PDL: TCPWM QuadDec rotary mode

This code example demonstrates how to use an up/down rotary counter in a TCPWM quadrature decoder (QuadDec).

View this README on GitHub.

Provide feedback on this code example.

Requirements

ModusToolbox™ v3.4 or later (tested with v3.4)
Programming language: C
Associated parts: TRAVEO™ T2G MCU family Body 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 Body High Lite Kit (KIT_T2G-B-H_LITE) – Default value of TARGET
TRAVEO™ T2G Body Entry Lite Kit (KIT_T2G-B-E_LITE)

Hardware setup

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

The example does not require any additional hardware to run. To measure the current consumed by the MCU device, connect an ammeter and see the kit guide for instructions. Kit may require hardware modifications.

Software setup

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

Install a terminal emulator if you do not 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-ce241316-tcpwm-quaddec-rotary-mode" application with the desired name "Rotary" configured for the KIT_T2G-B-H_LITE BSP into the specified working directory, C:/mtb_projects:

project-creator-cli --board-id KIT_T2G-B-H_LITE --app-id mtb-example-ce241316-tcpwm-quaddec-rotary-mode -alarm --user-app-name Rotary --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).

Arm® Keil® µVision®

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

For more details, see the Arm® 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

TCPWM quadrature decoder is connected to GPIO with jumpers. Connect P2[1] to P14[3] and P2[0] to P0[3]

Figure 1. Pin connection on KIT_T2G-B-H_LITE kit

Lite Kit	GPIO 1	QuadDec 1	QuadDec 2	GPIO 2
KIT_T2G-B-H_LITE	P14[3] (J14.7)	P2[1] (J14.6)	P2[0] (J14.5)	P0[3] (J14.4)
KIT_T2G-B-E_LITE	P14[3] (J14.7)	P2[1] (J14.6)	P2[0] (J14.5)	P0[3] (J14.4)

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 programming, the application starts automatically. Press D key to decrease the rotary counter. Press I key to increase the rotary counter. Observe the results in the terminal window

Figure 2. Low power wakeup sample output

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 code example shows how to use an up/down rotary counter in a TCPWM quadrature decoder. The waveforms for the quadrature decoder is generated by GPIO. They are connected to the quadrature decoder inputs with jumpers. The initial value for the up/down rotary counter is 0x8000 and the initial counter is increment. After the quadrature decoder is started, when the D key is pressed, the counter is decrement. Also, when the I key is pressed, the counter is increment. And when the counter reaches 0xa000, an interrupt occurs and it is changed from increment to decrement automatically. Also, when the counter reaches 0x6000, an interrupt occurs and it is changed from decrement to increment automatically.

Resources and settings

Table 1. Application resources

Resource	Alias/object	Purpose
TCPWM quadrature decoder	QuadDec	TCPWM quadrature decoder object
UART	UART	UART object used by Retarget-IO for the Debug UART port

Related resources

Resources	Links
Application notes	AN235305 – Getting started with TRAVEO™ T2G family MCUs in ModusToolbox™ AN220224 – How to use Timer, Counter, and PWM (TCPWM) in TRAVEO™ T2G family AN225401 – How to use serial communication block (SCB) in TRAVEO™ T2G family
Code examples	Using ModusToolbox™ on GitHub
Device documentation	TRAVEO™ T2G CYT4BF series datasheet TRAVEO™ T2G CYT2BL series datasheet TRAVEO™ T2G MCU family architecture and 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
Middleware on GitHub	mcu-middleware – Links to all MCU middleware
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: CE241316 – PDL: TCPWM QuadDec rotary mode

Version	Description of change
1.0.0	New code example

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Infineon/mtb-example-ce241316-tcpwm-quaddec-rotary-mode

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