Page Comparison

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• port As Integer: The port enumeration of the serial device:
  • Most standard serial devices (including the USB-serial port on the LS424) enumerate on port 0, though port 1 may be available on the GPIO connector on some models if enabled. See roControlPort.EnableAlternateFunction.
  • If more than one USB serial device is attached then the first one will be port 2, the second will be port 3, etc.
  • To communicate with the serial port of an OPS display (i.e. with the HO523), use port 1.
  • To communicate with a USB-serial device (such as a GPS receiver), use port 2.
• port As String: If multiple USB-serial devices are connected to the player, the device can be specified with a friendly name ("USB:<friendly_name>"). This value corresponds to the <fid> value returned by the roDeviceInfo.GetUSBTopology() method. The BrightSign shell usblist command can be used to discover friendly names. Note that RAW names are not guaranteed to stay the same between products or OS versions, so they are not recommended.
• baud_rate As Integer: The baud rate for serial communication. The serial port supports the following baud rates: 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400.

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