diff options
Diffstat (limited to 'lib/lennart/DataProcessor.py')
| -rw-r--r-- | lib/lennart/DataProcessor.py | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/lib/lennart/DataProcessor.py b/lib/lennart/DataProcessor.py index b969d5c..437001e 100644 --- a/lib/lennart/DataProcessor.py +++ b/lib/lennart/DataProcessor.py @@ -39,15 +39,19 @@ class DataProcessor: Main Function to remove unwanted data, get synchronization points, add the offset and add drift. :return: None """ - # remove Dirty Data from previously running program (happens if logic Analyzer Measurement starts earlier than - # the HW Reset from energytrace) - use_data_after_index = 0 - for x in range(1, len(self.sync_data.timestamps)): - if self.sync_data.timestamps[x] - self.sync_data.timestamps[x - 1] > 1.3: - use_data_after_index = x + + # Remove bogus data before / after the measurement + + time_stamp_data = self.sync_data.timestamps + for x in range(1, len(time_stamp_data)): + if time_stamp_data[x] - time_stamp_data[x - 1] > 1.3: + time_stamp_data = time_stamp_data[x:] break - time_stamp_data = self.sync_data.timestamps[use_data_after_index:] + for x in reversed(range(1, len(time_stamp_data))): + if time_stamp_data[x] - time_stamp_data[x - 1] > 1.3: + time_stamp_data = time_stamp_data[:x] + break # Each synchronization pulse consists of two LogicAnalyzer pulses, so four # entries in time_stamp_data (rising edge, falling edge, rising edge, falling edge). @@ -141,6 +145,8 @@ class DataProcessor: # actual transition timestamps here. if os.getenv("DFATOOL_COMPENSATE_DRIFT"): if len(self.hw_statechange_indexes): + # measurement was performed with EnergyTrace++ + # (i.e., with cpu state annotations) with_drift_compensation = self.compensateDriftPlusplus(with_drift[4:-8]) else: with_drift_compensation = self.compensateDrift(with_drift[4:-8]) @@ -167,6 +173,7 @@ class DataProcessor: return sync_timestamps_with_drift def compensateDriftPlusplus(self, sync_timestamps): + """Use hardware state changes reported by EnergyTrace++ to determine transition timestamps.""" expected_transition_start_timestamps = sync_timestamps[::2] compensated_timestamps = list() drift = 0 |