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5add80f6 JS |
1 | #!/usr/bin/env python |
2 | ||
c09ca11b UH |
3 | ## |
4 | ## This file is part of the sigrok-meter project. | |
5 | ## | |
6 | ## Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de> | |
73f2129a | 7 | ## Copyright (C) 2014 Jens Steinhauser <jens.steinhauser@gmail.com> |
c09ca11b UH |
8 | ## |
9 | ## This program is free software; you can redistribute it and/or modify | |
10 | ## it under the terms of the GNU General Public License as published by | |
11 | ## the Free Software Foundation; either version 2 of the License, or | |
12 | ## (at your option) any later version. | |
13 | ## | |
14 | ## This program is distributed in the hope that it will be useful, | |
15 | ## but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | ## GNU General Public License for more details. | |
18 | ## | |
19 | ## You should have received a copy of the GNU General Public License | |
20 | ## along with this program; if not, write to the Free Software | |
21 | ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
22 | ## | |
23 | ||
782f5926 | 24 | import argparse |
73f2129a JS |
25 | import datetime |
26 | import os.path | |
27 | import PyQt4.QtCore as QtCore | |
28 | import PyQt4.QtGui as QtGui | |
f94bb73f | 29 | import re |
efdef4fa | 30 | import sigrok.core as sr |
782f5926 | 31 | import sys |
f94bb73f | 32 | import textwrap |
13e332b7 | 33 | |
f94bb73f | 34 | default_drivers = [('demo', {'analog_channels': 1})] |
782f5926 JS |
35 | default_loglevel = sr.LogLevel.WARN |
36 | ||
73f2129a JS |
37 | class SamplingThread(QtCore.QObject): |
38 | '''A class that handles the reception of sigrok packets in the background.''' | |
39 | ||
40 | class Worker(QtCore.QObject): | |
41 | '''Helper class that does the actual work in another thread.''' | |
42 | ||
43 | '''Signal emitted when new data arrived.''' | |
50523e84 | 44 | measured = QtCore.pyqtSignal(object) |
73f2129a JS |
45 | |
46 | def __init__(self, drivers, loglevel): | |
47 | super(self.__class__, self).__init__() | |
48 | ||
49 | self.context = sr.Context_create() | |
50 | self.context.log_level = loglevel | |
51 | ||
52 | self.sr_pkg_version = self.context.package_version | |
53 | self.sr_lib_version = self.context.lib_version | |
54 | ||
55 | self.devices = [] | |
56 | for name, options in drivers: | |
57 | try: | |
58 | dr = self.context.drivers[name] | |
59 | self.devices.append(dr.scan(**options)[0]) | |
60 | except: | |
61 | print('error getting device for driver "{}", skipping'.format(name)) | |
62 | ||
63 | if not self.devices: | |
64 | print('no devices found') | |
65 | ||
66 | def start_sampling(self): | |
67 | self.session = self.context.create_session() | |
68 | for dev in self.devices: | |
69 | self.session.add_device(dev) | |
70 | dev.open() | |
71 | self.session.add_datafeed_callback(self.callback) | |
72 | self.session.start() | |
73 | self.session.run() | |
74 | ||
75 | def stop_sampling(self): | |
76 | self.session.stop() | |
77 | ||
78 | def callback(self, device, packet): | |
79 | if packet.type == sr.PacketType.ANALOG: | |
50523e84 | 80 | dev = '{} {}'.format(device.vendor, device.model) |
73f2129a | 81 | |
50523e84 JS |
82 | # only send the most recent value |
83 | mag = packet.payload.data[0][-1] | |
73f2129a | 84 | |
50523e84 JS |
85 | self.measured.emit((dev, mag, packet.payload.unit, |
86 | packet.payload.mq_flags)) | |
73f2129a JS |
87 | |
88 | # wait a short time so that in any case we don't flood the GUI | |
89 | # with new data (for example if the demo device is used) | |
90 | self.thread().msleep(100) | |
91 | ||
92 | # signal used to start the worker across threads | |
93 | _start_signal = QtCore.pyqtSignal() | |
94 | ||
95 | def __init__(self, drivers, loglevel): | |
96 | super(self.__class__, self).__init__() | |
97 | ||
98 | self.worker = self.Worker(drivers, loglevel) | |
99 | self.thread = QtCore.QThread() | |
100 | self.worker.moveToThread(self.thread) | |
101 | ||
