HAL_SetDate将年份设置为错误的值

问题描述

我正在将STM32F030RCT6与CubeMX一起使用.设备是数据记录器，而RTC是不会失败的主要事物.在勘误表中，有一些有关RTC影子寄存器的信息.

I'm using STM32F030RCT6 with CubeMX. Device is a datalogger and RTC is the main thing that cannot fail. On Errata Sheet there is something about RTC Shadow Register.

我将CubeMX配置为不生成MX_RTC_Init()函数，并且到目前为止它一直可以正常工作. (我正在使用LSE)

I configured CubeMX to not generate MX_RTC_Init() function and it has been working normally so far. (I'm using LSE)

我需要从GSM时间更新时间/日期，但是当我使用HAL_SetDate()将年份设置为 18 时，经过一小段延迟后，我用HAL_GetDate()进行了阅读，sDate.Year给了我 20 .除了Year之外，其他值都是正确的.

I need to update the time/date from GSM time but when I set the year to 18 with HAL_SetDate() and after a small delay I read with HAL_GetDate(), sDate.Year gave me 20. Apart from Year, the other values are correct.

我尝试过的事情:

• 二手LSI
• 同时(HAL_SetDate！= HAL_GetDate)HAL_SetDate(ActualDate)
• 首先HAL_GetDate然后HAL_SetDate

• Used LSI
• while (HAL_SetDate != HAL_GetDate) HAL_SetDate(ActualDate)
• First HAL_GetDate then HAL_SetDate

我没有进步，甚至变得更糟，例如Month = 56，Day = 45等.

I got no progress and thing even got worse like Month = 56, Day = 45 etc.

先谢谢了.最好的问候.

Thanks in advance.Best regards.

推荐答案

值WeekDay必须设置为0到7之间的值

我有同样的问题.我发现问题是:未将值设置为WeekDay .在函数作用域中创建结构RTC_DateTypeDef时，字段WeekDay获得随机值.我发现:值WeekDay必须设置为0到7之间的值，如果超出此范围，则可以更改年份.

The value WeekDay must be set to a value between 0 to 7

I had the same problem. I found that the problem was: Not setting a value to WeekDay. When creating a struct RTC_DateTypeDef in a functions scope, the field WeekDay gets a random value. I discovered that: The value WeekDay must be set to a value between 0 to 7, if it is out of this range, it can change the year.

在功能HAL_RTC_SetDate中设置日期的代码:

The code for setting the date in function HAL_RTC_SetDate:

if (Format == RTC_FORMAT_BIN)
{
    assert_param(IS_RTC_YEAR(sDate->Year));
    assert_param(IS_RTC_MONTH(sDate->Month));
    assert_param(IS_RTC_DATE(sDate->Date));

    datetmpreg = (((uint32_t)RTC_ByteToBcd2(sDate->Year) << 16U) | \
                  ((uint32_t)RTC_ByteToBcd2(sDate->Month) << 8U) | \
                  ((uint32_t)RTC_ByteToBcd2(sDate->Date)) | \
                  ((uint32_t)sDate->WeekDay << 13U));
}
else
{
    assert_param(IS_RTC_YEAR(RTC_Bcd2ToByte(sDate->Year)));
    assert_param(IS_RTC_MONTH(RTC_Bcd2ToByte(sDate->Month)));
    assert_param(IS_RTC_DATE(RTC_Bcd2ToByte(sDate->Date)));

    datetmpreg = ((((uint32_t)sDate->Year) << 16U) | \
                  (((uint32_t)sDate->Month) << 8U) | \
                  ((uint32_t)sDate->Date) | \
                  (((uint32_t)sDate->WeekDay) << 13U));
}

• Date占据0-7位(8位):两个BCD数字.
• Month占用8-12位(5位):两个BCD数字，但左边的数字可以只能是0或1-> 5位就够了.
• WeekDay占据位13-15(3位):1个BCD数字，其值范围为1-7-> 3位够了.
• Year占据16-24位(9位).
• Date occupies bits 0-7 (8 bits): two BCD digits.
• Month occupies bits 8-12 (5 bits): two BCD digits but the left digit canonly be 0 or 1 -> 5 bits is enough.
• WeekDay occupies bits 13-15 (3 bits): one BCD digit with value range 1-7 -> 3 bitsis enough.
• Year occupies bits 16-24 (9 bits).

WeekDay大于7时，MSB为1，并且与Year的LSB重叠并且可以更改(如果LSB为0).

When WeekDay is greater than 7, the MSB is 1 and it overlaps with the LSB of Year and can change it (if the LSB is 0).

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