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| # EZ-PD™ PMG1 MCU: Counter LED | |
| This code example demonstrates the configuration of TCPWM block in EZ-PD™ PMG1 MCU devices as a counter or timer to generate periodic interrupts which is used to toggle an LED every 0.5 second. | |
| [View this README on GitHub.](https://github.com/Infineon/mtb-example-pmg1-counter-led) | |
| [Provide feedback on this code example.](https://cypress.co1.qualtrics.com/jfe/form/SV_1NTns53sK2yiljn?Q_EED=eyJVbmlxdWUgRG9jIElkIjoiQ0UyMzM2NjYiLCJTcGVjIE51bWJlciI6IjAwMi0zMzY2NiIsIkRvYyBUaXRsZSI6IkVaLVBEJnRyYWRlOyBQTUcxIE1DVTogQ291bnRlciBMRUQiLCJyaWQiOiJhYmhwIiwiRG9jIHZlcnNpb24iOiIyLjAuMCIsIkRvYyBMYW5ndWFnZSI6IkVuZ2xpc2giLCJEb2MgRGl2aXNpb24iOiJNQ0QiLCJEb2MgQlUiOiJXSVJFRCIsIkRvYyBGYW1pbHkiOiJUWVBFLUMifQ==) | |
| ## Requirements | |
| - [ModusToolbox™ software](https://www.infineon.com/modustoolbox) v3.0 or later (tested with v3.0) | |
| - Set the `CY_SUPPORTED_KITS` environment variable with the value of "PMG1" to enable support for the PMG1 parts and BSPs under ModusToolbox™ software | |
| - Board support package (BSP) minimum required version: 3.0.0 | |
| - Programming language: C | |
| - Associated parts: All [EZ-PD™ PMG1 MCU](https://www.infineon.com/PMG1) parts | |
| ## Supported toolchains (make variable 'TOOLCHAIN') | |
| - GNU Arm® embedded compiler v10.3.1 (`GCC_ARM`) - Default value of `TOOLCHAIN` | |
| - Arm® compiler v6.13 (`ARM`) | |
| - IAR C/C++ compiler v8.42.2 (`IAR`) | |
| ## Supported kits (make variable 'TARGET') | |
| - [EZ-PD™ PMG1-S0 MCU prototyping kit](https://www.infineon.com/CY7110) (`PMG1-CY7110`) - Default value of `TARGET` | |
| - [EZ-PD™ PMG1-S1 MCU prototyping kit](https://www.infineon.com/CY7111) (`PMG1-CY7111`) | |
| - [EZ-PD™ PMG1-S2 MCU prototyping kit](https://www.infineon.com/CY7112) (`PMG1-CY7112`) | |
| - [EZ-PD™ PMG1-S3 MCU prototyping kit](https://www.infineon.com/CY7113) (`PMG1-CY7113`) | |
| ## Hardware setup | |
| If UART DEBUG PRINT messages are enabled, UART connection are needed. Pin connections for UART is as shown in the following table. For the following revisions of the EZ-PD™ PMG1 prototyping kits, connect the UART Tx and UART Rx lines from the EZ-PD™ PMG1 kit to J3.8 and J3.10 on KitProg3 respectively to establish a UART connection between KitProg3 and the EZ-PD™ PMG1 device. | |
| For more information on UART DEBUG PRINT please refer compile-time confiuration. | |
| **Table 1. Pin connections for UART** | |
| | PMG1 kit | UART Tx | UART Rx | | |
| | :------- | :------------ | :---------- | | |
| | PMG1-CY7110 | J6.10 to J3.8 | J6.9 to J3.10 | | |
| | PMG1-CY7111 (revision 2 or lower) | J6.10 to J3.8 | J6.9 to J3.10 | | |
| | PMG1-CY7112 (revision 2 or lower) | J6.10 to J3.8 | J6.9 to J3.10 | | |
| | PMG1-CY7113 (revision 3 or lower) | J6.10 to J3.8 | J6.9 to J3.10 | | |
| **Note:** All prototyping kits with a higher revision have UART lines internally connected. Therefore, external wiring is not required. | |
| See the [EZ-PD™ PMG1 MCU prototyping kits guide](https://www.infineon.com/dgdl/Infineon-CY7110_CY7111_CY7112_EZ-PD_PMG1_Prototyping_Kit_Guide-UserManual-v01_03-EN.pdf?fileId=8ac78c8c7d0d8da4017d0fb2ee922768) for more details on configuring the board. | |
| ## Software setup | |
| This example requires no additional software or tools. | |
| ## Using the code example | |
| Create the project and open it using one of the following: | |
| <details><summary><b>In Eclipse IDE for ModusToolbox™ software</b></summary> | |
| 1. Click the **New Application** link in the **Quick Panel** (or, use **File** > **New** > **ModusToolbox™ Application**). This launches the [Project Creator](https://www.infineon.com/ModusToolboxProjectCreator) tool. | |
| 2. Pick a kit supported by the code example from the list shown in the **Project Creator - Choose Board Support Package (BSP)** dialog. | |
