Add command line option for the driver.

[sigrok-meter.git] / sigrok-meter

diff --git a/sigrok-meter b/sigrok-meter
index 988412e6abf1d4831a5aa1c24f3718491ae3a3c9..2c658356bff7eb5fa2b45480e906a25f54c7598b 100755 (executable)
--- a/sigrok-meter
+++ b/sigrok-meter
@@ -20,46 +20,58 @@
 ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 ##
 
+import argparse
 from multiprocessing import Process, Queue
 from gi.repository import Gtk, GObject
-from sigrok.core import *
-from sigrok.core import lowlevel as ll
+import re
+import sigrok.core as sr
+import sys
+import textwrap
 
-def init_and_run(queue):
+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 is PacketType.ANALOG:
+        if packet.type == sr.PacketType.ANALOG:
             data = packet.payload.data
             unit, unit_str = packet.payload.unit, ""
-            if unit is Unit.VOLT:
+            if unit == sr.Unit.VOLT:
                 unit_str = " V"
-            elif unit is Unit.OHM:
+            elif unit == sr.Unit.OHM:
                 unit_str = " Ohm"
-            elif unit is Unit.AMPERE:
+            elif unit == sr.Unit.AMPERE:
                 unit_str = " A"
-            mqflags, mqflags_str = packet.payload.mqflags, ""
-            if QuantityFlag.AC in mqflags:
+            mqflags, mqflags_str = packet.payload.mq_flags, ""
+            if sr.QuantityFlag.AC in mqflags:
                 mqflags_str = " AC"
-            elif QuantityFlag.DC in mqflags:
+            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[i], unit_str, mqflags_str)
+                val = "%f%s%s" % (data[0][i], unit_str, mqflags_str)
                 queue.put((dev, val))
 
-    # log = Log()
-    # log.level = LogLevel.SPEW
-    context = Context()
-    drivers_to_use = ['tecpel-dmm-8061-ser']
-    drivers = [context.drivers[d] for d in drivers_to_use]
-    devices = [d.scan(conn="/dev/ttyUSB0")[0] for d in drivers]
-    # devices = [d.scan()[0] for d in drivers]
-    # for dev in devices:
-    #     dev.limit_samples = 1000
-    session = Session(context)
+    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.open_device(dev)
         session.add_device(dev)
-    session.add_callback(datafeed_in)
+        dev.open()
+    session.add_datafeed_callback(datafeed_in)
     session.start()
     session.run()
     session.stop()
@@ -90,16 +102,67 @@ class SigrokMeter:
 
     def on_about(self, action):
         about = self.builder.get_object("aboutdialog")
-        sr_pkg = ll.sr_package_version_string_get()
-        sr_lib = ll.sr_lib_version_string_get()
+        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__':
+    args = parse_cli()
     s = SigrokMeter()
-    process = Process(target=init_and_run, args=(s.queue,))
+    process = Process(target=init_and_run,
+            args=(s.queue, args['drivers'], args['loglevel']))
     process.start()
     Gtk.main()
     process.terminate()