Hi All,
I have tried the Code below, but can’t seem to connect the server, I am using a Blue Host Domain but somehow it keeps “failing” to connect, any ideas where I am going wrong?, it works 100% with Wi-Fi
#include <Arduino.h>
// Your GPRS credentials (leave empty, if not needed)
const char apn[] = “iphone.vodacom.za”; // APN (example: internet.vodafone.pt) use https://wiki.apnchanger.org
const char gprsUser[] = “”; // GPRS User
const char gprsPass[] = “”; // GPRS Password
// SIM card PIN (leave empty, if not defined)
const char simPIN[] = “”;
// Server details
// The server variable can be just a domain name or it can have a subdomain. It depends on the service you are using
const char server[] = “https://xxxxxxxxxx/post-esp-data.php&#8221;; // domain name: example.com, maker.ifttt.com, etc
const char resource[] = “/post-esp-data.php”; // resource path, for example: /post-data.php
const int port = 443; // server port number
#define MODEM_PWKEY 33
#define MODEM_TX 16
#define MODEM_RX 17
#define I2C_SDA 21
#define I2C_SCL 22
// Set serial for debug console (to Serial Monitor, default speed 115200)
#define SerialMon Serial
// Set serial for AT commands (to SIM800 module)
#define SerialAT Serial1
// Configure TinyGSM library
#define TINY_GSM_MODEM_SIM800 // Modem is SIM800
#define TINY_GSM_RX_BUFFER 1024 // Set RX buffer to 1Kb
// Define the serial console for debug prints, if needed
//#define DUMP_AT_COMMANDS
#include <Wire.h>
#include <TinyGsmClient.h>
#include <HTTPClient.h>
#ifdef DUMP_AT_COMMANDS
#include <StreamDebugger.h>
StreamDebugger debugger(SerialAT, SerialMon);
TinyGsm modem(debugger);
#else
TinyGsm modem(SerialAT);
#endif
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>
Adafruit_BME280 bme;
// TinyGSM Client for Internet connection
TinyGsmClient client(modem);
String apiKeyValue = “tPmAT5Ab3j7F9”;
String sensorName = “BME280”;
String sensorLocation = “Repro Office”;
#define uS_TO_S_FACTOR 1000000UL /* Conversion factor for micro seconds to seconds */
#define TIME_TO_SLEEP 36 /* Time ESP32 will go to sleep (in seconds) 3600 seconds = 1 hour */
void setup() {
// Set serial monitor debugging window baud rate to 115200
SerialMon.begin(115200);
// Set modem reset, enable, power pins
pinMode(MODEM_PWKEY, OUTPUT);
digitalWrite(MODEM_PWKEY, LOW);
delay (1000);
digitalWrite(MODEM_PWKEY, HIGH);
SerialAT.begin(115200, SERIAL_8N1, MODEM_RX, MODEM_TX);
delay(3000);
// Restart SIM800 module, it takes quite some time
// To skip it, call init() instead of restart()
SerialMon.println(“Initializing modem…”);
modem.restart();
// use modem.init() if you don’t need the complete restart
// Unlock your SIM card with a PIN if needed
if (strlen(simPIN) && modem.getSimStatus() != 3 ) {
modem.simUnlock(simPIN);
}

// You might need to change the BME280 I2C address, in our case it’s 0x76
if (!bme.begin(0x77)) {
Serial.println(“Could not find a valid BME280 sensor, check wiring!”);
while (1);
}
// Configure the wake up source as timer wake up
esp_sleep_enable_timer_wakeup(TIME_TO_SLEEP * uS_TO_S_FACTOR);
}
void loop() {
SerialMon.print(“Connecting to APN: “);
SerialMon.print(apn);
if (!modem.gprsConnect(apn, gprsUser, gprsPass)) {
SerialMon.println(” fail”);
}
else {
SerialMon.println(” OK”);

SerialMon.print(“Connecting to “);
SerialMon.print(server);
if (!client.connect(server, port)) {
SerialMon.println(” fail”);
}
else {
SerialMon.println(” OK”);

// Making an HTTP POST request
SerialMon.println(“Performing HTTP POST request…”);
// Prepare your HTTP POST request data (Temperature in Celsius degrees)
// Prepare your HTTP POST request data
String httpRequestData = “api_key=” + apiKeyValue + “&sensor=” + sensorName
+ “&location=” + sensorLocation + “&value1=” + String(bme.readTemperature())
+ “&value2=” + String(bme.readHumidity()) + “&value3=” + String(bme.readPressure()/100.0F) + “”;
Serial.print(“httpRequestData: “);
Serial.println(httpRequestData);

client.print(String(“POST “) + resource + ” HTTP/1.1\r\n”);
client.print(String(“Host: “) + server + “\r\n”);
client.println(“Connection: close”);
client.println(“Content-Type: application/x-www-form-urlencoded”);
client.print(“Content-Length: “);
client.println(httpRequestData.length());
client.println();
client.println(httpRequestData);
unsigned long timeout = millis();
while (client.connected() && millis() – timeout < 10000L) {
// Print available data (HTTP response from server)
while (client.available()) {
char c = client.read();
SerialMon.print(c);
timeout = millis();
}
}
SerialMon.println();

// Close client and disconnect
client.stop();
SerialMon.println(F(“Server disconnected”));
modem.gprsDisconnect();
SerialMon.println(F(“GPRS disconnected”));
}
}
// Put ESP32 into deep sleep mode (with timer wake up)
esp_deep_sleep_start();
}