Add command line option for the driver.

[sigrok-meter.git] / sigrok-meter

diff --git a/sigrok-meter b/sigrok-meter
index e80b634035f01b77bb606fd575aa0c3ce1b07745..2c658356bff7eb5fa2b45480e906a25f54c7598b 100755 (executable)
--- a/sigrok-meter
+++ b/sigrok-meter
@@ -1,4 +1,5 @@
-#!/usr/bin/python3
+#!/usr/bin/env python
+
 ##
 ## This file is part of the sigrok-meter project.
 ##
@@ -19,25 +20,150 @@
 ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 ##
 
-from gi.repository import Gtk
+import argparse
+from multiprocessing import Process, Queue
+from gi.repository import Gtk, GObject
+import re
+import sigrok.core as sr
+import sys
+import textwrap
+
+default_drivers = [('demo', {'analog_channels': 1})]
+default_loglevel = sr.LogLevel.WARN
+
+def init_and_run(queue, drivers, loglevel):
+    def datafeed_in(device, packet):
+        if packet.type == sr.PacketType.ANALOG:
+            data = packet.payload.data
+            unit, unit_str = packet.payload.unit, ""
+            if unit == sr.Unit.VOLT:
+                unit_str = " V"
+            elif unit == sr.Unit.OHM:
+                unit_str = " Ohm"
+            elif unit == sr.Unit.AMPERE:
+                unit_str = " A"
+            mqflags, mqflags_str = packet.payload.mq_flags, ""
+            if sr.QuantityFlag.AC in mqflags:
+                mqflags_str = " AC"
+            elif sr.QuantityFlag.DC in mqflags:
+                mqflags_str = " DC"
+            for i in range(packet.payload.num_samples):
+                dev = "%s %s" % (device.vendor, device.model)
+                val = "%f%s%s" % (data[0][i], unit_str, mqflags_str)
+                queue.put((dev, val))
+
+    context = sr.Context_create()
+    context.log_level = loglevel
+
+    devices = []
+    for name, options in drivers:
+        try:
+            dr = context.drivers[name]
+            devices.append(dr.scan(**options)[0])
+        except:
+            print('error getting device for driver "{}", skipping'.format(name))
+
+    if not devices:
+        print('no devices found')
+        return
+
+    session = context.create_session()
+    for dev in devices:
+        session.add_device(dev)
+        dev.open()
+    session.add_datafeed_callback(datafeed_in)
+    session.start()
+    session.run()
+    session.stop()
 
 class SigrokMeter:
     def __init__(self):
         self.builder = Gtk.Builder()
         self.builder.add_from_file("sigrok-meter.glade")
         self.builder.connect_signals(self)
-        self.win = self.builder.get_object("main-window")
+        self.value_label = self.builder.get_object("value_label")
+        self.value_label2 = self.builder.get_object("value_label2")
+        self.win = self.builder.get_object("mainwindow")
         self.win.show_all()
+        self.queue = Queue()
+        GObject.timeout_add(100, self.update_label_if_needed)
+
+    def update_label_if_needed(self):
+        try:
+            t = self.queue.get_nowait()
+            l = self.value_label if t[0] != "Victor" else self.value_label2
+            l.set_text("%s: %s" % (t[0], t[1]))
+        except:
+            pass
+        GObject.timeout_add(100, self.update_label_if_needed)
 
-    def onDeleteWindow(self, *args):
+    def on_quit(self, *args):
         Gtk.main_quit(*args)
 
-    def on_imagemenuitemAbout_activate(self, action):
+    def on_about(self, action):
         about = self.builder.get_object("aboutdialog")
+        context = sr.Context_create()
+        sr_pkg = context.package_version
+        sr_lib = context.lib_version
+        s = "Using libsigrok %s (lib version %s)." % (sr_pkg, sr_lib)
+        about.set_comments(s)
         about.run()
         about.hide()
 
+def parse_cli():
+    parser = argparse.ArgumentParser(
+        description='Simple sigrok GUI for multimeters and dataloggers.',
+        epilog=textwrap.dedent('''\
+            The DRIVER string is the same as for sigrok-cli(1).
+
+            examples:
+
+              %(prog)s --driver tecpel-dmm-8061-ser:conn=/dev/ttyUSB0
+
+              %(prog)s --driver uni-t-ut61e:conn=1a86.e008
+        '''),
+        formatter_class=argparse.RawDescriptionHelpFormatter)
+
+    parser.add_argument('-d', '--driver',
+        action='append',
+        help='The driver to use')
+    parser.add_argument('-l', '--loglevel',
+        type=int,
+        help='Set loglevel (5 is most verbose)')
+    args = parser.parse_args()
+
+    result = {
+        'drivers': default_drivers,
+        'loglevel': default_loglevel
+    }
+
+    if args.driver:
+        result['drivers'] = []
+        for d in args.driver:
+            m = re.match('(?P<name>[^:]+)(?P<opts>(:[^:=]+=[^:=]+)*)', d)
+            if not m:
+                sys.exit('error parsing option "{}"'.format(d))
+
+            opts = m.group('opts').split(':')[1:]
+            opts = [tuple(kv.split('=')) for kv in opts]
+            opts = dict(opts)
+
+            result['drivers'].append((m.group('name'), opts))
+
+    if args.loglevel != None:
+        try:
+            result['loglevel'] = sr.LogLevel.get(args.loglevel)
+        except:
+            sys.exit('error: invalid log level')
+
+    return result
+
 if __name__ == '__main__':
-       SigrokMeter()
-       Gtk.main()
+    args = parse_cli()
+    s = SigrokMeter()
+    process = Process(target=init_and_run,
+            args=(s.queue, args['drivers'], args['loglevel']))
+    process.start()
+    Gtk.main()
+    process.terminate()