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This page gives an overview of sysmonpsu driver which is available as part of the Xilinx Vivado and SDK distribution.
Table of Contents
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Introduction
A Zynq® UltraScale+™ MPSoC has one system monitoring (SYSMON) block in both the PS and the PL. The SYSMON block has a register interface that can be used to configure the
block and provide a capability of monitoring on and off chip voltages as well as junction temperature. The SYSMON block also has a built-in alarm generation logic that can be used
to interrupt the processor based on certain alarm conditions. For example, shutting down the system, based on an over-temperature (OT) alarm generated from the SYSMON block.
The PL SYSMON block has DRP, JTAG and I2C interfaces to enable monitoring from the external master and the capability to interface with an external power management bus
(PMBus) device. The PS SYSMON block has a built-in logic that enable access to the PS and PL SYSMON blocks.
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Driver Sources
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 Github |
|---|---|---|
sysmonpsu | <Vitis Install Directory>/data/embedded/XilinxProcessorIPLib/drivers/sysmonpsu_v2_7 | https://github.com/Xilinx/embeddedsw/tree/master/XilinxProcessorIPLib/drivers/sysmonpsu |
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/sysmonpsu
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The driver source code is organized into different folders.
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The table below shows the
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<Driver Name> driver source organization.
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Directory | Description |
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doc |
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Provides the API and data structure details |
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data | Driver .tcl and .mdd file |
examples | Example applications that show how to use the driver |
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features | |
src | Driver source files |
PS SYSMON Features
The PS-SYSMON block, provides the following features.
Remote temperature sensor capability
ADC supports 10-bit resolution with 1 MSPS sampling frequency
1v range with a common-mode, unipolar and bipolar
One, dedicated, low input resistance differential channel
16 auxiliary differential channels.
Supply monitor, multiple input channels
Stand-alone measurement control system including sequencing, alarms, averaging and min/max
Multi-rate sequencing capability operational on power-up in default mode
Internal reference options
Support for low power sleep mode.
Example Applications
Test Cases
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Refer to the driver examples directory for various example applications that exercise the different features of the driver. Each application is linked in the table below. The following sections describe the usage and expected output of the various applications. These example applications can be imported into the Vitis IDE from the Board Support Package settings tab.
Links to Examples
Examples Path:
https://github.com/Xilinx/embeddedsw/tree/master/XilinxProcessorIPLib/drivers/sysmonpsu/examples
Test Name | Example Source | Description |
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Polled Example |
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This is a polled mode example in which shows the usage of the driver/device in polled mode to check the on-chip temperature and voltages. |
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Interrupt Example |
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This is an interrupt mode example in which shows the usage of the driver/device in interrupt mode to handle on-chip temperature and voltage alarm interrupts. | |
Low Level Example |
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This example shows the usage of the basic functions driver in polled mode to check the on-chip temperature and voltages. |
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Single Channel Interrupt Example |
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This example shows the usage of the driver/device in single channel interrupt mode to handle End of Conversion (EOC) and VCCINT alarm interrupts. | |
AMS Example |
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This example is used to measure AMS control block voltages via single channel sequencer off mode. |
Changelog
2016.3
- Modified the driver code for MISRA-C 2012 compliance.
- Add support for enabling the SEQ_CH2_REG and SEQ_AVG2_REG
- Add support for configuring sequential input mode2 and acquisition2 registers.
2016.4
- None.
2017.1
- Fixed compilation warnings.
- Added voltage conversion macro for Vcco_psio
- Add PL reset check before PL sysmon reset
2017.2
- Corrected temperature conversion formulas
2017.3
- None.
2017.4
- None.
