mirror of
https://github.com/DJ2LS/FreeDATA
synced 2024-05-14 08:04:33 +00:00
added more arq frames
This commit is contained in:
parent
618bf3ae4b
commit
27e05d2d8e
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@ -20,24 +20,25 @@ class TxCommand():
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pass
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def log_message(self):
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message = f"Running {self.get_name()}"
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return message
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return f"Running {self.get_name()}"
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def build_frame(self):
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pass
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def get_tx_mode(self):
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c2_mode = FREEDV_MODE.fsk_ldpc_0.value if self.config['MODEM']['enable_fsk'] else FREEDV_MODE.sig0.value
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return c2_mode
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return (
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FREEDV_MODE.fsk_ldpc_0.value
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if self.config['MODEM']['enable_fsk']
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else FREEDV_MODE.sig0.value
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)
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def make_modem_queue_item(self, mode, repeat, repeat_delay, frame):
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item = {
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return {
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'mode': self.get_tx_mode(),
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'repeat': 1,
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'repeat_delay': 0,
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'frame': frame
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'frame': frame,
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}
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return item
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def transmit(self, tx_frame_queue):
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frame = self.build_frame()
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@ -48,4 +49,3 @@ class TxCommand():
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self.emit_event(event_queue)
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self.logger.info(self.log_message())
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self.transmit(tx_frame_queue)
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pass
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@ -7,14 +7,14 @@ How to use this class:
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builder = DataFrameFactory()
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payload = {
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"mycallsign" : helpers.callsign_to_bytes("DJ2LS-9"),
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"origin" : helpers.callsign_to_bytes("DJ2LS-9"),
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"gridsquare": helpers.encode_grid("JN49ea"),
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"data": bytes(4)
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}
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frame = builder.construct(FR_TYPE.CQ, payload)
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decoded_frame = builder.deconstruct(frame)
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decoded_frame: {'frame_type': 'CQ', 'mycallsign': b'DJ2LS-9', 'gridsquare': 'JN49EA', 'data': bytearray(b'\x00\x00\x00\x00')}
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decoded_frame: {'frame_type': 'CQ', 'origin': b'DJ2LS-9', 'gridsquare': 'JN49EA', 'data': bytearray(b'\x00\x00\x00\x00')}
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"""
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@ -39,14 +39,14 @@ class DataFrameFactory:
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# cq frame
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self.template_list[FR_TYPE.CQ.value] = {
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"frame_length": self.LENGTH_SIG0_FRAME,
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"mycallsign": 6,
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"origin": 6,
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"gridsquare": 4
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}
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# qrv frame
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self.template_list[FR_TYPE.QRV.value] = {
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"frame_length": self.LENGTH_SIG0_FRAME,
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"mycallsign": 6,
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"origin": 6,
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"gridsquare": 4,
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"snr": 1
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}
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@ -54,7 +54,7 @@ class DataFrameFactory:
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# beacon frame
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self.template_list[FR_TYPE.BEACON.value] = {
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"frame_length": self.LENGTH_SIG0_FRAME,
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"mycallsign": 6,
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"origin": 6,
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"gridsquare": 4
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}
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@ -62,16 +62,16 @@ class DataFrameFactory:
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# ping frame
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self.template_list[FR_TYPE.PING.value] = {
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"frame_length": self.LENGTH_SIG0_FRAME,
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"dxcallsign_crc": 3,
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"mycallsign_crc": 3,
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"mycallsign": 6
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"destination_crc": 3,
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"origin_crc": 3,
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"origin": 6
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}
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def _load_fec_templates(self):
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# fec wakeup frame
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self.template_list[FR_TYPE.FEC_WAKEUP.value] = {
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"frame_length": self.LENGTH_SIG0_FRAME,
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"mycallsign": 6,
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"origin": 6,
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"mode": 1,
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"n_bursts": 1,
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}
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@ -85,7 +85,7 @@ class DataFrameFactory:
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# fec is writing frame
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self.template_list[FR_TYPE.IS_WRITING.value] = {
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"frame_length": self.LENGTH_SIG0_FRAME,
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"mycallsign": 6
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"origin": 6
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}
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def _load_arq_templates(self):
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@ -93,16 +93,53 @@ class DataFrameFactory:
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# same structure for narrow and wide types
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arq_dc_open_ack = {
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"frame_length": self.LENGTH_SIG0_FRAME,
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"dxcallsign_crc": 3,
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"mycallsign_crc": 3,
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"mycallsign": 6,
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"destination_crc": 3,
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"origin_crc": 3,
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"origin": 6,
