IIC模块#

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#include "rtc_app.h"
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RTC_TimeTypeDef time;//定义时间结构体
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RTC_DataTypeDef date;//定义日期结构体
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void rtc_proc(void)
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{
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    HAL_RTC_GetTime(&hrtc,&time,RTC_FORMAT_BIN);
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    HAL_RTC_GetDate(&hrtc,&date,RTC_FORMAT_BIN);
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}

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#include "rtc.h"
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#include "bsp_system.h"
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void rtc_proc(void);

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/**
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  * @brief  RTC Time structure definition
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  */
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typedef struct
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{
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  uint8_t Hours;            /*!< Specifies the RTC Time Hour.
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                                 This parameter must be a number between Min_Data = 0 and Max_Data = 12 if the RTC_HourFormat_12 is selected.
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                                 This parameter must be a number between Min_Data = 0 and Max_Data = 23 if the RTC_HourFormat_24 is selected */
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  uint8_t Minutes;          /*!< Specifies the RTC Time Minutes.
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                                 This parameter must be a number between Min_Data = 0 and Max_Data = 59 */
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  uint8_t Seconds;          /*!< Specifies the RTC Time Seconds.
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                                 This parameter must be a number between Min_Data = 0 and Max_Data = 59 */
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  uint8_t TimeFormat;       /*!< Specifies the RTC AM/PM Time.
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                                 This parameter can be a value of @ref RTC_AM_PM_Definitions */
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  uint32_t SubSeconds;     /*!< Specifies the RTC_SSR RTC Sub Second register content.
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                                 This parameter corresponds to a time unit range between [0-1] Second
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                                 with [1 Sec / SecondFraction +1] granularity */
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  uint32_t SecondFraction;  /*!< Specifies the range or granularity of Sub Second register content
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                                 corresponding to Synchronous pre-scaler factor value (PREDIV_S)
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                                 This parameter corresponds to a time unit range between [0-1] Second
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                                 with [1 Sec / SecondFraction +1] granularity.
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                                 This field will be used only by HAL_RTC_GetTime function */
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  uint32_t DayLightSaving;  /*!< This interface is deprecated. To manage Daylight Saving Time,
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                                 please use HAL_RTC_DST_xxx functions */
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  uint32_t StoreOperation;  /*!< This interface is deprecated. To manage Daylight Saving Time,
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                                 please use HAL_RTC_DST_xxx functions */
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} RTC_TimeTypeDef;
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/**
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  * @brief  RTC Date structure definition
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  */
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typedef struct
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{
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  uint8_t WeekDay;  /*!< Specifies the RTC Date WeekDay.
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                         This parameter can be a value of @ref RTC_WeekDay_Definitions */
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  uint8_t Month;    /*!< Specifies the RTC Date Month (in BCD format).
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                         This parameter can be a value of @ref RTC_Month_Date_Definitions */
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  uint8_t Date;     /*!< Specifies the RTC Date.
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                         This parameter must be a number between Min_Data = 1 and Max_Data = 31 */
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  uint8_t Year;     /*!< Specifies the RTC Date Year.
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                         This parameter must be a number between Min_Data = 0 and Max_Data = 99 */
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} RTC_DateTypeDef;

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HAL_StatusTypeDef HAL_RTC_GetTime(RTC_HandleTypeDef *hrtc, RTC_TimeTypeDef *sTime, uint32_t Format)
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{
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  uint32_t tmpreg;
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  /* Check the parameters */
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  assert_param(IS_RTC_FORMAT(Format));
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  /* Get subseconds structure field from the corresponding register*/
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  sTime->SubSeconds = READ_REG(hrtc->Instance->SSR);
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  /* Get SecondFraction structure field from the corresponding register field*/
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  sTime->SecondFraction = (uint32_t)(READ_REG(hrtc->Instance->PRER) & RTC_PRER_PREDIV_S);
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  /* Get the TR register */
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  tmpreg = (uint32_t)(READ_REG(hrtc->Instance->TR) & RTC_TR_RESERVED_MASK);
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  /* Fill the structure fields with the read parameters */
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  sTime->Hours = (uint8_t)((tmpreg & (RTC_TR_HT | RTC_TR_HU)) >> RTC_TR_HU_Pos);
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  sTime->Minutes = (uint8_t)((tmpreg & (RTC_TR_MNT | RTC_TR_MNU)) >> RTC_TR_MNU_Pos);
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  sTime->Seconds = (uint8_t)((tmpreg & (RTC_TR_ST | RTC_TR_SU)) >> RTC_TR_SU_Pos);
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  sTime->TimeFormat = (uint8_t)((tmpreg & (RTC_TR_PM)) >> RTC_TR_PM_Pos);
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  /* Check the input parameters format */
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  if (Format == RTC_FORMAT_BIN)
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  {
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    /* Convert the time structure parameters to Binary format */
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    sTime->Hours = (uint8_t)RTC_Bcd2ToByte(sTime->Hours);
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    sTime->Minutes = (uint8_t)RTC_Bcd2ToByte(sTime->Minutes);
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    sTime->Seconds = (uint8_t)RTC_Bcd2ToByte(sTime->Seconds);
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  }
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  return HAL_OK;
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}

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int my_printf(UART_HandleTypeDef *huart, const char *format, ...) {
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    char buffer[512];//创建字符缓冲区
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    va_list arg;//创建可变参数列表
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    int len;
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    va_start(arg, format);// 初始化可变参数列表，获取my_printf传入的可变参数
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    len = vsnprintf(buffer, sizeof(buffer), format, arg);// 将格式化后的可变参数传入缓存区
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    va_end(arg);// 结束可变参数列表
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    HAL_UART_Transmit(huart, (uint8_t *)buffer, (uint16_t)len, 0xFF); // 将字符缓存数组发送出去
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    return len;
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}