MSPM0G3507——定时器例程1——TIMA_periodic_repeat

MSPM0G3507——定时器例程1——TIMA_periodic_repeat_count

以下示例以周期模式配置TimerA0，并使用重复计数功能每隔2秒切换一次GPIO。注意：重复计数功能特定于TimerA0实例，而不是其他TimerA实例。这里是一次500毫秒，重复了四次

主函数：


#include "ti_msp_dl_config.h"int main(void)
{SYSCFG_DL_init();NVIC_EnableIRQ(TIMER_0_INST_INT_IRQN);                          //允许中断DL_SYSCTL_enableSleepOnExit();                                  //低功耗语句可以删掉DL_TimerA_startCounter(TIMER_0_INST);                           //让TIMA0开始计数while (1) {__WFI();                              //低功耗语句可以删掉}
}void TIMER_0_INST_IRQHandler(void)
{switch (DL_TimerA_getPendingInterrupt(TIMER_0_INST))        //判断是不是TIMA0中断，并确定是TIMA0中哪一个中断{case DL_TIMERA_IIDX_REPEAT_COUNT:               //如果是重复计数中断DL_GPIO_togglePins(GPIO_LEDS_PORT,GPIO_LEDS_USER_LED_1_PIN | GPIO_LEDS_USER_TEST_PIN);break;default:break;}
}

宏定义：


#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 TIMER_0 */
#define TIMER_0_INST                                                     (TIMA0)
#define TIMER_0_INST_IRQHandler                                 TIMA0_IRQHandler
#define TIMER_0_INST_INT_IRQN                                   (TIMA0_INT_IRQn)
#define TIMER_0_INST_LOAD_VALUE                                         (16383U)
#define TIMER_0_REPEAT_COUNT_4                                               (3)/* 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)
/* Defines for USER_TEST: GPIOA.15 with pinCMx 37 on package pin 8 */
#define GPIO_LEDS_USER_TEST_PIN                                 (DL_GPIO_PIN_15)
#define GPIO_LEDS_USER_TEST_IOMUX                                (IOMUX_PINCM37)/* 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);
void SYSCFG_DL_TIMER_0_init(void);bool SYSCFG_DL_saveConfiguration(void);
bool SYSCFG_DL_restoreConfiguration(void);#ifdef __cplusplus
}
#endif#endif /* ti_msp_dl_config_h */

主函数中有这一函数：

DL_TimerA_getPendingInterrupt(TIMER_0_INST)

是用来判断终端是否来自TIMA0中断，并确定是TIMA0中的哪个中断

这里虽然名字有TIMERA，其实还是TIMER，这里有了重定义