PDL: TCPWM counter using Smart I/O

This code example uses the signal to user LED1, which switches depending on the level of the CC0 match interrupt of the TCPWM counter initiated by the PWM signal on the TRAVEO™ T2G MCU, as the input port of Smart I/O, and confirm that the output of Smart I/O is reflected to user LED2.

View this README on GitHub.

Provide feedback on this code example.

Requirements

ModusToolbox™ v3.2 or later (tested with v3.2)
Board support package (BSP) minimum required version for:
- KIT_T2G_C-2D-6M_LITE: v1.0
Programming language: C
Associated parts: TRAVEO™ T2G family Cluster series

Supported toolchains (make variable 'TOOLCHAIN')

GNU Arm® Embedded Compiler v11.3.1 (GCC_ARM) – Default value of TOOLCHAIN
Arm® Compiler v6.22 (ARM)
IAR C/C++ Compiler v9.50.2 (IAR)

Supported kits (make variable 'TARGET')

TRAVEO™ T2G Cluster 6M Lite Kit (KIT_T2G_C-2D-6M_LITE) – Default value of TARGET

Hardware setup

This example uses the board's default configuration. See the kit user guide to ensure that the board is configured correctly.

Software setup

See the ModusToolbox™ tools package installation guide for information about installing and configuring the tools package.

Install a terminal emulator if you don't have one. Instructions in this document use Tera Term.

This example requires no additional software or tools.

Using the code example

Create the project

The ModusToolbox™ tools package provides the Project Creator as both a GUI tool and a command line tool.

Use Project Creator GUI

Open the Project Creator GUI tool.

There are several ways to do this, including launching it from the dashboard or from inside the Eclipse IDE. For more details, see the Project Creator user guide (locally available at {ModusToolbox™ install directory}/tools_{version}/project-creator/docs/project-creator.pdf).
On the Choose Board Support Package (BSP) page, select a kit supported by this code example. See Supported kits.

Note: To use this code example for a kit not listed here, you may need to update the source files. If the kit does not have the required resources, the application may not work.
On the Select Application page:

a. Select the Applications(s) Root Path and the Target IDE.

Note: Depending on how you open the Project Creator tool, these fields may be pre-selected for you.

b. Select this code example from the list by enabling its check box.

Note: You can narrow the list of displayed examples by typing in the filter box.

c. (Optional) Change the suggested New Application Name and New BSP Name.

d. Click Create to complete the application creation process.

Use Project Creator CLI

The 'project-creator-cli' tool can be used to create applications from a CLI terminal or from within batch files or shell scripts. This tool is available in the {ModusToolbox™ install directory}/tools_{version}/project-creator/ directory.

Use a CLI terminal to invoke the 'project-creator-cli' tool. On Windows, use the command-line 'modus-shell' program provided in the ModusToolbox™ installation instead of a standard Windows command-line application. This shell provides access to all ModusToolbox™ tools. You can access it by typing "modus-shell" in the search box in the Windows menu. In Linux and macOS, you can use any terminal application.

The following example clones the "mtb-example-ce240927-tcpwm-counter-smartio" application with the desired name "TcpwmCounterSmartio" configured for the KIT_T2G_C-2D-6M_LITE BSP into the specified working directory, C:/mtb_projects:

project-creator-cli --board-id KIT_T2G_C-2D-6M_LITE --app-id mtb-example-ce240927-tcpwm-counter-smartio --user-app-name TcpwmCounterSmartio --target-dir "C:/mtb_projects"

The 'project-creator-cli' tool has the following arguments:

Argument	Description	Required/optional
`--board-id`	Defined in the field of the BSP manifest	Required
`--app-id`	Defined in the field of the CE manifest	Required
`--target-dir`	Specify the directory in which the application is to be created if you prefer not to use the default current working directory	Optional
`--user-app-name`	Specify the name of the application if you prefer to have a name other than the example's default name	Optional

Note: The project-creator-cli tool uses the git clone and make getlibs commands to fetch the repository and import the required libraries. For details, see the "Project creator tools" section of the ModusToolbox™ tools package user guide (locally available at {ModusToolbox™ install directory}/docs_{version}/mtb_user_guide.pdf).

Open the project

After the project has been created, you can open it in your preferred development environment.

Eclipse IDE

If you opened the Project Creator tool from the included Eclipse IDE, the project will open in Eclipse automatically.

For more details, see the Eclipse IDE for ModusToolbox™ user guide (locally available at {ModusToolbox™ install directory}/docs_{version}/mt_ide_user_guide.pdf).

Visual Studio (VS) Code

Launch VS Code manually, and then open the generated {project-name}.code-workspace file located in the project directory.

For more details, see the Visual Studio Code for ModusToolbox™ user guide (locally available at {ModusToolbox™ install directory}/docs_{version}/mt_vscode_user_guide.pdf).

Keil µVision

Double-click the generated {project-name}.cprj file to launch the Keil µVision IDE.

For more details, see the Keil µVision for ModusToolbox™ user guide (locally available at {ModusToolbox™ install directory}/docs_{version}/mt_uvision_user_guide.pdf).

IAR Embedded Workbench

Open IAR Embedded Workbench manually, and create a new project. Then select the generated {project-name}.ipcf file located in the project directory.

