DMA中断代码如下：void DMA_RX_IRQHandler(void){ uint8_t tmp;if(DMA_GetITStatus(DMA_RX_Stream,...
DMA方式的特点为: 数据传送的基本单位是数据块。 数据是直接在设备─内存之间传送的。 仅在传送一个或多个数据块的开始和结束时才需要CPU对I/O的干预, 传送工作本身是由DMA控制器完成的。 2、DMA控制器的组成 (1)主机与DMA控制器的接口 数据寄存器(DR) 内存地址寄存器(MAR) 数据计数器(DC) 命令/状态寄存器...
DMA MEMORY TRANSFER CONTROLLERPURPOSE: To simplify DMA request control and to reduce the hardware at the time of memory-to-memory DMA transfer.ICHINOSE MASAHIKO一ノ瀬 雅彦
ALL memory can be accessed in native DMA mode (FPGA hardware). ALL memory can be accessed if kernel module (KMD) is loaded. Raw PCIe TLP access (FPGA hardware). Mount live RAM as file [Linux, Windows, macOS*]. Mount file system as drive [Linux, Windows, macOS*]. ...
The PCI Express® DMA reference design using external memory highlights the performance of theIntel®Arria® V,Intel® Arria® 10,Cyclone® Vand Stratix® V Hard IP for PCI Express using the Avalon® Memory-Mapped (Avalon-MM) interface. The design includes a ...
Native层打开V4L2 V4L2_MEMORY_DMA2020-11-14 上传大小:21KB 所需:50积分/C币 linux qt4.7 v4l2 YUV(YUYV) mmap 显示视频 可直接编译 只针对USB摄像头,yuyv4:2:2格式,其它yuv格式自己改 可以直接编译,那个配置文件不要删, 视频上的那个矩形只能移动左上和右下两个点 ...
Agreement : This example shows usage of DMA to transfer ADC results into memory buffe LA_OPT45 v1 March 2013 IMPORTANT. Read the following NXP Software License Agreement (“Agreement”) completely. By selecting the “I Accept” button at the end of this page, you indicate that you accept ...
2. Streaming DMA AFU Description 3. Memory Map and Address Spaces 3.1. Streaming DMA AFU Memory Map 3.2. Memory-to-Stream DMA BBB Memory Map 3.3. Stream-to-Memory DMA BBB Memory Map 4. Software Programming Model 5. Running the AFU Example ...
dma_addr_t phys;segment = dma_pool_alloc(chan->desc_pool, GFP_ATOMIC, &phys); if (!segment) return NULL;memset(segment, 0, sizeof(*segment)); segment->phys = phys;return segment; }/** * xilinx_axidma_alloc_tx_segment - Allocate transaction segment ...
INTER-MEMORY INTELLIGENT DMA CONTROLLER 专利名称：INTER-MEMORY INTELLIGENT DMA CONTROLLER 发明人：SAWATANI AKEMI 申请号：JP24069684 申请日：19841116 公开号：JPS61120262A 公开日：19860607 专利内容由知识产权出版社提供 摘要：PURPOSE:To attain a effective processing cycle by making use of a fact that an ...