46 lines
979 B
C
46 lines
979 B
C
/*
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* MTG RFID Companion - EC11 rotary encoder driver
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*
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* Phase 7 Step 7.1: Interrupt-driven quadrature decode on GPIO CLK/DT with
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* a debounced push button on SW (active low).
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*/
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#pragma once
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#include "esp_err.h"
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#include <stdbool.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Install GPIO ISR service and configure encoder pins.
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*/
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esp_err_t encoder_init(void);
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/**
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* @brief True if the encoder has rotated since the last check.
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*/
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bool encoder_has_delta(void);
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/**
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* @brief Return the accumulated rotation steps and reset it.
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* Positive = clockwise, negative = counter-clockwise (configurable).
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*/
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int32_t encoder_get_delta_and_reset(void);
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/**
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* @brief Get current quadrature steps per mechanical detent tick (2 or 4).
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*/
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int8_t encoder_get_steps_per_detent(void);
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/**
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* @brief Set quadrature steps per mechanical detent tick (2 or 4).
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*/
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void encoder_set_steps_per_detent(int8_t steps);
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#ifdef __cplusplus
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}
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#endif |