中断使能
[mw_shl_code=applescript,true]void SPI1_Init(void)

{
....//SPI配置
        SPI_Cmd(SPI1, ENABLE); //使能SPI外设
       
        NVIC_InitStructure.NVIC_IRQChannel = SPI1_IRQn;
        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3;
        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
        NVIC_Init(&NVIC_InitStructure);
}
[/mw_shl_code]

中断函数
[mw_shl_code=applescript,true]void SPI1_IRQHandler(void)
{
        if(FlagTest == 0) FlagTest = 1;
        if((SPI1->SR&1<<0)==1)
        {                                       
                Slave_Temp = SPI1_ReadByte(0x00);       
                SPI1_ReadWriteByte(0xaa);       
        }        
}
[/mw_shl_code]


程序就是不进入中断，求指导？