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
|
# utilities
from usrp_prims import *
def setup (which_board = 0):
if not usrp_load_standard_bits (which_board, False):
raise RuntimeError, "usrp_load_standard_bits"
dev = usrp_find_device (which_board)
if not dev:
raise RuntimeError, "usrp_find_device"
u = usrp_open_cmd_interface (dev)
if not u:
raise RuntimeError, "usrp_open_cmd_interface"
# FIXME setup high speed paths, Aux ADC Clock, ...
# usrp_9862_write (u, 0, 35, 0x1) # aux ADC clock = CLK/4
# usrp_9862_write (u, 1, 35, 0x1)
return u
def write_slot_oe (u, slot, value, mask):
assert 0 <= slot and slot < 4
return usrp_write_fpga_reg (u, slot + FR_OE_0,
((mask & 0xffff) << 16) | (value & 0xffff))
def write_slot_io (u, slot, value, mask):
assert 0 <= slot and slot < 4
return usrp_write_fpga_reg (u, slot + FR_IO_0,
((mask & 0xffff) << 16) | (value & 0xffff))
# ----------------------------------------------------------------
def ramp_aux_dac (u, which_codec, which_dac):
if not (which_codec == 0 or which_codec == 1):
raise AssertionError
if not (which_dac >= 0 and which_dac < 4):
raise AssertionError
try:
if which_dac == 3: # sigma delta output
sigma_delta_loop (u, which_codec)
else:
aux_dac_loop (u, which_codec, which_dac)
except KeyboardInterrupt:
return
def sigma_delta_loop (u, which_codec):
counter = 0
while True:
usrp_9862_write (u, which_codec, 43, counter >> 4)
usrp_9862_write (u, which_codec, 42, (counter & 0xf) << 4)
# counter += 1 FIXME
counter += 4
if counter > 0xfff:
counter = 0
def aux_dac_loop (u, which_codec, which_dac):
reg = 36 + which_dac # Aux DAC A,B,C
counter = 0
while True:
usrp_9862_write (u, which_codec, reg, counter)
counter += 1
if counter > 0xff:
counter = 0
def read_aux_adc_loop (u, slot, which_adc):
while True:
v = usrp_read_aux_adc (u, slot, which_adc)
print "%3d %5.3f" % (v, v * 3.3 / 1024)
def ramp_io_port (u, slot):
counter = 0
try:
while True:
write_slot_io (u, slot, counter, 0xffff)
counter += 1
if counter > 0xffff:
counter = 0
except KeyboardInterrupt:
return
def walk_io_port (u, slot):
bit = 1
try:
while True:
write_slot_io (u, slot, bit, 0xffff)
bit = (bit << 1) & 0xffff
if bit == 0:
bit = 1
except KeyboardInterrupt:
return
|
