//（1）用定时器模块产生一个连续信号，要求信号参数为周期900ms，其中高电平30ms，精度不小于50us。采用ECAP模块测试该信号，将周期、高电平的值分别记录变量mySignalPeriod1和mySignalHigh1中。
//（2）用EPWM模块产生一个连续信号，要求信号参数为周期9ms，其中高电平300us。采用ECAP模块测试该信号，将周期、高电平的值分别记录变量mySignalPeriod2和mySignalHigh2中。
//观察这2个波形的周期和占空比有什么关系。(/ / (1) generates a continuous signal with the timer module, the signal parameters for the period 900ms, the high level of 30ms, the accuracy is not less than 50us. The ECAP module is used to test the signal, and the values of the periodic and high level are recorded in the variables mySignalPeriod1 and mySignalHigh1 respectively.
/ / (2) generates a continuous signal with EPWM module, signal parameters for the period 9ms, the high level of 300us. The ECAP module is used to test the signal, and the values of the periodic and high level are recorded in the variables mySignalPeriod2 and mySignalHigh2 respectively.
The 2 / observation period waveform and the duty ratio is what relation.)