| When you select a supported kit, the example is reconfigured automatically to work with the kit. To work with a different supported kit later, use the [Library Manager](https://www.infineon.com/ModusToolboxLibraryManager) to choose the BSP for the supported kit. You can use the Library Manager to select or update the BSP and firmware libraries used in this application. To access the Library Manager, click the link from the **Quick Panel**. | |
| You can also just start the application creation process again and select a different kit. | |
| If you want to use the application 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. | |
| 3. In the **Project Creator - Select Application** dialog, choose the example by enabling the checkbox. | |
| 4. (Optional) Change the suggested **New Application Name**. | |
| 5. The **Application(s) Root Path** defaults to the Eclipse workspace which is usually the desired location for the application. If you want to store the application in a different location, you can change the *Application(s) Root Path* value. Applications that share libraries should be in the same root path. | |
| 6. Click **Create** to complete the application creation process. | |
| For more details, see the [Eclipse IDE for ModusToolbox™ software user guide](https://www.infineon.com/MTBEclipseIDEUserGuide) (locally available at *{ModusToolbox™ software install directory}/docs_{version}/mt_ide_user_guide.pdf*). | |
| </details> | |
| <details><summary><b>In command-line interface (CLI)</b></summary> | |
| ModusToolbox™ software provides the Project Creator as both a GUI tool and the command line tool, "project-creator-cli". The 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™ software 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™ software installation instead of a standard Windows command-line application. This shell provides access to all ModusToolbox™ software 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 "project-creator-cli" tool has the following arguments: | |
| Argument | Description | Required/optional | |
| ---------|-------------|----------- | |
| `--board-id` | Defined in the `<id>` field of the [BSP](https://github.com/Infineon?q=bsp-manifest&type=&language=&sort=) manifest | Required | |
| `--app-id` | Defined in the `<id>` field of the [CE](https://github.com/Infineon?q=ce-manifest&type=&language=&sort=) 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 | |
| <br> | |
| The following example clones the "[Counter LED](https://github.com/Infineon/mtb-example-pmg1-counter-led)" application with the desired name "MyCounterled" configured for the *PMG1-CY7110* BSP into the specified working directory, *C:/mtb_projects*: | |
| ``` | |
| project-creator-cli --board-id PMG1-CY7110 --app-id mtb-example-pmg1-counter-led --user-app-name MyCounterLED --target-dir "C:/mtb_projects" | |
| ``` | |
| **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™ software user guide](https://www.infineon.com/ModusToolboxUserGuide) (locally available at *{ModusToolbox™ software install directory}/docs_{version}/mtb_user_guide.pdf*). | |
| To work with a different supported kit later, use the [Library Manager](https://www.infineon.com/ModusToolboxLibraryManager) to choose the BSP for the supported kit. You can invoke the Library Manager GUI tool from the terminal using the `make library-manager` command or use the Library Manager CLI tool "library-manager-cli" to change the BSP. | |
| The "library-manager-cli" tool has the following arguments: | |
| Argument | Description | Required/optional | |
| ---------|-------------|----------- | |
| `--add-bsp-name` | Name of the BSP that should be added to the application | Required | |
| `--set-active-bsp` | Name of the BSP that should be as active BSP for the application | Required | |
| `--add-bsp-version`| Specify the version of the BSP that should be added to the application if you do not wish to use the latest from manifest | Optional | |
| `--add-bsp-location`| Specify the location of the BSP (local/shared) if you prefer to add the BSP in a shared path | Optional | |
| <br> | |
| The following example adds the PMG1-CY7110 BSP to the already created application and makes it the active BSP for the app: | |
| ``` | |