102 | self._start_signal.connect(self.worker.start_sampling) | |
103 | ||
104 | self.measured = self.worker.measured | |
105 | ||
106 | self.thread.start() | |
107 | ||
108 | def start(self): | |
109 | '''Starts sampling''' | |
110 | self._start_signal.emit() | |
111 | ||
112 | def stop(self): | |
113 | '''Stops sampling and the background thread.''' | |
114 | self.worker.stop_sampling() | |
115 | self.thread.quit() | |
116 | # the timeout is needed when the demo device is used, because it | |
117 | # produces so much outstanding data that quitting takes a long time | |
118 | self.thread.wait(500) | |
119 | ||
120 | def sr_pkg_version(self): | |
121 | '''Returns the version number of the libsigrok package.''' | |
122 | return self.worker.sr_pkg_version | |
123 | ||
124 | def sr_lib_version(self): | |
125 | '''Returns the version number fo the libsigrok library.''' | |
126 | return self.worker.sr_lib_version | |
127 | ||
128 | class SigrokMeter(QtGui.QMainWindow): | |
129 | '''The main window of the application.''' | |
130 | ||
131 | def __init__(self, thread): | |
132 | super(SigrokMeter, self).__init__() | |
133 | self.setup_ui() | |
134 | ||
50523e84 JS |
135 | self.inf = float('inf') |
136 | ||
73f2129a JS |
137 | self.thread = thread |
138 | self.thread.measured.connect(self.update, QtCore.Qt.QueuedConnection) | |
139 | self.thread.start() | |
140 | ||
141 | def setup_ui(self): | |
142 | self.setWindowTitle('sigrok-meter') | |
143 | self.setMinimumHeight(130) | |
144 | self.setMinimumWidth(260) | |
145 | ||
146 | p = os.path.abspath(os.path.dirname(__file__)) | |
147 | p = os.path.join(p, 'sigrok-logo-notext.png') | |
148 | self.setWindowIcon(QtGui.QIcon(p)) | |
149 | ||
150 | actionQuit = QtGui.QAction(self) | |
151 | actionQuit.setText('&Quit') | |
152 | actionQuit.setIcon(QtGui.QIcon.fromTheme('application-exit')) | |
153 | actionQuit.setShortcut('Ctrl+Q') | |
154 | actionQuit.triggered.connect(self.close) | |
155 | ||
156 | actionAbout = QtGui.QAction(self) | |
157 | actionAbout.setText('&About') | |
158 | actionAbout.setIcon(QtGui.QIcon.fromTheme('help-about')) | |
159 | actionAbout.triggered.connect(self.show_about) | |
160 | ||
161 | menubar = self.menuBar() | |
162 | menuFile = menubar.addMenu('&File') | |
163 | menuFile.addAction(actionQuit) | |
164 | menuHelp = menubar.addMenu('&Help') | |
165 | menuHelp.addAction(actionAbout) | |
166 | ||
167 | self.lblValue = QtGui.QLabel('waiting for data...') | |
168 | self.lblValue.setAlignment(QtCore.Qt.AlignCenter) | |
169 | font = self.lblValue.font() | |
170 | font.setPointSize(font.pointSize() * 1.7) | |
171 | font.setBold(True) | |
172 | self.lblValue.setFont(font) | |
173 | self.setCentralWidget(self.lblValue) | |
174 | self.centralWidget().setContentsMargins(0, 0, 0, 0) | |
175 | ||
176 | self.lblDevName = QtGui.QLabel() | |
177 | self.lblDevName.setToolTip('Name of used measurement device.') | |
178 | self.statusBar().insertWidget(0, self.lblDevName, 10) | |
179 | self.lblTime = QtGui.QLabel() | |
180 | self.lblTime.setToolTip('Time of the last measurement.') | |
181 | self.statusBar().insertWidget(1, self.lblTime) | |
182 | ||
183 | self.statusBar().setSizeGripEnabled(False) | |
184 | ||
185 | def show_about(self): | |
186 | text = textwrap.dedent('''\ | |
187 | <div align="center"> | |
188 | <b>sigrok-meter</b><br/> | |
189 | 0.1.0<br/> | |
190 | Using libsigrok {} (lib version {}).<br/> | |
191 | <a href='http://www.sigrok.org'> | |
192 | http://www.sigrok.org</a><br/> | |
193 | <br/> | |
194 | This program comes with ABSOLUTELY NO WARRANTY;<br/> | |
195 | for details visit | |
196 | <a href='http://www.gnu.org/licenses/gpl.html'> | |
197 | http://www.gnu.org/licenses/gpl.html</a> | |
198 | </div> | |
199 | '''.format(self.thread.sr_pkg_version(), self.thread.sr_lib_version())) | |
200 | ||
201 | QtGui.QMessageBox.about(self, 'About sigrok-meter', text) | |
202 | ||
50523e84 JS |
203 | def format_unit(self, u): |
204 | units = { | |
205 | sr.Unit.VOLT: 'V', | |
206 | sr.Unit.AMPERE: 'A', | |
