ekmmeters.py
def setMeterPassword(self, new_pwd, pwd="00000000"):
        """ Serial Call to set meter password.  USE WITH CAUTION.

        Args:
            new_pwd (str): 8 digit numeric password to set
            pwd (str): Old 8 digit numeric password.

        Returns:
            bool: True on completion with ACK.
        """
        result = False
        self.setContext("setMeterPassword")
        try:
            if len(new_pwd) != 8 or len(pwd) != 8:
                self.writeCmdMsg("Passwords must be exactly eight characters.")
                self.setContext("")
                return result

            if not self.request(False):
                self.writeCmdMsg("Pre command read failed: check serial line.")
            else:
                if not self.serialCmdPwdAuth(pwd):
                    self.writeCmdMsg("Password failure")
                else:
                    req_pwd = binascii.hexlify(new_pwd.zfill(8))
                    req_str = "015731023030323028" + req_pwd + "2903"
                    req_str += self.calc_crc16(req_str[2:].decode("hex"))
                    self.m_serial_port.write(req_str.decode("hex"))
                    if self.m_serial_port.getResponse(self.getContext()).encode("hex") == "06":
                        self.writeCmdMsg("Success(setMeterPassword): 06 returned.")
                        result = True
            self.serialPostEnd()
        except:
            ekm_log(traceback.format_exc(sys.exc_info()))

        self.setContext("")
        return result
def setMeterPassword(self, new_pwd, pwd="00000000"):
        """ Serial Call to set meter password.  USE WITH CAUTION.

        Args:
            new_pwd (str): 8 digit numeric password to set
            pwd (str): Old 8 digit numeric password.

        Returns:
            bool: True on completion with ACK.
        """
        result = False
        self.setContext("setMeterPassword")
        try:
            if len(new_pwd) != 8 or len(pwd) != 8:
                self.writeCmdMsg("Passwords must be exactly eight characters.")
                self.setContext("")
                return result

            if not self.request(False):
                self.writeCmdMsg("Pre command read failed: check serial line.")
            else:
                if not self.serialCmdPwdAuth(pwd):
                    self.writeCmdMsg("Password failure")
                else:
                    req_pwd = binascii.hexlify(new_pwd.zfill(8))
                    req_str = "015731023030323028" + req_pwd + "2903"
                    req_str += self.calc_crc16(req_str[2:].decode("hex"))
                    self.m_serial_port.write(req_str.decode("hex"))
                    if self.m_serial_port.getResponse(self.getContext()).encode("hex") == "06":
                        self.writeCmdMsg("Success(setMeterPassword): 06 returned.")
                        result = True
            self.serialPostEnd()
        except:
            ekm_log(traceback.format_exc(sys.exc_info()))

        self.setContext("")
        return result
Serial Call to set meter password.  USE WITH CAUTION.

        Args:
            new_pwd (str): 8 digit numeric password to set
            pwd (str): Old 8 digit numeric password.

        Returns:
            bool: True on completion with ACK.