可以在STM32F407生成理想pwm波形，而且不用配置硬件环境，可以直接用，不用更改STM32板级设置，效果很好-PWM waveform can be generated in STM32F407 ideal, and need not to configure hardware environment, can use directly, need not modify the Settings of the STM32 board level, the effect is very go