I notice this behaviour :
My serial port is set to the default usb port on itsibitsy M4
I want to output data on the second serial port using this :
(defun main () (with-serial (str 1 96) (princ "hallo" str)))
this just gives a glitch on the tx line using an oscilloscoop.
changing it to:
(defun main () (with-serial (str 1 96) (loop (princ "hallo" str))))
prints out correct
I also tried on on an mkrzero , with the same result. Am I doing something wrong or is this normal ?