#! /usr/bin/env python3
#

import sys, time

if ( len(sys.argv) == 2 ):
    field_description = sys.argv[1]
    sleep_time = 1.0

elif ( len(sys.argv) == 3 ):
    field_description = sys.argv[1]
    sleep_time = float( sys.argv[2] )

else:
    print ( "" )
    print ( "Usage:  test_read field_name [sleep_time]" )
    print ( "" )
    sys.exit(0)

#  Add the Mp modules directory to the Python module load path.

sys.path[:0] = [ "/opt/mx/lib/mp" ]

import Mp

database_name = "/opt/mx/etc/mxmotor.dat"

mx_database = Mp.setup_database( database_name )

name_list = field_description.split( "." )

if ( len(name_list) != 2 ):
    print ( "" )
    print ( "The name should be in the form 'record_name.field_name" )
    print ( "" )
    sys.exit(0)

record_name = name_list[0]

mx_record = mx_database.get_record( name_list[0] )

field_name = name_list[1]

while (1):

    print( mx_record.read_field( field_name ) )

    time.sleep( sleep_time )