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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
# -*- coding: utf-8 -*-
import logging
import pytest
from pyvisa.errors import VisaIOError
def assert_instrument_response(device, query, data):
response = device.query(query)
assert response == data, "%s, %r == %r" % (device.resource_name, query, data)
def test_list(resource_manager):
assert set(resource_manager.list_resources("?*")) == {
"ASRL1::INSTR",
"ASRL2::INSTR",
"ASRL3::INSTR",
"ASRL4::INSTR",
"TCPIP0::localhost::inst0::INSTR",
"TCPIP0::localhost::10001::SOCKET",
"TCPIP0::localhost:2222::inst0::INSTR",
"TCPIP0::localhost:3333::inst0::INSTR",
"TCPIP0::localhost:4444::inst0::INSTR",
"USB0::0x1111::0x2222::0x1234::0::INSTR",
"USB0::0x1111::0x2222::0x2468::0::INSTR",
"USB0::0x1111::0x2222::0x3692::0::INSTR",
"USB0::0x1111::0x2222::0x4444::0::INSTR",
"USB0::0x1111::0x2222::0x4445::0::RAW",
"GPIB0::4::INSTR",
"GPIB0::8::INSTR",
"GPIB0::9::INSTR",
"GPIB0::10::INSTR",
}
@pytest.mark.parametrize(
"resource",
[
"ASRL1::INSTR",
"GPIB0::8::INSTR",
"TCPIP0::localhost::inst0::INSTR",
"TCPIP0::localhost::10001::SOCKET",
"USB0::0x1111::0x2222::0x1234::0::INSTR",
"USB0::0x1111::0x2222::0x4445::0::RAW",
],
)
def test_instruments(resource, resource_manager):
inst = resource_manager.open_resource(
resource,
read_termination="\n",
write_termination="\r\n" if resource.startswith("ASRL") else "\n",
)
assert_instrument_response(inst, "?IDN", "LSG Serial #1234")
assert_instrument_response(inst, "?FREQ", "100.00")
assert_instrument_response(inst, "!FREQ 10.3", "OK")
assert_instrument_response(inst, "?FREQ", "10.30")
assert_instrument_response(inst, "?AMP", "1.00")
assert_instrument_response(inst, "!AMP 3.8", "OK")
assert_instrument_response(inst, "?AMP", "3.80")
assert_instrument_response(inst, "?OFF", "0.00")
assert_instrument_response(inst, "!OFF 1.2", "OK")
assert_instrument_response(inst, "?OFF", "1.20")
assert_instrument_response(inst, "?OUT", "0")
assert_instrument_response(inst, "!OUT 1", "OK")
assert_instrument_response(inst, "?OUT", "1")
assert_instrument_response(inst, "?WVF", "0")
assert_instrument_response(inst, "!WVF 1", "OK")
assert_instrument_response(inst, "?WVF", "1")
assert_instrument_response(inst, "!CAL", "OK")
# Errors
assert_instrument_response(inst, "!WVF 23", "ERROR")
assert_instrument_response(inst, "!AMP -1.0", "ERROR")
assert_instrument_response(inst, "!AMP 11.0", "ERROR")
assert_instrument_response(inst, "!FREQ 0.0", "FREQ_ERROR")
assert_instrument_response(inst, "BOGUS_COMMAND", "ERROR")
inst.close()
@pytest.mark.parametrize(
"resource",
[
"ASRL3::INSTR",
"GPIB0::10::INSTR",
"TCPIP0::localhost:3333::inst0::INSTR",
"USB0::0x1111::0x2222::0x3692::0::INSTR",
],
)
def test_instruments_on_invalid_command(resource, resource_manager):
inst = resource_manager.open_resource(
resource,
read_termination="\n",
write_termination="\r\n" if resource.startswith("ASRL") else "\n",
)
response = inst.query("FAKE_COMMAND")
assert response == "INVALID_COMMAND", "invalid command test - response"
status_reg = inst.query("*ESR?")
assert int(status_reg) == 32, "invalid command test - status"
@pytest.mark.parametrize(
"resource",
[
"ASRL2::INSTR",
"GPIB0::9::INSTR",
"TCPIP0::localhost:2222::inst0::INSTR",
"USB0::0x1111::0x2222::0x2468::0::INSTR",
],
)
def test_instrument_on_invalid_values(resource, resource_manager):
inst = resource_manager.open_resource(
resource,
read_termination="\n",
write_termination="\r\n" if resource.startswith("ASRL") else "\n",
)
inst.write("FAKE_COMMAND")
status_reg = inst.query("*ESR?")
assert int(status_reg) == 32, "invalid test command"
inst.write(":VOLT:IMM:AMPL 2.00")
status_reg = inst.query("*ESR?")
assert int(status_reg) == 0
inst.write(":VOLT:IMM:AMPL 0.5")
status_reg = inst.query("*ESR?")
assert int(status_reg) == 32, "invalid range test - <min"
inst.write(":VOLT:IMM:AMPL 6.5")
status_reg = inst.query("*ESR?")
assert int(status_reg) == 32, "invalid range test - >max"
@pytest.mark.parametrize(
"resource",
[
"ASRL3::INSTR",
"GPIB0::10::INSTR",
"TCPIP0::localhost:3333::inst0::INSTR",
"USB0::0x1111::0x2222::0x3692::0::INSTR",
],
)
def test_instruments_with_timeouts(resource, resource_manager):
inst = resource_manager.open_resource(resource, timeout=0.1)
with pytest.raises(VisaIOError):
inst.read()
@pytest.mark.parametrize(
"resource",
[
"ASRL4::INSTR",
"GPIB0::4::INSTR",
"TCPIP0::localhost:4444::inst0::INSTR",
"USB0::0x1111::0x2222::0x4444::0::INSTR",
],
)
def test_instrument_for_error_state(resource, resource_manager):
inst = resource_manager.open_resource(
resource,
read_termination="\n",
write_termination="\r\n" if resource.startswith("ASRL") else "\n",
)
assert_instrument_response(inst, ":SYST:ERR?", "0, No Error")
inst.write("FAKE COMMAND")
assert_instrument_response(inst, ":SYST:ERR?", "1, Command error")
inst.write(":VOLT:IMM:AMPL 0")
assert_instrument_response(inst, ":SYST:ERR?", "1, Command error")
def test_device_write_logging(caplog, resource_manager) -> None:
instr = resource_manager.open_resource(
"USB0::0x1111::0x2222::0x4444::0::INSTR",
read_termination="\n",
write_termination="\n",
)
with caplog.at_level(logging.DEBUG):
instr.write("*IDN?")
instr.read()
assert "input buffer: b'D'" not in caplog.text
assert r"input buffer: b'*IDN?\n'" in caplog.text
|
