This page gives an overview of the bare-metal driver support for the System Watchdog Timer.
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 |
---|---|---|
wdtps | <Vitis Install Directory>/data/embedded/XilinxProcessorIPLib/drivers/wdtps | https://github.com/Xilinx/embeddedsw/blob/master/XilinxProcessorIPLib/drivers/wdtps |
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/blob/master/XilinxProcessorIPLib/drivers/wdtps |
The driver source code is organized into different folders. The table below shows the wdtps 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 , .mdd and .yaml files |
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 14: Timers and clocks in Zynqmp Trm
The Axi watchdog timer Standalone driver supports the below things.
All Controller Features supported.
Examples Path:
https://github.com/Xilinx/embeddedsw/blob/master/XilinxProcessorIPLib/drivers/wdtps/examples
Test name | Example source | Description |
---|---|---|
basic test | xwdtps_selftest_example.c | This example does a minimal test on the System Watchdog Timer device. |
Polled | xwdtps_polled_example.c | This example tests the functioning of the System WatchDog Timer driver in the polled mode |
Interrupt | xwdtps_intr_example.c | This example tests the functioning of the System WatchDog Timer driver in the Interrupt mode |
WDT SelfTest Example Test Successfully ran WDT SelfTest Example Test |
WDT Polled Mode Example Test Successfully ran WDT Polled Mode Example Test |
WDT Interrupt Example Test Successfully ran WDT Interrupt Example Test |
NA
https://github.com/Xilinx/embeddedsw/blob/xlnx_rel_v2023.2/doc/ChangeLog#L615
https://github.com/Xilinx/embeddedsw/blob/xlnx_rel_v2023.1/doc/ChangeLog#L3586
https://gitenterprise.xilinx.com/embeddedsw/embeddedsw/blob/xlnx_rel_v2022.1/doc/ChangeLog#L129
https://github.com/Xilinx/embeddedsw/blob/xlnx_rel_v2021.2/doc/ChangeLog#L251
https://github.com/Xilinx/embeddedsw/blob/xlnx_rel_v2021.1/doc/ChangeLog#L363
https://github.com/Xilinx/embeddedsw/blob/release-2020.2/doc/ChangeLog#L248
https://github.com/Xilinx/embeddedsw/blob/release-2020.1/doc/ChangeLog#L560
https://github.com/Xilinx/embeddedsw/blob/release-2019.2/doc/ChangeLog#L101
None
https://github.com/Xilinx/embeddedsw/blob/release-2018.3/doc/ChangeLog#L430