Source code for ppf_moke.powersupply

import socket
from time import sleep


remote_ip = '169.254.99.154'  # should match the instrument’s IP address
port = 10001  # the port number of the instrument service


def open_connection():
    """ opens the serial connection with the powersupply
    """

    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect((remote_ip, port))
    nay = b'#NAK\r'

    s.send(b'MON\r')

    if s.recv(port) == nay:
        s.send(b'MRESET\r')
        s.recv(port)
    return(s)


def close_connection(s):
    """ closes the given serial connection with the powersupply should be done at the end of the  measurement script
    """
    s.close()


def shutdown_connection(s):
    """ shuts down the serial connection with the powersupply should be done at the end of the  measurement script
    """
    s.shutdown(socket.SHUT_RDWR)
    s.close()


def set_current(s, current):
    """ sets a current via a given serial connection to the powersupply
    """
    com = f'MRM:{current}\r'
    s.send(bytes(com, encoding='utf-8'))
    sleep(0.2)
    s.recv(port)


def read_current(s):
    """ reads the current via a given serial connection to the powersupply
    """
    s.send(b'MRI\r')
    sleep(0.25)
    v = s.recv(port).decode("utf-8")[5:]
    return(float(v))


def test():
    """ prints a confirmation to the console if the module is properly loaded """

    print("powersupply module is working")