138 lines
4.2 KiB
C
138 lines
4.2 KiB
C
/********************************** (C) COPYRIGHT *******************************
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* File Name : KEY.c
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* Author : WCH
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* Version : V1.2
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* Date : 2022/01/18
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* Description :
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*********************************************************************************
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* Attention: This software (modified or not) and binary are used for
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* microcontroller manufactured by Nanjing Qinheng Microelectronics.
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*******************************************************************************/
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/******************************************************************************/
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/* 头文件包含 */
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#include "HAL.h"
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/**************************************************************************************************
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* GLOBAL VARIABLES
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**************************************************************************************************/
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static uint8_t halKeySavedKeys; /* 保留按键最后的状态，用于查询是否有键值变化 */
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/**************************************************************************************************
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* FUNCTIONS - Local
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**************************************************************************************************/
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static halKeyCBack_t pHalKeyProcessFunction; /* callback function */
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/**************************************************************************************************
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* @fn HAL_KeyInit
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*
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* @brief Initilize Key Service
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*
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* @param none
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*
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* @return None
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**************************************************************************************************/
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void HAL_KeyInit(void)
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{
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/* Initialize previous key to 0 */
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halKeySavedKeys = 0;
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/* Initialize callback function */
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pHalKeyProcessFunction = NULL;
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KEY1_DIR;
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KEY1_PU;
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KEY2_DIR;
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KEY2_PU;
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}
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/**************************************************************************************************
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* @fn HalKeyConfig
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*
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* @brief Configure the Key serivce
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*
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* @param cback - pointer to the CallBack function
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*
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* @return None
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**************************************************************************************************/
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void HalKeyConfig(halKeyCBack_t cback)
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{
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/* Register the callback fucntion */
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pHalKeyProcessFunction = cback;
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tmos_start_task(halTaskID, HAL_KEY_EVENT, HAL_KEY_POLLING_VALUE); /* Kick off polling */
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}
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/**************************************************************************************************
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* @fn HalKeyRead
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*
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* @brief Read the current value of a key
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*
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* @param None
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*
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* @return keys - current keys status
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**************************************************************************************************/
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uint8_t HalKeyRead(void)
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{
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uint8_t keys = 0;
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if(HAL_PUSH_BUTTON1())
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{ //读按键1
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keys |= HAL_KEY_SW_1;
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}
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if(HAL_PUSH_BUTTON2())
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{ //读按键1
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keys |= HAL_KEY_SW_2;
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}
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if(HAL_PUSH_BUTTON3())
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{ //读按键1
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keys |= HAL_KEY_SW_3;
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}
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if(HAL_PUSH_BUTTON4())
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{ //读按键1
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keys |= HAL_KEY_SW_4;
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}
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return keys;
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}
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/**************************************************************************************************
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* @fn HAL_KeyPoll
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*
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* @brief Called by hal_driver to poll the keys
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*
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* @param None
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*
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* @return None
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**************************************************************************************************/
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void HAL_KeyPoll(void)
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{
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uint8_t keys = 0;
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if(HAL_PUSH_BUTTON1())
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{
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keys |= HAL_KEY_SW_1;
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}
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if(HAL_PUSH_BUTTON2())
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{
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keys |= HAL_KEY_SW_2;
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}
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if(HAL_PUSH_BUTTON3())
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{
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keys |= HAL_KEY_SW_3;
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}
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if(HAL_PUSH_BUTTON4())
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{
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keys |= HAL_KEY_SW_4;
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}
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if(keys == halKeySavedKeys)
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{ /* Exit - since no keys have changed */
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return;
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}
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halKeySavedKeys = keys; /* Store the current keys for comparation next time */
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/* Invoke Callback if new keys were depressed */
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if(keys && (pHalKeyProcessFunction))
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{
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(pHalKeyProcessFunction)(keys);
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}
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}
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/******************************** endfile @ key ******************************/
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