Project #26 – Radio Frequency – Bluetooth GPS Receiver GP-20U7 – Mk24

Published August 26, 2023 | By DonLuc

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#DonLucElectronics #DonLuc #RadioFrequency #Bluetooth #GPS #SparkFun #BME280 #CCS811 #IMU #Arduino #Project #Fritzing #Programming #Electronics #Microcontrollers #Consultant

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GPS Receiver – GP-20U7 (56 Channel)

The GP-20U7 is a compact GPS receiver with a built-in high performances all-in-one GPS chipset. The GP-20U7 accurately provides position, velocity, and time readings as well possessing high sensitivity and tracking capabilities. Thanks to the low power consumption this receiver requires, the GP-20U7 is ideal for portable applications such as tablet PCs, smart phones, and other devices requiring positioning capability. With 56 channels in search mode and 22 channels “All-In-View” tracking, the GP-20U7 is quite the work horse for its size.

DL2307Mk05

1 x SparkFun Thing Plus – ESP32 WROOM
1 x Arduino Uno
1 x SparkFun Bluetooth Mate Silver
1 x SparkFun BME280 – Temperature, Humidity, Barometric Pressure, and Altitude
1 x SparkFun Air Quality Breakout – CCS811
1 x Pololu AltIMU-10 v5
1 x GPS Receiver – GP-20U7
1 x Lithium Ion Battery – 850mAh
2 x SparkFun Cerberus USB Cable

SparkFun Thing Plus – ESP32 WROOM

LED – LED_BUILTIN
SDA – Digital 23
SCL – Digital 22
GPR – Digital 16
GPT – Digital 17
RX2 – Bluetooth
TX2 – Bluetooth
VIN – +3.3V
GND – GND

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DL2307Mk05ps.ino

/* ***** Don Luc Electronics © *****
Software Version Information
Project #26 - Radio Frequency - Bluetooth GPS Receiver GP-20U7 - Mk24
26-24
DL2307Mk05pr.ino
1 x SparkFun Thing Plus - ESP32 WROOM
1 x Arduino Uno
1 x SparkFun Bluetooth Mate Silver
1 x SparkFun BME280 - Temperature, Humidity, Barometric Pressure, and Altitude
1 x SparkFun Air Quality Breakout - CCS811
1 x Pololu AltIMU-10 v5
1 x GPS Receiver - GP-20U7
1 x Lithium Ion Battery - 85mAh
2 x SparkFun Cerberus USB Cable
*/

// Include the Library Code
// Bluetooth Serial
#include "BluetoothSerial.h"
#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
#error Bluetooth is not enabled! Please run `make menuconfig` to and enable it
#endif
// Two Wire Interface (TWI/I2C)
#include <Wire.h>
// SparkFun BME280 - Temperature, Humidity, Barometric Pressure, and Altitude
#include <SparkFunBME280.h>
// SparkFun CCS811 - eCO2 & tVOC
#include <SparkFunCCS811.h>
// Includes and variables for IMU integration
// STMicroelectronics LSM6DS33 gyroscope and accelerometer
#include <LSM6.h>
// STMicroelectronics LIS3MDL magnetometer
#include <LIS3MDL.h>
// STMicroelectronics LPS25H digital barometer
#include <LPS.h>
// GPS Receiver
#include <TinyGPS++.h>
// ESP32 Hardware Serial
#include <HardwareSerial.h>

// Bluetooth Serial
BluetoothSerial SerialBT;

// SparkFun BME280 - Temperature, Humidity, Barometric Pressure, and Altitude
BME280 myBME280;
float BMEtempC = 0;
float BMEhumid = 0;
float BMEpressure = 0;
float BMEaltitudeM = 0;
String FullString = "";

// SparkFun CCS811 - eCO2 & tVOC
// Default I2C Address
#define CCS811_ADDR 0x5B 
CCS811 myCCS811(CCS811_ADDR);
float CCS811CO2 = 0;
float CCS811TVOC = 0;
String FullStringA = "";

