如题，一开始一直进不去中断，考虑可能是配置问题，但是反复对照过类似代码，应该没有缺什么了。
刚刚把DMA_ClearFlag清除标志位的2句注释了，还进了中断，不过只有上电首次 ->中断配置应该是通的。
但整个代码呈现的效果就感觉DMA没有运行，不产生中断。麻烦帮忙看下是为什么
芯片是：CH32V208RBT6
关键代码如下：
#define DataBuf_Len 128
uint8_t RxData1[DataBuf_Len],RxData2[DataBuf_Len];
//SPI2初始化
void SPI_2_DMA_Initial(void)
{
GPIO_InitTypeDef GPIO_InitStructure = {0};
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitStructure.GPIO_Pin = SPI2_CSN; //此处引脚、端口都是正确的，因为轮询读取都是可以的
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(SPI2_SS_PORT, &GPIO_InitStructure);
GPIO_SetBits(SPI2_SS_PORT, SPI2_CSN);
GPIO_InitStructure.GPIO_Pin = SPI2_SCK;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(SPI2_DT_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = SPI2_MISO;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(SPI2_DT_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = SPI2_MOSI;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(SPI2_DT_PORT, &GPIO_InitStructure);
//------------------------------------------------------
DMA_InitTypeDef DMA_InitStructure = {0};
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
DMA_DeInit(DMA1_Channel4);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)(&(SPI2->DATAR));
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)RxData1;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 1; //后续使用时，会在函数内更改，此处就随便写了个
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel4, &DMA_InitStructure);
DMA_Cmd(DMA1_Channel4, DISABLE);
DMA_ClearFlag(DMA1_FLAG_GL4|DMA1_FLAG_TC4|DMA1_FLAG_HT4|DMA1_FLAG_TE4);
DMA_ITConfig(DMA1_Channel4,DMA_IT_TC,ENABLE);
//------------------------------------------------------
SPI_InitTypeDef SPI_InitStructure = {0};
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2,ENABLE);
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_4;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 0; //??
SPI_Init(SPI2, &SPI_InitStructure);
SPI_I2S_DMACmd(SPI2, SPI_I2S_DMAReq_Rx, ENABLE);
SPI_Cmd(SPI2, ENABLE);
//------------------------------------------------------
// NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //在其它地方有了，就注释了
NVIC_InitTypeDef NVIC_InitStructure = {0};
NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel4_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
NVIC_EnableIRQ(DMA1_Channel4_IRQn);
DMA_Cmd(DMA1_Channel4, DISABLE);
}
//收发单字节数据
uint8_t SPI_ReadWrite_1_Byte(uint8_t byte)
{
u8 i = 0;
SPI_I2S_SendData(SPI2, byte);
i = 0;
while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET)
{
i++;
if(i > 200)
return 0;
}
return SPI_I2S_ReceiveData(SPI2);
}
//用于读取W25Q64中地址为ReadAddr的bufsize长度数据，存储在temp_buf中
void SPI_FLASH_Get256(uint32_t ReadAddr, uint8_t *temp_buf, uint16_t bufsize)
{
SPI_CS_SET_LOW();// 选择 FLASH: CS 低电平
SPI_ReadWrite_1_Byte(CMD_READ_BUFF);
SPI_ReadWrite_1_Byte((ReadAddr >> 16) &0xFF);
SPI_ReadWrite_1_Byte((ReadAddr >> 8) &0xFF);
SPI_ReadWrite_1_Byte(ReadAddr&0xFF);
SPI_I2S_ReceiveData(SPI2);
DMA_Cmd(DMA1_Channel4,DISABLE);
DMA_ClearFlag(DMA1_FLAG_GL3|DMA1_FLAG_TC3|DMA1_FLAG_HT3|DMA1_FLAG_TE2);
DMA1_Channel4->CNTR = bufsize;
DMA1_Channel4->PADDR = (uint32_t)(&(SPI2->DATAR));
DMA1_Channel4->MADDR = (uint32_t)temp_buf;
DMA_Cmd(DMA1_Channel4,ENABLE);
}
void DMA1_Channel4_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void DMA1_Channel4_IRQHandler(void)
{
if(DMA_GetITStatus(DMA1_IT_TC4) !=RESET)
{
SPI_DMA_Read_Flag = 0x00;
DMA_Cmd(DMA1_Channel4,DISABLE);
SPI_CS_SET_HIGH();
DMA_ClearITPendingBit(DMA1_IT_GL4|DMA1_IT_TC4|DMA1_IT_HT4|DMA1_IT_TE4);
}
}