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Well, im still a novice in the IOT world, i was tasked with constructing hardware that wld read nfc tags with a raspberry pi board and communicate with a desktop computer over serial port.

The problem, now is following the sample provided by Microsoft, i have connected the usb to ttl moudle, to the board(rx,tx pins gnd and power), then plugged in the usb to the pc
i go to the device manager on my pc and see a yellow triangle indicating an error

after writing a console communicate with the device... but it throws an exception with the message showing
port dosent exist

The app on the raspberry is HEADLESS, pls can anyone provide any help or useful links?

What I have tried:

basically googled alot, but nothing!!
Updated 1-Apr-17 4:46am

1 solution

i go to the device manager on my pc and see a yellow triangle indicating an error
Windows didn't recognize your USB to serial TTL converter: you have to install the proper device driver.

I would use the Ethernet (unless you have a Pi Zero) port for the purpose of PC<->Raspeberry communication.
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Jaytee116 3-Apr-17 3:12am    
Thanks, after much headache the problem was from the version of the driver i installed, i re-installed another version, and now it works!!
CPallini 3-Apr-17 3:19am    
You are welcome. Enjoy the PI.

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