stm32 按键中断改变PWM输出的占空比，IAR工程-stm32 button to change the PWM output duty cycle interrupt, IAR project

在iar开发环境下上编写的通过STM32的PWM捕获遥控器发送的红外信号并且解码-In the development environment iar prepared on the capture of the remote controller transmits an infrared signal through the STM32 PWM and decodes