45 lines
1.8 KiB
Markdown
45 lines
1.8 KiB
Markdown
# WebUSB
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[WebUSB](https://wicg.github.io/webusb/) is an emerging web standard that allows to access @boardname@ from web pages.
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It allows for a **one-click download** without installing any additional app or software! It also allows to receive data from the @boardname@.
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## Support
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* Chrome 79+ browser for Android, Chrome OS, Linux, macOS and Windows 10.
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* Microsoft Edge 79+ browser for Android, Chrome OS, Linux, macOS and Windows 10.
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## Prepare your @boardname@
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Make sure that your @boardname@ is running version **0249** or above of the firmware. Upgrading is as easy as dragging a file and it takes a few seconds to get it done.
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* [Check out the instructions to check and upgrade your @boardname@.](/device/usb/webusb/troubleshoot)
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## Pair your @boardname@
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Here are the steps on the supported browsers:
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* connect your @boardname@ to your computer with the microUSB cable
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* open a project
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* click the triple dot icon on the **Download** button and click **Pair device**
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* click on the **Pair device** button and select **Calliope mini** or **DAPLink CMSIS-DAP** from the list.
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If you don't see any devices in the list and @boardname@ has the right firmware (**0249** or above), you can create a [support ticket](https://support.microbit.org/support/tickets/new) to notify the Micro:bit Foundation of the problem. Skip the rest of these steps.
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## Unpair your @boardname@ #unpair
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You will need to unpair your device from the editor to disable WebUSB.
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* Click on the **lock** icon in the address bar
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* Uncheck each **Calliope mini** or **DAPLink CMSIS-DAP** device
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* Reload the page
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## One-click Download
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Once your @boardname@ is paired, MakeCode will use WebUSB to transfer the code without having to drag and drop. Happy coding!
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## Console output
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MakeCode will be able to "listen" to your @boardname@ and display the console output.
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