# Configuration List for BeagleBone Black

The list contains configuration and their respective variables that can be used with balena devices. Some of which will automatically appear for devices with supervisor v7.0.0 and greater. While they may not automatically populate in the Configuration dashboard, most of these variables can still be used with older supervisor versions, so be sure to check the *Supported by* context for each configuration.

In addition to these values, there may be device-type specific configuration variables that can be set. For example, these are a few of the values that apply to Raspberry Pi devices, corresponding to the contents of the [Raspberry Pi config.txt file](https://www.raspberrypi.com/documentation/computers/config_txt.html).

{% hint style="danger" %}
Warning: Wrong configuration may potentially leave a device inaccessible. Be sure to try your changes in a controlled environment before applying them to production devices.
{% endhint %}

| Variable Name                             | Description                                                                                                                               | Will reboot | Type        | Default |
| ----------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------- | ----------- | ----------- | ------- |
| `RESIN_SUPERVISOR_CONNECTIVITY_CHECK`     | Enable / Disable Cloudlink connectivity check                                                                                             | No          | false, true | true    |
| `RESIN_SUPERVISOR_LOG_CONTROL`            | Enable / Disable logs from being sent to balena API                                                                                       | No          | false, true | true    |
| `RESIN_SUPERVISOR_POLL_INTERVAL`          | Define the balena API poll interval in milliseconds                                                                                       | No          | integer     | 900000  |
| `RESIN_SUPERVISOR_VPN_CONTROL`            | Enable / Disable Cloudlink service on device                                                                                              | No          | false, true | true    |
| `RESIN_SUPERVISOR_PERSISTENT_LOGGING`     | Enable persistent logging. Only supported by supervisor versions >= v7.15.0.                                                              | Yes         | false, true | false   |
| `RESIN_SUPERVISOR_INSTANT_UPDATE_TRIGGER` | Enable / Disable triggering updates instantly on startup or after pushing a release. Only supported by supervisor versions >= v9.13.0.    | No          | false, true | true    |
| `RESIN_OVERRIDE_LOCK`                     | Override existing update lock(s) if your app is stuck in an invalid state under an update lock                                            | No          | 0, 1        | 0       |
| `BALENA_HOST_SPLASH_IMAGE`                | Define the PNG image to be used for the boot splash screen. Only supported by supervisor versions >= v12.3.0.                             | Yes         | string      |         |
| `BALENA_SUPERVISOR_HARDWARE_METRICS`      | Enable / Disable reporting device metrics such as CPU usage for bandwidth conservation. Only supported by supervisor versions >= v12.8.0. | No          | false, true | true    |

You can find more information on updating config.txt through configuration variables in our [Advanced Boot Configuration Guide](https://docs.balena.io/os/advanced#modifying-configtxt-using-configuration-variables). In addition to the dashboard, this configuration can be also be set using the API or any of its clients, including the [SDK](https://docs.balena.io/reference/sdk/node-sdk/latest) and [CLI](https://docs.balena.io/balena-cli/latest#env-list). If you are using configuration to specify i2c or other interfaces, then check out the docs on how to go about [interacting with hardware](https://docs.balena.io/learn/develop/hardware/i2c-and-spi).


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.balena.io/reference/supervisor/configuration-list/beaglebone-black.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.