#pragma once
#include <stdint.h>

// Optional accelerometer-driven orientation tracker. Returns 0..3 (quarter
// turns CW from default mounting). Boards without an IMU — or boards with
// rotation intentionally disabled, like AMOLED-1.8 fixed at 0° — return 0
// from imu_hal_rotation_quadrant() and no-op on init/tick.

void    imu_hal_init(void);
void    imu_hal_tick(void);
uint8_t imu_hal_rotation_quadrant(void);

// Raw accelerometer read in g-units (gravity = 1.0). Used by the tilt-dimmer
// screen to derive wrist pitch/roll. Returns true and fills x/y/z when a fresh
// sample is available; returns false (leaving the outputs untouched) on boards
// without an accelerometer or when no new data is ready yet.
bool    imu_hal_read_accel(float* x, float* y, float* z);