espy.py

#! /usr/bin/env python
importsys
importserial
importtime

defprint_usage():
print("Usage: espy.py <serial_port>[:baud_rate] <command> [<args>]")
print("Commands:")
print(" status")
print(" reset")
print(" join <ssid> <password>")
print(" leave")

defsend_command(ser, command, delay=1):
ser.write((command+'\r\n').encode())
time.sleep(delay)
response=ser.read_all().decode(errors='ignore')
print(response)

defmain():
iflen(sys.argv) <3:
print_usage()
sys.exit(1)

port_info=sys.argv[1].split(':')
port=port_info[0]
baud_rate=int(port_info[1]) iflen(port_info) >1else9600
command=sys.argv[2]

try:
ser=serial.Serial(port, baud_rate, timeout=15 , rtscts=False)
exceptserial.SerialExceptionase:
print(f"Error opening serial port {port}: {e}")
sys.exit(1)

ifcommand=="status":
forcmdin ["AT", "AT+GMR", "AT+CWMODE?", "AT+CWJAP?", "AT+CIFSR"]:
send_command(ser, cmd)
elifcommand=="reset":
send_command(ser, "AT+RST")
elifcommand=="join":
iflen(sys.argv) <5:
print("Error: join command requires ssid and password")
print_usage()
sys.exit(1)
ssid=sys.argv[3]
password=sys.argv[4]
send_command(ser, 'AT+CWMODE=1')
send_command(ser, f'AT+CWJAP="{ssid}","{password}"')
elifcommand=="leave":
send_command(ser, "AT+CWQAP")
else:
print(f"Unknown command: {command}")
print_usage()
sys.exit(1)

ser.close()

if__name__=="__main__":
main()