From 64c29e28e0efa184319f7831b3eca18c7f73f7d0 Mon Sep 17 00:00:00 2001 From: Uwe Hermann Date: Sun, 15 Jan 2012 15:36:01 +0100 Subject: srd: Each PD now has its own subdirectory. --- decoders/transitioncounter/Makefile.am | 26 ++++++ decoders/transitioncounter/__init__.py | 22 ++++++ decoders/transitioncounter/transitioncounter.py | 100 ++++++++++++++++++++++++ 3 files changed, 148 insertions(+) create mode 100644 decoders/transitioncounter/Makefile.am create mode 100644 decoders/transitioncounter/__init__.py create mode 100644 decoders/transitioncounter/transitioncounter.py (limited to 'decoders/transitioncounter') diff --git a/decoders/transitioncounter/Makefile.am b/decoders/transitioncounter/Makefile.am new file mode 100644 index 0000000..74688a3 --- /dev/null +++ b/decoders/transitioncounter/Makefile.am @@ -0,0 +1,26 @@ +## +## This file is part of the sigrok project. +## +## Copyright (C) 2012 Uwe Hermann +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; either version 2 of the License, or +## (at your option) any later version. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +pkgdatadir = $(DECODERS_DIR)/transitioncounter + +dist_pkgdata_DATA = __init__.py transitioncounter.py + +CLEANFILES = *.pyc + diff --git a/decoders/transitioncounter/__init__.py b/decoders/transitioncounter/__init__.py new file mode 100644 index 0000000..bdf296b --- /dev/null +++ b/decoders/transitioncounter/__init__.py @@ -0,0 +1,22 @@ +## +## This file is part of the sigrok project. +## +## Copyright (C) 2012 Uwe Hermann +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; either version 2 of the License, or +## (at your option) any later version. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +from .transitioncounter import * + diff --git a/decoders/transitioncounter/transitioncounter.py b/decoders/transitioncounter/transitioncounter.py new file mode 100644 index 0000000..4c832b0 --- /dev/null +++ b/decoders/transitioncounter/transitioncounter.py @@ -0,0 +1,100 @@ +## +## This file is part of the sigrok project. +## +## Copyright (C) 2010 Uwe Hermann +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; either version 2 of the License, or +## (at your option) any later version. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +import sigrokdecode as srd + +class Decoder(srd.Decoder): + id = 'transitioncounter' + name = 'Transition counter' + longname = 'Pin transition counter' + desc = 'Counts rising/falling edges in the signal.' + longdesc = '...' + license = 'gplv2+' + inputs = ['logic'] + outputs = ['transitioncounts'] + probes = [] + options = {} + annotations = [ + ['TODO', 'TODO'], + ] + + def __init__(self, **kwargs): + self.channels = -1 + self.lastsample = None + + def start(self, metadata): + # self.out_proto = self.add(srd.OUTPUT_PROTO, 'transitioncounter') + self.out_ann = self.add(srd.OUTPUT_ANN, 'transitioncounter') + + def report(self): + pass + + def decode(self, ss, es, data): + + for (samplenum, s) in data: + + # ... + if self.channels == -1: + self.channels = len(s) + self.oldbit = [0] * self.channels + self.transitions = [0] * self.channels + self.rising = [0] * self.channels + self.falling = [0] * self.channels + + # Optimization: Skip identical samples (no transitions). + if self.lastsample == s: + continue + + # Upon the first sample, store the initial values. + if self.lastsample == None: + self.lastsample = s + for i in range(self.channels): + self.oldbit[i] = self.lastsample[i] + + # Iterate over all channels/probes in this sample. + # Count rising and falling edges for each channel. + for i in range(self.channels): + curbit = s[i] + # Optimization: Skip identical bits (no transitions). + if self.oldbit[i] == curbit: + continue + elif (self.oldbit[i] == 0 and curbit == 1): + self.rising[i] += 1 + elif (self.oldbit[i] == 1 and curbit == 0): + self.falling[i] += 1 + self.oldbit[i] = curbit + + # Save the current sample as 'lastsample' for the next round. + self.lastsample = s + + # Total number of transitions = rising + falling edges. + for i in range(self.channels): + self.transitions[i] = self.rising[i] + self.falling[i] + + # TODO: Which output format? + # TODO: How to only output something after the last chunk of data? + outdata = [] + for i in range(self.channels): + outdata += [[self.transitions[i], self.rising[i], self.falling[i]]] + + if outdata != []: + # self.put(0, 0, self.out_proto, out_proto) + self.put(0, 0, self.out_ann, [0, [str(outdata)]]) + -- cgit v1.2.3-70-g09d2