定义
#define	LL_SPI_DATAWIDTH_4BIT (SPI_CR2_DS_0 \| SPI_CR2_DS_1)
#define	LL_SPI_DATAWIDTH_5BIT (SPI_CR2_DS_2)
#define	LL_SPI_DATAWIDTH_6BIT (SPI_CR2_DS_2 \| SPI_CR2_DS_0)
#define	LL_SPI_DATAWIDTH_7BIT (SPI_CR2_DS_2 \| SPI_CR2_DS_1)
#define	LL_SPI_DATAWIDTH_8BIT (SPI_CR2_DS_2 \| SPI_CR2_DS_1 \| SPI_CR2_DS_0)
#define	LL_SPI_DATAWIDTH_9BIT (SPI_CR2_DS_3)
#define	LL_SPI_DATAWIDTH_10BIT (SPI_CR2_DS_3 \| SPI_CR2_DS_0)
#define	LL_SPI_DATAWIDTH_11BIT (SPI_CR2_DS_3 \| SPI_CR2_DS_1)
#define	LL_SPI_DATAWIDTH_12BIT (SPI_CR2_DS_3 \| SPI_CR2_DS_1 \| SPI_CR2_DS_0)
#define	LL_SPI_DATAWIDTH_13BIT (SPI_CR2_DS_3 \| SPI_CR2_DS_2)
#define	LL_SPI_DATAWIDTH_14BIT (SPI_CR2_DS_3 \| SPI_CR2_DS_2 \| SPI_CR2_DS_0)
#define	LL_SPI_DATAWIDTH_15BIT (SPI_CR2_DS_3 \| SPI_CR2_DS_2 \| SPI_CR2_DS_1)
#define	LL_SPI_DATAWIDTH_16BIT (SPI_CR2_DS_3 \| SPI_CR2_DS_2 \| SPI_CR2_DS_1 \| SPI_CR2_DS_0)

定义文档

#define LL_SPI_DATAWIDTH_10BIT (SPI_CR2_DS_3 | SPI_CR2_DS_0)

SPI传输数据长度：10位

Definition at line 247 of file stm32g4xx_ll_spi.h.

#define LL_SPI_DATAWIDTH_11BIT (SPI_CR2_DS_3 | SPI_CR2_DS_1)

SPI传输数据长度：11位

Definition at line 248 of file stm32g4xx_ll_spi.h.

#define LL_SPI_DATAWIDTH_12BIT (SPI_CR2_DS_3 | SPI_CR2_DS_1 | SPI_CR2_DS_0)

SPI传输数据长度：12位

Definition at line 249 of file stm32g4xx_ll_spi.h.

#define LL_SPI_DATAWIDTH_13BIT (SPI_CR2_DS_3 | SPI_CR2_DS_2)

SPI传输数据长度：13位

Definition at line 250 of file stm32g4xx_ll_spi.h.

#define LL_SPI_DATAWIDTH_14BIT (SPI_CR2_DS_3 | SPI_CR2_DS_2 | SPI_CR2_DS_0)

SPI传输数据长度：14位

Definition at line 251 of file stm32g4xx_ll_spi.h.

#define LL_SPI_DATAWIDTH_15BIT (SPI_CR2_DS_3 | SPI_CR2_DS_2 | SPI_CR2_DS_1)

SPI传输数据长度：15位

Definition at line 252 of file stm32g4xx_ll_spi.h.

#define LL_SPI_DATAWIDTH_16BIT (SPI_CR2_DS_3 | SPI_CR2_DS_2 | SPI_CR2_DS_1 | SPI_CR2_DS_0)

SPI传输数据长度：16位

Definition at line 253 of file stm32g4xx_ll_spi.h.

#define LL_SPI_DATAWIDTH_4BIT (SPI_CR2_DS_0 | SPI_CR2_DS_1)

SPI传输数据长度：4位

Definition at line 241 of file stm32g4xx_ll_spi.h.

#define LL_SPI_DATAWIDTH_5BIT (SPI_CR2_DS_2)

SPI传输数据长度：5位

Definition at line 242 of file stm32g4xx_ll_spi.h.

#define LL_SPI_DATAWIDTH_6BIT (SPI_CR2_DS_2 | SPI_CR2_DS_0)

SPI传输数据长度：6位

Definition at line 243 of file stm32g4xx_ll_spi.h.

#define LL_SPI_DATAWIDTH_7BIT (SPI_CR2_DS_2 | SPI_CR2_DS_1)

SPI传输数据长度：7位

Definition at line 244 of file stm32g4xx_ll_spi.h.

#define LL_SPI_DATAWIDTH_8BIT (SPI_CR2_DS_2 | SPI_CR2_DS_1 | SPI_CR2_DS_0)

SPI传输数据长度：8位

Definition at line 245 of file stm32g4xx_ll_spi.h.

#define LL_SPI_DATAWIDTH_9BIT (SPI_CR2_DS_3)

SPI传输数据长度：9位

Definition at line 246 of file stm32g4xx_ll_spi.h.