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Allow manual setting of specific gains in hackrf_sweep backend

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This commit is contained in:
Michal Krenek (Mikos) 2017-04-03 17:50:38 +02:00
parent edf8ae17e2
commit 1c9e7681b8
1 changed files with 8 additions and 6 deletions
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10
qspectrumanalyzer/backends/hackrf_sweep.py
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@ -56,12 +56,10 @@ class PowerThread(BasePowerThread):
stop_freq = start_freq + total_bandwidth
# distribute gain between two analog gain stages
if gain < 0:
gain = 0
if gain > 102:
gain = 102
lna_gain = 8 * (gain // 18)
vga_gain = 2 * ((gain - lna_gain) // 2)
lna_gain = 8 * (gain // 18) if gain >= 0 else 0
vga_gain = 2 * ((gain - lna_gain) // 2) if gain >= 0 else 0
self.params = {
"start_freq": start_freq, # MHz
@ -97,6 +95,10 @@ class PowerThread(BasePowerThread):
int(self.params["stop_freq"] - self.lnb_lo / 1e6)),
"-B",
"-w", "{}".format(int(self.params["bin_size"] * 1000)),
])
if self.params["gain"] >= 0:
cmdline.extend([
"-l", "{}".format(int(self.params["lna_gain"])),
"-g", "{}".format(int(self.params["vga_gain"])),
])