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limit bin size configuration to acceptable bounds

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This commit is contained in:
Michael Ossmann 2017-02-10 16:57:12 -07:00
parent bb6412be69
commit ab431554aa
1 changed files with 16 additions and 8 deletions
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24
qspectrumanalyzer/backend.py
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@ -270,18 +270,25 @@ class RtlPowerFftwThread(RtlPowerBaseThread):
class HackRFSweepThread(RtlPowerBaseThread):
"""Thread which runs hackrf_sweep process"""
def setup(self, start_freq, stop_freq, bin_size, interval=10.0, gain=-1,
ppm=0, crop=0, single_shot=False, device_index=0, sample_rate=2560000):
def setup(self, start_freq=0, stop_freq=6000, bin_size=1000,
interval=0.0, gain=0, ppm=0, crop=0, single_shot=False,
device_index=0, sample_rate=20000000):
"""Setup hackrf_sweep params"""
# theoretically we can support bins smaller than 40 kHz, but it is
# unlikely to result in acceptable performance
if bin_size < 40:
bin_size = 40
if bin_size > 5000:
bin_size = 5000
self.params = {
"start_freq": start_freq,
"stop_freq": stop_freq,
"start_freq": start_freq, # MHz
"stop_freq": stop_freq, # MHz
"hops": 0,
"device_index": 0,
"sample_rate": 20e6,
"bin_size": int(bin_size*1000),
"interval": 0,
"sample_rate": 20e6, # Msps
"bin_size": bin_size, # kHz
"interval": 0, # seconds
"gain": 0,
"ppm": 0,
"crop": 0,
@ -301,7 +308,8 @@ class HackRFSweepThread(RtlPowerBaseThread):
settings.value("rtl_power_executable", "hackrf_sweep"),
"-f", "{}:{}".format(int(self.params["start_freq"]),
int(self.params["stop_freq"])),
"-B", "-w", "{}".format(self.params["bin_size"]),
"-B",
"-w", "{}".format(int(self.params["bin_size"]*1000)),
]
if self.params["single_shot"]: