RP2040

Work Process Detail

1. Understanding the XIAO RP2040 Architecture

I started by reviewing the XIAO RP2040 specifications from the Seeed Studio documentation, learning about:

Specification​

This gave me a foundational understanding of how the microcontroller operates before programming it.

2. Blinking an LED Using Arduino IDE

I followed the official Arduino setup guide and performed the following steps:

✅ Installed the necessary board support package for RP2040 in Arduino IDE.

✅ Connected the XIAO RP2040 via USB-C and selected the correct board.

✅ Uploaded the Blink Sketch to toggle the onboard LED every second.

Code Used in Arduino IDE (C++)

void setup() {
  pinMode(LED_BUILTIN, OUTPUT); // Set onboard LED as output
}

void loop() {
  digitalWrite(LED_BUILTIN, HIGH); // Turn LED on
  delay(1000); // Wait for a second
  digitalWrite(LED_BUILTIN, LOW); // Turn LED off
  delay(1000); // Wait for a second
}

✅ The LED blinked as expected, confirming that the setup was successful.

3. Blinking an LED Using MicroPython (Thonny IDE)

Next, I followed the MicroPython setup guide and tested the same LED blink functionality using Thonny IDE.

✅ Flashed the MicroPython firmware onto the XIAO RP2040.

✅ Installed Thonny IDE and connected the board via USB.

✅ Wrote and executed the Blink script in Python.

Code Used in MicroPython (Python)

from machine import Pin, Timer
 
led = Pin(25, Pin.OUT)
Counter = 0
Fun_Num = 0
 
def fun(tim):
    global Counter
    Counter = Counter + 1
    print(Counter)
    led.value(Counter%2)
 
tim = Timer(-1)
tim.init(period=1000, mode=Timer.PERIODIC, callback=fun)

✅ The LED blinked with a counter successfully, confirming that MicroPython was set up correctly.