| ~/ModusToolbox™/tools_3.0/library-manager/library-manager-cli --project "C:/mtb_projects/MyCounterLED" --add-bsp-name PMG1-CY7110--add-bsp-version "latest-v3.X" --add-bsp-location "local" | |
| ~/ModusToolbox™/tools_3.0/library-manager/library-manager-cli --project "C:/mtb_projects/MyCounterLED" --set-active-bsp APP_PMG1-CY7110 | |
| ``` | |
| </details> | |
| <details><summary><b>In third-party IDEs</b></summary> | |
| Use one of the following options: | |
| - **Use the standalone [Project Creator](https://www.infineon.com/ModusToolboxProjectCreator) tool:** | |
| 1. Launch Project Creator from the Windows Start menu or from *{ModusToolbox™ software install directory}/tools_{version}/project-creator/project-creator.exe*. | |
| 2. In the initial **Choose Board Support Package** screen, select the BSP, and click **Next**. | |
| 3. In the **Select Application** screen, select the appropriate IDE from the **Target IDE** drop-down menu. | |
| 4. Click **Create** and follow the instructions printed in the bottom pane to import or open the exported project in the respective IDE. | |
| <br> | |
| - **Use command-line interface (CLI):** | |
| 1. Follow the instructions from the **In command-line interface (CLI)** section to create the application, and import the libraries using the `make getlibs` command. | |
| 2. Export the application to a supported IDE using the `make <ide>` command. | |
| 3. Follow the instructions displayed in the terminal to create or import the application as an IDE project. | |
| For a list of supported IDEs and more details, see the "Exporting to IDEs" section of the [ModusToolbox™ software user guide](https://www.infineon.com/ModusToolboxUserGuide) (locally available at *{ModusToolbox™ software install directory}/docs_{version}/mtb_user_guide.pdf*). | |
| </details> | |
| ## Operation | |
| 1. Ensure the steps listed in the [Hardware setup](#hardware-setup) section are completed. | |
| 2. Ensure the jumper shunt on the power selection jumper (J5) is placed at positions 2-3 to enable programming. | |
| 3. Connect the EZ-PD™ PMG1 MCU prototyping kit to your PC using a USB Type-C cable through the KitProg3 USB Type-C port (J1). This cable is used for programming and debugging the EZ-PD™ PMG1 MCU device. | |
| 4. Program the board using one of the following: | |
| <details><summary><b>Using Eclipse IDE for ModusToolbox™ software</b></summary> | |
| 1. Select the application project in the Project Explorer. | |
| 2. In the **Quick Panel**, scroll down, and click **\<Application Name> Program (KitProg3_MiniProg4)**. | |
| </details> | |
| <details><summary><b>Using CLI</b></summary> | |
| 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 and target are specified in the application's Makefile but you can override those values manually: | |
| ``` | |
| make program TOOLCHAIN=<toolchain> | |
| ``` | |
| Example: | |
| ``` | |
| make program TOOLCHAIN=GCC_ARM | |
| ``` | |
| </details> | |
| 5. After programming the kit, disconnect the USB cable and change the position of the power selection jumper (J5) to 1-2 to power the kit in operational mode. Do not change the position of the jumper (J5) while the cables are connected to the power source. | |
| 6. Connect the EZ-PD™ PMG1 USB-PD sink port (J10) to the PC or a power adapter using a USB Type-C cable. | |
| 7. The application starts automatically. Confirm that the onboard user LED (LED3) toggles every 0.5 second. | |
| ## Debugging | |
| You can debug the example to step through the code. In the IDE, use the **\<Application name> Debug (KitProg3_MiniProg4)** configuration in the **Quick Panel**. | |
| Ensure that the board is connected to your PC using the USB cables through the KitProg3 USB Type-C port and the EZ-PD™ PMG1 USB-PD sink port, with the jumper shunt on power selection jumper (J5) placed at position 1-2. | |
| See the "Debug mode" section in the kit user guide for debugging the application on the CY7110 prototyping kit. For details, see the "Program and debug" section in the [Eclipse IDE for ModusToolbox™ software user guide](https://www.infineon.com/dgdl/Infineon-Eclipse_IDE_for_ModusToolbox_User_Guide_1-UserManual-v01_00-EN.pdf?fileId=8ac78c8c7d718a49017d99bcb86331e8). | |
