stm32l151低功耗代码，三种模式的低功耗程序，如何rtc alarm唤醒等(Stm32l151 low power code, three modes of low-power program, how to wake up RTC alarm, etc.)

基于stm32设计的低功耗程序，亲测可用(STM32 low power design)

将STM32F的TMP102驱动程序移植到低功耗的L151，主要改动在于时钟和GPIO设置，已实测可用。(Migrate the TMP102 driver of STM32F to the low-power L151. The main changes are the clock and GPIO settings, which have been tested and available.)