STM32F030C6+nrf24l01 SPI配置

void SPI1_Init(void)

{

GPIO_InitTypeDef GPIO_InitStructure;

SPI_InitTypeDef  SPI1_InitStructure;

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);

RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);

//PB13:SCK PB14:MISO PB15:MOSI

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;

GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_UP;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;

GPIO_Init(GPIOB,&GPIO_InitStructure);

//PB10:CE   PB12:CS

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_12;

GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;

GPIO_Init(GPIOB, &GPIO_InitStructure);

//GPIO重映射

GPIO_PinAFConfig(GPIOB,GPIO_PinSource13 |GPIO_PinSource14 | GPIO_PinSource14,GPIO_AF_0);

SPI1_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_16;

SPI1_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;

SPI1_InitStructure.SPI_CPOL = SPI_CPOL_Low;

SPI1_InitStructure.SPI_CRCPolynomial = 7;

SPI1_InitStructure.SPI_DataSize = SPI_DataSize_8b;

SPI1_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;

SPI1_InitStructure.SPI_FirstBit  = SPI_FirstBit_MSB;

SPI1_InitStructure.SPI_Mode = SPI_Mode_Master;

SPI1_InitStructure.SPI_NSS = SPI_NSS_Soft;

SPI_Init(SPI1,&SPI1_InitStructure);

SPI_RxFIFOThresholdConfig(SPI1,SPI_RxFIFOThreshold_QF);

SPI_Cmd(SPI1,ENABLE);

// SPI1_ReadWriteByte(0xFF);

}

uint8_t SPI1_ReadWriteByte(uint8_t TxData)

{

uint8_t retry = 0;

while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET)

{

retry++;

if(retry > 200)

{

return 0;

}

}

SPI_SendData8(SPI1, TxData);

retry = 0;

while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET)

{

retry++;

if(retry > 200)

{

return 0;

}

}

return SPI_ReceiveData8(SPI1);

}