这是库自带的stm32f2xx_RTC.c,单步仿真发现 tmpreg =0x00170800 计算出来的日期是17年8月0号，
正确日期是7月31号，其他的时间小时分钟秒都是对的，有谁遇到过类似的吗？
/**
* @brief Get the RTC current date.
* @param RTC_Format: specifies the format of the returned parameters.
* This parameter can be one of the following values:
* @arg RTC_Format_BIN: Binary data format
* @arg RTC_Format_BCD: BCD data format
* @param RTC_DateStruct: pointer to a RTC_DateTypeDef structure that will
* contain the returned current date configuration.
* @retval None
*/
void RTC_GetDate(uint32_t RTC_Format, RTC_DateTypeDef* RTC_DateStruct)
{
uint32_t tmpreg = 0;
/* Check the parameters */
assert_param(IS_RTC_FORMAT(RTC_Format));
/* Get the RTC_TR register */
tmpreg = (uint32_t)(RTC->DR & RTC_DR_RESERVED_MASK);
/* Fill the structure fields with the read parameters */
RTC_DateStruct->RTC_Year = (uint8_t)((tmpreg & (RTC_DR_YT | RTC_DR_YU)) >> 16);
RTC_DateStruct->RTC_Month = (uint8_t)((tmpreg & (RTC_DR_MT | RTC_DR_MU)) >> 8);
RTC_DateStruct->RTC_Date = (uint8_t)(tmpreg & (RTC_DR_DT | RTC_DR_DU));
RTC_DateStruct->RTC_WeekDay = (uint8_t)((tmpreg & (RTC_DR_WDU)) >> 13);
/* Check the input parameters format */
if (RTC_Format == RTC_Format_BIN)
{
/* Convert the structure parameters to Binary format */
RTC_DateStruct->RTC_Year = (uint8_t)RTC_Bcd2ToByte(RTC_DateStruct->RTC_Year);
RTC_DateStruct->RTC_Month = (uint8_t)RTC_Bcd2ToByte(RTC_DateStruct->RTC_Month);
RTC_DateStruct->RTC_Date = (uint8_t)RTC_Bcd2ToByte(RTC_DateStruct->RTC_Date);
RTC_DateStruct->RTC_WeekDay = (uint8_t)(RTC_DateStruct->RTC_WeekDay);
}
} |
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