ESP32 LoRa with Display - 863MHz-928MHz SX1276 Component Documentation
The ESP32 LoRa with Display is a versatile Internet of Things (IoT) component that combines the powerful ESP32 microcontroller with a LoRa transceiver (SX1276) and a display module. This component operates on the 863MHz-928MHz frequency band, making it suitable for a wide range of IoT applications, including wireless sensor networks, smart cities, and industrial automation.
Microcontroller: ESP32 dual-core 32-bit LX6 microprocessor
LoRa Transceiver: SX1276, 863MHz-928MHz frequency band
Display Module: [Insert display module specifications, e.g., LCD, OLED, resolution]
Interfaces: Wi-Fi, Bluetooth, LoRa, UART, SPI, I2C, I2S
Power Supply: 3.3V, 5V tolerant I/O
Here are three code examples that demonstrate how to use the ESP32 LoRa with Display component in various contexts:
Example 1: LoRa Point-to-Point Communication
This example demonstrates how to use the ESP32 LoRa with Display to establish a point-to-point communication between two devices.
Sender Code (ESP32 LoRa with Display)
```c
#include <SPI.h>
#include <LoRa.h>
#define SS_PIN 5
#define RST_PIN 14
#define DI0_PIN 2
void setup() {
Serial.begin(115200);
// Initialize LoRa module
LoRa.setPins(SS_PIN, RST_PIN, DI0_PIN);
LoRa.begin(868E6); // 863MHz-928MHz frequency band
// Display initialization
// [Insert display initialization code]
}
void loop() {
// Send packet
LoRa.beginPacket();
LoRa.print("Hello, receiver!");
LoRa.endPacket();
// Display packet sent message
// [Insert display code to show "Packet sent"]
delay(5000);
}
```
Receiver Code (ESP32 LoRa with Display)
```c
#include <SPI.h>
#include <LoRa.h>
#define SS_PIN 5
#define RST_PIN 14
#define DI0_PIN 2
void setup() {
Serial.begin(115200);
// Initialize LoRa module
LoRa.setPins(SS_PIN, RST_PIN, DI0_PIN);
LoRa.begin(868E6); // 863MHz-928MHz frequency band
// Display initialization
// [Insert display initialization code]
}
void loop() {
// Receive packet
int packetSize = LoRa.parsePacket();
if (packetSize) {
String message = "";
while (LoRa.available()) {
message += (char)LoRa.read();
}
Serial.println(message);
// Display received message
// [Insert display code to show received message]
}
delay(5000);
}
```
Example 2: Wi-Fi and LoRa Coexistence
This example demonstrates how to use the ESP32 LoRa with Display to establish a Wi-Fi connection and send data over LoRa simultaneously.
Code
```c
#include <WiFi.h>
#include <SPI.h>
#include <LoRa.h>
#define SS_PIN 5
#define RST_PIN 14
#define DI0_PIN 2
#define WIFI_SSID "your_wifi_ssid"
#define WIFI_PASSWORD "your_wifi_password"
void setup() {
Serial.begin(115200);
// Initialize Wi-Fi
WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to Wi-Fi...");
}
Serial.println("Connected to Wi-Fi");
// Initialize LoRa module
LoRa.setPins(SS_PIN, RST_PIN, DI0_PIN);
LoRa.begin(868E6); // 863MHz-928MHz frequency band
// Display initialization
// [Insert display initialization code]
}
void loop() {
// Send data over Wi-Fi
WiFiClient client;
client.setServer("http://example.com", 80);
client.println("GET /data HTTP/1.1");
client.println("Host: example.com");
client.println("Connection: close");
client.println();
// Send packet over LoRa
LoRa.beginPacket();
LoRa.print("Hello, receiver!");
LoRa.endPacket();
// Display sent message
// [Insert display code to show "Packet sent"]
delay(5000);
}
```
Example 3: OLED Display Interface
This example demonstrates how to use the ESP32 LoRa with Display to display sensor data on the integrated OLED display.
Code
```c
#include <Wire.h>
#include <SPI.h>
#include <LoRa.h>
#include <Adafruit_SSD1306.h>
#define OLED_SDA_PIN 4
#define OLED_SCL_PIN 15
#define OLED_RST_PIN 16
#define TEMP_SENSOR_PIN A0
Adafruit_SSD1306 display(OLED_SDA_PIN, OLED_SCL_PIN, OLED_RST_PIN);
void setup() {
Serial.begin(115200);
// Initialize OLED display
display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
display.clearDisplay();
display.setTextColor(SSD1306_WHITE);
display.setTextSize(1);
// Initialize LoRa module
LoRa.setPins(SS_PIN, RST_PIN, DI0_PIN);
LoRa.begin(868E6); // 863MHz-928MHz frequency band
// Initialize temperature sensor
pinMode(TEMP_SENSOR_PIN, INPUT);
}
void loop() {
// Read temperature sensor value
int sensorValue = analogRead(TEMP_SENSOR_PIN);
float temperature = (sensorValue 3.3) / 1024;
// Display temperature value on OLED display
display.clearDisplay();
display.setCursor(0, 0);
display.print("Temperature: ");
display.print(temperature);
display.print(" C");
display.display();
Note: The above examples are for demonstration purposes only and may require modifications to work with your specific use case. Additionally, ensure that you have the necessary libraries installed and configured properly.
