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: The .yaml(in data folder) and CMakeLists.txt(in src folder) files would be used in System Device Tree based flow.
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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Example Design Architecture
NA
ChangeLog
2023.2
https://github.com/Xilinx/embeddedsw/blob/xlnx_rel_v2023.2/doc/ChangeLog#L615
2023.1
https://github.com/Xilinx/embeddedsw/blob/xlnx_rel_v2023.1/doc/ChangeLog#L3586
2022.2
- None
2022.1
https://gitenterprise.xilinx.com/embeddedsw/embeddedsw/blob/xlnx_rel_v2022.1/doc/ChangeLog#L129
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