This page gives an overview of the bare-metal driver support for the System Watchdog Timer.
Table of Contents
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Introduction
The watchdog timer can be used to prevent system lockup; for example, when software becomes trapped in a deadlock.In normal operation, the user restarts the watchdog at regular intervals before the timer counts down to zero.
In cases where the timer does reach zero and the watchdog is enabled, one or a combination of the following signals is
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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/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 CMakeListsand CMakeLists.txt(in src folder) files
would be used inare 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 Chapter 14: Timers and clocks in Zynqmp Trm
Features
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