This page gives an overview of the bare-metal driver support for AXI Watchdog Timer.
Table of Contents
Table of Contents exclude Table of Contents
Introduction
This page gives an overview of Axi Watchdog timer driver /Window watchdog timer which is available as part of the Xilinx Vivado and SDK distribution.
The Xilinx® LogiCORE? IP AXI4-Lite Timebase Watchdog Timer (WDT) is a 32-bit peripheral that provides a 32-bit free-running
timebase and watchdog timer.
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| 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 .mdd file.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 AXI_Timebase_Wdt_Doc
For a full list of features supported by this IP, please refer 59: System Watchdog Timer Versal Trm
Features
Controller Features supported
• Connects as a 32-bit slave on a AXI4-Lite interface• Watchdog timer with selectable timeout period and interrupt
• Configurable WDT enable: enable-once or enable-repeatedly
• One 32-bit free-running timebase counter with rollover interrupt-dual control register
Driver Supported Features
The Axi watchdog timer Standalone driver support the below things.
All Controller Features supported.
All Controller Features supported.
WWDT Driver support:
- Supports Generic Watch dog timer and polled and interrupt mode window watch dog feature.
- Q&A mode not implemented.
Known Issues and Limitataions
- None
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| Code Block |
|---|
xwdttb_low_level_example.c OUTPUT: Successfully ran WDTTB low level example. xwdttb_selftest_example.c OUTPUT: Successfully ran WDTTB self test example. xwdttb_example.c OUTPUT: Restart kick 1 ......................... Restart kick 2 ......................... Successfully ran WDTTB example xwdttb_intr_example.c OUTPUT: Successfully ran Window WDT interrupt example. xwdttb_winwdt_example.c OUTPUT: Restart kick 1 ......................... Restart kick 2 ......................... Successfully ran Window WDT example. xwdttb_winwdt_intr_example.c OUTPUT: Successfully ran Window WDT interrupt example. xwdttb_gwdt_selftest_example.c OUTPUT: Successfully ran GWDT self test example xwdttb_gwdt_example.c OUTPUT: Self test completed ................................................................................................................................. Refresh kick1 ................................................................................................................ Refresh kick2 ................................................................................................................ Refresh kick3 ................................................................................................................................................................................................................................................ Generic watchdog second window expired xwdttb_gwdt_intr_example.c OUTPUT: Successfully ran GWDT interrupt example |
ChangeLog
2023.2
https://github.com/Xilinx/embeddedsw/blob/xlnx_rel_v2023.2/doc/ChangeLog#L618
2023.1
None
2022.2
https://github.com/Xilinx/embeddedsw/blob/xlnx_rel_v2022.2/doc/ChangeLog#L201
2022.1
https://gitenterprise.xilinx.com/embeddedsw/embeddedsw/blob/xlnx_rel_v2022.1/doc/ChangeLog#L129
2021.2
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