stm32hal库获取当前时间,字符串输出
时间: 2024-05-28 22:03:27 浏览: 99
在使用STM32HAL库获取当前时间并将其转换为字符串输出时,我们可以使用以下步骤:
1. 定义一个RTC_HandleTypeDef结构体变量,用于表示RTC外设的句柄。
```c
RTC_HandleTypeDef hrtc;
```
2. 初始化RTC外设并使能。
```c
/* Initialize 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);
/* Enable the RTC */
HAL_RTCEx_EnableBypassShadow(&hrtc);
```
3. 获取当前时间并将其转换为RTC_DateTypeDef和RTC_TimeTypeDef结构体。
```c
RTC_DateTypeDef sdatestructureget;
RTC_TimeTypeDef stimestructureget;
HAL_RTC_GetTime(&hrtc, &stimestructureget, RTC_FORMAT_BIN);
HAL_RTC_GetDate(&hrtc, &sdatestructureget, RTC_FORMAT_BIN);
```
4. 将RTC_DateTypeDef和RTC_TimeTypeDef结构体中的参数转换为字符串。
```c
char timeString[20];
sprintf(timeString, "%02d:%02d:%02d", stimestructureget.Hours, stimestructureget.Minutes, stimestructureget.Seconds);
char dateString[20];
sprintf(dateString, "%02d-%02d-%02d", sdatestructureget.Date, sdatestructureget.Month, sdatestructureget.Year);
```
完整代码如下:
```c
RTC_HandleTypeDef hrtc;
void RTC_Init(void)
{
/* Initialize 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);
/* Enable the RTC */
HAL_RTCEx_EnableBypassShadow(&hrtc);
}
void Get_Time_String(char* timeString)
{
RTC_DateTypeDef sdatestructureget;
RTC_TimeTypeDef stimestructureget;
HAL_RTC_GetTime(&hrtc, &stimestructureget, RTC_FORMAT_BIN);
HAL_RTC_GetDate(&hrtc, &sdatestructureget, RTC_FORMAT_BIN);
sprintf(timeString, "%02d:%02d:%02d", stimestructureget.Hours, stimestructureget.Minutes, stimestructureget.Seconds);
}
void Get_Date_String(char* dateString)
{
RTC_DateTypeDef sdatestructureget;
RTC_TimeTypeDef stimestructureget;
HAL_RTC_GetTime(&hrtc, &stimestructureget, RTC_FORMAT_BIN);
HAL_RTC_GetDate(&hrtc, &sdatestructureget, RTC_FORMAT_BIN);
sprintf(dateString, "%02d-%02d-%02d", sdatestructureget.Date, sdatestructureget.Month, sdatestructureget.Year);
}
```
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