Hi everyone, I have problem regarding to read one string in multiple string.
I have two ESP32 and LoRa which one as node/send signal and one as gateway/receive the signal.
For node, its not connected to wifi and just transmit the GPS data through esp32 and lora. While gateway connect to wifi and here I want to send to database. When gateway receive the signal, the serial print as below:
Longitude : 121.123
Latitude : 12.456
Altitude : 45.56
The gateway code as below:
#include <SPI.h>
#include <LoRa.h>
#include <WiFi.h> // connect wifi to esp32
#include <Firebase_ESP_Client.h> // interface esp32 with firebase
#include "addons/TokenHelper.h"
#include "addons/RTDBHelper.h"
#define WIFI_SSID ""
#define WIFI_PASSWORD ""
#define API_KEY ""
#define DATABASE_URL ""
//define the pins used by the transceiver module
#define ss 5
#define rst 14
#define dio0 2
FirebaseData fbdo; // handle data when there's change on specific database node path
FirebaseAuth auth; // need for authentication
FirebaseConfig config; // for configuration
// send data privilage variable is needed for milis function
// so that we can read and write to Firebase database at specified interval
// in a non-blocking way
unsigned long sendDataPrevMillis = 0;
bool signupOK = false; // flag variable sign up that use later when succesful sign up
void setup() {
//initialize Serial Monitor
Serial.begin(115200);
WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
Serial.print("Connecting to Wi-Fi");
while(WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(300);
}
Serial.println();
Serial.print("Connected with IP: ");
Serial.println(WiFi.localIP());
Serial.println();
config.api_key = API_KEY; // need to specify API key in Firebase configuration
config.database_url = DATABASE_URL;
if(Firebase.signUp(&config, &auth, "", "")) { // call Firebase sign up method and pass in Firebase config and auth
Serial.println("signUp OK"); // the empty denote for anonymous user sign up and give new anonymous every esp32 connect
signupOK = true;
}else{
Serial.printf("%s\n", config.signer.signupError.message.c_str()); // give rror message when fail sign up
}
config.token_status_callback = tokenStatusCallBack;
Firebase.begin(&config, &auth);
Firebase.reconnectWiFi(true);
while (!Serial);
Serial.println("LoRa Receiver");
//setup LoRa transceiver module
LoRa.setPins(ss, rst, dio0);
//replace the LoRa.begin(---E-) argument with your location's frequency
//433E6 for Asia
//866E6 for Europe
//915E6 for North America
while (!LoRa.begin(433E6)) {
Serial.println(".");
delay(500);
}
// Change sync word (0xF3) to match the receiver
// The sync word assures you don't get LoRa messages from other LoRa transceivers
// ranges from 0-0xFF
LoRa.setSyncWord(0xF3);
Serial.println("LoRa Initializing OK!");
}
void loop() {
// try to parse packet
int packetSize = LoRa.parsePacket();
if (packetSize) {
// received a packet
Serial.print("Received packet '");
// read packet
while (LoRa.available()) {
String LoRaData = LoRa.readString();
Serial.print(LoRaData);
if(Firebase.ready() && signupOK && (millis() - sendDataPrevMillis > 5000 || sendDataPrevMillis == 0)) {
sendDataPrevMillis = millis();
// -------------------- STORE sensor data to a RTDB
this become problem
}
}
// // print RSSI of packet
// Serial.print("' with RSSI ");
// Serial.println(LoRa.packetRssi());
}
}
LoRaData in code print the whole gps data as above but I need to specified for each data like latitude, longitude, altitude to follow as below code.
Code for sender as below:
#include <TinyGPS++.h> //Libary TinyGPS
// #include <SoftwareSerial.h> //Libarary bawaan
#include <Wire.h>
// #include <Adafruit_SSD1306.h>
#include <SPI.h>
#include <LoRa.h>
//define the pins used by the transceiver module
#define ss 5
#define rst 15
#define dio0 2
#define RXD2 16
#define TXD2 17
HardwareSerial neogps(1);
int GPSBaud = 9600; //Biarin default
int counter = 0;
// Membuat objek TinyGPS++
TinyGPSPlus gps;
// Mmebuat koneksi serial dengan nama "gpsSerial"
// SoftwareSerial gpsSerial(RXD2, TXD2);
void setup()
{
//Memulai koneksi serial pada baudrate 115200
Serial.begin(115200);
//Memulai koneksi serial dengan sensor
gpsSerial.begin(GPSBaud);
// //Begin serial communication Neo6mGPS
neogps.begin(9600, SERIAL_8N1, RXD2, TXD2);
while (!Serial);
Serial.println("LoRa Sender");
//setup LoRa transceiver module
LoRa.setPins(ss, rst, dio0);
//replace the LoRa.begin(---E-) argument with your location's frequency
//433E6 for Asia
//866E6 for Europe
//915E6 for North America
while (!LoRa.begin(433E6)) {
Serial.println("LoRa Error");
delay(500);
}
// Change sync word (0xF3) to match the receiver
// The sync word assures you don't get LoRa messages from other LoRa transceivers
// ranges from 0-0xFF
LoRa.setSyncWord(0xF3);
Serial.println("LoRa Initializing OK!");
}
void loop()
{
boolean newData = false;
for (unsigned long start = millis(); millis() - start < 1000;)
{
while (neogps.available())
{
if (gps.encode(neogps.read()))
{
newData = true;
}
}
}
//If newData is true
if(newData == true)
{
newData = false;
Serial.println(gps.satellites.value());
print_speed();
}
else
{
Serial.print("No Data");
}
//Membuat tampilan data ketika terdapat koneksi
// while (gpsSerial.available() > 0)
// if (gps.encode(gpsSerial.read()))
// if (gps.location.isValid())
// {
// Serial.println("Sending to LoRa");
// LoRa.beginPacket();
// LoRa.print("Lat: ");
// LoRa.print(gps.location.lat(), 6);
// LoRa.print("c");
// LoRa.print("Long: ");
// LoRa.print(gps.location.lng(), 6);
// Serial.println("Sent via LoRa");
// LoRa.endPacket();
// }
// else
// {
// LoRa.beginPacket();
// LoRa.println("Location: Not Available");
// LoRa.endPacket();
// }
// Jika dalam 5 detik tidak ada koneksi, maka akan muncul error "No GPS detected"
// Periksa sambungan dan reset arduino
if (millis() > 5000 && gps.charsProcessed() < 10)
{
Serial.println("No GPS detected");
while(true);
}
}
void print_speed()
{
if (gps.location.isValid() == 1)
{
Serial.println("Sending to LoRa");
LoRa.beginPacket();
LoRa.print("Lat: ");
LoRa.println(gps.location.lat(),6);
LoRa.print("Lng: ");
LoRa.println(gps.location.lng(),6);
LoRa.print("Speed: ");
LoRa.println(gps.speed.kmph());
LoRa.print("SAT:");
LoRa.println(gps.satellites.value());
LoRa.print("ALT:");
LoRa.println(gps.altitude.meters(), 0);
LoRa.endPacket();
}
else
{
LoRa.beginPacket();
LoRa.print("No Data");
LoRa.endPacket();
}
}
If I didn't separate the whole data will insert in one path database.
I want to look like below.
