def do_send(self, arg):
"form an send a packet with all custom data\n Usage: send then follow prompts\nType -cancel to cancel"
if self.callsign == None:
print("Set your callsign with 'callsign <callsign>'")
else:
dest, digi, info = "", "", ""
print(
"Enter Destination, leaving blank is accpetable\n ex: 'KN6EVU'"
)
dest = input(">> ")
if dest.lower() == "-cancel":
print("Canceled")
return
print(
"Enter Digipeaters, leaving blank is accpetable\n ex: 'WIDE1-1,WIDE2-1'"
)
digi = input(">> ")
if digi.lower() == "-cancel":
print("Canceled")
return
while info == "":
print(
"Enter Packet Info, leaving blank is NOT accpetable\n ex: ':EMAIL :[email protected] Test email'"
)
info = input(">> ")
if info == "-cancel":
print("Canceled")
else:
print("Dest: %s | Source: %s | Digis: %s | %s |" %
(dest, self.callsign, digi, info))
pack_data = packet.gen_packet(self.callsign.encode(),
dest.encode(), digi.encode(),
info.encode())
audio = afsk.encode(pack_data.unparse())
audiogen.play(audio, blocking=True)
def main(arguments=None):
parser = argparse.ArgumentParser(description="")
parser.add_argument("-c", "--callsign", required=True, help="Your ham callsign. REQUIRED.")
parser.add_argument("info", metavar="INFO", help="APRS message body")
parser.add_argument(
"--destination", default=b"APRS", help="AX.25 destination address. See http://www.aprs.org/aprs11/tocalls.txt"
)
parser.add_argument(
"-d", "--digipeaters", default=b"WIDE1-1,WIDE2-1", help="Comma separated list of digipeaters to address."
)
parser.add_argument("-o", "--output", default=None, help="Write audio to wav file. Use '-' for stdout.")
parser.add_argument("-v", "--verbose", action="count", help="Print more debugging output.")
args = parser.parse_args(args=arguments)
if args.verbose == 0:
logging.basicConfig(level=logging.INFO)
elif args.verbose >= 1:
logging.basicConfig(level=logging.DEBUG)
packet = UI(
destination=args.destination, source=args.callsign, info=args.info, digipeaters=args.digipeaters.split(b",")
)
print("Sending packet: '{0}'".format(packet))
logger.debug(r"Packet bits:\n{0!r}".format(packet.unparse()))
audio = afsk.encode(packet.unparse())
if args.output == "-":
audiogen.sampler.write_wav(sys.stdout, audio)
elif args.output is not None:
with open(args.output, "wb") as f:
audiogen.sampler.write_wav(f, audio)
else:
audiogen.sampler.play(audio, blocking=True)
def main(arguments=None):
parser = argparse.ArgumentParser(description='')
parser.add_argument('-c',
'--callsign',
required=True,
help='Your ham callsign. REQUIRED.')
parser.add_argument('info', metavar='INFO', help='APRS message body')
parser.add_argument(
'--destination',
default=b'APRS',
help=
'AX.25 destination address. See http://www.aprs.org/aprs11/tocalls.txt'
)
parser.add_argument(
'-d',
'--digipeaters',
'--path',
default=b'WIDE1-1,WIDE2-1',
help=
'Digipeater path to use. "New Paradigm" recommendations are "WIDE1-1,WIDE2-1" for mobile and "WIDE2-1" for fixed stations. Defaults to "WIDE1-1,WIDE2-1."'
)
parser.add_argument('-o',
'--output',
default=None,
help='Write audio to wav file. Use \'-\' for stdout.')
parser.add_argument('-v',
'--verbose',
action='count',
help='Print more debugging output.')
args = parser.parse_args(args=arguments)
if args.verbose == 0:
logging.basicConfig(level=logging.INFO)
elif args.verbose >= 1:
logging.basicConfig(level=logging.DEBUG)
packet = UI(
destination=args.destination,
source=args.callsign,
info=args.info,
digipeaters=args.digipeaters.split(b','),
)
logger.info(r"Sending packet: '{0}'".format(packet))
logger.debug(r"Packet bits:\n{0!r}".format(packet.unparse()))
audio = afsk.encode(packet.unparse())
if args.output == '-':
audiogen.sampler.write_wav(sys.stdout, audio)
elif args.output is not None:
with open(args.output, 'wb') as f:
audiogen.sampler.write_wav(f, audio)
else:
audiogen.sampler.play(audio, blocking=True)
def send_aprs(aprs_info, frequency=config.APRS_FREQUENCY,
ssid=config.APRS_SSID, aprs_path=config.APRS_PATH,
aprs_destination=b'APRS', full_power=False):
"""Transmits the given APRS message via the DRA818 transceiver.
