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再次请教MCPWM脉宽的问题
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新會員
 
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把PWM1H与PWM1L设置为互补的情况，
问题是输出的时候总是脉宽一大一小 我设置PEPER=1000 PDC1=500，时基自由运行模式， 出来的情况是PWMH很小，PWML很大，相间有死区。 只好将PDC1一直增大，直到PDC1=1000，这时出来的波形不仅互补对称，而且PWM1H和PWM1L的宽度也一样，按道理说PDC1=PEPER是，是全开的状态才对啊！ 是我哪里设置错了，是运行模式不对还是其它什么原因？ 请有用过这个模块的不吝赐教！
發表於: 2005/12/12 14:49
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