Sharing discovery/solution Serial Port Communication on macOs

Jan M's icon

Today I was having trouble to send data to an external serial device on macOS Ventura (13.5.2). The same patch worked fine on anther identical laptop.

After fiddling around a bit I found out that for serial communication to work Max needs to be granted Full Disk Access permissions under Privacy & Security -> Full Disk Access.

There may be a more fine-grained option, but I didn't investigate it yet.

Just sharing in case someone else stumbles across this problem.