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"session_id": 1,
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}
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# arq connect frames
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self.template_list[FR_TYPE.ARQ_DC_OPEN_ACK_N.value] = arq_dc_open_ack
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self.template_list[FR_TYPE.ARQ_DC_OPEN_ACK_W.value] = arq_dc_open_ack
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# arq burst ack
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self.template_list[FR_TYPE.BURST_ACK.value] = {
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"frame_length": self.LENGTH_SIG1_FRAME,
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"session_id": 1,
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"snr":1,
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"speed_level": 1,
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"len_arq_rx_frame_buffer": 4
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}
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# arq frame ack TODO We should rename this to "session ack"
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self.template_list[FR_TYPE.FR_ACK.value] = {
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"frame_length": self.LENGTH_SIG1_FRAME,
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"session_id": 1,
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"snr":1
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}
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# arq burst nack
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self.template_list[FR_TYPE.BURST_NACK.value] = {
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"frame_length": self.LENGTH_SIG1_FRAME,
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"session_id": 1,
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"snr": 1,
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"speed_level": 1,
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"len_arq_rx_frame_buffer": 4,
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"n_frames_per_burst": 1
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}
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# arq frame nack --> TODO We should rename this to "session nack"
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self.template_list[FR_TYPE.FR_NACK.value] = {
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"frame_length": self.LENGTH_SIG1_FRAME,
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"session_id": 1,
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"snr": 1,
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"speed_level": 1,
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"len_arq_rx_frame_buffer": 4,
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"n_frames_per_burst": 1
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}
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def construct(self, frametype, content):
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frame_template = self.template_list[frametype.value]
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frame_length = frame_template["frame_length"]
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@ -135,7 +172,7 @@ class DataFrameFactory:
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data = frame[buffer_position: buffer_position + item_length]
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# Process the data based on the key
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if key in ["mycallsign", "dxcallsign"]:
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if key in ["origin", "destination"]:
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extracted_data[key] = helpers.bytes_to_callsign(data).decode()
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elif key == "gridsquare":
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@ -162,24 +199,24 @@ class DataFrameFactory:
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# get number of bytes per frame for mode
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return int(codec2.api.freedv_get_bits_per_modem_frame(freedv) / 8)
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def build_ping(self, dxcallsign):
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def build_ping(self, destination):
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payload = {
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"dxcallsign_crc": helpers.get_crc_24(dxcallsign),
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"mycallsign_crc": helpers.get_crc_24(self.myfullcall),
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"mycallsign": helpers.callsign_to_bytes(self.myfullcall),
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"destination_crc": helpers.get_crc_24(destination),
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"origin_crc": helpers.get_crc_24(self.myfullcall),
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"origin": helpers.callsign_to_bytes(self.myfullcall),
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}
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return self.construct(FR_TYPE.PING, payload)
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def build_cq(self):
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payload = {
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"mycallsign": helpers.callsign_to_bytes(self.myfullcall),
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"origin": helpers.callsign_to_bytes(self.myfullcall),
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"gridsquare": helpers.encode_grid(self.mygrid)
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}
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return self.construct(FR_TYPE.CQ, payload)
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def build_qrv(self, snr):
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payload = {
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"mycallsign": helpers.callsign_to_bytes(self.myfullcall),
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"origin": helpers.callsign_to_bytes(self.myfullcall),
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"gridsquare": helpers.encode_grid(self.mygrid),
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"snr": helpers.snr_to_bytes(snr)
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}
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@ -187,14 +224,14 @@ class DataFrameFactory:
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def build_beacon(self):
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payload = {
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"mycallsign": helpers.callsign_to_bytes(self.myfullcall),
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"origin": helpers.callsign_to_bytes(self.myfullcall),
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"gridsquare": helpers.encode_grid(self.mygrid)
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}
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return self.construct(FR_TYPE.BEACON, payload)
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def build_fec_is_writing(self):
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payload = {
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"mycallsign": helpers.callsign_to_bytes(self.myfullcall),
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"origin": helpers.callsign_to_bytes(self.myfullcall),
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}
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return self.construct(FR_TYPE.IS_WRITING, payload)
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@ -202,7 +239,7 @@ class DataFrameFactory:
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mode_int = codec2.freedv_get_mode_value_by_name(mode)
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payload = {
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"mycallsign": helpers.callsign_to_bytes(self.myfullcall),
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"origin": helpers.callsign_to_bytes(self.myfullcall),
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"mode": bytes([mode_int]),
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"n_bursts": bytes([1]) # n payload bursts,
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@ -223,20 +260,78 @@ class DataFrameFactory:
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test_frame[:1] = bytes([FR_TYPE.TEST_FRAME.value])
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return test_frame
