README.md

# XMC7000 MCU: ADC using HAL

This code example demonstrates the use of the ADC HAL driver to perform voltage measurements. In this example, the driver is configured to sample the input voltage periodically and display the sampled voltage on the UART terminal. By default, the ADC is configured to use one channel in single-ended mode.

[View this README on GitHub.](https://github.com/Infineon/mtb-example-xmc7000-adc-basic)

[Provide feedback on this code example.](https://cypress.co1.qualtrics.com/jfe/form/SV_1NTns53sK2yiljn?Q_EED=eyJVbmlxdWUgRG9jIElkIjoiQ0UyMzU2NTAiLCJTcGVjIE51bWJlciI6IjAwMi0zNTY1MCIsIkRvYyBUaXRsZSI6IlhNQzcwMDAgTUNVOiBBREMgdXNpbmcgSEFMIiwicmlkIjoiY2N0YSIsIkRvYyB2ZXJzaW9uIjoiMi4wLjAiLCJEb2MgTGFuZ3VhZ2UiOiJFbmdsaXNoIiwiRG9jIERpdmlzaW9uIjoiTUNEIiwiRG9jIEJVIjoiSUNXIiwiRG9jIEZhbWlseSI6IlBTT0MifQ==)

## Requirements

- [ModusToolbox™](https://www.infineon.com/modustoolbox) v3.1 or later (tested with v3.1)
- Programming language: C
- Associated parts: [XMC7000 MCU](https://www.infineon.com/cms/en/product/microcontroller/32-bit-industrial-microcontroller-based-on-arm-cortex-m/)

## Supported toolchains (make variable 'TOOLCHAIN')

- GNU Arm® Embedded Compiler v11.3.1 (`GCC_ARM`) – Default value of `TOOLCHAIN`
- Arm® Compiler v6.16 (`ARM`)
- IAR C/C++ Compiler v9.30.1 (`IAR`)


## Supported kits (make variable 'TARGET')

- [XMC7200 Evaluation Kit](https://www.infineon.com/KIT_XMC72_EVK) (`KIT_XMC72_EVK`)
- [XMC7100 Evaluation Kit](https://www.infineon.com/KIT_XMC71_EVK_LITE_V1) (`KIT_XMC71_EVK_LITE_V1`)

## 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

Install a terminal emulator if you don't have one. Instructions in this document use [Tera Term](https://ttssh2.osdn.jp/index.html.en).

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.

<details><summary><b>Use Project Creator GUI</b></summary>

1. 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](https://www.infineon.com/ModusToolboxProjectCreator) (locally available at *{ModusToolbox&trade; install directory}/tools_{version}/project-creator/docs/project-creator.pdf*).

2. On the **Choose Board Support Package (BSP)** page, select a kit supported by this code example. See [Supported kits](#supported-kits-make-variable-target).

   > **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.

3. 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.

</details>

<details><summary><b>Use Project Creator CLI</b></summary>

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&trade; 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&trade; installation instead of a standard Windows command-line application. This shell provides access to all ModusToolbox&trade; 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 will clone the "[mtb-example-pdl-xmc7000-adc-basic](https://github.com/Infineon/mtb-example-pdl-xmc7000-adc-basic)" application with the desired name "ADC_basic" configured for the *KIT_XMC72_EVK* BSP into the specified working directory, *C:/mtb_projects*:

   ```
   project-creator-cli --board-id KIT_XMC72_EVK --app-id mtb-example-pdl-xmc7000-adc-basic --user-app-name ADC_basic --target-dir "C:/mtb_projects"
   ```
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

> **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&trade; tools package user guide](https://www.infineon.com/ModusToolboxUserGuide) (locally available at {ModusToolbox&trade; install directory}/docs_{version}/mtb_user_guide.pdf).

</details>



### Open the project

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


<details><summary><b>Eclipse IDE</b></summary>

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&trade; user guide](https://www.infineon.com/MTBEclipseIDEUserGuide) (locally available at *{ModusToolbox&trade; install directory}/docs_{version}/mt_ide_user_guide.pdf*).

</details>


<details><summary><b>Visual Studio (VS) Code</b></summary>

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&trade; user guide](https://www.infineon.com/MTBVSCodeUserGuide) (locally available at *{ModusToolbox&trade; install directory}/docs_{version}/mt_vscode_user_guide.pdf*).

</details>


<details><summary><b>Keil µVision</b></summary>

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

For more details, see the [Keil µVision for ModusToolbox&trade; user guide](https://www.infineon.com/MTBuVisionUserGuide) (locally available at *{ModusToolbox&trade; install directory}/docs_{version}/mt_uvision_user_guide.pdf*).

</details>


<details><summary><b>IAR Embedded Workbench</b></summary>

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&trade; user guide](https://www.infineon.com/MTBIARUserGuide) (locally available at *{ModusToolbox&trade; install directory}/docs_{version}/mt_iar_user_guide.pdf*).

</details>


<details><summary><b>Command line</b></summary>

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&trade; tools package user guide](https://www.infineon.com/ModusToolboxUserGuide) (locally available at *{ModusToolbox&trade; install directory}/docs_{version}/mtb_user_guide.pdf*).

