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elixir-circuits / circuits_uart

Discover and use UARTs and serial ports in Elixir
Apache License 2.0
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Circuits.UART.enumerate no work on Ubuntu 20.04 #114

Open braulio opened 3 years ago

braulio commented 3 years ago

Hello.

Hello I created a small application to test Circuits.UART. But I cannot enumerate the ports. I use iex -S mix and Circuits.UART.enumerate.

The result is always %{}

Need help.

Thanks.

fhunleth commented 3 years ago

Could you check that it's possible to use the ports outside of Elixir? Are you a member of the dialout group?

braulio commented 3 years ago

Hello Frank.

I managed to send a test message from /dev/pts/2 to /dev/pts/3 after setting permissions with chmod a+rw /dev/pts/2. But Circuits.UART.enumerate still doesn't work. Interactive Elixir (1.12.2) - press Ctrl+C to exit (type h() ENTER for help) iex(1)> Circuits.UART.enumerate %{}

I still don't know what's going on.

Thank you!

Em seg., 8 de nov. de 2021 às 10:56, Frank Hunleth @.***> escreveu:

Could you check that it's possible to use the ports outside of Elixir? Are you a member of the dialout group?

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fhunleth commented 3 years ago

/dev/pts/2 and /dev/pts/3 are not UARTs, so it's expected that Circuits.UART.enumerate won't return them.