This page gives an overview of SCU Watchdog BareMetal driver
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
generated: a system reset, an interrupt, or an external signal. The watchdog timeout period and the duration of any output signals are programmable.
For more information, please refer Chapter 14: Timers and clocks in Zynqmp Trmwhich includes links to the official documentation and resource utilization.
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| Driver Name | Path in Vitis | Path in GitHub |
|---|---|---|
| scuwdt | <Vitis Install Directory>/data/embedded/XilinxProcessorIPLib/drivers/scuwdt | https://github.com/Xilinx/embeddedsw/tree/master/XilinxProcessorIPLib/drivers/scuwdt |
| 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/scuwdt |
The driver source code is organized into different folders. The table below shows the scuwdt driver source organization.
| Directory | Description |
|---|---|
| src | Driver source files |
| examples | Example applications that show how to use the driver features |
| doc | Provides the API and data structure details |
| data | Driver .tcl and .mdd file |
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