STM8S103K3单片机PWM输出引脚与ADC干扰问题

HIJk123 · 发表于 2017-11-10 22:53:22

1.使用STM8S103K3单片机控制定时器1输出PWM,但是这个输出引脚与ADC引脚相同, 20脚输出波形会传入14脚,造成ADC测量数据不准确. 请问如何解决? 2.引脚分布图中为什么会有2个TIM1_CHx引脚?

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HIJk123 · 发表于 2017-11-10 22:53:23

问题已经解决,是互补比较输出被我打开了.. 关掉就好了
TIM1_OC1Init(TIM1_OCMODE_PWM2, TIM1_OUTPUTSTATE_DISABLE, TIM1_OUTPUTNSTATE_ENABLE, 0x0000, TIM1_OCPOLARITY_HIGH, TIM1_OCNPOLARITY_HIGH, TIM1_OCIDLESTATE_SET, TIM1_OCNIDLESTATE_SET);
TIM1_OC1Init(TIM1_OCMODE_PWM2, TIM1_OUTPUTSTATE_DISABLE, TIM1_OUTPUTNSTATE_DISABLE, 0x0000, TIM1_OCPOLARITY_HIGH, TIM1_OCNPOLARITY_HIGH, TIM1_OCIDLESTATE_SET, TIM1_OCNIDLESTATE_SET);