STM32G431RBT6HAL库RTC闹钟配置
时间: 2024-04-13 18:20:22 浏览: 233
以下是使用HAL库配置STM32G431RBT6的RTC闹钟的示例代码:
```
#include "stm32g4xx_hal.h"
RTC_HandleTypeDef hrtc;
void RTC_Config(void)
{
/* Enable RTC clock */
__HAL_RCC_RTC_ENABLE();
/* Configure RTC */
hrtc.Instance = RTC;
hrtc.Init.HourFormat = RTC_HOURFORMAT_24;
hrtc.Init.AsynchPrediv = 127;
hrtc.Init.SynchPrediv = 255;
hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
HAL_RTC_Init(&hrtc);
/* Configure RTC alarm */
RTC_AlarmTypeDef sAlarm;
sAlarm.AlarmTime.Hours = 8;
sAlarm.AlarmTime.Minutes = 30;
sAlarm.AlarmTime.Seconds = 0;
sAlarm.AlarmTime.SubSeconds = 0;
sAlarm.AlarmTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
sAlarm.AlarmTime.StoreOperation = RTC_STOREOPERATION_RESET;
sAlarm.AlarmMask = RTC_ALARMMASK_DATEWEEKDAY;
sAlarm.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_ALL;
sAlarm.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_WEEKDAY;
sAlarm.AlarmDateWeekDay = RTC_WEEKDAY_MONDAY;
sAlarm.Alarm = RTC_ALARM_A;
HAL_RTC_SetAlarm(&hrtc, &sAlarm, RTC_FORMAT_BIN);
}
void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc)
{
/* RTC alarm callback function */
}
int main(void)
{
/* Configure RTC */
RTC_Config();
/* Start RTC alarm */
HAL_RTC_AlarmAEventCallback(&hrtc);
while (1)
{
/* Main loop */
}
}
```
在上面的代码中,我们首先启用了RTC时钟,然后初始化了RTC和RTC闹钟。在RTC闹钟的初始化中,我们设置了闹钟时间为每周一的8:30,同时设置了闹钟掩码为日期/星期日,并将闹钟设置为闹钟A。最后,我们在主函数中调用了`HAL_RTC_AlarmAEventCallback`函数来启动RTC闹钟,并在回调函数中实现闹钟事件处理程序。
注意:在使用RTC闹钟时,必须确保在闹钟触发之前,MCU不会进入低功耗模式。否则,RTC闹钟将无法正常触发。
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