# Device Configuration Tool

**Device Configuration** tool allows you to configure the initialization of memory interfaces of your hardware. Use the **Device Configuration Data \(DCD\)** view to create different types of commands and specify their sequence, define their address, values, sizes, and polls.

```{eval-rst}
.. figure:: _images/mcux7dcd.png
   :scale: 30%
   :align: center
   
   **Device Configuration tool**

```

## Device Configuration Data \(DCD\) view

The **Device Configuration Data \(DCD\)** view displays memory initialization commands of your currently active configuration. Here, you can create command groups and commands and specify their parameters.

### Device Configuration Data \(DCD\) view actions

The following is a list of command and command group-relevant actions that you can perform in the **Device Configuration Data \(DCD\)** view:

- **Create a new command group** - Right-click the table and choose **Add Group** from the context menu.
- **Re/Name a command group** - Left-click the command group cell and enter the required name.
- **Disable a command group** - Right-click the command group row and choose **Disable Group** from the context menu.
- **Remove a command group** - Right-click the command group row and choose **Remove Group** from the context menu.
- **Collapse all command groups** - Right-click the the table and choose **Collapse All Groups** from the context menu.
- **Expand all command groups** - Right-click the table and choose **Expand All Groups** from the context menu.
- **Add a command to a group** - Right-click the table and choose **Add Command** from the context menu. Alternatively, click the **Add Command** button in the tool's toolbar.
- **Specify command type** - Left-click the row's **Command** cell and choose from the dropdown menu.
- **Specify register address for a command** - Left-click the row's **Address** cell and choose from the dropdown menu.
- **Specify a value or a mask for a command** - Left-click the row's **Value\(s\) / Mask\(s\)** cell to open the mask window. Enter the value into the field and select **OK**. Alternatively, select **Cancel** to cancel the operation, or **Reset** to reset the value.

```{eval-rst}
.. figure:: _images/bitsdialog.png
   :scale: 60%
   :align: center
   
   **Mask**

```

- **Specify the size of write/read data for a command** - Left-click the row's **Size** cell and choose from the dropdown menu.
- **Specify the number of polls of a command** - Left-click the row's **Poll** cell and enter the required value.
- **Add a comment to a command** - Left-click the row's **Comment** cell.
- **Remove a command** - Right-click the command row and choose **Remove Command** from the context menu. Alternatively, click the **Remove Command** button in the tool's toolbar.
- **Cut a command** - Right-click the command row and choose **Cut** from the context menu.
- **Copy a command** - Right-click the command row and choose **Copy** from the context menu.
- **Paste a command** - Right-click the command row and choose **Paste** from the context menu.

**Note:** You can remove all commands by clicking **Device Configuration** in the **Menu bar** and choosing **Clear All Commands** from the dropdown menu.

Basic cell selection shortcuts are applicable.

- **Select additional commands** - Ctrl+Left-click the command row.

## Code generation

If the settings are correct and no error is reported, the code generation engine instantly regenerates the source code. You can view the resulting code the **Code Preview** view of the **Device Configuration** tool.

**Code Preview** automatically highlights differences between the current and immediately preceding iteration of the code. You can choose between two modes of highlighting by clicking the **Set viewing style for source differences**. You can also disable highlighting altogether from the same dropdown menu. Such features as Copy, Search, Zoom-in, Zoom-out, and Export source are available in the **Code Preview** view. The search can also be invoked by CTRL+F or from the context menu.

**Device Configuration** source code can be generated in a C array \(default\) or binary format.

The code in a C array format is generated in two files:

- dcd.c
- dcd.h

The code in a binary format is generated in a single file:

- dcd.bin

To change the code format, choose the required option from the dropdown menu in the **Device Configuration Data \(DCD\)** view.

```{eval-rst}
.. figure:: _images/mcux7dcdcode.png
   :scale: 60%
   :align: center
   
   **Code Preview**

```