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Web API: NFM scanner Python script example (4)

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f4exb 2018-03-20 08:23:52 +01:00
parent 0e669cf56a
commit 3f4fc02065
1 changed files with 30 additions and 4 deletions
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34
swagger/sdrangel/examples/nfm_scanner.py
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@ -1,5 +1,15 @@
#!/usr/bin/env python #!/usr/bin/env python
"""
SDRangel REST API client script
Simple scanner for NFM channels. Builds an array of equally spaced channels. Moves device center frequency
so that adjacent parts of the spectrum are scanned by the array of channels. Stops when any of the channels
is active. Resumes when none of the channels is active.
Uses /sdrangel/deviceset/{deviceSetIndex}/channels/report API to get channel information (since v3.13.1)
"""
import requests, json, traceback, sys import requests, json, traceback, sys
from optparse import OptionParser from optparse import OptionParser
import time import time
@ -53,12 +63,23 @@ def getInputOptions():
parser.add_option("--sq", dest="squelch_db", help="Squelsch threshold in dB", metavar="DECIBEL", type="float", default=-50.0) parser.add_option("--sq", dest="squelch_db", help="Squelsch threshold in dB", metavar="DECIBEL", type="float", default=-50.0)
parser.add_option("--sq-gate", dest="squelch_gate", help="Squelsch gate in ms", metavar="MILLISECONDS", type="int", default=50) parser.add_option("--sq-gate", dest="squelch_gate", help="Squelsch gate in ms", metavar="MILLISECONDS", type="int", default=50)
parser.add_option("--re-run", dest="rerun", help="re run with given parameters without setting up device and channels", metavar="BOOLEAN", action="store_true", default=False) parser.add_option("--re-run", dest="rerun", help="re run with given parameters without setting up device and channels", metavar="BOOLEAN", action="store_true", default=False)
parser.add_option("-x", "--excl-list", dest="excl_fstr", help="frequencies (in Hz) exclusion comma separated list", metavar="LIST", type="string")
(options, args) = parser.parse_args() (options, args) = parser.parse_args()
if (options.address == None): if (options.address == None):
options.address = "127.0.0.1:8091" options.address = "127.0.0.1:8091"
if options.excl_fstr is not None:
excl_flist_str = options.excl_fstr.split(',')
try:
options.excl_flist = list(map(int, excl_flist_str))
except ValueError:
print("Invalid exclusion frequencies list: %s" % options.excl_fstr)
options.excl_flist = []
else:
options.excl_flist = []
return options return options
# ====================================================================== # ======================================================================
@ -104,6 +125,7 @@ def setupDevice(scan_control, options):
if r is None: if r is None:
exit(-1) exit(-1)
# ======================================================================
def changeDeviceFrequency(fc, options): def changeDeviceFrequency(fc, options):
settings = callAPI(deviceset_url + "/device/settings", "GET", None, None, "Get device settings") settings = callAPI(deviceset_url + "/device/settings", "GET", None, None, "Get device settings")
if settings is None: if settings is None:
@ -146,7 +168,7 @@ def setupChannels(scan_control, options):
i += 1 i += 1
# ====================================================================== # ======================================================================
def checkScanning(): def checkScanning(fc, options):
reports = callAPI(deviceset_url + "/channels/report", "GET", None, None, "Get channels report") reports = callAPI(deviceset_url + "/channels/report", "GET", None, None, "Get channels report")
if reports is None: if reports is None:
exit(-1) exit(-1)
@ -155,7 +177,10 @@ def checkScanning():
if "report" in channel: if "report" in channel:
if "NFMDemodReport" in channel["report"]: if "NFMDemodReport" in channel["report"]:
if channel["report"]["NFMDemodReport"]["squelch"] == 1: if channel["report"]["NFMDemodReport"]["squelch"] == 1:
return False # stop scanning f_channel = channel["deltaFrequency"]+fc
if f_channel not in options.excl_flist:
print("Stopped at %d Hz" % f_channel)
return False # stop scanning
return True # continue scanning return True # continue scanning
# ====================================================================== # ======================================================================
@ -204,13 +229,14 @@ def main():
exit(1) exit(1)
freqs = [] freqs = []
nb_steps = 1 nb_steps = 0
fc = scan_control.device_start_freq fc = scan_control.device_start_freq
while fc <= scan_control.device_stop_freq: while fc <= scan_control.device_stop_freq:
freqs += [x+fc for x in scan_control.channel_shifts] freqs += [x+fc for x in scan_control.channel_shifts]
fc += scan_control.device_step_freq fc += scan_control.device_step_freq
nb_steps += 1 nb_steps += 1
print("Scanned frequencies: %s" % freqs) print("Scanned frequencies: %s" % freqs)
print("Skipped frequencies: %s" % options.excl_flist)
print("In %d steps" % nb_steps) print("In %d steps" % nb_steps)
if options.mock: # Stop there if we are just mocking (no API access) if options.mock: # Stop there if we are just mocking (no API access)
@ -255,7 +281,7 @@ def main():
try: try:
while True: while True:
time.sleep(options.settling_time) time.sleep(options.settling_time)
if checkScanning(): # shall we move on ? if checkScanning(fc, options): # shall we move on ?
fc += scan_control.device_step_freq fc += scan_control.device_step_freq
if fc > scan_control.device_stop_freq: if fc > scan_control.device_stop_freq:
fc = scan_control.device_start_freq fc = scan_control.device_start_freq