63 lines
1.6 KiB
Python
63 lines
1.6 KiB
Python
# -*- coding: UTF-8 -*-
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'''
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rtx - RetroText
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rtxModem: Modem-Funktionen
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by Anna Christina Naß <acn@acn.wtf>
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released under GPL
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'''
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import glob
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import serial
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import config
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import logging
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def init_modem():
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logging.debug("clearing input/output buffers")
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glob.ser.reset_input_buffer()
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glob.ser.reset_output_buffer()
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""" send the modem init strings to the modem """
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logging.debug("init_modem")
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if config.MODEM_INIT1 != "":
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logging.debug("sending MODEM_INIT1")
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glob.ser.write(bytes(config.MODEM_INIT1 + "\r", "latin-1"))
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rc = _serial_readline()
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logging.info("MODEM_INIT1: %s", rc)
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rc = _serial_readline()
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logging.info("MODEM_INIT1: %s", rc)
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if config.MODEM_INIT2 != "":
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logging.debug("sending MODEM_INIT2")
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glob.ser.write(bytes(config.MODEM_INIT2 + "\r", "latin-1"))
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rc = _serial_readline()
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logging.info("MODEM_INIT2: %s", rc)
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rc = _serial_readline()
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logging.info("MODEM_INIT2: %s", rc)
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def wait_for_caller():
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""" waits for the RING of the modem and answers it """
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modem_answered = False
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logging.debug("wait_for_caller")
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while not modem_answered:
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rc = _serial_readline()
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if rc.startswith(config.MODEM_RING):
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logging.info("modem ringing! Answering.")
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glob.ser.write(bytes(config.MODEM_ANSWER + "\r", "latin-1"))
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rc = _serial_readline()
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logging.info("Answer: %s", rc)
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rc = _serial_readline()
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logging.info("Answer: %s", rc)
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modem_answered=True
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else:
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modem_answered=False
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def _serial_readline():
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line = ""
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in_byte = ""
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while not in_byte == b"\n":
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in_byte = glob.ser.read(1)
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#print(in_byte)
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line += str(in_byte, encoding="latin-1")
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return line
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