S12的TC1和TC2测周期源程序，以此作为范例，网友可参考程序利用剩余的TCx测量周期，脉宽，频率，进而测量PWM频率占空比等。-S12 of the TC1 and TC2 test cycle source, as an example, users can refer to procedures for use of the remaining TCx measurement cycle, pulse width, frequency, and then measure the freq