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add rtc

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不吃油炸鸡
2025-09-27 19:11:39 +08:00
parent bfa48bcba9
commit 13cd1e65b3
4 changed files with 96 additions and 1 deletions
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2
Power_Pico/Core/Inc/rtc.h
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@@ -41,6 +41,8 @@ extern RTC_HandleTypeDef hrtc;
void MX_RTC_Init(void);
/* USER CODE BEGIN Prototypes */
void SetReferenceTime(void);
void GetElapsedTime_HMS(uint8_t *hours, uint8_t *minutes, uint8_t *seconds);
/* USER CODE END Prototypes */

55
Power_Pico/Core/Src/rtc.c
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@@ -102,4 +102,59 @@ void HAL_RTC_MspDeInit(RTC_HandleTypeDef* rtcHandle)
/* USER CODE BEGIN 1 */
// 存储参考时间的时间戳（秒数）
static uint32_t s_ReferenceTimestamp = 0;
/**
* @brief 设定参考时间：从现在开始计时
* 调用此函数后，计时器清零，重新开始
*/
void SetReferenceTime(void)
{
RTC_TimeTypeDef sTime = {0};
RTC_DateTypeDef sDate = {0};
// 获取当前RTC时间
HAL_RTC_GetTime(&hrtc, &sTime, RTC_FORMAT_BIN);
HAL_RTC_GetDate(&hrtc, &sDate, RTC_FORMAT_BIN);
// 转换为总秒数（简化计算，仅用于计时差）
s_ReferenceTimestamp =
(sDate.Year * 365 + sDate.Month * 31 + sDate.Date) * 24 * 3600 +
sTime.Hours * 3600 +
sTime.Minutes * 60 +
sTime.Seconds;
}
/**
* @brief 获取从参考时间到现在经过的时间（时:分:秒）
* @param hours [out] 经过的小时数
* @param minutes [out] 经过的分钟数
* @param seconds [out] 经过的秒数
*/
void GetElapsedTime_HMS(uint8_t *hours, uint8_t *minutes, uint8_t *seconds)
{
RTC_TimeTypeDef sTime = {0};
RTC_DateTypeDef sDate = {0};
uint32_t currentTimestamp, elapsed;
// 获取当前时间并转为秒数
HAL_RTC_GetTime(&hrtc, &sTime, RTC_FORMAT_BIN);
HAL_RTC_GetDate(&hrtc, &sDate, RTC_FORMAT_BIN);
uint32_t nowSeconds =
(sDate.Year * 365 + sDate.Month * 31 + sDate.Date) * 24 * 3600 +
sTime.Hours * 3600 +
sTime.Minutes * 60 +
sTime.Seconds;
// 计算经过的秒数
elapsed = nowSeconds - s_ReferenceTimestamp;
// 转换为 时:分:秒
*seconds = elapsed % 60;
*minutes = (elapsed / 60) % 60;
*hours = (elapsed / 3600);
}
/* USER CODE END 1 */