原厂库有个问题 community.st.com/s/question/…
__HAL_TIM_SET_CAPTUREPOLARITY(&htim4,TIM_CHANNEL_4,TIM_INPUTCHANNELPOLARITY_FALLING);//切换捕获极性为下降沿 TIM_RESET_CAPTUREPOLARITY三目运算出错
__HAL_TIM_SET_CAPTUREPOLARITY的里面有两个函数TIM_RESET_CAPTUREPOLARITY((__HANDLE__), (__CHANNEL__));
TIM_SET_CAPTUREPOLARITY((__HANDLE__), (__CHANNEL__), (__POLARITY__)); 第一个有问题，第二个没问题
改#define TIM_RESET_CAPTUREPOLARITY(__HANDLE__, __CHANNEL__) \
(((__CHANNEL__) == TIM_CHANNEL_1) ? ((__HANDLE__)->Instance->CCER &= ~(TIM_CCER_CC1P | TIM_CCER_CC1NP))) :\
((__CHANNEL__) == TIM_CHANNEL_2) ? ((__HANDLE__)->Instance->CCER &= ~(TIM_CCER_CC2P | TIM_CCER_CC2NP)) :\
((__CHANNEL__) == TIM_CHANNEL_3) ? ((__HANDLE__)->Instance->CCER &= ~(TIM_CCER_CC3P)) :\
((__HANDLE__)->Instance->CCER &= ~(TIM_CCER_CC4P)))
为
#define TIM_RESET_CAPTUREPOLARITY(__HANDLE__, __CHANNEL__) \
(((__CHANNEL__) == TIM_CHANNEL_1) ? ((__HANDLE__)->Instance->CCER &= ~(TIM_CCER_CC1P | TIM_CCER_CC1NP)) :\
((__CHANNEL__) == TIM_CHANNEL_2) ? ((__HANDLE__)->Instance->CCER &= ~(TIM_CCER_CC2P | TIM_CCER_CC2NP)) :\
((__CHANNEL__) == TIM_CHANNEL_3) ? ((__HANDLE__)->Instance->CCER &= ~(TIM_CCER_CC3P)) :\
((__HANDLE__)->Instance->CCER &= ~(TIM_CCER_CC4P)))
