Table of Contents
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The AXI CMDA core is a soft Xilinx IP core for use with the Xilinx Vivado® Design Suite. The AXI CDMA provides high-bandwidth Direct Memory Access (DMA) between a memory-mapped source address and a memory-mapped destination address using the AXI4 protocol. An optional Scatter Gather (SG) feature can be used to offload control and sequencing tasks from the system CPU. Initialization, status, and control registers are accessed through an AXI4-Lite slave interface. For more information, please refer to the AXI CDMA product page which includes links to the official documentation and resource utilization.
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| Test Name | Example Source | Description |
|---|---|---|
| Scatter Gather DMA with Interrupts | xaxicdma_example_sg_intr.c | This example demonstrates how to transfer packets in interrupt mode when the core is configured in SG Mode. |
| Scatter Gather DMA with Polling | xaxicdma_example_sg_poll.c | This example demonstrates how to transfer packets in the polled mode when the core is configured in SG Mode. |
| Simple DMA with Interrupt | xaxicdma_example_simple_intr.c | This example demonstrates how to transfer packets in interrupt mode when the core is configured in simple DMA Mode. |
| Simple DMA with Polling | xaxicdma_example_simple_poll.c | This example demonstrates how to transfer packets in the polled mode when the core is configured in simple DMA Mode. |
| Hybrid(SG+ simple) with Interrupts | xaxicdma_example_hybrid_intr.c | This example demonstrates how to transfer packets in interrupt mode when the core is configured in hybrid(SG + simple) transfer Mode. |
| Hybrid(SG+ simple) with Polling | xaxicdma_example_hybrid_poll.c | This example demonstrates how to transfer packets in the polled mode when the core is configured in hybrid(SG + simple) transfer Mode. |
Example Application Usage
Scatter Gather with Interrupts
This example demonstrates how to transfer packets in interrupt mode when the core is configured in SG Mode.
Expected Output
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--- Entering main() --- Successfully ran XAxiCdma_SgIntr Example --- Exiting main() --- |
Scatter Gather with Polling
This example demonstrates how to transfer packets in the polled mode when the core is configured in SG Mode.
Expected Output
| Code Block | ||
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--- Entering main() --- Successfully ran XAxiCdma_SgPoll Example --- Exiting main() --- |
Simple DMA with Interrupts
This example demonstrates how to transfer packets in interrupt mode when the core is configured in simple DMA Mode.
Expected Output
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--- Entering main() --- Successfully ran XAxiCdma_SimpleIntr Example --- Exiting main() --- |
Simple DMA with Polling
This example demonstrates how to transfer packets in the polled mode when the core is configured in simple DMA Mode.
Expected Output
| Code Block | ||
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--- Entering main() --- Successfully ran AxiCdma_SimplePoll Example --- Exiting main() --- |
Hybrid(SG+ simple) with Interrupts
This example demonstrates how to transfer packets in interrupt mode when the core is configured in hybrid(SG + simple) transfer Mode.
Expected Output
| Code Block | ||
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--- Entering main() --- First simple transfer successful Scatter gather transfer successful Second simple transfer successful Successfully ran Axicdma Hybrid interrupt Example --- Exiting main() |
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Hybrid(SG+ simple) with Polling
This example demonstrates how to transfer packets in the polled mode when the core is configured in hybrid(SG + simple) transfer Mode.
Expected Output
| Code Block | ||
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--- Entering main() --- First simple transfer successful Scatter gather transfer successful Second simple transfer successful Successfully ran Axicdma Hybrid polled Example --- Exiting main() |
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