spi 与flash公用，flash 没问题，但是MB85RS1MT 死活没反应，读取id 或者写入数据再次读出来，都是0xff，不知道卡在哪，有人用这颗ic吗

void MX_SPI2_Init(void)
{
    /*##-1- Configure the SPI peripheral #######################################*/
    /* Set the SPI parameters */
    Spi2Handle.Instance               = SPIx ;
    Spi2Handle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
    Spi2Handle.Init.Direction         = SPI_DIRECTION_2LINES;
    Spi2Handle.Init.CLKPhase          = SPI_PHASE_2EDGE;
    Spi2Handle.Init.CLKPolarity       = SPI_POLARITY_HIGH;
    Spi2Handle.Init.CRCCalculation    = SPI_CRCCALCULATION_DISABLED;
    Spi2Handle.Init.CRCPolynomial     = 10;
    Spi2Handle.Init.DataSize          = SPI_DATASIZE_8BIT;
    Spi2Handle.Init.FirstBit          = SPI_FIRSTBIT_MSB;
    Spi2Handle.Init.NSS               = SPI_NSS_SOFT;
    Spi2Handle.Init.TIMode            = SPI_TIMODE_DISABLED;
    Spi2Handle.Init.Mode = SPI_MODE_MASTER;

    HAL_SPI_Init(&Spi2Handle);

}




static void SPIx_Error (void)
{
    /* De-initialize the SPI communication BUS */
    HAL_SPI_DeInit(&Spi2Handle);

    /* Re- Initiaize the SPI communication BUS */
    MX_SPI2_Init();
}




uint32_t MB85RS1MT_ReadID(void)
{
    uint32_t Temp = 0, Temp0 = 0, Temp1 = 0, Temp2 = 0,Temp3 = 0;

    /* Select the FLASH: Chip Select low */
    MB85RS1MT_CS_LOW();

    /* Send "RDID " instruction */
   MB85RS1MT_SPI_SendByte(MB85RS1MT_READ_ID );

    /* Read a byte from the FLASH */
    Temp0 = MB85RS1MT_SPI_SendByte(0xa5);

    /* Read a byte from the FLASH */
    Temp1 = MB85RS1MT_SPI_SendByte(0xa5);

    /* Read a byte from the FLASH */
    Temp2 = MB85RS1MT_SPI_SendByte(0xa5);
      /* Read a byte from the FLASH */
    Temp3 =MB85RS1MT_SPI_SendByte(0xa5);


    /* Deselect the FLASH: Chip Select high */
   MB85RS1MT_CS_HIGH();


    Temp = (Temp0 << 24) | (Temp1 << 16) | (Temp2<<8)|Temp3;

    return Temp;
}




uint8_t MB85RS1MT_SPI_ReadByte(void)
{
    return (MB85RS1MT_SPI_SendByte(0xa5));
}


uint8_t MB85RS1MT_SPI_SendByte(uint8_t byte)
{

    HAL_StatusTypeDef status = HAL_OK;
    uint8_t readvalue = 0x0;
    uint8_t writevalue = byte ;
    uint32_t spixTimeout=200 ;
    status = HAL_SPI_TransmitReceive(&Spi2Handle, (uint8_t *) &writevalue, (uint8_t *) &readvalue, 1, spixTimeout);

    /* Check the communication status */
    if(status != HAL_OK)
    {
        /* Execute user timeout callback */
        SPIx_Error();
    }

    return readvalue;
}

void MB85RS1MT_WriteDisable(void)
{
    /* Select the FLASH: Chip Select low */
   MB85RS1MT_CS_LOW();

    /* Send "Write Enable" instruction */
    MB85RS1MT_SPI_SendByte(MB85RS1MT_WRDI);

    /* Deselect the FLASH: Chip Select high */
   MB85RS1MT_CS_HIGH();
}



void MB85RS1MT_WriteEnable(void)
{
    /* Select the FLASH: Chip Select low */
   MB85RS1MT_CS_LOW();

    /* Send "Write Enable" instruction */
    MB85RS1MT_SPI_SendByte(MB85RS1MT_WREN);

    /* Deselect the FLASH: Chip Select high */
   MB85RS1MT_CS_HIGH();
}



void MB85RS1MT_Read_Bytes(uint8_t *data,uint32_t address,uint16_t len)//写入一个字节到特定地址空间
{       uint16_t i;
        uint8_t addr_tempH,addr_tempM,addr_tempL;
        
      
        MB85RS1MT_CS_LOW();
          MB85RS1MT_SPI_SendByte(MB85RS1MT_READ);
        MB85RS1MT_SPI_SendByte(address>>16);// 高8位地址
        MB85RS1MT_SPI_SendByte(address>>8);//中8位地址
        MB85RS1MT_SPI_SendByte(address); //低8位地址
        for(i=0;i<len;i++){
           data[i]= MB85RS1MT_SPI_SendByte(0x55);
        }
      
        MB85RS1MT_CS_HIGH();
        
      
}


void MB85RS1MT_Write_Bytes(uint8_t *data,uint32_t address,uint16_t len)//写入一个字节到特定地址空间
{       uint16_t i;
        uint8_t addr_tempH,addr_tempM,addr_tempL;
        
        MB85RS1MT_WriteEnable();
        MB85RS1MT_CS_LOW();
          MB85RS1MT_SPI_SendByte(MB85RS1MT_WRITE );
        MB85RS1MT_SPI_SendByte(address>>16);// 高8位地址
        MB85RS1MT_SPI_SendByte(address>>8);//中8位地址
        MB85RS1MT_SPI_SendByte(address); //低8位地址
        for(i=0;i<len;i++){
            MB85RS1MT_SPI_SendByte(data[i]);
        }
        MB85RS1MT_WriteDisable();
        MB85RS1MT_CS_HIGH();
        
      
}

uint8_t  MB85RS1MT_Read_Status(void)
{      
      
        uint8_t   flag;
      
        MB85RS1MT_CS_LOW();
        MB85RS1MT_SPI_SendByte(MB85RS1MT_RDSR  );
        flag= MB85RS1MT_SPI_ReadByte();
        
        MB85RS1MT_CS_HIGH();
          return flag;
      
}