// 9DoF IMU
// STMicroelectronics LSM6DS33 gyroscope and accelerometer
LSM6 imu;
// Accelerometer and Gyroscopes
// Accelerometer
int imuAX;
int imuAY;
int imuAZ;
String FullStringB = "";
// Gyroscopes 
int imuGX;
int imuGY;
int imuGZ;
String FullStringC = "";
// STMicroelectronics LIS3MDL magnetometer
LIS3MDL mag;
// Magnetometer
int magX;
int magY;
int magZ;
String FullStringD = "";
// STMicroelectronics LPS25H digital barometer
LPS ps;
// Digital Barometer
float pressure;
float altitude;
float temperature;
String FullStringF = "";

// ESP32 HardwareSerial
HardwareSerial tGPS(2);

// GPS Receiver
#define gpsRXPIN 16
// This one is unused and doesnt have a conection
#define gpsTXPIN 17
// The TinyGPS++ object
TinyGPSPlus gps;
// Latitude
float TargetLat;
// Longitude
float TargetLon;
String FullStringG = "";
// GPS Date, Time, Speed, Altitude
// GPS Date
String TargetDat;
// GPS Time
String TargetTim;
// GPS Speeds M/S
String TargetSMS;
// GPS Speeds Km/h
String TargetSKH;
// GPS Altitude Meters
String TargetALT;
// GPS Status
String GPSSt = "";
String FullStringH = "";

// Software Version Information
String sver = "26-24";

void loop() {

  // SparkFun BME280 - Temperature, Humidity, Barometric Pressure, and Altitude
  isBME280();

  // SparkFun CCS811 - eCO2 & tVOC
  isCCS811();

  // Accelerometer and Gyroscopes
  isIMU();

  // Magnetometer
  isMag();

  // Barometer
  isBarometer();

  // isGPS
  isGPS();

  // Delay 1 sec
  delay(1000);

}

getAccelGyro.ino

// Accelerometer and Gyroscopes
// Setup IMU
void setupIMU() {

  // Setup IMU
  imu.init();
  // Default
  imu.enableDefault();
  
}
// Accelerometer and Gyroscopes
void isIMU() {

  // Accelerometer and Gyroscopes
  imu.read();
  // Accelerometer x, y, z
  imuAX = imu.a.x;
  imuAY = imu.a.y;
  imuAZ = imu.a.z;
  // Gyroscopes x, y, z
  imuGX = imu.g.x;
  imuGY = imu.g.y;
  imuGZ = imu.g.z;

  // FullString B
  FullStringB = "Accelerometer X = " + String(imuAX) + " Accelerometer Y = "
  + String(imuAY) + " Accelerometer Z = " + String(imuAZ) 
  + "\r\n";

  // FullStringB Bluetooth Serial + Serial
  for(int i = 0; i < FullStringB.length(); i++)
  {

    // Bluetooth Serial
    SerialBT.write(FullStringB.c_str()[i]);
    // Serial
    Serial.write(FullStringB.c_str()[i]);
    
  }

  // FullString C
  FullStringC = "Gyroscopes X = " + String(imuGX) + " Gyroscopes Y = "
  + String(imuGY) + " Gyroscopes Z = " + String(imuGZ) 
  + "\r\n";

  // FullStringC Bluetooth Serial + Serial
  for(int i = 0; i < FullStringC.length(); i++)
  {

    // Bluetooth Serial
    SerialBT.write(FullStringC.c_str()[i]);
    // Serial
    Serial.write(FullStringC.c_str()[i]);
    
  }

}

getBME280.ino

// SparkFun BME280 - Temperature, Humidity, Barometric Pressure, and Altitude
// isBME280 - Temperature, Humidity, Barometric Pressure, and Altitude
void isBME280(){

  // Temperature Celsius
  BMEtempC = myBME280.readTempC();
  // Humidity
  BMEhumid = myBME280.readFloatHumidity();
  // Barometric Pressure
  BMEpressure = myBME280.readFloatPressure();
  // Altitude Meters
  BMEaltitudeM = (myBME280.readFloatAltitudeMeters(), 2);

  // FullString
  FullString = "Temperature = " + String(BMEtempC,2) + " Humidity = "
  + String(BMEhumid,2) + " Barometric = " + String(BMEpressure,2) 
  + " Altitude Meters = " + String(BMEaltitudeM,2) + "\r\n";

