New to arduino, how can i send arduino code without com port

hi everyone, im new to arduino so dont flame me.

im using a custom firmware that hides the com port, but still listens on it

im wondering how can i send arduino code to my arduino without the use of a com port, im using arduino leonardo atmega32u4

thanks :slight_smile:

just to note when i reset it, it shows the hidden com port for around 5 seconds then goes again

If you press the reset switch twice does it stay in bootloader mode?

how can i check if it does that? its a rip off mini doesnt have a reset switch just headers

You can probably program it using the ICSP interface but you will need an external programmer

I moved your topic to an appropriate forum category @adamabd12 .

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Thanks in advance for your cooperation.

A firmware cannot hide a Com port. But the 32u4 has a native USB, so it can use another USB channel to communicate to the PC ( no USB serial Com port ). If you don't see a Com port in device manager, there is no serial communication.

That's not a 'hidden' comport - its the Com port to download a sketch to the 32u4. This port is always different to the Com port when communicating via Serial. This bootloader port is only open as long as the bootloader is running ( after reset ) and is used to upload firmware.

If there is no serial communication when the sketch is running, the IDE cannot reset the Arduino automatically for uploading. So you must do that manually when the IDE starts uploading the sketch.

One of the pins is the reset pin. You can connect that pin to Gnd via a button to get your reset-button.
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