How to Use E72-2G4M20S1E (CC2652P): Examples, Pinouts, and Specs

Introduction

The E72-2G4M20S1E is a compact, low-power wireless module developed by Ebyte Electronic Technology Co., Ltd.. It is based on the CC2652P chip from Texas Instruments, which integrates a powerful ARM Cortex-M4F processor and a high-performance RF core. This module supports multiple wireless communication protocols, including Bluetooth Low Energy (BLE), Zigbee, and Thread, making it ideal for Internet of Things (IoT) applications.

Explore Projects Built with E72-2G4M20S1E (CC2652P)

Use Cirkit Designer to design, explore, and prototype these projects online. Some projects support real-time simulation. Click "Open Project" to start designing instantly!

Lilygo 7670e-Based Smart Interface with LCD Display and Keypad

This circuit features a Lilygo 7670e microcontroller interfaced with a 16x2 I2C LCD for display, a 4X4 membrane matrix keypad for input, and an arcade button for additional control. It also includes a 4G antenna and a GPS antenna for communication and location tracking capabilities.

Open Project in Cirkit Designer

Cellular-Enabled IoT Device with Real-Time Clock and Power Management

This circuit features a LilyGo-SIM7000G module for cellular communication and GPS functionality, interfaced with an RTC DS3231 for real-time clock capabilities. It includes voltage sensing through two voltage sensor modules, and uses an 8-channel opto-coupler for isolating different parts of the circuit. Power management is handled by a buck converter connected to a DC power source and batteries, with a fuse for protection and a rocker switch for on/off control. Additionally, there's an LED for indication purposes.

Open Project in Cirkit Designer

Battery-Powered Emergency Alert System with NUCLEO-F072RB, SIM800L, and GPS NEO 6M

This circuit is an emergency alert system that uses a NUCLEO-F072RB microcontroller to send SMS alerts and make calls via a SIM800L GSM module, while obtaining location data from a GPS NEO 6M module. The system is powered by a Li-ion battery and includes a TP4056 module for battery charging and protection, with a rocker switch to control power to the microcontroller.

Open Project in Cirkit Designer

ESP32-Based Cellular and GPS Tracking System with User Interface

This circuit features an ESP32 microcontroller interfaced with a SIM 800L GSM module for cellular communication and a Neo 6M GPS module for location tracking. A voltage regulator is used to maintain a stable voltage supply from a polymer lithium-ion battery to the GSM, GPS, and ESP32 modules. Additionally, the circuit includes a pushbutton to trigger inputs and an LED with a current-limiting resistor, likely for status indication.

Open Project in Cirkit Designer

Common Applications and Use Cases

• Smart Home Devices: Zigbee-based smart lighting, thermostats, and security systems.
• Industrial IoT: Wireless sensor networks and industrial automation.
• Wearable Devices: BLE-enabled fitness trackers and health monitoring systems.
• Wireless Communication Gateways: Zigbee-to-Wi-Fi or BLE-to-Wi-Fi bridges.
• Mesh Networking: Applications requiring robust and scalable wireless communication.

Technical Specifications

Key Technical Details

Pin Configuration and Descriptions

The E72-2G4M20S1E module has 32 pins. Below is the pinout description:

Note: For detailed pin mapping and alternate functions, refer to the official datasheet.

Usage Instructions

How to Use the Component in a Circuit

1. Power Supply: Connect the VCC pin to a regulated power source (1.8V to 3.8V) and GND to ground.
2. Antenna Connection: Use the onboard PCB antenna or connect an external antenna via the IPEX connector for better range.
3. Programming and Debugging: Use the SWD_CLK and SWD_IO pins to program the module using a compatible debugger (e.g., J-Link or XDS110).
4. GPIO Configuration: Configure the DIO pins as needed for your application (e.g., input, output, or alternate functions).
5. Protocol Selection: Use the appropriate firmware to enable BLE, Zigbee, or Thread communication.

Important Considerations and Best Practices

• Power Supply Stability: Ensure a stable power supply with minimal noise to avoid communication issues.
• Antenna Placement: For optimal RF performance, place the antenna away from metal objects and other sources of interference.
• Firmware Updates: Use the latest firmware provided by Ebyte or Texas Instruments to ensure compatibility and performance.
• Heat Dissipation: If operating at high output power (+20 dBm), ensure proper heat dissipation to avoid thermal issues.

Example: Using with Arduino UNO (BLE Communication)

Below is an example of how to use the E72-2G4M20S1E module with an Arduino UNO for BLE communication.

Circuit Connection

Arduino Code

#include <SoftwareSerial.h>

// Define RX and TX pins for communication with the module
SoftwareSerial BLEModule(0, 1); // RX = Pin 0, TX = Pin 1

void setup() {
  // Initialize serial communication with the module
  BLEModule.begin(9600); 
  Serial.begin(9600); // For debugging via Serial Monitor

  // Send initialization command to the module
  BLEModule.println("AT+RESET"); 
  delay(1000); // Wait for the module to reset
  Serial.println("Module initialized.");
}

void loop() {
  // Check if data is available from the module
  if (BLEModule.available()) {
    String data = BLEModule.readString();
    Serial.println("Received from module: " + data);
  }

  // Send data to the module
  BLEModule.println("Hello from Arduino!");
  delay(2000); // Wait 2 seconds before sending again
}

Note: Replace the AT+RESET command with the appropriate AT commands for your application.

Troubleshooting and FAQs

Common Issues and Solutions

1. No Communication with the Module:

   • Cause: Incorrect wiring or baud rate mismatch.
   • Solution: Double-check the connections and ensure the baud rate matches the module's configuration.

2. Poor RF Performance:

   • Cause: Antenna placement or interference.
   • Solution: Reposition the antenna and ensure it is not obstructed by metal objects.

3. Module Overheating:

   • Cause: High output power without proper heat dissipation.
   • Solution: Reduce the output power or improve heat dissipation.

4. Firmware Update Fails:

   • Cause: Incorrect programming tool or connection.
   • Solution: Use a compatible debugger and verify the SWD connections.

FAQs

• Q: Can the module operate on 5V?

  • A: No, the module operates within a voltage range of 1.8V to 3.8V. Use a voltage regulator if needed.

• Q: Does the module support Wi-Fi?

  • A: No, the module supports BLE, Zigbee, and Thread but not Wi-Fi.

• Q: How do I switch between BLE and Zigbee?

  • A: The communication protocol is determined by the firmware. Flash the appropriate firmware to switch protocols.

• Q: Can I use this module for mesh networking?

  • A: Yes, the module supports Zigbee and Thread, which are ideal for mesh networking applications.