This only seems to work for the /dev/cu.* device files. You can type Ctrl+C to terminate logging to cat.out. stty -f /dev/cu.usbserial 230400 & cat /dev/cu.usbserial executes stty, detaches it and then immediately performs the access to the serial device.įor one line command logging serial port /dev/tty.usbserial-X's output to cat.out and terminating the logging by pressing Ctrl+C, here is the solution: trap 'kill $(jobs -p)' SIGINT cat /dev/tty.usbserial-X | tee cat.out & stty -f /dev/tty.usbserial-X 115200. There is a small time window after executing stty, in which the access can be performed with the desired parameters, e.g. stty -f /dev/cu.usbserial 230400 to set the baud rate, the settings of the terminal accessed before will change. cat /dev/cu.usbserial, the default settings will be used at first. On Mac OS, stty seemingly can only change terminal settings for an ongoing access.Īccess the serial interface, e.g.
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