驱动使能极性

定义
#define	LL_LPUART_DE_POLARITY_HIGH   0x00000000U
#define	LL_LPUART_DE_POLARITY_LOW   USART_CR3_DEP

---

定义文档

#define LL_LPUART_DE_POLARITY_HIGH   0x00000000U

DE信号为高电平有效

Definition at line 400 of file stm32g4xx_ll_lpuart.h.

#define LL_LPUART_DE_POLARITY_LOW   USART_CR3_DEP

DE信号为低电平有效

Definition at line 401 of file stm32g4xx_ll_lpuart.h.