This page gives an overview of tmrctr driver which is available as part of the Xilinx Vivado and SDK distribution.
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.
The driver source code is organized into different folders. The table below shows the tmrctr driver source organization.
Provides the API and data structure details
Driver .tcl and .mdd file
Example applications that show how to use the driver features
Driver source files
For a full list of features supported by this IP, please refer AXI Timer product guide.
Two identical modules each timer/counter module having two 32/64-bit counters
The timer/counters support polled mode, interrupt driven mode, enabling and disabling specific timers, PWM operation and the cascade mode operation to get a 64-bit timer/counter
Support both increment and decrement counting
Ability to produce output in PWM by using the two timer/counters as a pair with a specified frequency and duty factor
Known issues and Limitations
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
Example Application Usage
TMRCTR fast interrupt example:
The purpose of this example is to illustrate axi timer fast interrupt mode. It initializes a timer/counter and sets it up in the compare mode in the auto reload such that the periodic interrupt is generated.
Successfully ran Tmrctr fast interrupt Example
TMRCTR interrupt 64-bit example:
This example initializes a 64-bit timer/counter, which is only in cascade mode and sets it up in the compare mode in the auto reload such that the periodic interrupt is generated.
Successfully ran Tmrctr interrupt 64bit Example
TMRCTR interrupt example:
This example initializes a timer/counter and sets it up in the compare mode in the auto reload such that the periodic interrupt is generated.
Successfully ran Tmrctr interrupt Example
TMRCTR PWM example:
This example demonstrates the use of tmrctr PWM APIs.
Successfully ran Tmrctr PWM Example
TMRCTR low level example:
This example deals with the tmrctr low level API's. It starts the timer/counter such that its incrementing by default in the polled mode and checks if the count is changed.
Successfully ran Tmrctr lowlevel Example
TMRCTR polled example:
This example enables the auto reload mode and starts the timer/counter such that it starts incrementing in the polled mode and confirms if the count is being changed.
Successfully ran Tmrctr polled Example
TMRCTR selftest example:
This example performs a self test to ensure that the hardware was built correctly.
Successfully ran Tmrctr selftest Example
2020.1 - 2019.1