| ## Design and implementation | |
| The TCPWM block runs a 16-bit counter that can be configured as timer, counter, PWM, or quadrature decoder. In this example, the TCPWM block is configured in continuous up-counter mode and is used to generate a periodic interrupt upon counter overflow event. The TCPWM peripheral is assigned a clock signal of frequency 1 kHz. | |
| To generate a counter overflow interrupt every 0.5 second, the required TCPWM period count value can be calculated as follows: | |
| TCPWM period count value = interrupt period * TCPWM clock frequency | |
| = 0.5 * 1000 | |
| = 500 counts | |
| The TCPWM counter period can be changed as follows: | |
| 1. Select the application project in the Project Explorer. | |
| 2. In the **Quick Panel**, scroll down to the **Tools** section, and click **Device Configurator 3.10**. | |
| 3. On Device Configurator, select the enabled **TCPWM 16-bit Counter** under the **Digital** section in the **Peripherals** tab. This opens the TCPWM configuration fields. | |
| 4. Assign the required counter period in terms of count value and also change any other parameters mentioned as follows: | |
| **TCPWM block settings** | |
| Clock prescaler: 1 | |
| Run mode: Continuous | |
| Count direction: Up | |
| Period: 500 | |
| Compare or Capture: Capture | |
| Interrupt source: Overflow and Underflow | |
| Clock frequency: 1 kHz | |
| **Figure 1. TCPWM configuration** | |
| <img src = "images/tcpwm-configuration.png" width = "1000"/> | |
| ### Compile-time configurations | |
| The EZ-PD™ PMG1 MCU Counter LED application functionality can be customized through the compile-time parameters that can be turned ON/OFF through the *main.c* header file. | |
| Macro name | Description | Allowed values | |
| :------------------ | :------------------------------------ | :------------- | |
| `DEBUG_PRINT` | Debug print macro to enable UART print | 1u to enable <br> 0u to disable | | |
| ### Resources and settings | |
| **Table 1. Application resources** | |
| Resource | Alias/object | Purpose | |
| :-------- | :------------- | :----------------------------------- | |
| LED (BSP) | CYBSP_USER_LED | User LED to show the output | |
| TCPWM | CYBSP_COUNTER | Generates periodic interrupt | |
| ## Related resources | |
| Resources | Links | |
| -----------|------------------ | |
| Application notes |[AN232553](https://www.infineon.com/AN232553) – Getting started with EZ-PD™ PMG1 MCU on ModusToolbox™ software <br> [AN232565](https://www.infineon.com/an232565) – EZ-PD™ PMG1 hardware design guidelines and checklist | |
| Code examples | [Using ModusToolbox™ software](https://github.com/Infineon/Code-Examples-for-ModusToolbox-Software) on GitHub | |
| Device documentation | [EZ-PD™ PMG1 MCU datasheets](https://www.infineon.com/PMG1DS) | |
| Development kits | Select your kits from the [Evaluation Board Finder](https://www.infineon.com/cms/en/design-support/finder-selection-tools/product-finder/evaluation-board) page. | |
| Libraries on GitHub | [mtb-pdl-cat2](https://github.com/Infineon/mtb-pdl-cat2) – Peripheral driver library (PDL) and docs | |
| Tools | [Eclipse IDE for ModusToolbox™ software](https://www.infineon.com/modustoolbox) <br> ModusToolbox™ software is a collection of easy-to-use software and tools enabling rapid development with Infineon MCUs, covering applications from embedded sense and control to wireless and cloud-connected systems using AIROC™ Wi-Fi & Bluetooth® combo devices. | |
| <br /> | |
| ## 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: *CE233666* – *EZ-PD™ PMG1 MCU: Counter LED* | |
| Version | Description of change | |
| ------- | --------------------- | |
| 1.0.0 | New code example | |
| 2.0.0 | Major update to support ModusToolbox™ v3.0. This version is not backward compatible with previous versions of ModusToolbox™ | |
| <br> | |
| ------------------------------------------------------------------------------- | |
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