  // FullString Bluetooth Serial + Serial
  for(int i = 0; i < FullString.length(); i++)
  {

    // Bluetooth Serial
    SerialBT.write(FullString.c_str()[i]);
    // Serial
    Serial.write(FullString.c_str()[i]);
    
  }

}

getBarometer.ino

// STMicroelectronics LPS25H digital barometer
// Setup Barometer
void isSetupBarometer(){

  // Setup Barometer
  ps.init();
  // Default
  ps.enableDefault();
  
}
// Barometer
void isBarometer(){

  // Barometer
  pressure = ps.readPressureMillibars();
  // Altitude Meters
  altitude = ps.pressureToAltitudeMeters(pressure);
  // Temperature Celsius
  temperature = ps.readTemperatureC();

  // FullStringF
  FullStringF = "Barometer = " + String(pressure,2) + " Altitude Meters = "
  + String(altitude,2) + " Temperature Celsius = "
  + String(temperature,2) + "\r\n";

  // FullStringF Bluetooth Serial + Serial
  for(int i = 0; i < FullStringF.length(); i++)
  {

    // Bluetooth Serial
    SerialBT.write(FullStringF.c_str()[i]);
    // Serial
    Serial.write(FullStringF.c_str()[i]);
    
  }
  
}

getCCS811.ino

// CCS811 - eCO2 & tVOC
// isCCS811 - eCO2 & tVOC
void isCCS811(){

  // This sends the temperature & humidity data to the CCS811
  myCCS811.setEnvironmentalData(BMEhumid, BMEtempC);

  // Calling this function updates the global tVOC and eCO2 variables
  myCCS811.readAlgorithmResults();

  // eCO2 Concentration
  CCS811CO2 = myCCS811.getCO2();
  
  // tVOC Concentration
  CCS811TVOC = myCCS811.getTVOC();

  // FullStringA
  FullStringA = "TVOCs = " + String(CCS811TVOC,2) + " eCO2 = "
  + String(CCS811CO2,2) + "\r\n";

  // FullStringA Bluetooth Serial + Serial
  for(int i = 0; i < FullStringA.length(); i++)
  {

    // Bluetooth Serial
    SerialBT.write(FullStringA.c_str()[i]);
    // Serial
    Serial.write(FullStringA.c_str()[i]);
    
  }

}

getGPS.ino

// GPS Receiver
// Setup GPS
void setupGPS() {

  // Setup GPS
  tGPS.begin(  9600 , SERIAL_8N1 , gpsRXPIN , gpsTXPIN );
  
}
// isGPS
void isGPS(){

  // Receives NEMA data from GPS receiver
  // This sketch displays information every time a new sentence is correctly encoded
  while ( tGPS.available() > 0)
    
    if (gps.encode( tGPS.read() ))
    {
     
       // GPS Vector Pointer Target
       displayInfo();
       // GPS Date, Time, Speed, Altitude
       displayDTS();
       
    }

  if (millis() > 5000 && gps.charsProcessed() < 10)
  {

     while(true);
    
  }

}
// GPS Vector Pointer Target
void displayInfo(){

  // Location
  if (gps.location.isValid())
  {
    
     // Latitude
     TargetLat = gps.location.lat();
     // Longitude
     TargetLon = gps.location.lng();
     // GPS Status 2
     GPSSt = "Yes";

     // FullStringG
     FullStringG = "Latitude = " + String(TargetLat) + " Longitude = "
     + String(TargetLon) + "\r\n";

     // FullStringG Bluetooth Serial + Serial
     for(int i = 0; i < FullStringG.length(); i++)
     {

       // Bluetooth Serial
       SerialBT.write(FullStringG.c_str()[i]);
       // Serial
       Serial.write(FullStringG.c_str()[i]);
    
     }
    
  }
  else
  {

     // GPS Status 0
     GPSSt = "No";
    