For more details, see the IAR Embedded Workbench for ModusToolbox™ user guide (locally available at {ModusToolbox™ install directory}/docs_{version}/mt_iar_user_guide.pdf).

Command line

If you prefer to use the CLI, open the appropriate terminal, and navigate to the project directory. On Windows, use the command-line 'modus-shell' program; on Linux and macOS, you can use any terminal application. From there, you can run various make commands.

For more details, see the ModusToolbox™ tools package user guide (locally available at {ModusToolbox™ install directory}/docs_{version}/mtb_user_guide.pdf).

Operation

Connect the board to your PC using the provided USB cable through the KitProg3 USB connector.
Open a terminal program and select the KitProg3 COM port. Set the serial port parameters to 8N1 and 115200 baud.
Program the board using one of the following:
Using Eclipse IDE
1. Select the application project in the Project Explorer.
2. In the Quick Panel, scroll down, and click <Application Name> Program (KitProg3_MiniProg4).
In other IDEs

Follow the instructions in your preferred IDE.
Using CLI

From the terminal, execute the make program command to build and program the application using the default toolchain to the default target. The default toolchain is specified in the application's Makefile but you can override this value manually:
```
make program TOOLCHAIN=<toolchain>
```
Example:
```
make program TOOLCHAIN=GCC_ARM
```
After successful programming, observe that the user LED1 and LED2 blink alternately.

Debugging

You can debug the example to step through the code.

In Eclipse IDE

Use the <Application Name> Debug (KitProg3_MiniProg4) configuration in the Quick Panel. For details, see the "Program and debug" section in the Eclipse IDE for ModusToolbox™ user guide.

In other IDEs

Follow the instructions in your preferred IDE.

Design and implementation

This design consists of the TCPWM counter, PWM, and user LED resources. Configure the PWM work with 25 MHz and output the PWM wave to the start counter. The counter work with 200 kHz and 60000 period value. Enable the CC0 and CC0 compare function and enable the CC0 match interrupt. It will generate an interrupt to toggle the user LED1 when counter up to CC0 match value 50000. Configure the user LED1 pin as strong drive and output mode to indicate the counter CC0 match interrupt. Additionally, this design uses the Smart I/O resource to connect a signal of this user LED1 input pin to the Smart I/O output pin to toggle a user LED2, the connection is implemented using the LUTs of the Smart I/O resource.

Figure 1. Counter setting

Figure 2. PWM setting

Figure 3 shows the connection from I/O port of the signal of user LED1 to the Smart I/O output port. LUT [6] is used for this use case.

Figure 3. Smart I/O connection diagram

Resources and settings

Table 1. Application resources

Resource	Alias/object	Purpose
PWM (PDL)	TCPWM PWM	PWM output line signal to start counter
COUNTER (PDL)	TCPWM Counter	Counter work at 200 kHz clock frequency
GPIO (PDL)	CYBSP_USER_LED1	User LED1 to show the counter CC0 match interrupt
TCPWM counter value input pin	SMART_IO_INPUT_PIN	Change the input logic level
Smart I/O	smart_io	Implements TCPWM counter signal value connection logic
Digital output pin	SMART_IO_OUTPUT_PIN	Display output state using the user LED2

Figure 4. Enabling Smart I/O

Figure 5. Smart I/O routing configuration

Figure 6 shows LUT6 configuration settings.

Figure 6. LUT configuration

Figure 7 shows the peripheral clock configuration for Smart I/O resources.

Figure 7. Peripheral clock configuration for Smart I/O

Related resources

Resources	Links
Application notes	AN235305 – Getting started with TRAVEO™ T2G family MCUs in ModusToolbox™ AN220193 – GPIO usage setup in TRAVEO™ T2G family AN220224 – How to use Timer, Counter, and PWM (TCPWM) in TRAVEO™ T2G family AN220203 – Smart I/O usage setup in TRAVEO™ T2G family
Code examples	Using ModusToolbox™ on GitHub
Device documentation	TRAVEO™ T2G family MCUs datasheets TRAVEO™ T2G family MCUs architecture/registers reference manuals
Development kits	Select your kits from the Evaluation board finder.
Libraries on GitHub	mtb-pdl-cat1 – Peripheral Driver Library (PDL) 　 retarget-io – Utility library to retarget STDIO messages to a UART port
Tools	ModusToolbox™ – ModusToolbox™ software is a collection of easy-to-use libraries and tools enabling rapid development with Infineon MCUs for applications ranging from wireless and cloud-connected systems, edge AI/ML, embedded sense and control, to wired USB connectivity using PSOC™ Industrial/IoT MCUs, AIROC™ Wi-Fi and Bluetooth® connectivity devices, XMC™ Industrial MCUs, and EZ-USB™/EZ-PD™ wired connectivity controllers. ModusToolbox™ incorporates a comprehensive set of BSPs, HAL, libraries, configuration tools, and provides support for industry-standard IDEs to fast-track your embedded application development.

Other resources

Infineon provides a wealth of data at www.infineon.com to help you select the right device, and quickly and effectively integrate it into your design.

Document history

Document title: CE240776 – PDL: TCPWM counter using Smart I/O

Version	Description of change
1.0.0	New code example

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