Issues with Macchina A0 OBD-II Development Module DEV-17493: Error opening serial port '/dev/ttyUSB0

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1

I just received the A0 the other day. To change some settings you are supposed to access the A0 through the serial port. I am unable to connect to the A0 through the serial port. I get the error message 'Error opening serial port ‘/dev/ttyUSB0’. I have no issues opening a serial connection with any of my other boards, its just this one thats giving me troubles. I can access the serial ports on arduino’s, Rpi pico’s, and esp32’s. I hope someone can help me access the A0’s serial port or let me know how I can exchange this A0 for a working one.

Thanks,

Bill

2

I’d guess the drivers need to be loaded; try https://www.silabs.com/developers/usb-t … =downloads and then proceed here https://docs.macchina.cc/a0-docs/a0-fir … ystem-menu

If it’s still giving issues, try resetting both and/or confirming admin privileges and selecting the correct port (that pops up @ plug-in)

3

I don’t think it’s a driver issue. I’m running kubuntu 22.04 currently and lsusb is showing the cp210x chip when plugged in. I could be wrong though. Should I try and install the Linux drivers for the cp210x chip?