Issue after flashing in DFU mode for Arduino Uno r3 about nintendo-switch-remote-control HOT 5 CLOSED

You said the board is recognized as a controller. Does that mean that the Switch shows it as a USB controller in the menu? You should see that and you can also try connecting it to the PC, when it has to appear as "HORIPAD S" or something like that.
If that is the case, it means you flashed the firmware correctly, so the issue is about communications. I didn't make any relevant change in respect of SwitchInputEmulator.
Does your FT232 adaptor has LEDs? In that case, you can check if the commands are being sent. You should see both RX and TX leds on, because the board responds with an ACK message after every corerctly received packet (or NACK).
If you use the Java program, the connection status is shown in the GUI. If the Arduino doesn't recognize packets correctly, you will see the message "Syncing..." very often, because the host will try to resync after some NACKs.
Finally, the error might be the baudrate. The baudrate is programmed in the firmware and my code has it set to 1Mbps. If you select a different baudrate in the Java program, it won't work.

Tell me if some of those things work!

from nintendo-switch-remote-control.

Thanks a lot for the feedback, that was a good place to start and appeared to in fact to be a part of the problem. I adjusted the baud rate to match on the serial/USB adapter and made sure the serial port initialization matched those values and did get it to recognize on a separate testing laptop.

I found that the order of connecting the USB Serial, Arduino and Switch was important. I had to disconnect all three parts, first plug in the Arduino USB to Switch, then plug in USB Serial adapter to PC and finally wire the adapter to the Arduino (TX->TX RX->RX GND->GND 5V->5V) led to consistent successful connectivity. After that I had to make sure the sync protocol ran (I used the one from SwitchInputEmulator which initialized at 19200 baud) and it worked as needed.

I hope this can maybe help anyone else struggling to connect and thanks for your help!

from nintendo-switch-remote-control.

Hi @SequentialBase9915, can you check if the order in this README works? It's:

1. Arduino to adapter (your last step).
2. Adapter to PC.
3. Arduino to Switch (your first step).

This is the order I have always used and don't recall getting errors. If you can test it, I would really appreciate it. That means the steps in that README are correct. Otherwise, I will test your method and update the README if it works for me too.

Thanks in advance!

from nintendo-switch-remote-control.

Apologies I hadn’t had the time to test but I tried the steps you mentioned and those worked fine as well, thank you.

from nintendo-switch-remote-control.

Ok, so I will leave the readme as it is now. Thanks!

from nintendo-switch-remote-control.