Can you help me with coding my XIAO Rp2040?

ChatGPT said: Memory updated Of course! What are you trying to code on your XIAO RP2040? Are you using CircuitPython, MicroPython, or C/C++ with the Arduino or Raspberry Pi SDK?

You said: I'm using Arduino code

ChatGPT said: Memory updated Got it! What do you need help with? Are you working on a specific project, troubleshooting an issue, or just getting started with coding for the XIAO RP2040 in Arduino?

You said: I'm trying to wire a Rotary Encoder to my RP2040.

ChatGPT said: Memory updated Nice! Are you using a standard rotary encoder with three signal pins (CLK, DT, and SW) or something different? Also, do you need help with wiring, code, or both?

You said: I'm using one that has GND, +, SW, DT, and CLK

ChatGPT said: Great! Your rotary encoder has the following pins: GND → Connect to GND on the XIAO RP2040 + (VCC) → Connect to 3.3V on the XIAO RP2040 (since it's a 3.3V board) SW (Button Switch) → Connect to a digital input pin (with a pull-up resistor if needed) DT (Data Pin) → Connect to a digital input pin CLK (Clock Pin) → Connect to a digital input pin Wiring Example (to XIAO RP2040): GND → GND + → 3V3 SW → Pin D2 DT → Pin D3 CLK → Pin D4 Would you like an example Arduino code snippet for reading rotation and button presses?

You said: My digital pins are D0, D1, and D2

ChatGPT said: Got it! Here's how you can wire your rotary encoder to the XIAO RP2040 using D0, D1, and D2: Wiring: GND → GND + → 3V3 SW (Button Switch) → D2 DT (Data Pin) → D1 CLK (Clock Pin) → D0 Example Arduino Code: This code will detect rotation direction

        
        #define CLK 0  // Clock pin
        #define DT 1   // Data pin
        
        int lastStateCLK;
        int currentStateCLK;
        
        void setup() {
            pinMode(CLK, INPUT_PULLUP);
            pinMode(DT, INPUT_PULLUP);
            
            Serial.begin(115200);
            
            lastStateCLK = digitalRead(CLK);  // Read initial state of CLK
        }
        
        void loop() {
            currentStateCLK = digitalRead(CLK);
        
            // Check if state changed
            if (currentStateCLK != lastStateCLK) {
                if (digitalRead(DT) != currentStateCLK) {
                    Serial.println("Rotated Clockwise");
                } else {
                    Serial.println("Rotated Counterclockwise");
                }
            }
            
            lastStateCLK = currentStateCLK;
        }
        
        

This will only detect rotation without handling the button press. Let me know if you need further tweaks! 🚀