minigui程序，用来产生课交互性界面，也可以说是人机界面，与qt类似-minigui procedures used to generate the class interactive interface can also be said that the man-machine interface, and qt similar

qt没有自带的串口编程，我们一般都会使用第三方类。该文件可以直接使用。-qt serial programming of third-party class, can be used directly.

使用开发板为天嵌AM335X，PWM输入引脚为GPMC_A3，PWM设备文件是 /sys/class/pwm/ehrpwm.1:1 ，在QT界面中可以输入占空比和周期-The use of embedded development board for the day AM335X, PWM input pin GPMC_A3, PWM device file is /sys/class/pwm/ehrpwm.1:1 , in QT interface, you can enter duty c