请教SPI问题

rmwhite · 发表于 2019-1-21 12:58:47

配置SPI1时能够正常的读取flash信息，但是用SPI2的时候连SPI中时钟都没有，但是再三确定了配置函数不知道哪里出错

/*********************************  COPYRIGHT 2014 --------  *********  BEGIN OF FILE  ********************************/

/**********************************************************************
* file          : spi2.c
* author       : --
* version       : --
* date          : 2018-12-29
* brief       : spi1 program body
* Description : --
**********************************************************************/

/* Includes  == 文件包含 --------------------------------------------*/
#include "spi2.h"

/* Private typedef ==  私有类型 ----------------------------------*/
/* Private define    ==  私有定义 ----------------------------------*/

//-----------------------------------------//
#define sEE_SPI2                         SPI2
#define sEE_SPI2_CLK                   RCC_APB1Periph_SPI2

#define sEE_SPI2_SCK_PIN                GPIO_Pin_13                /* PB.13 */
#define sEE_SPI2_SCK_GPIO_PORT          GPIOB                      /* GPIOB */
#define sEE_SPI2_SCK_GPIO_CLK          RCC_AHBPeriph_GPIOB
#define sEE_SPI2_SCK_SOURCE             GPIO_PinSource13
#define sEE_SPI2_SCK_AF                GPIO_AF_SPI2

#define sEE_SPI2_MISO_PIN                GPIO_Pin_14             /* PB.14 */
#define sEE_SPI2_MISO_GPIO_PORT          GPIOB                      /* GPIOB */
#define sEE_SPI2_MISO_GPIO_CLK          RCC_AHBPeriph_GPIOB
#define sEE_SPI2_MISO_SOURCE             GPIO_PinSource14
#define sEE_SPI2_MISO_AF                GPIO_AF_SPI2

#define sEE_SPI2_MOSI_PIN                GPIO_Pin_15                /* PB.15 */
#define sEE_SPI2_MOSI_GPIO_PORT          GPIOA                   /* GPIOB */
#define sEE_SPI2_MOSI_GPIO_CLK          RCC_AHBPeriph_GPIOB
#define sEE_SPI2_MOSI_SOURCE             GPIO_PinSource15
#define sEE_SPI2_MOSI_AF                GPIO_AF_SPI2

/* Private macro    ==  私有宏 ------------------------------------*/
/* Private variables  ==  私有变量 ----------------------------------*/


/* Private functions  ==  私有函数定义 ------------------------------*/

/**********************************************************************
* @Fuctionname : None
* @Brief       : None
* @Input       : None
* @Output       : None
* @Return       : None
* @Remark       : None
**********************************************************************/
void SPI2_Init(void)
{
      GPIO_InitTypeDef  GPIO_InitStructure;
      SPI_InitTypeDef SPI_InitStructure;

      /*!< sEE_CS_GPIO, sEE_MOSI_GPIO, sEE_MISO_GPIO and sEE_SCK_GPIO
         Periph clock enable */
      RCC_AHBPeriphClockCmd(sEE_SPI2_MOSI_GPIO_CLK | sEE_SPI2_MISO_GPIO_CLK | sEE_SPI2_SCK_GPIO_CLK , ENABLE);

      /*!< sEE Periph clock enable */
      RCC_APB1PeriphClockCmd(sEE_SPI2_CLK, ENABLE);

      /*!< Configure sEE pins: SCK */
      GPIO_InitStructure.GPIO_Pin = sEE_SPI2_SCK_PIN;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
      GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
      GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_UP;
      GPIO_Init(sEE_SPI2_SCK_GPIO_PORT, &GPIO_InitStructure);

      /*!< Configure sEE_SPI pins: MISO */
      GPIO_InitStructure.GPIO_Pin = sEE_SPI2_MISO_PIN;
      GPIO_Init(sEE_SPI2_MISO_GPIO_PORT, &GPIO_InitStructure);

      /*!< Configure sEE_SPI pins: MOSI */
      GPIO_InitStructure.GPIO_Pin = sEE_SPI2_MOSI_PIN;
      GPIO_Init(sEE_SPI2_MOSI_GPIO_PORT, &GPIO_InitStructure);

      /* Connect PXx to sEE_SPI_SCK */
      GPIO_PinAFConfig(sEE_SPI2_SCK_GPIO_PORT, sEE_SPI2_SCK_SOURCE, sEE_SPI2_SCK_AF);

      /* Connect PXx to sEE_SPI_MISO */
      GPIO_PinAFConfig(sEE_SPI2_MISO_GPIO_PORT, sEE_SPI2_MISO_SOURCE, sEE_SPI2_MISO_AF);

      /* Connect PXx to sEE_SPI_MOSI */
      GPIO_PinAFConfig(sEE_SPI2_MOSI_GPIO_PORT, sEE_SPI2_MOSI_SOURCE, sEE_SPI2_MOSI_AF);



      /*!< sEE SPI Config */
      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_NSS_Hard;//SPI_NSS_Soft;
      SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8;
      SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
      SPI_InitStructure.SPI_CRCPolynomial = 7;
      SPI_Init(sEE_SPI2, &SPI_InitStructure);

      SPI_Cmd(sEE_SPI2, ENABLE); /*!< sEE_SPI enable */

}

/**********************************************************************
* @Fuctionname : None
* @Brief       : None
* @Input       : None
* @Output       : None
* @Return       : None
* @Remark       : None
**********************************************************************/
u8 SPI2_ReadWriteByte(u8 dat)
{
      /*!< Loop while DR register in not empty */
      while (SPI_I2S_GetFlagStatus(sEE_SPI2, SPI_I2S_FLAG_TXE) == RESET);

      /*!< Send byte through the SPI peripheral */
      SPI_SendData(sEE_SPI2, dat);

      /*!< Wait to receive a byte */
      while (SPI_I2S_GetFlagStatus(sEE_SPI2, SPI_I2S_FLAG_RXNE) == RESET);

      /*!< Return the byte read from the SPI bus */
      return (uint8_t)SPI_ReceiveData(sEE_SPI2);
}

/*********************************  COPYRIGHT 2014 --------  *********  END OF FILE  **********************************/