207 | sr.Unit.OHM: u'\u03A9', | |
208 | sr.Unit.FARAD: 'F', | |
209 | sr.Unit.KELVIN: 'K', | |
210 | sr.Unit.CELSIUS: u'\u00B0C', | |
211 | sr.Unit.FAHRENHEIT: u'\u00B0F', | |
212 | sr.Unit.HERTZ: 'Hz', | |
213 | sr.Unit.PERCENTAGE: '%', | |
214 | # sr.Unit.BOOLEAN | |
215 | sr.Unit.SECOND: 's', | |
216 | sr.Unit.SIEMENS: 'S', | |
217 | sr.Unit.DECIBEL_MW: 'dBu', | |
218 | sr.Unit.DECIBEL_VOLT: 'dBV', | |
219 | # sr.Unit.UNITLESS | |
220 | sr.Unit.DECIBEL_SPL: 'dB', | |
221 | # sr.Unit.CONCENTRATION | |
222 | sr.Unit.REVOLUTIONS_PER_MINUTE: 'rpm', | |
223 | sr.Unit.VOLT_AMPERE: 'VA', | |
224 | sr.Unit.WATT: 'W', | |
225 | sr.Unit.WATT_HOUR: 'Wh', | |
226 | sr.Unit.METER_SECOND: 'm/s', | |
227 | sr.Unit.HECTOPASCAL: 'hPa', | |
228 | sr.Unit.HUMIDITY_293K: '%rF', | |
229 | sr.Unit.DEGREE: u'\u00B0', | |
230 | sr.Unit.HENRY: 'H' | |
231 | } | |
232 | ||
233 | return units.get(u, '') | |
234 | ||
235 | def format_mqflags(self, mqflags): | |
236 | if sr.QuantityFlag.AC in mqflags: | |
237 | s = 'AC' | |
238 | elif sr.QuantityFlag.DC in mqflags: | |
239 | s = 'DC' | |
240 | else: | |
241 | s = '' | |
242 | ||
243 | return s | |
244 | ||
245 | def format_mag(self, mag): | |
246 | if mag == self.inf: | |
247 | return u'\u221E' | |
248 | return '{:f}'.format(mag) | |
249 | ||
250 | def update(self, data): | |
73f2129a JS |
251 | '''Updates the labels with new measurement values.''' |
252 | ||
50523e84 JS |
253 | device, mag, unit, mqflags = data |
254 | ||
255 | unit_str = self.format_unit(unit) | |
256 | mqflags_str = self.format_mqflags(mqflags) | |
257 | mag_str = self.format_mag(mag) | |
258 | value = ' '.join([mag_str, unit_str, mqflags_str]) | |
259 | ||
73f2129a JS |
260 | n = datetime.datetime.now().time() |
261 | now = '{:02}:{:02}:{:02}.{:03}'.format( | |
262 | n.hour, n.minute, n.second, n.microsecond / 1000) | |
263 | ||
264 | self.lblValue.setText(value) | |
265 | self.lblDevName.setText(device) | |
266 | self.lblTime.setText(now) | |
2f5ef701 | 267 | |
f94bb73f | 268 | def parse_cli(): |
782f5926 | 269 | parser = argparse.ArgumentParser( |
f94bb73f JS |
270 | description='Simple sigrok GUI for multimeters and dataloggers.', |
271 | epilog=textwrap.dedent('''\ | |
272 | The DRIVER string is the same as for sigrok-cli(1). | |
273 | ||
274 | examples: | |
275 | ||
276 | %(prog)s --driver tecpel-dmm-8061-ser:conn=/dev/ttyUSB0 | |
277 | ||
278 | %(prog)s --driver uni-t-ut61e:conn=1a86.e008 | |
279 | '''), | |
280 | formatter_class=argparse.RawDescriptionHelpFormatter) | |
281 | ||
282 | parser.add_argument('-d', '--driver', | |
283 | action='append', | |
284 | help='The driver to use') | |
782f5926 JS |
285 | parser.add_argument('-l', '--loglevel', |
286 | type=int, | |
287 | help='Set loglevel (5 is most verbose)') | |
288 | args = parser.parse_args() | |
289 | ||
f94bb73f JS |
290 | result = { |
291 | 'drivers': default_drivers, | |
292 | 'loglevel': default_loglevel | |
293 | } | |
294 | ||
295 | if args.driver: | |
296 | result['drivers'] = [] | |
297 | for d in args.driver: | |
298 | m = re.match('(?P<name>[^:]+)(?P<opts>(:[^:=]+=[^:=]+)*)', d) | |
299 | if not m: | |
300 | sys.exit('error parsing option "{}"'.format(d)) | |
301 | ||
302 | opts = m.group('opts').split(':')[1:] | |
303 | opts = [tuple(kv.split('=')) for kv in opts] | |
304 | opts = dict(opts) | |
305 | ||
306 | result['drivers'].append((m.group('name'), opts)) | |
307 | ||
782f5926 JS |
308 | if args.loglevel != None: |
309 | try: | |
f94bb73f | 310 | result['loglevel'] = sr.LogLevel.get(args.loglevel) |
782f5926 JS |
311 | except: |
312 | sys.exit('error: invalid log level') | |
313 | ||
f94bb73f JS |
314 | return result |
315 | ||
316 | if __name__ == '__main__': | |
317 | args = parse_cli() | |
c09ca11b | 318 | |
73f2129a JS |
319 | thread = SamplingThread(args['drivers'], args['loglevel']) |
320 | ||
321 | app = QtGui.QApplication([]) | |
322 | s = SigrokMeter(thread) | |
323 | s.show() | |
324 | ||
325 | r = app.exec_() | |
326 | thread.stop() | |
327 | sys.exit(r) |