ʾʹõԴ
LPTIM1_IN1   ----- PB5
LED1             ----- PB14


ʾḶ́
1ϵϵͳʱӣRCH2ƵΪʱԴ8MSystickʱӳʼ
2LED1GPIOʼLED1ʼ״̬Ϩ𣬳ʼLPTIM1_INţ
3ʼLPTIM1LPTIM1ʱΪRCLʱΪⲿʱӣ
4NVICʼʹLPTIM1NVICжϲжȼ
5LED1
6ʹLPTIM1Զƥжϣ
7MCUStopģʽ
8ʱLPTIM1_IN1ؼ1000ԶƥжϣMCU
9MCUѺLED1200ms˸

ע⣺
1MCUѺϵͳʱԶлΪRCHSYSRCHķƵRCHDIVʾΪ2Ƶ
