MSPM0G3507 ——GPIO例程讲解2——simultaneous_interrupts

主函数：

 
#include "ti_msp_dl_config.h"
 
int main(void)
{
    SYSCFG_DL_init();
 
    /* Enable Interrupt for both GPIOA and GPIOB ports */
    NVIC_EnableIRQ(GPIO_SWITCHES_GPIOA_INT_IRQN);                   //启用SWITCHES——A的中断  
    NVIC_EnableIRQ(GPIO_SWITCHES_GPIOB_INT_IRQN);                   //启用SWITCHES——B的中断  
 
    while (1) {
        __WFI();
    }
}
 
void GROUP1_IRQHandler(void)
{
    /*
     * Get the pending interrupt for the GPIOA port and store for
     * comparisons later                //获取GPIOA端口的挂起中断，并存储以供稍后进行比较
     */
    uint32_t gpioA = DL_GPIO_getEnabledInterruptStatus(GPIOA,GPIO_SWITCHES_USER_SWITCH_1_PIN | GPIO_SWITCHES_USER_SWITCH_3_PIN);   
                            //获取已经启用的中断状态（这里是1和3的中断）
    /*
     * Bitwise AND the pending interrupt with the pin you want to check,
     * then check if it is equal to the pins. Clear the interrupt status.
     */             //将挂起的中断与要检查的引脚逐位AND，然后检查它是否等于引脚。清除中断状态。
 
 
 
 
     //类似于32中得到中断标志位，再判断中断标志位是谁的
    if ((gpioA & GPIO_SWITCHES_USER_SWITCH_1_PIN) ==GPIO_SWITCHES_USER_SWITCH_1_PIN) //如果成立，则是该中断
    {
        DL_GPIO_togglePins(GPIO_LEDS_USER_LED_1_PORT, GPIO_LEDS_USER_LED_1_PIN);
        DL_GPIO_clearInterruptStatus(GPIOA, GPIO_SWITCHES_USER_SWITCH_1_PIN);
    }
 
    if ((gpioA & GPIO_SWITCHES_USER_SWITCH_3_PIN) == GPIO_SWITCHES_USER_SWITCH_3_PIN) 
    {
        DL_GPIO_togglePins(GPIO_LEDS_USER_LED_3_PORT, GPIO_LEDS_USER_LED_3_PIN);
        DL_GPIO_clearInterruptStatus(GPIOA, GPIO_SWITCHES_USER_SWITCH_3_PIN);
    }
 
    /* Repeat with GPIOB Port */
    uint32_t gpioB = DL_GPIO_getEnabledInterruptStatus( GPIOB, GPIO_SWITCHES_USER_SWITCH_2_PIN);
 
    if ((gpioB & GPIO_SWITCHES_USER_SWITCH_2_PIN) ==  GPIO_SWITCHES_USER_SWITCH_2_PIN)
     {
        DL_GPIO_togglePins(GPIO_LEDS_USER_LED_2_PORT, GPIO_LEDS_USER_LED_2_PIN);
        DL_GPIO_clearInterruptStatus(GPIOB, GPIO_SWITCHES_USER_SWITCH_2_PIN);
    }
}

宏定义函数：

 
#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
 
 
 
 
/* Defines for USER_LED_1: GPIOA.0 with pinCMx 1 on package pin 33 */
#define GPIO_LEDS_USER_LED_1_PORT                                        (GPIOA)
#define GPIO_LEDS_USER_LED_1_PIN                                 (DL_GPIO_PIN_0)
#define GPIO_LEDS_USER_LED_1_IOMUX                                (IOMUX_PINCM1)
/* Defines for USER_LED_2: GPIOB.27 with pinCMx 58 on package pin 29 */
#define GPIO_LEDS_USER_LED_2_PORT                                        (GPIOB)
#define GPIO_LEDS_USER_LED_2_PIN                                (DL_GPIO_PIN_27)
#define GPIO_LEDS_USER_LED_2_IOMUX                               (IOMUX_PINCM58)
/* Defines for USER_LED_3: GPIOB.26 with pinCMx 57 on package pin 28 */
#define GPIO_LEDS_USER_LED_3_PORT                                        (GPIOB)
#define GPIO_LEDS_USER_LED_3_PIN                                (DL_GPIO_PIN_26)
#define GPIO_LEDS_USER_LED_3_IOMUX                               (IOMUX_PINCM57)
/* Defines for USER_SWITCH_1: GPIOA.12 with pinCMx 34 on package pin 5 */
#define GPIO_SWITCHES_USER_SWITCH_1_PORT                                 (GPIOA)
// pins affected by this interrupt request:["USER_SWITCH_1","USER_SWITCH_3"]
#define GPIO_SWITCHES_GPIOA_INT_IRQN                            (GPIOA_INT_IRQn)
#define GPIO_SWITCHES_GPIOA_INT_IIDX            (DL_INTERRUPT_GROUP1_IIDX_GPIOA)
#define GPIO_SWITCHES_USER_SWITCH_1_IIDX                    (DL_GPIO_IIDX_DIO12)
#define GPIO_SWITCHES_USER_SWITCH_1_PIN                         (DL_GPIO_PIN_12)
#define GPIO_SWITCHES_USER_SWITCH_1_IOMUX                        (IOMUX_PINCM34)
/* Defines for USER_SWITCH_2: GPIOB.12 with pinCMx 29 on package pin 64 */
#define GPIO_SWITCHES_USER_SWITCH_2_PORT                                 (GPIOB)
// pins affected by this interrupt request:["USER_SWITCH_2"]
#define GPIO_SWITCHES_GPIOB_INT_IRQN                            (GPIOB_INT_IRQn)
#define GPIO_SWITCHES_GPIOB_INT_IIDX            (DL_INTERRUPT_GROUP1_IIDX_GPIOB)
#define GPIO_SWITCHES_USER_SWITCH_2_IIDX                    (DL_GPIO_IIDX_DIO12)
#define GPIO_SWITCHES_USER_SWITCH_2_PIN                         (DL_GPIO_PIN_12)
#define GPIO_SWITCHES_USER_SWITCH_2_IOMUX                        (IOMUX_PINCM29)
/* Defines for USER_SWITCH_3: GPIOA.13 with pinCMx 35 on package pin 6 */
#define GPIO_SWITCHES_USER_SWITCH_3_PORT                                 (GPIOA)
#define GPIO_SWITCHES_USER_SWITCH_3_IIDX                    (DL_GPIO_IIDX_DIO13)
#define GPIO_SWITCHES_USER_SWITCH_3_PIN                         (DL_GPIO_PIN_13)
#define GPIO_SWITCHES_USER_SWITCH_3_IOMUX                        (IOMUX_PINCM35)
 
/* 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 */

主函数中使用了该函数：

DL_GPIO_getEnabledInterruptStatus 

用法，参数，返回值如下：