65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
#include "../main/SystemInclude.h"
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void RTC_SEC_Init(void)
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{
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RTC_InitTypeDef RTC_InitStructure;
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/* 1. 初始化RTC参数 */
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RTC_InitStructure.ClockSource = RCC_RTCCLKSource_LSI; // RTC时钟源LSI
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RTC_InitStructure.Prescaler = 32767; // RTC period = RTCCLK/RTC_PR = (32.768 KHz)/(32767+1) = 1S
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RTC_InitStructure.Counter = 0; // 从0开始计数
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RTC_InitStructure.Alarm = 10; // 闹钟时间10S
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LHL_RTC_Init(&RTC_InitStructure);
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/* 2. 开启秒中断 */
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LHL_RTC_ITConfig(RTC_IT_SECIE, ENABLE);
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NVIC_EnableIRQ(RTC_IRQn); // 秒中断和溢出中断在RTC_IRQn处理
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}
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void RTC_ALR_Init(void)
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{
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RTC_InitTypeDef RTC_InitStructure;
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/* 1. 初始化RTC参数 */
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RTC_InitStructure.ClockSource = RCC_RTCCLKSource_LSI; // RTC时钟源LSI
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RTC_InitStructure.Prescaler = 32767; // RTC period = RTCCLK/RTC_PR = (32.768 KHz)/(32767+1) = 1S
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RTC_InitStructure.Counter = 0; // 从0开始计数
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RTC_InitStructure.Alarm = 5-1; // 闹钟时间5S
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LHL_RTC_Init(&RTC_InitStructure);
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/* 2. 开启闹钟 */
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LHL_RTC_ITConfig(RTC_IT_ALRIE, ENABLE);
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NVIC_EnableIRQ(RTCAlarm_IRQn); // 独立开启闹钟中断，则在RTCAlarm_IRQn处理
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}
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/* 不建议同时开启秒中断和闹钟中断 */
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//秒中断
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void RTC_IRQHandler(void)
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{
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uint32_t Time_Count;
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if (LHL_RTC_GetPending(RTC_FLAG_SECF) == SET)
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{
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// 清除RTC秒中断标志
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LHL_RTC_ClearPending(RTC_FLAG_SECF);
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// 获取当前RTC 计数值并打印
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LHL_RTC_GetCounter(&Time_Count);
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// printf("%d\n", Time_Count);
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}
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}
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//闹钟中断
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void RTCAlarm_IRQHandler(void)
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{
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uint32_t Time_Count;
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if (LHL_RTC_GetPending(RTC_FLAG_ALRF) == SET)
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{
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LHL_RTC_ClearPending(RTC_FLAG_ALRF); // 清除RTC闹钟中断标志
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LHL_RTC_GetCounter(&Time_Count); // 获取当前RTC 计数值并打印
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LHL_RTC_SetAlarm(Time_Count+4); // 设置新的闹钟，当前时间+5S
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// printf("Alarm is ringing: %d\n", Time_Count);
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}
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}
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