# configure the serial interface PORT_LINUX ?= /dev/ttyUSB0 PORT_DARWIN ?= $(firstword $(sort $(wildcard /dev/tty.SLAB_USBtoUART*))) # Set RTS and DTR to 0 to release reset when RTS is connected to the reset pin # and DTR to GPIO0. PYTERMFLAGS += --set-rts 0 --set-dtr 0