stm32的RTC最简单函数（TFT显示）-stm32 the RTC easiest function (TFT display)

设置STM32的内部实时时钟RTC，利用2.8寸的TFT—LCD模块来显示日期和时间，实现一个简易的时钟！-Set STM32' s internal real-time clock RTC, using the 2.8-inch TFT-LCD module to display the date and time, to achieve a simple clock!