外部触发极性

定义
#define	LL_TIM_ETR_POLARITY_NONINVERTED   0x00000000U
#define	LL_TIM_ETR_POLARITY_INVERTED   TIM_SMCR_ETP

---

定义文档

#define LL_TIM_ETR_POLARITY_INVERTED   TIM_SMCR_ETP

ETR反相，低电平或下降沿有效

Definition at line 989 of file stm32g4xx_ll_tim.h.

#define LL_TIM_ETR_POLARITY_NONINVERTED   0x00000000U

ETR非反相，高电平或上升沿有效

Definition at line 988 of file stm32g4xx_ll_tim.h.