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一、硬件连接

二、移植文件

链接： 提取码：1f78

2.1 board_key.c

/********************************************************************* * INCLUDES */#include 
   
    #include 
    
     #include 
     
      #include 
      
       #include 
       
        #include 
        
         #ifdef USE_ICALL#include 
         
          #endif#include 
          
           #include "util.h"#include "board_key.h"#include "board.h"/********************************************************************* * LOCAL VARIABLES */// 键值static uint8_t s_keysPressed;// 按键消抖时钟static Clock_Struct s_keyChangeClock;// 对应应用层回调函数的函数指针static keysPressedCB_t s_appKeyChangeHandler = NULL;// Memory for the GPIO module to construct a Hwistatic Hwi_Struct s_callbackHwiKeys;// 按键IO配置static PIN_Config s_keyPinsCfg[] ={ Board_KEY_SELECT | PIN_GPIO_OUTPUT_DIS | PIN_INPUT_EN | PIN_PULLUP, Board_KEY_UP | PIN_GPIO_OUTPUT_DIS | PIN_INPUT_EN | PIN_PULLUP, Board_KEY_DOWN | PIN_GPIO_OUTPUT_DIS | PIN_INPUT_EN | PIN_PULLUP, Board_KEY_LEFT | PIN_GPIO_OUTPUT_DIS | PIN_INPUT_EN | PIN_PULLUP, Board_KEY_RIGHT | PIN_GPIO_OUTPUT_DIS | PIN_INPUT_EN | PIN_PULLUP, PIN_TERMINATE};// 按键IO状态结构体static PIN_State s_keyPins;// 按键IO句柄结构体static PIN_Handle s_hKeyPins;/********************************************************************* * LOCAL FUNCTIONS *//** @brief 按键驱动回调函数 @param none @return none*/static void board_keyCallback(PIN_Handle hPin, PIN_Id pinId){ // 清除键值 s_keysPressed = 0; // 判断按键是否按下 if(PIN_getInputValue(Board_KEY_SELECT) == 0) { // 保存键值 s_keysPressed |= KEY_SELECT; } if(PIN_getInputValue(Board_KEY_UP) == 0) { s_keysPressed |= KEY_UP; } if(PIN_getInputValue(Board_KEY_DOWN) == 0) { s_keysPressed |= KEY_DOWN; } if(PIN_getInputValue(Board_KEY_LEFT) == 0) { s_keysPressed |= KEY_LEFT; } if(PIN_getInputValue(Board_KEY_RIGHT) == 0) { s_keysPressed |= KEY_RIGHT; } // 启动定时器进行消抖 Util_startClock(&s_keyChangeClock);}/** @brief 按键驱动的消抖处理函数 @param none @return none*/static void board_keyChangeHandler(UArg a0){ // 判断是否有注册 if(s_appKeyChangeHandler != NULL) { // 消抖 if(PIN_getInputValue(Board_KEY_SELECT) == 0) { s_keysPressed |= KEY_SELECT; } if(PIN_getInputValue(Board_KEY_UP) == 0) { s_keysPressed |= KEY_UP; } if(PIN_getInputValue(Board_KEY_DOWN) == 0) { s_keysPressed |= KEY_DOWN; } if(PIN_getInputValue(Board_KEY_LEFT) == 0) { s_keysPressed |= KEY_LEFT; } if(PIN_getInputValue(Board_KEY_RIGHT) == 0) { s_keysPressed |= KEY_RIGHT; } // 调用按键应用层处理函数 (*s_appKeyChangeHandler)(s_keysPressed); }}/********************************************************************* * PUBLIC FUNCTIONS *//** @brief 按键驱动的初始化函数 @param appKeyCB 按键回调函数 @return none*/void Board_initKeys(keysPressedCB_t appKeyCB){ // 初始化按键的IO s_hKeyPins = PIN_open(&s_keyPins, s_keyPinsCfg); // 注册回调函数 PIN_registerIntCb(s_hKeyPins, board_keyCallback); // 修改成双沿中断触发，以避免睡眠之后中断不灵 PIN_setConfig(s_hKeyPins, PIN_BM_IRQ, Board_KEY_SELECT | PIN_IRQ_BOTHEDGES); // PIN_IRQ_NEGEDGE PIN_setConfig(s_hKeyPins, PIN_BM_IRQ, Board_KEY_UP | PIN_IRQ_BOTHEDGES); PIN_setConfig(s_hKeyPins, PIN_BM_IRQ, Board_KEY_DOWN | PIN_IRQ_BOTHEDGES); PIN_setConfig(s_hKeyPins, PIN_BM_IRQ, Board_KEY_LEFT | PIN_IRQ_BOTHEDGES); PIN_setConfig(s_hKeyPins, PIN_BM_IRQ, Board_KEY_RIGHT | PIN_IRQ_BOTHEDGES); // 低功耗下的配置#ifdef POWER_SAVING PIN_setConfig(s_hKeyPins, PINCC26XX_BM_WAKEUP, Board_KEY_SELECT | PINCC26XX_WAKEUP_NEGEDGE); PIN_setConfig(s_hKeyPins, PINCC26XX_BM_WAKEUP, Board_KEY_UP | PINCC26XX_WAKEUP_NEGEDGE); PIN_setConfig(s_hKeyPins, PINCC26XX_BM_WAKEUP, Board_KEY_DOWN | PINCC26XX_WAKEUP_NEGEDGE); PIN_setConfig(s_hKeyPins, PINCC26XX_BM_WAKEUP, Board_KEY_LEFT | PINCC26XX_WAKEUP_NEGEDGE); PIN_setConfig(s_hKeyPins, PINCC26XX_BM_WAKEUP, Board_KEY_RIGHT | PINCC26XX_WAKEUP_NEGEDGE);#endif // POWER_SAVING // 初始化按键定时事件 Util_constructClock(&s_keyChangeClock, board_keyChangeHandler, KEY_DEBOUNCE_TIMEOUT, 0, false, 0); // 保存应用层的函数指针 s_appKeyChangeHandler = appKeyCB;}/*************************************END OF FILE*************************************/
          
