使用TI提供的内核,在sys/class/pwm目录下生成了ehrpwm.0:0和ehrpwm.0:1两个节点,我对这两个节点使用相同的命令(echo 1 > request;echo 100 > period_freq;echo 50 > duty_percent;echo 1 > run)设置波形,为什么ehrpwm.0:0输出的电压有3.3v,而ehrpwm.0:1输出的电压才800mv啊?请问这正常吗?
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