kopia lustrzana https://github.com/projecthorus/wenet
80 wiersze
2.2 KiB
Python
80 wiersze
2.2 KiB
Python
#!/usr/bin/env python
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#
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# Proof-of-concept code to transmit Wenet FSK using a FM rig with a 9600 baud input.
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# Currently just transmits example images.
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#
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# Notes:
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# I used a 5V FTDI USB-TTL adaptor, and an Icom IC-7000
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# DTR was wired directly to the PTT line on the 6-pin mini-DIN connector.
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# DTR Active (Low) = PTT enabled.
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# The TXD line was dropped in level using a 1k 10-turn potentiometer, and fed
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# into the DATA IN line on the 6-pin mini-DIN. The 10-turn pot was set so the
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# output Vp-p is about 0.3V, though I then did more adjustment looking at the
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# spectrum of the generated signal.
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#
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# This method of producing FSK is pretty nasty, and probably isn't recommended
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# for serious use.
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#
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# Copyright (C) 2019 Mark Jessop <vk5qi@rfhead.net>
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# Released under GNU GPL v3 or later
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#
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import PacketTX, sys, os, argparse
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# Set to whatever resolution you want to test.
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file_path = "../test_images/%d_320x240.ssdv" # _raw, _800x608, _640x480, _320x240
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image_numbers = xrange(1,14)
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debug_output = False # If True, packet bits are saved to debug.bin as one char per bit.
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def transmit_file(filename, tx_object):
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file_size = os.path.getsize(filename)
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if file_size % 256 > 0:
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print("File size not a multiple of 256 bytes!")
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return
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print("Transmitting %d Packets." % (file_size/256))
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f = open(filename,'rb')
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for x in range(file_size/256):
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data = f.read(256)
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tx_object.tx_packet(data)
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f.close()
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print("Waiting for tx queue to empty...")
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tx_object.wait()
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parser = argparse.ArgumentParser()
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parser.add_argument("--port", default='/dev/ttyUSB0', type=str, help="Serial port to use for transmit.")
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parser.add_argument("--baudrate", default=4800, type=int, help="Transmitter baud rate. Defaults to 4800 baud.")
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args = parser.parse_args()
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tx = PacketTX.PacketTX(debug=debug_output, serial_port=args.port, serial_baud=args.baudrate)
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# Start the transmit thread
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tx.start_tx()
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# Enable the PTT
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tx.s.dtr = True
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print("PTT ON!")
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print("TX Started. Press Ctrl-C to stop.")
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try:
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for img in image_numbers:
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filename = file_path % img
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print("\nTXing: %s" % filename)
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transmit_file(filename,tx)
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tx.close()
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except KeyboardInterrupt:
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print("Closing...")
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# Disable the PTT
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tx.s.dtr = False
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print("PTT Off")
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tx.close()
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