picciux wrote: Try to post the output of
ls -l /dev/ttymount
Output
lrwxrwxrwx 1 root root 9 Sep 29 15:49 /dev/ttymount -> gpiochip3
On the RPi (currently) the only USB device plugged-in is the Future Technology Devices Serial adapter (though internally the ethernet seems connected via the USB hub). lsusb output
Bus 001 Device 004: ID 0403:6001 Future Technology Devices International, Ltd FT232 Serial (UART) IC
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Many thanks
Ian
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