STM32F051一配置DMA2程序出错

donsbin

很奇怪，配置DMA1很正常。在f0.h头文件找到的DMA2_Channel3
程序调用DMA_DeInit(DMA2_Channel3);就立马跳到HardFault_Handler
个人初步认为是寄存器地址的问题，不知道有没有配到相同问题的，求指导。附上代码
[mw_shl_code=c,true]
void MYDMA2_Init(void)
{
  DMA_InitTypeDef          DMA_InitStructure;       
  /* Enable the DMA peripheral */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE);
  DMA_DeInit(DMA2_Channel3);
  
  // DMA1 channels initial
  /* DMA Configuration -------------------------------------------------------*/
  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SPI1_DR_ADDRESS;
  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&SendBuff[0];
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
  DMA_InitStructure.DMA_BufferSize = SEND_SIZE;
  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_M2M = DMA_M2M_Disable;
  
  DMA_InitStructure.DMA_Priority  = DMA_Priority_Medium;//优先级别为中级
  DMA_Init(SPI1_TX_DMA2_CHANNEL, &DMA_InitStructure);       
       
}[/mw_shl_code]