Add some statistics to the monsoon profile run

tools/telemetry/telemetry/core/platform/profiler/monsoon.py

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Interface for a USB-connected Monsoon power meter
 (http://msoon.com/LabEquipment/PowerMonitor/).
 
 Currently Unix-only. Relies on fcntl, /dev, and /tmp.
 """
 
@@ skipping 181 matching lines @@
       if self._last_seq and seq & 0xF != (self._last_seq + 1) & 0xF:
         logging.info('data sequence skipped, lost packet?')
       self._last_seq = seq
 
       if packet_type == 0:
         if not self._coarse_scale or not self._fine_scale:
           logging.info('waiting for calibration, dropped data packet')
           continue
 
         out = []
-        for main, usb, _, voltage in data:
-          main_voltage_v = self._voltage_multiplier * (voltage & ~3)
+        for main, usb, _, _ in data:
           sample = 0.0
           if main & 1:
             sample += ((main & ~1) - self._coarse_zero) * self._coarse_scale
           else:
             sample += (main - self._fine_zero) * self._fine_scale
           if usb & 1:
             sample += ((usb & ~1) - self._coarse_zero) * self._coarse_scale
           else:
             sample += (usb - self._fine_zero) * self._fine_scale
-          out.append((sample, main_voltage_v))

[dtu, 2014/03/03 23:24:48]

I've got another patch for this: https://codereview.chromium.org/185643005

[tonyg, 2014/03/08 17:30:03]

If you rebase, the changes in this file should no longer be needed.

+          out.append(sample)
         return out
 
       elif packet_type == 1:
         self._fine_zero = data[0][0]
         self._coarse_zero = data[1][0]
 
       elif packet_type == 2:
         self._fine_ref = data[0][0]
         self._coarse_ref = data[1][0]
 
@@ skipping 48 matching lines @@
         logging.error('exception from serial port')
         return None
       elif len(ready_r) > 0:
         flushed += 1
         self.ser.read(1)  # This may cause underlying buffering.
         self.ser.flush()  # Flush the underlying buffer too.
       else:
         break
     if flushed > 0:
       logging.debug('dropped >%d bytes', flushed)