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方案：PD7作为ADC的采集通道，PD6作为PWM通道（工作频率38K，占比50%）。问题：当使能PWM（pwm_start()）后，ADC3的AD值，多次采集的数值之间的误差大（+—50），当关闭PWM，采集的数值之间误差就小（+—20），请问是什么原因引起的呢？？谢谢！！
@galaxy 已找到原因；PWM线路影响到sersor