mirror of https://github.com/DJ2LS/FreeDATA.git
43 lines
1.4 KiB
Python
43 lines
1.4 KiB
Python
import threading
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import frame_handler_ping
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import helpers
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import data_frame_factory
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import frame_handler
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from message_system_db_messages import DatabaseManagerMessages
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import numpy as np
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class CQFrameHandler(frame_handler.FrameHandler):
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#def should_respond(self):
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# self.logger.debug(f"Respond to CQ: {self.config['MODEM']['respond_to_cq']}")
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# return bool(self.config['MODEM']['respond_to_cq'] and not self.states.getARQ())
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def follow_protocol(self):
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if self.states.getARQ():
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return
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self.logger.debug(
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f"[Modem] Responding to request from [{self.details['frame']['origin']}]",
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snr=self.details['snr'],
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)
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self.send_ack()
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def send_ack(self):
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factory = data_frame_factory.DataFrameFactory(self.config)
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qrv_frame = factory.build_qrv(self.details['snr'])
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# wait some random time and wait if we have an ongoing codec2 transmission
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# on our channel. This should prevent some packet collision
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random_delay = np.random.randint(0, 6)
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threading.Event().wait(random_delay)
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self.states.channel_busy_condition_codec2.wait(5)
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self.transmit(qrv_frame)
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if self.config["MESSAGES"]["enable_auto_repeat"]:
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# set message to queued if CQ received
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DatabaseManagerMessages(self.event_manager).set_message_to_queued_for_callsign(self.details['frame']["origin"])
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