Jan 11 16:40:20 X1-6th kernel: usbserial: USB Serial support registered for Keyspan 1 port adapter Jan 11 16:40:20 X1-6th kernel: usbserial: USB Serial support registered for Keyspan - (without firmware) Here's what I see in the console log after doing a dmesg -n 8 and plugging in the Keyspan converter: Jan 11 16:40:20 X1-6th kernel: usbcore: registered new interface driver keyspan Somewhat suspiciously, in my console log, it looks like the keyspan driver isn't loading any firmware. I'm trying to read data from a serial source that uses even parity and 1 stop bit. It's as if the driver is ignoring the parity/stop-bit parameters. However, no combination of either flags in pyserial when reading the serial port via python, or parenb or cstopb arguments to stty when reading the port via hd seem to change the data I can read from the serial port. Plugging either in to my Ubuntu 20.10 Lenovo X1 laptop results in a /dev/ttyUSB0 being created that I can open and read from. I have two different usb-to-serial adapters, a Keyspan USA-19HS and a Plugable usb serial converter.
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