1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
import os
from airspyhf import *
from ctypes import *
import time
import sys
import wave
import struct
print("Check airspyHF version")
p = airspyhf_lib_version_t()
print(libairspyhf.airspyhf_lib_version(byref(p)))
print(p.major_version)
print(p.minor_version)
print(p.revision)
print("Get list of devices if there is any")
ndev = libairspyhf.airspyhf_list_devices(None,0)
print("Found %d devices"%(ndev))
for devi in range(0,ndev):
serial = c_uint64(0)
libairspyhf.airspyhf_list_devices(byref(serial),devi+1)
print("Device %d: Serial number %s"%(int(devi),hex(serial.value) ))
print("try to open device")
dev_p = airspyhf_device_t_p(None)
ret = libairspyhf.airspyhf_open_sn(dev_p,0x3b52ab5dada12535)
print("open_sn: Returned %d"%(ret))
if (ret != 0):
print("airspyhf_open_sn returned != 0, error")
sys.exit()
print("List sample rates")
nsrates = c_uint32(0)
ret = libairspyhf.airspyhf_get_samplerates(dev_p,byref(nsrates),c_uint32(0))
print("ret %d"%ret)
print("sample rates %d"% nsrates.value)
supportet_samplerates = (c_uint32*4)(0)
ret = libairspyhf.airspyhf_get_samplerates(dev_p,supportet_samplerates,nsrates)
print("ret %d"%ret)
for i in range(0,nsrates.value):
print("Sample rates %d"% supportet_samplerates[i])
#try to get some samples
ret = libairspyhf.airspyhf_set_samplerate(dev_p, supportet_samplerates[3])
print(f"airspyhf_set_samplerate ret={ret}")
ret = libairspyhf.airspyhf_set_hf_agc(dev_p, 1)
print(f"airspyhf_set_hf_agc ret={ret}")
ret = libairspyhf.airspyhf_set_hf_agc_threshold(dev_p, 0)
print(f"airspyhf_set_hf_agc_threshold ret={ret}")
sample_count = 0
wave_file = wave.open("record.wav","w")
wave_file.setnchannels(2)
wave_file.setsampwidth(4)
wave_file.setframerate(supportet_samplerates[1])
def read_samples(transfer):
global sample_count
global wave_file
#print("Python call back")
t = transfer.contents
bytes_to_write = t.sample_count * 4 * 2
rx_buffer = t.samples
#print(f"{bytes_to_write} bytes receieved")
sample_count += t.sample_count
for i in range(0,t.sample_count):
d_re = t.samples[i].re
d_im = t.samples[i].im
data = struct.pack("<f",d_re) # FIX ?!
wave_file.writeframesraw(data)
data = struct.pack("<f", d_im) # FIX ?!
wave_file.writeframesraw(data)
#print("End call back")
return 0
read_samples_cb = airspyhf_sample_block_cb_fn(read_samples)
ret = libairspyhf.airspyhf_start(dev_p, airspyhf_sample_block_cb_fn(read_samples), None)
print(f"airspyhf_start ret={ret}")
#ret = airspyhf.libairspyhf.py_cb_wrapper(dev_p)
#print(f"airspyhf_start ret={ret}")
ret = libairspyhf.airspyhf_set_freq(dev_p, 3865000)
print(f"airspyhf_set_freq ret={ret}")
count = 0
try:
while (libairspyhf.airspyhf_is_streaming(dev_p)) and (count < 3):
print("Main loop")
time.sleep(1)
count += 1
except:
print("Error in main loop")
ret = libairspyhf.airspyhf_stop(dev_p)
print(f"airspyhf_stop ret={ret}")
#Not close for now
ret = libairspyhf.close(dev_p)
print("closed: Returned %d"%(ret))
print(f"Total samples received {sample_count}")
libairspyhf.py_test()
libairspyhf.py_test_cb(read_samples_cb)
wave_file.close()
print("All is ok")
|