         
        
       
      
     
    
   

2.2 board_key.h

#ifndef _BOARD_KEY_H_#define _BOARD_KEY_H_#ifdef __cplusplusextern "C" {   #endif/********************************************************************* * DEFINITIONS */// 键值#define KEY_SELECT            0x0001#define KEY_UP                0x0002#define KEY_DOWN              0x0004#define KEY_LEFT              0x0008#define KEY_RIGHT             0x0010#define Board_KEY_UP          IOID_19#define Board_KEY_DOWN        IOID_12#define Board_KEY_LEFT        IOID_15#define Board_KEY_RIGHT       IOID_18#define Board_KEY_SELECT      IOID_11// 超时时间#define KEY_DEBOUNCE_TIMEOUT  20    // 200/********************************************************************* * TYPEDEFS */typedef void (*keysPressedCB_t)(uint8_t keysPressed);/********************************************************************* * API FUNCTIONS */void Board_initKeys(keysPressedCB_t appKeyCB);#ifdef __cplusplus}#endif#endif /* _BOARD_KEY_H_ */

三、API调用

需包含头文件 board_key.h

Board_initKeys

四、使用例子

1）添加头文件（例 multi_role.c 中）

#include "board_key.h"

2）添加初始化代码（multi_role.c 的 multi_role_init 函数末尾中）

// 初始化按键Board_initKeys(multi_role_keyChangeHandler);

3）添加按键改变产生按键事件函数

/** @brief Key event handler function. @param bit field for key events. @return None.*/void multi_role_keyChangeHandler(uint8_t keys){     uint8_t *pData;  // Allocate space for the event data.  if ((pData = ICall_malloc(sizeof(uint8_t))))  {       // Store the key data    *pData = keys;    // Queue the event.    multi_role_enqueueMsg(MR_KEY_CHANGE_EVT, pData);  }}

4）注册按键事件（multi_role.c 的 multi_role_processAppMsg 函数中）

/** @brief Process an incoming callback from a profile. @param pMsg - message to process. @return None.*/static void multi_role_processAppMsg(mrEvt_t *pMsg){     switch (pMsg->event)  {     /*------------------按键事件处理--------------------*/  case MR_KEY_CHANGE_EVT:    multi_role_handleKeys(*(pMsg->pData));    // Free the app data    ICall_free(pMsg->pData);    break;  default:    // Do nothing.    break;  }}

5）添加按键处理函数

/** @brief Handles all key events for this device. @param keys - bit field for key events. Valid entries:                 HAL_KEY_SW_2                 HAL_KEY_SW_1 @return None.*/static void multi_role_handleKeys(uint8_t keys){     if (keys & KEY_LEFT)  {       // Check if the key is still pressed    if (PIN_getInputValue(Board_KEY_LEFT) == 0)    {         // 自定义处理    }  }  else if (keys & KEY_UP)  {       // Check if the key is still pressed    if (PIN_getInputValue(Board_KEY_UP) == 0)    {         // 自定义处理    }  }}

6）编译错误

//#define Board_KEY_DOWN          CC2650DK_7ID_KEY_DOWN//#define Board_KEY_LEFT          CC2650DK_7ID_KEY_LEFT//#define Board_KEY_RIGHT         CC2650DK_7ID_KEY_RIGHT//#define Board_KEY_SELECT        CC2650DK_7ID_KEY_SELECT//#define Board_KEY_UP            CC2650DK_7ID_KEY_UP

• 由 写于 2019 年 1 月 22 日

• 参考：