import time

import serial

conn = serial.Serial(
    "/dev/ttyUSB0",
    baudrate=115200,
    stopbits=serial.STOPBITS_ONE,
    parity=serial.PARITY_NONE,
    bytesize=serial.EIGHTBITS,
    timeout=1
)

cmd_list = (("*IDN?\n", True),  # QUERY ID
            ("CONF:RES 500\n", False),  # SET RESISTANCE MEASURE, 500 Ohm range
            ("MEAS?\n", True),  # GET MEASURE
            ("MEAS?\n", True),  # GET MEASURE
            ("MEAS?\n", True))  # GET MEASURE

for cmditem in cmd_list:
    cmd, expect_response = cmditem
    conn.write(bytes(cmd, encoding="ascii"))
    if expect_response:
        response = conn.readline()
        print(f"{cmd} RESPONSE: " + response.decode("ascii"))
    else:
        print(f"{cmd}")
    time.sleep(1)
conn.close()