Args:
aprs_info (str): The actual APRS payload.
frequency (float): The frequency in MHz. Must be a multiple of
25 KHz and within the allowed ham radio band allocation.
ssid (str): The APRS SSID (e.g. 'CALLSIGN-7')
aprs_path (str): The APRS path.
aprs_destination (str): The APRS destination. Needed for telemetry
definitions, since they have to be addressed to the SSID of the
sender of the telemetry data packages.
full_power (boolean): True sets the RF power level to the
maximum of 1 W, False sets it to 0.5W.
Returns:
True: Transmission successful.
False: Transmission failed.
"""
try:
# See https://github.com/casebeer/afsk
packet = afsk.ax25.UI(
destination=aprs_destination,
source=ssid,
info=aprs_info,
digipeaters=aprs_path.split(b','))
logging.info(r"APRS packet content: '{0}'".format(packet))
# fn = os.path.join(config.USB_DIR, 'aprs.wav')
#TODO
fn = '/home/pi/aprs.wav'
logging.info('Now generating file %s for APRS packet.' % fn)
audio = afsk.encode(packet.unparse())
with open(fn, 'wb') as f:
audiogen.sampler.write_wav(f, audio)
# TODO: It would be better to play the APRS directly from memory,
# but setting up PyAudio on Raspbian did not work.
# So we take the USB stick instead of the SDCARD in order to
# minimize wear-off on the latter.
# The downside is that failure of the USB stick will break
# APRS completely.
if not os.path.exists(fn):
logging.error('Error: Problem generating APRS wav file.')
return False
logging.info('Sending APRS packet from %s via %s [%f MHz]' % (
ssid, aprs_path, frequency))
# When converting APRS string to audio using Bell 202, mind the
# pre-emphasis problems, see pre-emphasis settings, see also
# http://www.febo.com/packet/layer-one/transmit.html
# but this is already done:
# transceiver.set_filters(pre_emphasis=config.PRE_EMPHASIS)
# TODO: Think about software-based volume / modulation control
# maybe using ALSA via Python wrapper, see e.g.
# http://larsimmisch.github.io/pyalsaaudio/pyalsaaudio.html#alsa-and-python
# Also see
# http://www.forum-raspberrypi.de/Thread-suche-python-befehl-fuer-den-alsa-amixer
attempts = 0
while attempts < 3:
try:
transceiver = dra818.DRA818(
uart=config.SERIAL_PORT_TRANSCEIVER,
ptt_pin=config.DRA818_PTT,
power_down_pin=config.DRA818_PD,
rf_power_level_pin=config.DRA818_HL,
frequency=frequency,
squelch_level=config.SQUELCH)
break
except dra818.DRA818_Error:
attempts += 1
logging.warning(
'Warning: Problem setting up transceiver, retrying.')
attempts = 0
while attempts < 3:
status = transceiver.transmit_audio_file(
frequency, [fn], full_power=full_power)
if status:
break
else:
attempts += 1
try:
os.remove(fn)
except OSError:
pass
except Exception as msg:
logging.exception(msg)
finally:
transceiver.stop_transmitter()
return status
def send_aprs(aprs_info,
frequency=config.APRS_FREQUENCY,
ssid=config.APRS_SSID,
aprs_path=config.APRS_PATH,
aprs_destination=b'APRS',
full_power=False):
"""Transmits the given APRS message via the DRA818 transceiver.
Args:
aprs_info (str): The actual APRS payload.
frequency (float): The frequency in MHz. Must be a multiple of
25 KHz and within the allowed ham radio band allocation.
ssid (str): The APRS SSID (e.g. 'CALLSIGN-7')
aprs_path (str): The APRS path.
aprs_destination (str): The APRS destination. Needed for telemetry
definitions, since they have to be addressed to the SSID of the
sender of the telemetry data packages.
full_power (boolean): True sets the RF power level to the
maximum of 1 W, False sets it to 0.5W.
Returns:
True: Transmission successful.
False: Transmission failed.
