2022-12-31 14:42:31 +00:00
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/******************************************************************************
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* @brief 按键任务(演示key模块使用)
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*
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* Copyright (c) 2020, <morro_luo@163.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2020/07/03 Morro
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******************************************************************************/
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#include "led.h"
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#include "key.h"
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#include "module.h"
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#include "public.h"
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static key_t key; /*按键定义*/
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static void key_event(int type, unsigned int duration);
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/*
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* @brief 读取按键电平状态
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* @return 0 | 1
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*/
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static int readkey(void)
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{
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return GPIO_ReadInputDataBit(GPIOC, GPIO_Pin_4) == 0;
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}
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/*
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* @brief 按键 io初始化
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* PC4 -> key;
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* @return none
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*/
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static void key_io_init(void)
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{
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gpio_conf(GPIOC, GPIO_Mode_IN, GPIO_PuPd_UP, GPIO_Pin_4);
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key_create(&key, readkey, key_event); /*创建按键*/
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}
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/*
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* @brief 按键事件处理
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* @return type -
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*/
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static void key_event(int type, unsigned int duration)
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{
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if (type == KEY_PRESS)
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led_ctrl(LED_TYPE_GREEN, LED_MODE_FAST, 3); /*短按,绿灯闪3下*/
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else if (type == KEY_LONG_DOWN)
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led_ctrl(LED_TYPE_GREEN, LED_MODE_ON, 0); /*长按,绿灯常亮*/
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else if (type == KEY_LONG_UP)
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led_ctrl(LED_TYPE_GREEN, LED_MODE_OFF, 0); /*长按后释放,绿灯关闭*/
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}
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driver_init("key", key_io_init); /*按键初始化*/
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task_register("key", key_scan_process, 20); /*按键扫描任务, 20ms轮询1次*/
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