SPI管脚语句使用

小不点 · 发表于 2015-10-15 08:38:24

SPI_InitTypeDef SPI_InitStructure;
/* SPI1 configuration ------------------------------------------------------*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
SPI_I2S_DeInit(SPI1);
SPI_Cmd(SPI1, DISABLE);

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_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_64;//64/128/256
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI1, &SPI_InitStructure);
SPI_Cmd(SPI1, ENABLE);

GPIO_ResetBits(GPIOA,GPIO_Pin_7);
求助各位大神配置为SPI 以后可以把某个管脚单独拉低吗？