#ifndef CONFIG_H
#define CONFIG_H

// GPIO Pin Assignments (RP2040-Zero)
#define PIN_I2C_SDA     0   // OLED SDA
#define PIN_I2C_SCL     1   // OLED SCL
#define PIN_TRIG_OUT    2   // Trigger output
#define PIN_RETURN_IN   3   // Return input
#define PIN_BUTTON      4   // Mode button

// I2C Configuration
#define I2C_PORT        i2c0
#define I2C_FREQ        400000  // 400 kHz

// OLED Display (SSD1306 128x32)
#define OLED_ADDR       0x3C
#define OLED_WIDTH      128
#define OLED_HEIGHT     32

// Timing Configuration
#define TRIGGER_PULSE_MS    5       // Trigger pulse width
#define MEASURE_TIMEOUT_MS  1000    // Max latency measurement
#define DEBOUNCE_MS         50      // Button debounce
#define CONTINUOUS_INTERVAL_MS 500  // Interval for continuous mode

// Display
#define DISPLAY_UPDATE_MS   100     // Display refresh rate

// Statistics
#define STATS_SAMPLES       10      // Rolling average sample count

#endif // CONFIG_H