2018.1
- Add missing closing bracket in xsysmonpsu.h
- Add conversion support for Voltages having range of 1 volt
- Correct the AMS block channel numbers in BSP
- Add example for testing AMS block voltage measurement
- Add support to extract frequency information
- Update Sysmon clock divisor to the proper value
- Update examples to use higher clock frequency
- Remove looping check for PL accessible bit
- Remove usleeps from AMS CTRL example
2018.2
- None
2018.3
- Added initializer macro for Input Clock MHz
2019.1
- Misra C changes
2019.2
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Example Application Usage
Polled Example
This is a polled mode example in which shows the usage of the driver/device in polled mode to check the on-chip temperature and voltages.
Expected Output
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Entering the SysMon Polled Example.
The Current Temperature is 32.191 Centigrades.
The Maximum Temperature is 32.417 Centigrades.
The Minimum Temperature is 31.717 Centigrades.
The Current Supply 1 is 0.846 Volts.
The Maximum Supply 1 is 0.847 Volts.
The Minimum Supply 1 is 0.845 Volts.
The Current Supply 3 is 1.810 Volts.
The Maximum Supply 3 is 1.811 Volts.
The Minimum Supply 3 is 1.808 Volts.
Exiting the SysMon Polled Example.
Successfully ran Sysmon PS Polled Example Test |
Interrupt Example
This is an interrupt mode example in which shows the usage of the driver/device in interrupt mode to handle on-chip temperature and voltage alarm interrupts.
Expected Output
| Code Block |
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Entering the SysMonPsu Interrupt Example.
The Current Temperature is 33.598 Centigrade.
The Current Supply 1 is 0.845 Volts.
The Current Supply 3 is 1.809 Volts.
Temperature Alarm(0) HIGH Threshold is 23.596 Centigrade.
Temperature Alarm(0) LOW Threshold is 13.594 Centigrade.
Supply 1 Alarm(1) HIGH Threshold is 0.645 Volts.
Supply 1 Alarm(1) LOW Threshold is 1.045 Volts.
Supply 3 Alarm(3) HIGH Threshold is 1.609 Volts.
Supply 3 Alarm(3) LOW Threshold is 2.009 Volts.
Alarm 0 - Temperature alarm has occurred
The Current Temperature is 33.885 Centigrade.
The Maximum Temperature is 34.406 Centigrade.
The Minimum Temperature is 33.046 Centigrade.
The Current Supply 1 is 0.845 Volts.
The Maximum Supply 1 is 0.847 Volts.
The Minimum Supply 1 is 0.844 Volts.
The Current Supply 3 is 1.808 Volts.
The Maximum Supply 3 is 1.811 Volts.
The Minimum Supply 3 is 1.807 Volts.
Exiting the SysMon Interrupt Example.
Successfully ran SysMonPsu Interrupt PS Example Test |
Low Level Example
This example shows the usage of the basic functions driver in polled mode to check the on-chip temperature and voltages.
Expected Output
| Code Block |
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Successfully ran SysMonPsu low level Example Test |
Single Channel Interrupt Example
This example shows the usage of the driver/device in single channel interrupt mode to handle End of Conversion (EOC) and VCCINT alarm interrupts.
Expected Output
| Code Block |
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Successfully ran Sysmon Single Channel Interrupt Example Test |
AMS Example
This example is used to measure AMS control block voltages via single channel sequencer off mode.
Expected Output
| Code Block |
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Entering Sysmon AMS Example Test
1. EOC: Done , VCC_PSPLL: 1.202 Volts
2. EOC: Done , VCC_PSBATT: 1.636 Volts
3. EOC: Done , VCCINT: 0.844 Volts
4. EOC: Done , VCCBRAM: 0.845 Volts
5. EOC: Done , VCCAUX: 1.798 Volts
6. EOC: Done , VCC_PSDDRPLL: 1.805 Volts
7. EOC: Done , VCC_PSDDRPHY_REF: 0.217 Volts
8. EOC: Done , VCC_PSINTFP_DDR: 0.848 Volts
Successfully ran Sysmon AMS Example Test |
Changelog
https://github.com/Xilinx/embeddedsw/commits/master/XilinxProcessorIPLib/drivers/sysmonpsu
Related Links
NA