宏定义
#define	__LL_DMA_GET_INSTANCE(__CHANNEL_INSTANCE__) (((uint32_t)(__CHANNEL_INSTANCE__) > ((uint32_t)DMA1_Channel8)) ? DMA2 : DMA1)
	将DMAx_Channely转换为DMAx。
#define	__LL_DMA_GET_CHANNEL(__CHANNEL_INSTANCE__)
	将DMAx_Channely转换为LL_DMA_CHANNEL_y。
#define	__LL_DMA_GET_CHANNEL_INSTANCE(__DMA_INSTANCE__, __CHANNEL__)
	将DMA实例DMAx和LL_DMA_CHANNEL_y转换为DMAx_Channely。

宏定义文档

#define __LL_DMA_GET_CHANNEL ( __CHANNEL_INSTANCE__ )

值：

(((uint32_t)(__CHANNEL_INSTANCE__) == ((uint32_t)DMA1_Channel1)) ? LL_DMA_CHANNEL_1 : \
   ((uint32_t)(__CHANNEL_INSTANCE__) == ((uint32_t)DMA2_Channel1)) ? LL_DMA_CHANNEL_1 : \
   ((uint32_t)(__CHANNEL_INSTANCE__) == ((uint32_t)DMA1_Channel2)) ? LL_DMA_CHANNEL_2 : \
   ((uint32_t)(__CHANNEL_INSTANCE__) == ((uint32_t)DMA2_Channel2)) ? LL_DMA_CHANNEL_2 : \
   ((uint32_t)(__CHANNEL_INSTANCE__) == ((uint32_t)DMA1_Channel3)) ? LL_DMA_CHANNEL_3 : \
   ((uint32_t)(__CHANNEL_INSTANCE__) == ((uint32_t)DMA2_Channel3)) ? LL_DMA_CHANNEL_3 : \
   ((uint32_t)(__CHANNEL_INSTANCE__) == ((uint32_t)DMA1_Channel4)) ? LL_DMA_CHANNEL_4 : \
   ((uint32_t)(__CHANNEL_INSTANCE__) == ((uint32_t)DMA2_Channel4)) ? LL_DMA_CHANNEL_4 : \
   ((uint32_t)(__CHANNEL_INSTANCE__) == ((uint32_t)DMA1_Channel5)) ? LL_DMA_CHANNEL_5 : \
   ((uint32_t)(__CHANNEL_INSTANCE__) == ((uint32_t)DMA2_Channel5)) ? LL_DMA_CHANNEL_5 : \
   ((uint32_t)(__CHANNEL_INSTANCE__) == ((uint32_t)DMA1_Channel6)) ? LL_DMA_CHANNEL_6 : \
   ((uint32_t)(__CHANNEL_INSTANCE__) == ((uint32_t)DMA2_Channel6)) ? LL_DMA_CHANNEL_6 : \
   ((uint32_t)(__CHANNEL_INSTANCE__) == ((uint32_t)DMA1_Channel7)) ? LL_DMA_CHANNEL_7 : \
   ((uint32_t)(__CHANNEL_INSTANCE__) == ((uint32_t)DMA2_Channel7)) ? LL_DMA_CHANNEL_7 : \
   LL_DMA_CHANNEL_8)

将DMAx_Channely转换为LL_DMA_CHANNEL_y。

参数：

__CHANNEL_INSTANCE__ DMAx_Channely

返回值：

LL_DMA_CHANNEL_y

定义于文件stm32g4xx_ll_dma.h的第414行。

#define __LL_DMA_GET_CHANNEL_INSTANCE	(	__DMA_INSTANCE__,
		__CHANNEL__
	)

