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tms320f28027PWM波形输出实验



我在contisuie中导入ccs5.5中的pwm输出实验程序Example_F2802xEPwm3UpAQ.c,我想要改变它的输出的pwm的周期为20ms,于是我试着改变TBPRD的值,TBPRD的值调大可以增大输出的pwm的周期,但是我试的最大只增大到了5点多ms,达不到20ms。不知值还需要改变程序的那些东西才能使输出pwm周期达到20ms。