Arduino Due AT91SAM3X8E ARM Cortex-M3 Compatible Board Documentation
The Arduino Due is a microcontroller board based on the AT91SAM3X8E ARM Cortex-M3 processor. It is a high-performance board that offers advanced features such as a USB OTG interface, a 10-bit analog-to-digital converter (ADC), and multiple digital communication interfaces (e.g., SPI, I2C, I2S, UART). This documentation provides a comprehensive overview of the board's features, technical specifications, and code examples to help users get started with their projects.
Microcontroller: AT91SAM3X8E ARM Cortex-M3 processor
Clock Speed: 84 MHz
Memory:
+ Flash: 512 KB
+ SRAM: 96 KB
+ EEPROM: 16 KB
Analog-to-Digital Converter (ADC): 10-bit, 12 channels
Digital Communication Interfaces:
+ SPI
+ I2C
+ I2S
+ UART
USB Interface: USB OTG (On-The-Go) interface
Power Supply: 3.3V ( Vin pin), 5V (USB connector)
Operating Temperature: -40C to +85C
### Example 1: Blinking an LED using Digital Output
In this example, we will use the Arduino Due board to blink an LED connected to digital pin 13.
```c++
const int ledPin = 13; // Pin 13 for the LED
void setup() {
pinMode(ledPin, OUTPUT); // Set pin 13 as an output
}
void loop() {
digitalWrite(ledPin, HIGH); // Turn the LED on
delay(1000); // Wait for 1 second
digitalWrite(ledPin, LOW); // Turn the LED off
delay(1000); // Wait for 1 second
}
```
### Example 2: Reading Analog Input from a Potentiometer
In this example, we will use the Arduino Due board to read the analog value from a potentiometer connected to analog pin A0.
```c++
const int potPin = A0; // Pin A0 for the potentiometer
void setup() {
Serial.begin(9600); // Initialize serial communication
}
void loop() {
int sensorValue = analogRead(potPin); // Read the analog value from the potentiometer
Serial.print("Sensor value: ");
Serial.println(sensorValue); // Print the sensor value to the serial monitor
delay(100); // Wait for 100 milliseconds before taking the next reading
}
```
### Example 3: Communicating with an I2C Slave Device (Optional)
In this example, we will use the Arduino Due board to communicate with an I2C slave device, such as an LCD display or a temperature sensor.
```c++
#include <Wire.h> // Include the Wire library for I2C communication
#define SLAVE_ADDRESS 0x20 // Address of the I2C slave device
void setup() {
Wire.begin(); // Initialize the I2C interface
}
void loop() {
Wire.beginTransmission(SLAVE_ADDRESS); // Start transmission to the I2C slave device
Wire.write(0x01); // Send data byte (e.g., command or data)
Wire.endTransmission(); // End transmission
delay(100); // Wait for 100 milliseconds before sending the next command
}
```
Note: The above examples are just a few demonstrations of the Arduino Due board's capabilities. The board offers many more features and interfaces that can be used in various projects. For more information, please refer to the official Arduino documentation and the AT91SAM3X8E datasheet.
