release v0.9
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/**
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* @file key.h
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* @brief 单 GPIO 按键控制 (低电平有效, 软件消抖)
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*/
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#ifndef KEY_H
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#define KEY_H
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#include <stdbool.h>
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#include "driver/gpio.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 初始化按键 (内部上拉, 低电平有效)
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* @param gpio GPIO 引脚号, 如 GPIO_NUM_8
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*/
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void key_init(int gpio);
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/**
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* @brief 读取按键状态 (已消抖)
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* @return true=按下, false=释放
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*/
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bool key_is_pressed(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* KEY_H */
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