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def build_arq_connect(self, isWideband, dxcallsign, session_id):
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def build_arq_connect(self, isWideband, destination, session_id):
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payload = {
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"dxcallsign_crc": helpers.get_crc_24(dxcallsign),
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"mycallsign_crc": helpers.get_crc_24(self.myfullcall),
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"mycallsign": helpers.callsign_to_bytes(self.myfullcall),
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"destination_crc": helpers.get_crc_24(destination),
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"origin_crc": helpers.get_crc_24(self.myfullcall),
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"origin": helpers.callsign_to_bytes(self.myfullcall),
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"session_id": session_id.to_bytes(1, 'big'),
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}
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if isWideband:
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type = FR_TYPE.ARQ_DC_OPEN_ACK_W
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else:
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type = FR_TYPE.ARQ_DC_OPEN_ACK_N
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channel_type = FR_TYPE.ARQ_DC_OPEN_ACK_W if isWideband else FR_TYPE.ARQ_DC_OPEN_ACK_N
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return self.construct(channel_type, payload)
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return self.construct(type, payload)
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def build_arq_burst_ack(self, session_id: bytes, snr: int, speed_level: int, len_arq_rx_frame_buffer: int):
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# ack_frame = bytearray(self.length_sig1_frame)
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# ack_frame[:1] = bytes([FR_TYPE.BURST_ACK.value])
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# ack_frame[1:2] = self.session_id
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# ack_frame[2:3] = helpers.snr_to_bytes(snr)
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# ack_frame[3:4] = bytes([int(self.speed_level)])
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# ack_frame[4:8] = len(self.arq_rx_frame_buffer).to_bytes(4, byteorder="big")
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payload = {
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"session_id": session_id,
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"snr": helpers.snr_to_bytes(snr),
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"speed_level": bytes([speed_level]),
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"len_arq_rx_frame_buffer": bytes([len_arq_rx_frame_buffer])
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}
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return self.construct(FR_TYPE.BURST_ACK, payload)
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def build_arq_frame_ack(self, session_id: bytes, snr: int):
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# ack_frame = bytearray(self.length_sig1_frame)
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# ack_frame[:1] = bytes([FR_TYPE.FR_ACK.value])
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# ack_frame[1:2] = self.session_id
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# ack_frame[2:3] = helpers.snr_to_bytes(snr)
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payload = {
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"session_id": session_id,
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"snr": helpers.snr_to_bytes(snr)
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}
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return self.construct(FR_TYPE.FR_ACK, payload)
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def build_arq_burst_nack(self, session_id: bytes, snr: int, speed_level: int, len_arq_rx_frame_buffer: int, n_frames_per_burst: int):
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# nack_frame = bytearray(self.length_sig1_frame)
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# nack_frame[:1] = bytes([FR_TYPE.BURST_NACK.value])
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# nack_frame[1:2] = self.session_id
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# nack_frame[2:3] = helpers.snr_to_bytes(0)
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# nack_frame[3:4] = bytes([int(self.speed_level)])
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# nack_frame[4:5] = bytes([int(tx_n_frames_per_burst)])
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# nack_frame[5:9] = len(self.arq_rx_frame_buffer).to_bytes(4, byteorder="big")
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payload = {
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"session_id": session_id,
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"snr": helpers.snr_to_bytes(snr),
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"speed_level": bytes([speed_level]),
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"len_arq_rx_frame_buffer": bytes([len_arq_rx_frame_buffer]),
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"n_frames_per_burst": bytes([n_frames_per_burst])
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}
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return self.construct(FR_TYPE.BURST_NACK, payload)
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def build_arq_frame_nack(self, session_id: bytes, snr: int, speed_level: int, len_arq_rx_frame_buffer: int, n_frames_per_burst: int):
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# nack_frame = bytearray(self.length_sig1_frame)
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# nack_frame[:1] = bytes([FR_TYPE.FR_NACK.value])
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# nack_frame[1:2] = self.session_id
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# nack_frame[2:3] = helpers.snr_to_bytes(snr)
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# nack_frame[3:4] = bytes([int(self.speed_level)])
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# nack_frame[4:8] = len(self.arq_rx_frame_buffer).to_bytes(4, byteorder="big")
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payload = {
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"session_id": session_id,
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"snr": helpers.snr_to_bytes(snr),
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"speed_level": bytes([speed_level]),
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"len_arq_rx_frame_buffer": bytes([len_arq_rx_frame_buffer]),
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"n_frames_per_burst": bytes([n_frames_per_burst])
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}
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return self.construct(FR_TYPE.FR_NACK, payload)
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@ -194,11 +194,12 @@ class DISPATCHER():
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# we could also create an own function, which returns True.
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#deconstructed_frame["mycallsign"]
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deconstructed_frame["destination_crc"]
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deconstructed_frame["origin_crc"]
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# check for callsign CRC
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_valid1, _ = helpers.check_callsign(self.arq.mycallsign, bytes(bytes_out[1:4]), self.arq.ssid_list)
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_valid2, _ = helpers.check_callsign(self.arq.mycallsign, bytes(bytes_out[2:5]), self.arq.ssid_list)
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_valid1, _ = helpers.check_callsign(self.arq.mycallsign, deconstructed_frame["destination_crc"], self.arq.ssid_list)
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_valid2, _ = helpers.check_callsign(self.arq.mycallsign, deconstructed_frame["origin_crc"], self.arq.ssid_list)
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# check for session ID
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_valid3 = helpers.check_session_id(self.arq.session_id, bytes(bytes_out[1:2])) # signalling frames
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_valid4 = helpers.check_session_id(self.arq.session_id, bytes(bytes_out[2:3])) # arq data frames
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