# -*- coding: utf-8 -*-
"""
Created on Mon Oct 10 12:41:44 2022

@author: gac-x01dc
"""

# Sends a command to the instrument
# SIM900 is the VISA resource for the SIM900
# port_number is the port number of the instrument to be controlled
# instrument_command is the command to be sent
def send_command(SIM900, port_number, instrument_command):
    SIM900_command = "SNDT "+str(port_number)+", \""+instrument_command+"\""
    SIM900.write(SIM900_command)

# Send a query to the instrument and get a response - CURRENTLY BROKEN
# SIM900 is the VISA resource for the SIM900
# port_number is the port number of the instrument to be controlled
# instrument_query is the query to be sent
# response_bytes is the maximum number of bytes in the response
def send_query(SIM900, port_number, instrument_query, response_bytes=7):
    send_command(SIM900, port_number, instrument_query)
    SIM900_command = "GETN? "+str(port_number)+", " + str(response_bytes)
    full_response = SIM900.query(SIM900_command)
    print("full_response="+full_response)
    response = full_response[5:]
    print("response="+response)
    return(response)
    
# Flushes input & output buffers of specified port
def flush_port(SIM900, port_number):
    SIM900_command = "FLSH "+str(port_number)
    SIM900.write(SIM900_command)
    
# Flushes output queue of mainframe
def flush_main(SIM900):
    SIM900_command = "FLOQ"
    SIM900.write(SIM900_command)

# Resets all ports
def reset(SIM900):
    SIM900_command = "SRST"
    SIM900.write(SIM900_command)