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Web API: NFM scanner Python script example (4)

This commit is contained in:
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
"""
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
from optparse import OptionParser
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-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("-x", "--excl-list", dest="excl_fstr", help="frequencies (in Hz) exclusion comma separated list", metavar="LIST", type="string")
(options, args) = parser.parse_args()
if (options.address == None):
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
# ======================================================================
@ -104,6 +125,7 @@ def setupDevice(scan_control, options):
if r is None:
exit(-1)
# ======================================================================
def changeDeviceFrequency(fc, options):
settings = callAPI(deviceset_url + "/device/settings", "GET", None, None, "Get device settings")
if settings is None:
@ -146,7 +168,7 @@ def setupChannels(scan_control, options):
i += 1
# ======================================================================
def checkScanning():
def checkScanning(fc, options):
reports = callAPI(deviceset_url + "/channels/report", "GET", None, None, "Get channels report")
if reports is None:
exit(-1)
@ -155,7 +177,10 @@ def checkScanning():
if "report" in channel:
if "NFMDemodReport" in channel["report"]:
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
# ======================================================================
@ -204,13 +229,14 @@ def main():
exit(1)
freqs = []
nb_steps = 1
nb_steps = 0
fc = scan_control.device_start_freq
while fc <= scan_control.device_stop_freq:
freqs += [x+fc for x in scan_control.channel_shifts]
fc += scan_control.device_step_freq
nb_steps += 1
print("Scanned frequencies: %s" % freqs)
print("Skipped frequencies: %s" % options.excl_flist)
print("In %d steps" % nb_steps)
if options.mock: # Stop there if we are just mocking (no API access)
@ -255,7 +281,7 @@ def main():
try:
while True:
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
if fc > scan_control.device_stop_freq:
fc = scan_control.device_start_freq