server-communication-esp32-lilyGo-T-Call

Arduino Project: HTTP GET Requests with a GSM Module

This Arduino project configures a GSM module to perform HTTP GET requests to a server.

Author

M'Crai Laydam

Date

08/04/2024

Hardware Used

• ESP32 TTGO T-Call
• GSM Module SIM800
• Additional sensors and modules (if needed)

Description

This code configures a GSM module to connect to a GPRS network and send an HTTP GET request to a specified server. The server's response information is displayed on the serial monitor.

Connection Diagram

Here are the essential connections for the project:

• GSM Module:

  • MODEM_RST: GPIO 5
  • MODEM_PWKEY: GPIO 4
  • MODEM_POWER_ON: GPIO 23
  • MODEM_TX: GPIO 27
  • MODEM_RX: GPIO 26

• I2C Pins (to keep the SIM800 module running):

  • I2C_SDA: GPIO 21
  • I2C_SCL: GPIO 22

• Outputs:

  • OUTPUT_1: GPIO 13
  • OUTPUT_2: GPIO 15

Installation

1. Hardware Setup:

   • Connect the GSM module to the ESP32 TTGO T-Call following the connections described above.

2. Software Setup:

   • Download and install the Arduino IDE if not already installed.
   • Add the TinyGsmClient library to your Arduino IDE. This can be done via the library manager in the IDE.
   • Open the .ino file of this project in the Arduino IDE.

3. APN Settings:

   • Make sure to update the APN settings in the code to match your service provider.

   const char apn[] = "internet"; // APN (ORANGE: orangenet, TELMA: internet, AIRTEL: internet)