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The port should be able to open on both system in RS485 mode.
Actual Behavior
I am using the waveshare USB -> RS485 convertor (uses FTDI FT232RL) and on the Mac and in Nerves. On the Mac I am able to open the port but on Nerves I get {:error, :enotty}
Steps to Reproduce the Problem
serial_port="/dev/ttyUSB0"# "/dev/cu.usbserial-A10KV16U" on Mac{:ok,port}=Circuits.UART.start_link()Circuits.UART.open(port,serial_port,speed: 250_000,rs485_enabled: true,stop_bits: 2,parity: :none)
Additional Information
The USB adapter is detected on Nerves and loads sio driver
[ 9.259140] usb 1-1: New USB device found, idVendor=0403, idProduct=6001, bcdDevice= 6.00
[ 9.259167] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 9.259177] usb 1-1: Product: FT232R USB UART
[ 9.259185] usb 1-1: Manufacturer: FTDI
[ 9.259218] usb 1-1: SerialNumber: A10KV16U
[ 9.262701] ftdi_sio 1-1:1.0: FTDI USB Serial Device converter detected
[ 9.262940] usb 1-1: Detected FT232RL
[ 9.263907] usb 1-1: FTDI USB Serial Device converter now attached to ttyUSB0
Setup
Expected Behavior
The port should be able to open on both system in RS485 mode.
Actual Behavior
I am using the waveshare USB -> RS485 convertor (uses FTDI FT232RL) and on the Mac and in Nerves. On the Mac I am able to open the port but on Nerves I get
{:error, :enotty}Steps to Reproduce the Problem
Additional Information
The USB adapter is detected on Nerves and loads sio driver
The port can be opened with
rs485_enabled: false