This page gives an overview of the bare-metal driver support for the PS CAN.
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 Github |
---|---|---|
canps | <Vitis Install Directory>/data/embedded/XilinxProcessorIPLib/drivers/canps | https://github.com/Xilinx/embeddedsw/tree/master/XilinxProcessorIPLib/drivers/canps |
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/canps |
The driver source code is organized into different folders. The table below shows the canps driver source organization.
Directory | Description |
---|---|
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.
For a full list of features supported by this IP, please refer Chapter 20: Can Controller in Zynqmp Trm
Examples Path:
https://github.com/Xilinx/embeddedsw/tree/master/XilinxProcessorIPLib/drivers/canps/examples
Test Name | Source | Description |
---|---|---|
Polled | xcanps_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 | xcanps_intr_example.c | It configures the CAN controller in loop back mode with interrupts enabled and verifies the data received with data sent |
Watermark | xcanps_watermark_intr_example.c | It configures the CAN controller in loop back mode with rx and tx water mark interrupts enabled with some RX and TX threshold. |
Polled Mode test:: CAN Polled Mode Example Test Successfully ran CAN Polled Mode Example Test |
Interrupt Mode test: CAN Interrupt Example Test Successfully ran CAN Interrupt Example Test |
Water Mark Test: CAN Watermark Example Test Successfully ran CAN Watermark Example Test |