This page gives an overview of the bare-metal driver support for the Xilinx® LogiCORE™ Controller Area Network (CAN) soft IP.
Table of Contents
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Introduction
This page gives an overview of can driver which is available as part of the Xilinx Vivado and SDK distribution.
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The source code for the driver is included with the Vitis Unified Software Platform installation, as well as being available in the Xilinx Github repository.
Driver name | Path in vitis | path in Git Hub |
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can | <Vitis Install Directory>/data/embedded/XilinxProcessorIPLib/drivers/can | https://github.com/Xilinx/embeddedsw/tree/master/XilinxProcessorIPLib/drivers/can/ |
Info |
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Note: To view the sources for a particular release, use the rel-version tag in github. For example, for the 2020.1 release, the proper version of the code is: https://github.com/Xilinx/embeddedsw/tree/master/XilinxProcessorIPLib/drivers/can/ |
The driver source code is organized into different folders. The table below shows the CAN driver source organization.
Directory | Description |
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src | Driver source files, make and cmakelists file |
examples | Example applications that show how to use the driver features |
doc | Provides the API and data structure details |
data | Driver .tcl, .yaml and .mdd file |
Note: AMD Xilinx embeddedsw build flow is changed from 2023.2 release to adapt to the new system device tree based flow. For further information, refer to the wiki page Porting embeddedsw components to system device tree (SDT) based flow - Xilinx Wiki - Confluence (atlassian.net).
The .yaml(in data folder) and CMakeLists.txt(in src folder) files are needed for the System Device Tree based flow. The Driver .tcl and .mdd files are for the older build flow which will be deprecated in the future.
Driver Implementation
For a full list of features supported by this IP, please refer CAN_Doc
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https://github.com/Xilinx/embeddedsw/tree/master/XilinxProcessorIPLib/drivers/can/examples
Test Name | Example Source | Description |
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Polled | xcan_polled_example.c | It configures the CAN controller in loop back mode with no interrupt enabled and verifies the data received with data sent. |
Interrupt | xcan_intr_example.c | It configures the CAN controller in loop back mode with interrupts enabled and verifies the data received with data sent. |
Example Application Usage
CAN examples
Expected Output
xcan_polled_example.c
It configures the CAN controller in loop back mode with no interrupt enabled and verifies the data received with data sent.
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Xilinx/embeddedsw/blob/master/XilinxProcessorIPLib/drivers/can/examples/xcan_polled_example.c
Code Block |
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Successfully ran Can polled Example |
xcan_intr_example.c
It configures the CAN controller in loop back mode with interrupts enabled and verifies the data received with data sent.
https://gitenterprise.xilinxgithub.com/embeddedswXilinx/embeddedsw/blob/master/XilinxProcessorIPLib/drivers/can/examples/xcan_intr_example.c
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Example Design Architecture
NA
Known Issues and Limitations
None
Change Log
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2023.
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2
https://github.com/Xilinx/embeddedsw/blob/xilinx_v2021v2023.12/doc/ChangeLog#L459ChangeLog#L678
2022.2
None
2022.1
None
2021.2
None
2021.1
https://github.com/Xilinx/embeddedsw/blob/xlnx_rel_v2021.1/doc/ChangeLog#L411
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