</details>



## Operation

1. Connect the board to your PC using the provided USB cable through the KitProg3 USB connector.

2. Open a terminal program and select the KitProg3 COM port. Set the serial port parameters to 8N1 and 115200 baud.

3. Program the board using one of the following:

   <details><summary><b>Using Eclipse IDE</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>In other IDEs</b></summary>

   Follow the instructions in your preferred IDE.
   </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 is specified in the application's Makefile but you can override this value manually:
      ```
      make program TOOLCHAIN=<toolchain>
      ```

      Example:
      ```
      make program TOOLCHAIN=GCC_ARM
      ```
   </details>

4. After programming, the application starts automatically. Ensure that input voltages are provided at analog input pin P6_6. This pin is connected to the potentiometer.

5. Rotate the potentiometer to change the ADC input voltage.

6. Confirm that "XMC7000 MCU: ADC using HAL" and the input voltage are displayed on the UART terminal.

   **Figure 1. Terminal output with single-channel configuration**

   ![](images/single-channel-output.png)

## Debugging


You can debug the example to step through the code.


<details><summary><b>In Eclipse IDE</b></summary>

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&trade; user guide](https://www.infineon.com/MTBEclipseIDEUserGuide).


**Note:** **(Only while debugging)** On the debugging CPU, some code in `main()` may execute before the debugger halts at the beginning of `main()`. This means that some code executes twice – once before the debugger stops execution, and again after the debugger resets the program counter to the beginning of `main()`. See [KBA231071](https://community.infineon.com/docs/DOC-21143) to learn about this and for the workaround.

</details>


<details><summary><b>In other IDEs</b></summary>

Follow the instructions in your preferred IDE.
</details>



## Design and implementation

In this example, the ADC is configured with 12-bit resolution; by default, one channel with 0-VDDA range is configured using the HAL. The input voltage is sampled every 200 ms by calling `cyhal_adc_read_uv`; the measured input voltage is displayed on the UART terminal.

This code example uses a delay of 200 ms between reads for demonstration purpose to print the sampled results on the UART terminal. To achieve sampling at higher rates, remove the delay and use the  `cyhal_adc_set_sample_rate` function to configure the number of samples per second.

XMC7000 HAL currently restricts mapping of any GPIO pins as input to the ADC. Only pins that have direct connection to the ADC can be used as inputs to the ADC. On all supported boards, P6_x are the preferred GPIO pins as the input for the ADC because they directly connect to the ADC; therefore, the input pin P6_6 is used as the input channel.

### Resources and settings

**Table 1. Application resources**

| Resource  |  Alias/Object     |    Purpose     |
| :------- | :------------    | :------------ |
| ADC (HAL)    | adc_obj         | Analog-to-Digital converter driver |
| UART (HAL)|cy_retarget_io_uart_obj| UART HAL object used by Retarget-IO for Debug UART port  |

## Related resources

Resources  | Links
-----------|----------------------------------
Application notes | [AN234334](https://www.infineon.com/AN234334) – Getting started with XMC7000 MCU on ModusToolbox&trade; software <br /> [AN234282](https://www.infineon.com/AN234282) – Using a SAR ADC in XMC7000 Family
Code examples  | [Using ModusToolbox&trade; software](https://github.com/Infineon/Code-Examples-for-ModusToolbox-Software) on GitHub
Device documentation | [XMC7000 MCU datasheets](https://www.infineon.com/cms/en/product/microcontroller/32-bit-industrial-microcontroller-based-on-arm-cortex-m/) <br /> [XMC7000 technical reference manuals](https://www.infineon.com/cms/en/product/microcontroller/32-bit-industrial-microcontroller-based-on-arm-cortex-m/) 
Development kits | [XMC&trade; Eval boards](https://www.infineon.com/cms/en/product/microcontroller/32-bit-industrial-microcontroller-based-on-arm-cortex-m/#boards)
Libraries on GitHub | [mtb-pdl-cat1](https://github.com/Infineon/mtb-pdl-cat1) – Peripheral Driver Library (PDL) <br /> [mtb-hal-cat1](https://github.com/Infineon/mtb-hal-cat1) – Hardware Abstraction Layer (HAL) library
Middleware on GitHub  | [mcu-middleware](https://github.com/Infineon/modustoolbox-software) – Links to all MCU middleware
Tools  | [ModusToolbox&trade;](https://www.infineon.com/modustoolbox) – ModusToolbox&trade; 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&trade; Industrial/IoT MCUs, AIROC&trade; Wi-Fi and Bluetooth&reg; connectivity devices, XMC&trade; Industrial MCUs, and EZ-USB&trade;/EZ-PD&trade; wired connectivity controllers. ModusToolbox&trade; incorporates a comprehensive set of BSPs, HAL, libraries, configuration tools, and provides support for industry-standard IDEs to fast-track your embedded application development.

<br />

## Other resources

Infineon provides a wealth of data at [www.infineon.com](https://www.infineon.com) to help you select the right device, and quickly and effectively integrate it into your design.


## Document history

Document title: *CE235650* – *XMC7000 MCU: ADC using HAL*

| Version | Description of change |
| ------- | --------------------- |
| 1.0.0   | New code example. |
| 2.0.0   | Updated to support ModusToolbox&trade; v3.1 <br /> Added support for KIT_XMC71_EVK_LITE_V1 |

------

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