You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
|
|
|
# RTC
|
|
|
|
|
|
|
|
|
|
|
|
- 配置：System Core，SYS，Debug配置为SerialWire
|
|
|
|
|
|
|
|
|
|
|
|
> 因为STM32默认占用PB4等IO作为JTAG引脚
|
|
|
|
|
|
|
|
|
|
|
|
- （可选）配置RCC，LowSpeedClock（LSE）配置为Crystal/Ceramic Resonator
|
|
|
|
|
|
|
|
|
|
|
|
- 配置：Timers，RTC
|
|
|
|
|
|
- Activate Clock Source
|
|
|
|
|
|
- Activate Calendar
|
|
|
|
|
|
- 配置一下初始时间、日期
|
|
|
|
|
|
|
|
|
|
|
|
- 配置：Connectivity，USART2，Mode配置为Asynchronous
|
|
|
|
|
|
|
|
|
|
|
|
- （可选）在Project Manager，Code Generator里勾选Generate peripheral initialization as a pair of '.c/.h' files per peripheral，这样会给每个外设的初始化函数生成单独.c/.h文件，会使main.c更简洁
|
|
|
|
|
|
|
|
|
|
|
|
- （可选）在clock configuration里把低速时钟源选为LSE
|
|
|
|
|
|
|
|
|
|
|
|
- （可选）如果想掉保持时钟，需要在RTC_Init函数中，屏蔽掉设置时间的代码，这样每次上电时就不会重新设置时间了，就可以做到时间保持
|
|
|
|
|
|
|
|
|
|
|
|
- 注意：HAL_RTC_GetTime得到的是BCD码的格式，需要/16*10+%16转换成10进制数字
|
|
|
|
|
|
|
