3.按键

       GPIO读取函数为

DL_GPIO_readPins(PORTA_PORT,PORTA_KEY1_PIN);

       注意这个函数的返回值为GPIO的地址，如DL_GPIO_PIN_18对应0x00040000，DL_GPIO_PIN_19对应0x00080000等。

               故对引脚电平的读取应为

/*----------------------------读取方式1------------------------------*/

/* 高电平的判断方式 */

if (DL_GPIO_readPins(KEY2_PORT, KEY2_PIN2_PIN) > 0) // 若引脚为高电平

{

/* 用户代码 */

}

/*----------------------------读取方式2------------------------------*/

/* 低电平的判断方式 */

if (DL_GPIO_readPins(KEY2_PORT, KEY2_PIN2_PIN) == 0) // 若引脚为低电平

{

/* 用户代码 */

}

/*----------------------------读取方式3------------------------------*/

/* 高、低电平的判断方式 */

if (DL_GPIO_readPins(KEY2_PORT, KEY2_PIN2_PIN)) // 若引脚为高电平

{

/* 用户代码 */

}

else // 不是高电平，那就是低电平

{

/* 用户代码 */

}

/*-------------------------------------------------------------------*/

4.定时器

       

！！！注：这里的中断使能触发事件一定要选择，否则不会进入中断

中断服务例程的命名：

/* Defines for TIMER_1S */

#define TIMER_1S_INST                                                    (TIMA1)

#define TIMER_1S_INST_IRQHandler                                TIMA1_IRQHandler

#define TIMER_1S_INST_INT_IRQN                                  (TIMA1_INT_IRQn)

#define TIMER_1S_INST_LOAD_VALUE                                        (49999U)

/* Defines for TIMER_1MS */

#define TIMER_1MS_INST                                                   (TIMA0)

#define TIMER_1MS_INST_IRQHandler                               TIMA0_IRQHandler

#define TIMER_1MS_INST_INT_IRQN                                 (TIMA0_INT_IRQn)

#define TIMER_1MS_INST_LOAD_VALUE                                          (99U)

例如：

void TIMER_1S_INST_IRQHandler(void)

void TIMER_1MS_INST_IRQHandler(void)

匹配中断：

typedef enum {

   /*! Timer interrupt index for zero interrupt */

   DL_TIMER_IIDX_ZERO = GPTIMER_CPU_INT_IIDX_STAT_Z,

   /*! Timer interrupt index for load interrupt */

   DL_TIMER_IIDX_LOAD = GPTIMER_CPU_INT_IIDX_STAT_L,

   /*! Timer interrupt index for compare 0 down interrupt */

   DL_TIMER_IIDX_CC0_DN = GPTIMER_CPU_INT_IIDX_STAT_CCD0,

   /*! Timer interrupt index for compare 1 down interrupt */

   DL_TIMER_IIDX_CC1_DN = GPTIMER_CPU_INT_IIDX_STAT_CCD1,

   /*! Timer interrupt index for compare 2 down interrupt */

   DL_TIMER_IIDX_CC2_DN = GPTIMER_CPU_INT_IIDX_STAT_CCD2,

   /*! Timer interrupt index for compare 3 down interrupt */

   DL_TIMER_IIDX_CC3_DN = GPTIMER_CPU_INT_IIDX_STAT_CCD3,

   /*! Timer interrupt index for compare 0 up interrupt */

   DL_TIMER_IIDX_CC0_UP = GPTIMER_CPU_INT_IIDX_STAT_CCU0,

   /*! Timer interrupt index for compare 1 up interrupt */

   DL_TIMER_IIDX_CC1_UP = GPTIMER_CPU_INT_IIDX_STAT_CCU1,

   /*! Timer interrupt index for compare 2 up interrupt */

   DL_TIMER_IIDX_CC2_UP = GPTIMER_CPU_INT_IIDX_STAT_CCU2,

   /*! Timer interrupt index for compare 3 up interrupt */

   DL_TIMER_IIDX_CC3_UP = GPTIMER_CPU_INT_IIDX_STAT_CCU3,

   /*! Timer interrupt index for compare 4 down interrupt */

   DL_TIMER_IIDX_CC4_DN = GPTIMER_CPU_INT_IIDX_STAT_CCD4,

   /*! Timer interrupt index for compare 5 down interrupt */

   DL_TIMER_IIDX_CC5_DN = GPTIMER_CPU_INT_IIDX_STAT_CCD5,

   /*! Timer interrupt index for compare 4 up interrupt */

   DL_TIMER_IIDX_CC4_UP = GPTIMER_CPU_INT_IIDX_STAT_CCU4,

   /*! Timer interrupt index for compare 5 up interrupt */

   DL_TIMER_IIDX_CC5_UP = GPTIMER_CPU_INT_IIDX_STAT_CCU5,

   /*! Timer interrupt index for fault interrupt */

   DL_TIMER_IIDX_FAULT = GPTIMER_CPU_INT_IIDX_STAT_F,

   /*! Timer interrupt index for timer overflow interrupt */

   DL_TIMER_IIDX_OVERFLOW = GPTIMER_CPU_INT_IIDX_STAT_TOV,

   /*! Timer interrupt index for repeat counter

    * @note <b> This is a Timer A specific interrupt. </b>

    */

   DL_TIMER_IIDX_REPEAT_COUNT = GPTIMER_CPU_INT_IIDX_STAT_REPC,

   /*! Timer interrupt index for direction change interrupt

    * @note <b> Please refer the Timer TRM to determine TIMG instances which

    * support this feature. </b> */

   DL_TIMER_IIDX_DIR_CHANGE = GPTIMER_CPU_INT_IIDX_STAT_DC,

} DL_TIMER_IIDX;

示例程序：

#include "ti_msp_dl_config.h"

#define DELAY (16000000)

int i = 0;

int main(void)

{

SYSCFG_DL_init();//芯片资源初始化，由sysconfig配置

NVIC_EnableIRQ(TIMER_0_INST_INT_IRQN);//开启中断管理

DL_TimerA_startCounter(TIMER_0_INST);//开启定时器

DL_GPIO_setPins(LED_PORT,LED_LED0_PIN);//LED初始状态

while(1)

{

 

}

}

//TIMER_0中断服务例程

void TIMER_0_INST_IRQHandler(void)

{

   switch (DL_TimerA_getPendingInterrupt(TIMER_0_INST))

{

       case DL_TIMER_IIDX_ZERO:

           DL_GPIO_togglePins(LED_PORT,LED_LED0_PIN);

        i++;

       break;

   }

   //在只开启单个定时器的情况下，不使用switch也可以

   //DL_GPIO_togglePins(LED_PORT,LED_LED0_PIN);

//i++;

}