mirror of
https://github.com/DJ2LS/FreeDATA
synced 2024-05-14 08:04:33 +00:00
54 lines
1.5 KiB
Python
54 lines
1.5 KiB
Python
import queue, threading
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import codec2
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import data_frame_factory
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import structlog
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class ARQSession():
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MODE_BY_SPEED = [
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codec2.FREEDV_MODE.datac4.value,
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codec2.FREEDV_MODE.datac3.value,
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codec2.FREEDV_MODE.datac1.value,
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]
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def __init__(self, config: dict, tx_frame_queue: queue.Queue, dxcall: str):
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self.logger = structlog.get_logger(type(self).__name__)
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self.config = config
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self.dxcall = dxcall
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self.tx_frame_queue = tx_frame_queue
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self.speed_level = 0
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self.frame_factory = data_frame_factory.DataFrameFactory(self.config)
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self.id = None
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# 3 bytes for the BOF Beginning of File indicator in a data frame
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self.data_frame_bof = b"BOF"
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# 3 bytes for the EOF End of File indicator in a data frame
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self.data_frame_eof = b"EOF"
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def get_mode_by_speed_level(self, speed_level):
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return self.MODE_BY_SPEED[speed_level]
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def transmit_frame(self, frame: bytearray):
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self.logger.info("Transmitting frame")
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modem_queue_item = {
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'mode': self.get_mode_by_speed_level(self.speed_level),
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'repeat': 1,
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'repeat_delay': 1,
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'frame': frame,
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}
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self.tx_frame_queue.put(modem_queue_item)
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def setState(self, state):
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self.state = state
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self.logger.info(f"state changed to {state}")
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def get_payload_size(self, speed_level):
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mode = self.MODE_BY_SPEED[speed_level]
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return codec2.get_bytes_per_frame(mode)
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