#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
// ===== OLED =====
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 32
#define OLED_ADDR 0x3C
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
// ===== PINS =====
#define BUTTON1 8
#define BUTTON2 7
#define LED1 3
#define LED2 6
#define LED3 9
// ===== LED sekvens =====
int step = 0;
unsigned long lastChange = 0;
const int interval = 500; // ms
void setup() {
Serial.begin(115200);
// Knappar
pinMode(BUTTON1, INPUT_PULLUP);
pinMode(BUTTON2, INPUT_PULLUP);
// LEDs
pinMode(LED1, OUTPUT);
pinMode(LED2, OUTPUT);
pinMode(LED3, OUTPUT);
// I2C (DINA PINS – oförändrade)
Wire.setSDA(20);
Wire.setSCL(21);
Wire.begin();
// Display
if (!display.begin(SSD1306_SWITCHCAPVCC, OLED_ADDR)) {
Serial.println("OLED fel!");
}
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(SSD1306_WHITE);
}
void loop() {
// ===== Läs knappar =====
bool b1 = (digitalRead(BUTTON1) == LOW);
bool b2 = (digitalRead(BUTTON2) == LOW);
// ===== LED sekvens =====
if (millis() - lastChange > interval) {
lastChange = millis();
step++;
if (step > 6) step = 0;
}
// Släck alla först
digitalWrite(LED1, LOW);
digitalWrite(LED2, LOW);
digitalWrite(LED3, LOW);
// Tänd enligt steg
switch (step) {
case 0: digitalWrite(LED1, HIGH); break;
case 1: digitalWrite(LED2, HIGH); break;
case 2: digitalWrite(LED3, HIGH); break;
case 3: digitalWrite(LED1, HIGH); digitalWrite(LED2, HIGH); break;
case 4: digitalWrite(LED2, HIGH); digitalWrite(LED3, HIGH); break;
case 5: digitalWrite(LED1, HIGH); digitalWrite(LED3, HIGH); break;
case 6: digitalWrite(LED1, HIGH); digitalWrite(LED2, HIGH); digitalWrite(LED3, HIGH); break;
}
// ===== Display =====
display.clearDisplay();
display.setCursor(0, 0);
display.println("Raspberry Pi Pico Test");
display.setCursor(0, 12);
display.print("Button 1: ");
display.println(b1 ? "Down" : "Up");
display.setCursor(0, 22);
display.print("Button 2: ");
display.println(b2 ? "Down" : "Up");
display.display();
delay(50);
}Loading
ssd1306
ssd1306