值：

((((uint32_t)(__DMA_INSTANCE__) == ((uint32_t)DMA1)) && ((uint32_t)(__CHANNEL__) == ((uint32_t)LL_DMA_CHANNEL_1))) ? DMA1_Channel1 : \
   (((uint32_t)(__DMA_INSTANCE__) == ((uint32_t)DMA2)) && ((uint32_t)(__CHANNEL__) == ((uint32_t)LL_DMA_CHANNEL_1))) ? DMA2_Channel1 : \
   (((uint32_t)(__DMA_INSTANCE__) == ((uint32_t)DMA1)) && ((uint32_t)(__CHANNEL__) == ((uint32_t)LL_DMA_CHANNEL_2))) ? DMA1_Channel2 : \
   (((uint32_t)(__DMA_INSTANCE__) == ((uint32_t)DMA2)) && ((uint32_t)(__CHANNEL__) == ((uint32_t)LL_DMA_CHANNEL_2))) ? DMA2_Channel2 : \
   (((uint32_t)(__DMA_INSTANCE__) == ((uint32_t)DMA1)) && ((uint32_t)(__CHANNEL__) == ((uint32_t)LL_DMA_CHANNEL_3))) ? DMA1_Channel3 : \
   (((uint32_t)(__DMA_INSTANCE__) == ((uint32_t)DMA2)) && ((uint32_t)(__CHANNEL__) == ((uint32_t)LL_DMA_CHANNEL_3))) ? DMA2_Channel3 : \
   (((uint32_t)(__DMA_INSTANCE__) == ((uint32_t)DMA1)) && ((uint32_t)(__CHANNEL__) == ((uint32_t)LL_DMA_CHANNEL_4))) ? DMA1_Channel4 : \
   (((uint32_t)(__DMA_INSTANCE__) == ((uint32_t)DMA2)) && ((uint32_t)(__CHANNEL__) == ((uint32_t)LL_DMA_CHANNEL_4))) ? DMA2_Channel4 : \
   (((uint32_t)(__DMA_INSTANCE__) == ((uint32_t)DMA1)) && ((uint32_t)(__CHANNEL__) == ((uint32_t)LL_DMA_CHANNEL_5))) ? DMA1_Channel5 : \
   (((uint32_t)(__DMA_INSTANCE__) == ((uint32_t)DMA2)) && ((uint32_t)(__CHANNEL__) == ((uint32_t)LL_DMA_CHANNEL_5))) ? DMA2_Channel5 : \
   (((uint32_t)(__DMA_INSTANCE__) == ((uint32_t)DMA1)) && ((uint32_t)(__CHANNEL__) == ((uint32_t)LL_DMA_CHANNEL_6))) ? DMA1_Channel6 : \
   (((uint32_t)(__DMA_INSTANCE__) == ((uint32_t)DMA2)) && ((uint32_t)(__CHANNEL__) == ((uint32_t)LL_DMA_CHANNEL_6))) ? DMA2_Channel6 : \
   (((uint32_t)(__DMA_INSTANCE__) == ((uint32_t)DMA1)) && ((uint32_t)(__CHANNEL__) == ((uint32_t)LL_DMA_CHANNEL_7))) ? DMA1_Channel7 : \
   (((uint32_t)(__DMA_INSTANCE__) == ((uint32_t)DMA2)) && ((uint32_t)(__CHANNEL__) == ((uint32_t)LL_DMA_CHANNEL_7))) ? DMA2_Channel7 : \
   (((uint32_t)(__DMA_INSTANCE__) == ((uint32_t)DMA1)) && ((uint32_t)(__CHANNEL__) == ((uint32_t)LL_DMA_CHANNEL_8))) ? DMA1_Channel8 : \
   DMA2_Channel8)

将DMA实例DMAx和LL_DMA_CHANNEL_y转换为DMAx_Channely。

参数：

__DMA_INSTANCE__	DMAx
__CHANNEL__	LL_DMA_CHANNEL_y

返回值：

DMAx_Channely

定义于文件stm32g4xx_ll_dma.h的第452行。

被LL_DMA_DeInit()引用。

#define __LL_DMA_GET_INSTANCE ( __CHANNEL_INSTANCE__ ) (((uint32_t)(__CHANNEL_INSTANCE__) > ((uint32_t)DMA1_Channel8)) ? DMA2 : DMA1)

将DMAx_Channely转换为DMAx。

参数：

__CHANNEL_INSTANCE__ DMAx_Channely

返回值：

DMAx

定义于文件stm32g4xx_ll_dma.h的第402行。