ble学习笔记十四---------ble协议栈之按键事件
协议栈按键事件
修改工程配置,使能按键功能
添加头文件#include "serial.h"
协议栈中定义宏开关
//自定义宏开关
#if defined( CC2540_MINIDK )||(MT254xboard)
//函数声明,按键响应
static void simpleBLEPeripheral_HandleKeys( uint8 shift, uint8 keys );
//init函数中定义
#if defined (MT254xboard)
// Register for all key events - This app will handle all key events
RegisterForKeys( simpleBLEPeripheral_TaskID );
#endif
static void simpleBLEPeripheral_ProcessOSALMsg( osal_event_hdr_t *pMsg )
{
switch ( pMsg->event )
{
//
#if defined( CC2540_MINIDK )||(MT254xboard)
case KEY_CHANGE:
simpleBLEPeripheral_HandleKeys( ((keyChange_t *)pMsg)->state, ((keyChange_t *)pMsg)->keys );
break;
#endif // #if defined( CC2540_MINIDK )
default:
// do nothing
break;
}
}
//
#if defined( CC2540_MINIDK )||(MT254xboard)
/*********************************************************************
* @fn simpleBLEPeripheral_HandleKeys
*
* @brief Handles all key events for this device.
* 按键响应操作
*
* @param shift - true if in shift/alt.
* @param keys - bit field for key events. Valid entries:
* HAL_KEY_SW_2
* HAL_KEY_SW_1
*
* @return none
*/
static void simpleBLEPeripheral_HandleKeys( uint8 shift, uint8 keys )
{
//uint8 SK_Keys = 0;
VOID shift; // Intentionally unreferenced parameter
if ( keys & HAL_KEY_UP )
{
SerialPrintf("%s\r\n", "Key Up");
}
if ( keys & HAL_KEY_RIGHT )
{
SerialPrintf("%s\r\n", "Key right");
}
if ( keys & HAL_KEY_CENTER )
{
SerialPrintf("%s\r\n", "Key center");
}
if ( keys & HAL_KEY_LEFT )
{
SerialPrintf("%s\r\n", "Key left");
}
if ( keys & HAL_KEY_DOWN )
{
SerialPrintf("%s\r\n", "Key down");
}
if ( keys & HAL_KEY_SW_6 )
{
SerialPrintf("%s\r\n", "Button down");
}
}
#endif // #if defined( CC2540_MINIDK )
修改五向按键值的电压范围 在hal_led.c文件中
#if !defined ( CC2540_MINIDK )
/**************************************************************************************************
* @fn halGetJoyKeyInput
*
* @brief Map the ADC value to its corresponding key.
* 按键值对应的电压范围
*
* @param None
*
* @return keys - current joy key status
**************************************************************************************************/
uint8 halGetJoyKeyInput(void)
{
/* The joystick control is encoded as an analog voltage.
* Read the JOY_LEVEL analog value and map it to joy movement.
*/
uint16 adc;
uint8 ksave0 = 0;
uint8 ksave1;
/* Keep on reading the ADC until two consecutive key decisions are the same. */
do
{
ksave1 = ksave0; /* save previouse key reading */
adc = HalAdcRead (HAL_KEY_JOY_CHN, HAL_ADC_RESOLUTION_10);
if ((adc >= 2) && (adc <= 160)) // right 172
{
ksave0 |= HAL_KEY_RIGHT;
}
else if ((adc >= 161) && (adc <= 180)) // cen 146
{
ksave0 |= HAL_KEY_CENTER;
}
else if ((adc >= 181) && (adc <= 220)) // up 204
{
ksave0 |= HAL_KEY_UP;
}
else if ((adc >= 221) && (adc <= 270)) // left 256
{
ksave0 |= HAL_KEY_LEFT;
}
else if ((adc >= 271) && (adc <= 350)) // down 306
{
ksave0 |= HAL_KEY_DOWN;
}
} while (ksave0 != ksave1);
return ksave0;
}
#endif