Arduino Giga USB-c for serial communication + External power supply

Projects General Guidance
1

Hello i cannot get this to work.

I am currently powering my arduino Giga with an external 12V power supply on VIn. I connect the USB-c to a external serial device so i can write commandos to it and read the measurements.

If i write the commandos to the external device with PuTTY it al goes how it should.

All i need to do is write a capital S to the device and i recieve 16 bits of data back.

Does anyone have tips on how to approach this? / What is not working

2

Have a look at serial basics and some of the examples in the IDE on serial communications .

Also having an ASCII table on hand might be useful .

Also worth posting up your code , details of what you send at the settings from putty or serial monitor

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