ttyCOM0 can not be recognized as serial-port in gadget

[smartdabao]

I found only ttyS0, ttyUSB0 can be recognized as serial-port in gadget snap. If I have a ttyGPS0 which used for GPS or ttyCOM0, they can not be recognized as serial-port. And other snaps can access these ports, without any access control.

Is it a bug or I made something wrong? Thank you.

[ogra]

well, what hardware is it you are talking about ? how do you normally enable the attched device, do you see an entry in /dev when it gets attached (vs booting without it attached) ?

the kernel might not use the same device names you are used to …

[smartdabao]

Sorry, let me clarify. ttyGPS or ttyCOM0 is symbolic link to ttyS*, there are so many ttyS* in /dev, so other developers can find the right serial-port throuth symbolic link.

[smartdabao]

I found the answers, thank you @ogra.

Snap interfaces serial-port error "serial-port path attribute must be a valid device node"

thanks for reply. the /dev/ttyGPS is specific to my iot device. In fact i want to use serial-port for virtual port, such as /dev/tttyCOM1(/dev/pts/0) [image] if add the seial-port path with “/dev/ttyCOM1” or “/dev/ptx/0” ,there are all error for “serial-port path attribute must be a valid device node” the seial-port path must be the format you mentioned？ whether the serial-port can support virtual port /dev/pts/x ?