  }

}
// GPS Date, Time, Speed, Altitude
void displayDTS(){

  // Date
  TargetDat = ""; 
  if (gps.date.isValid())
  {
    
     // Date
     // Year
     TargetDat += String(gps.date.year(), DEC);
     TargetDat += "/";
     // Month
     TargetDat += String(gps.date.month(), DEC);
     TargetDat += "/";
     // Day
     TargetDat += String(gps.date.day(), DEC);

     // FullStringH
     FullStringH = "Date = " + String(TargetDat) + "\r\n";

     // FullStringH Bluetooth Serial + Serial
     for(int i = 0; i < FullStringH.length(); i++)
     {

       // Bluetooth Serial
       SerialBT.write(FullStringH.c_str()[i]);
       // Serial
       Serial.write(FullStringH.c_str()[i]);
    
     }
    
  }

  // Time
  TargetTim = "";
  if (gps.time.isValid())
  {
    
     // Time
     // Hour
     TargetTim += String(gps.time.hour(), DEC);
     TargetTim += ":";
     // Minute
     TargetTim += String(gps.time.minute(), DEC);
     TargetTim += ":";
     // Secound
     TargetTim += String(gps.time.second(), DEC);

     // FullStringH
     FullStringH = "Time = " + String(TargetTim) + "\r\n";

     // FullStringH Bluetooth Serial + Serial
     for(int i = 0; i < FullStringH.length(); i++)
     {

       // Bluetooth Serial
       SerialBT.write(FullStringH.c_str()[i]);
       // Serial
       Serial.write(FullStringH.c_str()[i]);
    
     }
    
  }

  // Speed
  TargetSMS = "";
  TargetSKH = "";
  if (gps.speed.isValid())
  {
    
     // Speed
     // M/S
     int x = gps.speed.mps();
     TargetSMS = String( x, DEC);
     // Km/h
     int y = gps.speed.kmph();
     TargetSKH = String( y, DEC);

     // FullStringH
     FullStringH = "Speed = " + String(TargetSMS) + "\r\n";

     // FullStringH Bluetooth Serial + Serial
     for(int i = 0; i < FullStringH.length(); i++)
     {

       // Bluetooth Serial
       SerialBT.write(FullStringH.c_str()[i]);
       // Serial
       Serial.write(FullStringH.c_str()[i]);
    
     }

  }

  // Altitude
  TargetALT = "";
  if (gps.altitude.isValid())
  {
    
     // Altitude
     // Meters
     int z = gps.altitude.meters();
     TargetALT = String( z, DEC);

     // FullStringH
     FullStringH = "Altitude = " + String(TargetALT) + "\r\n";

     // FullStringH Bluetooth Serial + Serial
     for(int i = 0; i < FullStringH.length(); i++)
     {

       // Bluetooth Serial
       SerialBT.write(FullStringH.c_str()[i]);
       // Serial
       Serial.write(FullStringH.c_str()[i]);
    
     }

  }
 
}

getMagnetometer.ino

// Magnetometer
// Setup Magnetometer
void setupMag() {

  // Setup Magnetometer
  mag.init();
  // Default
  mag.enableDefault();
  
}
// Magnetometer
void isMag() {

  // Magnetometer
  mag.read();
  // Magnetometer x, y, z
  magX = mag.m.x;
  magY = mag.m.y;
  magZ = mag.m.z;

  // FullString D
  FullStringD = "Magnetometer X = " + String(magX) + " Magnetometer Y = "
  + String(magY) + " Magnetometer Z = " + String(magZ) 
  + "\r\n";

  // FullStringD Bluetooth Serial + Serial
  for(int i = 0; i < FullStringD.length(); i++)
  {

    // Bluetooth Serial
    SerialBT.write(FullStringD.c_str()[i]);
    // Serial
    Serial.write(FullStringD.c_str()[i]);
    
  }
  
}

setup.ino

// Setup
void setup()
{
  
  // Serial Begin
  Serial.begin(9600);
  Serial.println("Starting BLE work!");

  // Bluetooth Serial
  SerialBT.begin("Don Luc Electronics");
  Serial.println("Bluetooth Started! Ready to pair...");

  // Give display time to power on
  delay(100);
  
  // Wire - Inialize I2C Hardware
  Wire.begin();

  // Give display time to power on
  delay(100);

