#!/bin/bash # first device connected idf.py -DROLE=SENDER build ret_val=$? if (($ret_val != 0)); then exit fi if [$1 == '']; then idf.py flash -p /dev/ttyUSB0 idf.py -p /dev/ttyUSB0 monitor -B 450000 else idf.py flash -p $1 idf.py -p $1 monitor -B 450000 fi