mirror of
https://github.com/DJ2LS/FreeDATA
synced 2024-05-14 08:04:33 +00:00
68 lines
2.7 KiB
Python
68 lines
2.7 KiB
Python
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from modem_frametypes import FRAME_TYPE as FR_TYPE
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import helpers
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class DataFrameFactory:
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def __init__(self, modem_config, modem_state, **data):
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self.modem_config = modem_config
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self.modem_state = modem_state
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self.data = data
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self.myfullcall = f"{modem_config['STATION']['mycall']}-{modem_config['STATION']['myssid']}"
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def build(self):
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build_method = getattr(self, self.type.name)
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return build_method()
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def build_ping(self):
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ping_frame = bytearray(self.length_sig0_frame)
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ping_frame[:1] = bytes(self.type.value)
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ping_frame[1:4] = helpers.get_crc_24(self.data['dxcallsign'])
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ping_frame[4:7] = helpers.get_crc_24(self.myfullcall)
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ping_frame[7:13] = helpers.callsign_to_bytes(self.myfullcall)
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return ping_frame
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def build_cq(self):
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cq_frame = bytearray(self.length_sig0_frame)
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cq_frame[:1] = bytes([FR_TYPE.CQ.value])
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cq_frame[1:7] = helpers.callsign_to_bytes(self.mycallsign)
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cq_frame[7:11] = helpers.encode_grid(self.mygrid)
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return cq_frame
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def build_fec_is_writing(self):
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fec_frame = bytearray(14)
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fec_frame[:1] = bytes([FR_TYPE.IS_WRITING.value])
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fec_frame[1:7] = helpers.callsign_to_bytes(mycallsign)
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return fec_frame
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def build_qrv(self):
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qrv_frame = bytearray(self.length_sig0_frame)
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qrv_frame[:1] = bytes([FR_TYPE.QRV.value])
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qrv_frame[1:7] = helpers.callsign_to_bytes(self.mycallsign)
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qrv_frame[7:11] = helpers.encode_grid(self.mygrid)
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qrv_frame[11:12] = helpers.snr_to_bytes(snr)
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return qrv_frame
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def build_beacon(self):
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beacon_frame = bytearray(self.length_sig0_frame)
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beacon_frame[:1] = bytes([FR_TYPE.BEACON.value])
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beacon_frame[1:7] = helpers.callsign_to_bytes(self.mycallsign)
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beacon_frame[7:11] = helpers.encode_grid(self.mygrid)
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return beacon_frame
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def build_fec_wakeup(self):
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mode_int_wakeup = codec2.freedv_get_mode_value_by_name("sig0")
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payload_per_wakeup_frame = modem.get_bytes_per_frame(mode_int_wakeup) - 2
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fec_wakeup_frame = bytearray(payload_per_wakeup_frame)
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fec_wakeup_frame[:1] = bytes([FR_TYPE.FEC_WAKEUP.value])
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fec_wakeup_frame[1:7] = helpers.callsign_to_bytes(mycallsign)
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fec_wakeup_frame[7:8] = bytes([mode_int])
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fec_wakeup_frame[8:9] = bytes([1]) # n payload bursts
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return fec_wakeup_frame
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def build_fec(self):
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fec_frame = bytearray(payload_per_frame)
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fec_frame[:1] = bytes([FR_TYPE.FEC.value])
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fec_frame[1:payload_per_frame] = bytes(payload[:fec_payload_length])
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return fec_frame
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