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Document special upload procedure in UNO R4 WiFi HID tutorial #1246

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Aug 4, 2023
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Document special upload procedure in UNO R4 WiFi HID tutorial #1246

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Remove superfluous anticipatory sentence re: UNO R4 WiFi HID examples
per1234 Aug 4, 2023
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Document special upload procedure in UNO R4 WiFi HID tutorial
per1234 Aug 4, 2023
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12 changes: 11 additions & 1 deletion content/hardware/02.hero/boards/uno-r4-wifi/tutorials/usb-hid/usb-hid.md
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Expand Up @@ -36,7 +36,17 @@ To turn your board into an HID, you can use the **keyboard/mouse** API that is b
- [Keyboard](https://www.arduino.cc/reference/en/language/functions/usb/keyboard/)
- [Mouse](https://www.arduino.cc/reference/en/language/functions/usb/mouse/)

In the section below, you will a couple of useful examples to get you started!
## Sketch Upload Interference

As a consequence of the multi-processor design of the UNO R4 WiFi board, uploads may fail with a "`No device found on ...`" error when the board is running a sketch that uses the HID capabilities.

For this reason, you should use the following procedure to upload under these conditions:

**1.** Press and release the button marked "**RESET**" on the board quickly twice. The LED marked "**L**" on the board should now be pulsing.

**2.** Select the port of the board from the menu in Arduino IDE. The port might have changed after the previous step, so make sure to verify that it is selected.

**3.** Upload your sketch as usual.

## Keyboard

Expand Down