MSPM0G3507——GPIO例程讲解1——input_capture

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函数： 

 参数：

返回值： 

主函数代码：

#include "ti_msp_dl_config.h"extern volatile uint32_t interruptVectors[];int main(void)
{SYSCFG_DL_init();                               //把所有的LED灯和按键初始化了一遍/** Turn OFF LED if SW is open, ON if SW is closed.* LED starts OFF by default.*/NVIC_EnableIRQ(GPIO_SWITCHES_INT_IRQN);                  //先允许外部中断while (1) {__WFI();                                            }
}void GROUP1_IRQHandler(void)                            
{switch (DL_Interrupt_getPendingGroup(DL_INTERRUPT_GROUP_1))             //判断是GROUP1中哪个中断挂起{case GPIO_SWITCHES_INT_IIDX:                                        //是按键的中断/* If SW is high, turn the LED off */if (DL_GPIO_readPins(GPIO_SWITCHES_PORT, GPIO_SWITCHES_USER_SWITCH_1_PIN)) {DL_GPIO_setPins(GPIO_LEDS_PORT, GPIO_LEDS_USER_LED_1_PIN);}/* Otherwise, turn the LED on */else{DL_GPIO_clearPins(GPIO_LEDS_PORT, GPIO_LEDS_USER_LED_1_PIN);}break;}
}

 宏定义代码：

#ifndef ti_msp_dl_config_h
#define ti_msp_dl_config_h#define CONFIG_MSPM0G350X#if defined(__ti_version__) || defined(__TI_COMPILER_VERSION__)
#define SYSCONFIG_WEAK __attribute__((weak))
#elif defined(__IAR_SYSTEMS_ICC__)
#define SYSCONFIG_WEAK __weak
#elif defined(__GNUC__)
#define SYSCONFIG_WEAK __attribute__((weak))
#endif#include <ti/devices/msp/msp.h>
#include <ti/driverlib/driverlib.h>
#include <ti/driverlib/m0p/dl_core.h>#ifdef __cplusplus
extern "C" {
#endif/**  ======== SYSCFG_DL_init ========*  Perform all required MSP DL initialization**  This function should be called once at a point before any use of*  MSP DL.*//* clang-format off */#define POWER_STARTUP_DELAY                                                (16)#define CPUCLK_FREQ                                                     32000000/* Port definition for Pin Group GPIO_LEDS */
#define GPIO_LEDS_PORT                                                   (GPIOA)/* Defines for USER_LED_1: GPIOA.0 with pinCMx 1 on package pin 33 */
#define GPIO_LEDS_USER_LED_1_PIN                                 (DL_GPIO_PIN_0)
#define GPIO_LEDS_USER_LED_1_IOMUX                                (IOMUX_PINCM1)
/* Port definition for Pin Group GPIO_SWITCHES */
#define GPIO_SWITCHES_PORT                                               (GPIOB)/* Defines for USER_SWITCH_1: GPIOB.21 with pinCMx 49 on package pin 20 */
// pins affected by this interrupt request:["USER_SWITCH_1"]
#define GPIO_SWITCHES_INT_IRQN                                  (GPIOB_INT_IRQn)
#define GPIO_SWITCHES_INT_IIDX                  (DL_INTERRUPT_GROUP1_IIDX_GPIOB)
#define GPIO_SWITCHES_USER_SWITCH_1_IIDX                    (DL_GPIO_IIDX_DIO21)
#define GPIO_SWITCHES_USER_SWITCH_1_PIN                         (DL_GPIO_PIN_21)
#define GPIO_SWITCHES_USER_SWITCH_1_IOMUX                        (IOMUX_PINCM49)/* clang-format on */void SYSCFG_DL_init(void);
void SYSCFG_DL_initPower(void);
void SYSCFG_DL_GPIO_init(void);
void SYSCFG_DL_SYSCTL_init(void);#ifdef __cplusplus
}
#endif#endif /* ti_msp_dl_config_h */

主函数中有这个函数：

DL_Interrupt_getPendingGroup(DL_INTERRUPT_GROUP_1)；

这是用来判断是那个中断挂起的，具体的介绍，参数，返回值在开头三个图片中。

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