  // SparkFun BME280 - Temperature, Humidity, Barometric Pressure, and Altitude 
  myBME280.begin();

  // CCS811 - eCO2 & tVOC
  myCCS811.begin();

  // Setup IMU
  setupIMU();

  // Setup Magnetometer
  setupMag();

  // Setup Barometer
  isSetupBarometer();

  // GPS Receiver
  // Setup GPS
  setupGPS();
  
  // Initialize digital pin LED_BUILTIN as an output
  pinMode(LED_BUILTIN, OUTPUT);
  // Turn the LED on HIGH
  digitalWrite(LED_BUILTIN, HIGH);

}

——

Arduino Uno

RX – Digital 3
TX – Digital 2
VIN – +3.3V
GND – GND

——

DL2307Mk05pr.ino

/* ***** Don Luc Electronics © *****
Software Version Information
Project #26 - Radio Frequency - Bluetooth GPS Receiver GP-20U7 - Mk24
26-24
DL2307Mk05pr.ino
1 x Arduino Uno
1 x SparkFun RedBoard Qwiic
1 x SparkFun Bluetooth Mate Silver
1 x SparkFun BME280 - Temperature, Humidity, Barometric Pressure, and Altitude
1 x SparkFun Air Quality Breakout - CCS811
1 x Pololu AltIMU-10 v5
1 x GPS Receiver - GP-20U7
1 x Lithium Ion Battery - 85mAh
2 x SparkFun Cerberus USB Cable
*/

// Include the Library Code
// Software Serial
#include <SoftwareSerial.h>

// Software Serial
// TX-O pin of bluetooth mate, Arduino D2
int bluetoothTx = 2;
// RX-I pin of bluetooth mate, Arduino D3
int bluetoothRx = 3;
// Bluetooth
SoftwareSerial bluetooth(bluetoothTx, bluetoothRx);
// BTA
//String BTA = "0006664FDC9E"; 

// Software Version Information
String sver = "26-24";

void loop() {

  // isBluetooth
  isBluetooth();
 
}

getBluetooth.ino

// Bluetooth
// Setup Bluetooth
void isSetupBluetooth(){

  // Setup Bluetooth
  // Begin the serial monitor at 9600bps
  Serial.begin(9600);
  // Bluetooth
  // The Bluetooth Mate defaults to 115200bps
  bluetooth.begin(115200);
  // Print three times individually
  bluetooth.print("$");
  bluetooth.print("$");
  bluetooth.print("$");
  // Enter command mode
  // Short delay, wait for the Mate to send back CMD
  delay(100);
  // Temporarily Change the baudrate to 9600, no parity
  bluetooth.println("U,9600,N");
  // 115200 can be too fast at times for NewSoftSerial to relay the data reliably
  // Start bluetooth serial at 9600
  bluetooth.begin(9600);
  
}
// isBluetooth
void isBluetooth() {

  // If the bluetooth sent any characters
  if(bluetooth.available())
  {
    
    // Send any characters the bluetooth prints to the serial monitor
    Serial.print((char)bluetooth.read());
    
  }
  // If stuff was typed in the serial monitor
  if(Serial.available())
  {
    
    // Send any characters the Serial monitor prints to the bluetooth
    bluetooth.print((char)Serial.read());
    
  }

}

setup.ino

// Setup
void setup()
{
  
  // Setup Bluetooth
  isSetupBluetooth();

}

——

People can contact us: https://www.donluc.com/?page_id=1927

Technology Experience

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https://www.donluc.com/luc/

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Don Luc

Posted in #26 - Radio Frequency, Arduino, Consultant, Digital Electronics, ESP32, Fritzing, Microcontrollers, Program, Program Arduino, Program ESP32, Projects, SparkFun | Tagged Accelerometer, Arduino, Bluetooth, Bluetooth GPS Receiver GP-20U7, Components, Consultant, Electronics, ESP32, Fritzing, GPS Receiver, Gyroscope, Magnetometer, Microcontrollers, Programming, Programming ESP32, Project, Radio Frequency, SparkFun, Technology, Video Blog, Vlog

Project #26 – Radio Frequency – Bluetooth GPS Receiver GP-20U7 – Mk24

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