMU.begin()) {
+    Serial.println("Failed to initialize IMU!");
+    while (1);
+  }
+  if (!BARO.begin()) {
+    Serial.println("Failed to initialize pressure sensor!");
+    while (1);
+  }
+  if (!HTS.begin()) {
+    Serial.println("Failed to initialize humidity temperature sensor!");
+    while (1);
+  }
+}
+
+void loop() {
+  int fixed = (int)GPS.fix;
+  int quality = (int)GPS.fixquality;
+
+  float lat1;
+  char lat2;
+  float long1;
+  char long2;
+  float speed1;
+  float altitude1;
+  int sats;
+
+  //GPS stuff
+  if (GPS.newNMEAreceived()) {
+    if (!GPS.parse(GPS.lastNMEA()))
+      return;
+  }
+
+//  if ((int)GPS.fix == 0){  
+//    lat1 = 0;
+//    //lat2 = 'x';
+//    long1 = 0;
+//    //long2 = 'x';
+//    speed1 = 0;
+//    altitude1 = 0;
+//    sats = 0;
+//  }
+   //add delay with millis?
+  if (GPS.fix) {
+    lat1 = (GPS.latitude);
+    //lat2 = (GPS.lat);
+    long1 = (GPS.longitude);
+    //long2 = (GPS.lon);
+    speed1 = (GPS.speed);
+    altitude1 = (GPS.altitude);
+    sats = ((int)GPS.satellites);
+  }
+
+//  else{
+//    lat1 = 0;
+//    lat2 = 'x';
+//    long1 = 0;
+//    long2 = 'x';
+//    speed1 = 0;
+//    altitude1 = 0;
+//    sats = 0;
+//  }
+  delay(50); // SAMPLING RATE OR PAUSE TO PROCESS DATA IF YOU WILL 
+ // Test this rate to see if it changes anything, if not increase it up to 80 
+ //This is a lot but it should give the gps more than enough time
+
+  String data = ""; //Variable to put the string data in 
+
+  //Read the sensor values and put them into a float variable
+  float pressure = BARO.readPressure() * 1000;
+  float temperature = HTS.readTemperature();
+  float humidity = HTS.readHumidity();
+
+  //Gas sensor reading
+  int gasReading = analogRead(sensorPin);
+
+
+  //If the accelerometer is getting a reading, then read and put into variables
+  float ax, ay, az;
+  if (IMU.accelerationAvailable()) {
+    IMU.readAcceleration(ax, ay, az);
+  }
+
+  //If the gyroscope is getting a reading, then read and put into variables
+  float gx, gy, gz;
+  if (IMU.gyroscopeAvailable()) {
+    IMU.readGyroscope(gx, gy, gz);
+  }
+
+  //Altitude calculation
+  float height = ((pow((pressureAtSea/pressure), (1/5.257))-1)*(15 + 273.15))/(0.0065);
+
+  //Detect launch with acceleration  !!!!!!!Don't know if this should go in void loop!!!!!
+  // accelMag = sqrt(ax^2 + ay^2 + az^2)//Magnitude of the acceleration
+  //if (accelMag > 5) {//If the acceleration is higher than 5gs then start the recording of the data.
+  //start recording
+  //need to make it so that the acceleration is high for like 500ms before recording starts
+  //Would it be possible to also save the data for the 20 or so seconds before the launch?
+  //}
+
+
+  //Function to store time since device was powered on/reset
+  t = millis();
+
+  //Create new file every 30 seconds
+  if (millis() - Previous_time >= 30000) {
+    Previous_time = millis();
+    while (SD.exists(fileName)) {
+    if (fileName[baseNameSize + 1] != '9') {
+      fileName[baseNameSize + 1]++;
+    } else if (fileName[baseNameSize] != '9') {
+      fileName[baseNameSize + 1] = '0';
+      fileName[baseNameSize]++;
+    } else {
+      Serial.println("Can't create file name");
+      return;
+    }
+  }
+  }
+
+  //Writing to the micro SD card
+  data += String(t) + ", " + String(ax) + ", " + String(ay) + ", " + String(az) + ", " + String(gx) + ", " + String(gy) + ", " + String(gz) + ", " + String(pressure) + ", " + String(temperature)
+  + ", " + String(humidity) + ", " + String(height) + ", " + String(gasReading) + ", " + String(fixed) + ", " + String(quality) + ", " + String(lat1) + String(lat2) + ", " + String(long1) + String(long2)
+  + ", " + String(speed1) + ", " + String(altitude1) + ", " + String(sats);
+
+  File dataFile = SD.open(fileName, FILE_WRITE);
+  //dataFile.println("Time\t Acceleration\t Angular velocity\t Pressure Temperature Humidty Height Gas Latitude Longitude Speed Altitude Satellite");
+  if (dataFile) {
+    dataFile.println(data);
+    dataFile.close();
+  }
+  else {
+    Serial.print("Error opening ");
+    Serial.println(fileName);
+  }
+
+  // Find the apogee of the rocket
+  if (dataFile.isOpen()){
+        int height;
+        int min,max;
+        int i = 0;
+        while (dataFile >> height){
+            if (!height) break;
+            if (i++ == 0){
+            min = height; max = height;
+            }
+            if (height < min){
+                min = height;}
+            else if (height > max){
+                max = height;}
+        }
+  }
+  dataFile.println("The maximum height is"); // This should find the apogee, give it a try 
+  dataFile.println(height);
+
+  delay(10); //Sampling rate BIATCH, general one in order to properly print everything 
+}