1. 请参考以下程序,对SPI2进行配置,注意SPI2位于低速时钟线APB1上,数据传输格式为16位数据位,低位在前高位在后,SCK空闲为低电平,并在奇数边沿进行数据采样,其他参数不变,请对以下程序的关键参数和SPI编号进行修改。 RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1 ,ENABLE); SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; SPI_InitStructure.SPI_Mode = SPI_Mode_Master; SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; SPI_InitStructure.SPI_CPOL = SPI_CPOL_High; SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4; SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; SPI_InitStructure.SPI_CRCPolynomial = 7; SPI_Init(SPI1, &SPI_InitStructure);