Naldi Carrión

Group Assignment

demonstrate and compare the toolchains and development workflows for alternative embedded architectures

Please for group assignment details visit Anderson Zelarayan Web Page.

Individual Assignment

Write a program for a microcontroller development board to interact (with local input &/or output devices) and communicate (with remote wired or wireless devices)

I worked with the board I developed in week 4th and use Module XIAO RP2040.

PCB Programing

First I wanted to explore more programing options using Arduino IDE. You can download the program from here

LED Blinking

1. We need first to prepare the Arduino IDE to work with XIAO RP2040
2. We need to add Seeed Studio XIAO RP2040 board package to Arduino IDE's preferences (See photo).
3. Like recomended on Seeed Studio and install earlephilhower package.


4. We need to go to Board Manager and install Raspberry Pi Pico/RP2040.
5. Then, we need to click on Tools, board board manager. In that way Arduino IDE will recognise the XIAO RP2040


6. We need to wrote a small program in Arduino to test the board. I decided to develop a simple program to turn LED on and off



// Blink
// Define pin numbers
const int LedPin =  D0;  // the number of the LED pin
	
// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LedPin as an output.
  pinMode(LedPin, OUTPUT);
}
	
// the loop function runs over and over again forever
void loop() {
  digitalWrite(LedPin, HIGH);  // turn the LED on (HIGH is the voltage level)
  delay(100);                      // wait for a second
  digitalWrite(LedPin, LOW);   // turn the LED off by making the voltage LOW
  delay(100);                      // wait for a second
}



7. The following video shows how the led goes on and off

LED Activated by a Button

	// Define pin numbers
	const int buttonPin = D1; // the number of the pushbutton pin
	const int ledPin =  D0;  // the number of the LED pin
	
	// Variables will change:
	int buttonState = 0; // variable for reading the pushbutton status
	
	void setup() {
	  // Initialize the LED pin as an output:
	  pinMode(ledPin, OUTPUT);
	  // Initialize the pushbutton pin as an input with internal pull-up resistor:
	  pinMode(buttonPin, INPUT_PULLUP);
	}
	
	void loop() {
	  // Read the state of the pushbutton value:
	  buttonState = digitalRead(buttonPin);
	
	  // Check if the pushbutton is pressed.
	  // If it is, the buttonState is LOW:
	  if (buttonState == LOW) {
		// Turn LED on:
		digitalWrite(ledPin, LOW);
	  } else {
		// Turn LED off:
		digitalWrite(ledPin, HIGH);
	  }
	}

LED Activated by a Button While sending information through Serial Monitor

	// Define pin numbers
	const int buttonPin = D1; // the number of the pushbutton pin
	const int ledPin =  D0;  // the number of the LED pin
	
	// Variables will change:
	int buttonState = 0; // variable for reading the pushbutton status
	
	void setup() {
		Serial.begin(9600);
		// Initialize the LED pin as an output:
	  pinMode(ledPin, OUTPUT);
	  // Initialize the pushbutton pin as an input with internal pull-up resistor:
	  pinMode(buttonPin, INPUT_PULLUP);
	}
	
	void loop() {
	  // Read the state of the pushbutton value:
	  buttonState = digitalRead(buttonPin);
	  Serial.print("button state: ");
  	  Serial.println (buttonState);

	
	  // Check if the pushbutton is pressed.
	  // If it is, the buttonState is LOW:
	  if (buttonState == LOW) {
		// Turn LED on:
		digitalWrite(ledPin, LOW);
	  } else {
		// Turn LED off:
		digitalWrite(ledPin, HIGH);
	  }
	}

You can get access to the Arduino code here.