"""
try:
# See https://github.com/casebeer/afsk
packet = afsk.ax25.UI(destination=aprs_destination,
source=ssid,
info=aprs_info,
digipeaters=aprs_path.split(b','))
logging.info(r"APRS packet content: '{0}'".format(packet))
# fn = os.path.join(config.USB_DIR, 'aprs.wav')
#TODO
fn = '/home/pi/aprs.wav'
logging.info('Now generating file %s for APRS packet.' % fn)
audio = afsk.encode(packet.unparse())
with open(fn, 'wb') as f:
audiogen.sampler.write_wav(f, audio)
# TODO: It would be better to play the APRS directly from memory,
# but setting up PyAudio on Raspbian did not work.
# So we take the USB stick instead of the SDCARD in order to
# minimize wear-off on the latter.
# The downside is that failure of the USB stick will break
# APRS completely.
if not os.path.exists(fn):
logging.error('Error: Problem generating APRS wav file.')
return False
logging.info('Sending APRS packet from %s via %s [%f MHz]' %
(ssid, aprs_path, frequency))
# When converting APRS string to audio using Bell 202, mind the
# pre-emphasis problems, see pre-emphasis settings, see also
# http://www.febo.com/packet/layer-one/transmit.html
# but this is already done:
# transceiver.set_filters(pre_emphasis=config.PRE_EMPHASIS)
# TODO: Think about software-based volume / modulation control
# maybe using ALSA via Python wrapper, see e.g.
# http://larsimmisch.github.io/pyalsaaudio/pyalsaaudio.html#alsa-and-python
# Also see
# http://www.forum-raspberrypi.de/Thread-suche-python-befehl-fuer-den-alsa-amixer
attempts = 0
while attempts < 3:
try:
transceiver = dra818.DRA818(
uart=config.SERIAL_PORT_TRANSCEIVER,
ptt_pin=config.DRA818_PTT,
power_down_pin=config.DRA818_PD,
rf_power_level_pin=config.DRA818_HL,
frequency=frequency,
squelch_level=config.SQUELCH)
break
except dra818.DRA818_Error:
attempts += 1
logging.warning(
'Warning: Problem setting up transceiver, retrying.')
attempts = 0
while attempts < 3:
status = transceiver.transmit_audio_file(frequency, [fn],
full_power=full_power)
if status:
break
else:
attempts += 1
try:
os.remove(fn)
except OSError:
pass
except Exception as msg:
logging.exception(msg)
finally:
transceiver.stop_transmitter()
return status
def main(arguments=None):
parser = argparse.ArgumentParser(description='')
parser.add_argument(
'-c',
'--callsign',
required=True,
help='Your ham callsign. REQUIRED.'
)
parser.add_argument(
'info',
metavar='INFO',
help='APRS message body'
)
parser.add_argument(
'--destination',
default=b'APRS',
help='AX.25 destination address. See http://www.aprs.org/aprs11/tocalls.txt'
)
parser.add_argument(
'-d',
'--digipeaters',
'--path',
default=b'WIDE1-1,WIDE2-1',
help='Digipeater path to use. "New Paradigm" recommendations are "WIDE1-1,WIDE2-1" for mobile and "WIDE2-1" for fixed stations. Defaults to "WIDE1-1,WIDE2-1."'
)
parser.add_argument(
'-o',
'--output',
default=None,
help='Write audio to wav file. Use \'-\' for stdout.'
)
parser.add_argument(
'-v',
'--verbose',
action='count',
help='Print more debugging output.'
)
args = parser.parse_args(args=arguments)
if args.verbose == 0:
logging.basicConfig(level=logging.INFO)
elif args.verbose >=1:
logging.basicConfig(level=logging.DEBUG)
packet = UI(
destination=args.destination,
source=args.callsign,
info=args.info,
digipeaters=args.digipeaters.split(b','),
)
logger.info(r"Sending packet: '{0}'".format(packet))
logger.debug(r"Packet bits:\n{0!r}".format(packet.unparse()))
audio = afsk.encode(packet.unparse())
if args.output == '-':
audiogen.sampler.write_wav(sys.stdout, audio)
elif args.output is not None:
with open(args.output, 'wb') as f:
audiogen.sampler.write_wav(f, audio)
else:
audiogen.sampler.play(audio, blocking=True)
# test_send.py
# sends a test packet
#--------------------------------------------------------------------------
#
# --------------------------------------------------------------------------
# Imports
import afsk
import packet
import audiogen
import time
# --------------------------------------------------------------------------
dest = b"QSAT"
callsign = b"KN6EVU"
digi = b""
for i in range(5):
info = b"Testing packet: Sending packet %b" % (str(i).encode())
print(("Dest: %s | Source: %s | Digis: %s | %s |" %
(dest.decode(), callsign.decode(), digi.decode(), info.decode())))
pack_data = packet.gen_packet(callsign, dest, digi, info)
audio = afsk.encode(pack_data.unparse())
audiogen.play(audio, blocking=True)
time.sleep(.5)