DMA_BufferSize = FSMC_LCD_DATA_SIZE; DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable; DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word; DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; ...
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; 为什么是DMA_PeripheralDataSize_HalfWord,ADC转换结果寄存器是32位的,应该是DMA_PeripheralDataSize_Word的吧,如果只转一路的话,DMA_InitStructure.DMA_BufferSize 为4个字节吗? 举报 孙婷婷 2018-8-24 17:06:21 ADC的数据最大是12位...
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST; DMA_InitStructure.DMA_BufferSize = ADC_DATASIZE; DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; DMA_I...
voidMyDMA_Init(uint32_t AddrA,uint32_t AddrB,uint32_t Size){My_DMASize=Size;//传输计数器全局变量RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1,ENABLE);//开DMA时钟DMA_InitTypeDef DMA_InitStruct;DMA_InitStruct.DMA_PeripheralBaseAddr=AddrA;//外设站点基地址DMA_InitStruct.DMA_PeripheralDataSize=DMA...
//数据传输方向 Peripheral is source DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; //缓冲区大小 Number of data to be transferred (0 up to 65535).数据传输数目 DMA_InitStructure.DMA_BufferSize = BufferSize; // the Peripheral address register is incremented ...
void MyDMA_Init(uint32_t AddrA,uint32_t AddrB,uint32_t Size) { MyDMA_Size = Size; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1,ENABLE); DMA_InitTypeDef DMA_InitStruct; // 外设 起始地址 DMA_InitStruct.DMA_PeripheralBaseAddr = AddrA; ...
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t) RegularConvData_Tab; //内存地址 DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; //外设作为数据传输的来源 DMA_InitStructure.DMA_BufferSize = 8; // DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //外设地址寄存器不变 ...
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; 上面的这句是设置DMA在访问时每次操作的数据长度。有三种数据长度类型,前面已经讲过了,这里不在叙述。 DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; 与上面雷同。在此不再说明。
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory; DMA_InitStructure.DMA_BufferSize = ARRAYSIZE; DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; ...
DMA_InitStruct.DMA_MemoryBaseAddr = (u32)data; //Transfer direction, from memory to register DMA_InitStruct.DMA_DIR = DMA_DIR_PeripheralDST; DMA_InitStruct.DMA_BufferSize = 6; DMA_InitStruct.DMA_PeripheralInc = DMA_PeripheralInc_Disable; ...