diff options
Diffstat (limited to 'decoders/usb_signalling/pd.py')
| -rw-r--r-- | decoders/usb_signalling/pd.py | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/decoders/usb_signalling/pd.py b/decoders/usb_signalling/pd.py index 44aaaca..3a5e395 100644 --- a/decoders/usb_signalling/pd.py +++ b/decoders/usb_signalling/pd.py @@ -75,7 +75,8 @@ class Decoder(srd.Decoder): def __init__(self): self.oldsym = 'J' # The "idle" state is J. - self.ss_sop = -1 + self.ss_sop = None + self.ss_block = None self.samplenum = 0 self.packet = '' self.syms = [] @@ -92,6 +93,7 @@ class Decoder(srd.Decoder): self.out_ann = self.add(srd.OUTPUT_ANN, 'usb_signalling') self.bitrate = bitrates[self.options['signalling']] self.bitwidth = float(metadata['samplerate']) / float(self.bitrate) + self.halfbit = int(self.bitwidth / 2) def report(self): pass @@ -102,13 +104,21 @@ class Decoder(srd.Decoder): def putx(self, data): self.put(self.samplenum, self.samplenum, self.out_ann, data) + def putpm(self, data): + s, h = self.samplenum, self.halfbit + self.put(self.ss_block - h, self.samplenum + h, self.out_proto, data) + + def putm(self, data): + s, h = self.samplenum, self.halfbit + self.put(self.ss_block - h, self.samplenum + h, self.out_ann, data) + def putpb(self, data): - s, halfbit = self.samplenum, int(self.bitwidth / 2) - self.put(s - halfbit, s + halfbit, self.out_proto, data) + s, h = self.samplenum, self.halfbit + self.put(s - h, s + h, self.out_proto, data) def putb(self, data): - s, halfbit = self.samplenum, int(self.bitwidth / 2) - self.put(s - halfbit, s + halfbit, self.out_ann, data) + s, h = self.samplenum, self.halfbit + self.put(s - h, s + h, self.out_ann, data) def set_new_target_samplenum(self): bitpos = self.ss_sop + (self.bitwidth / 2) @@ -150,6 +160,8 @@ class Decoder(srd.Decoder): self.oldsym = sym if self.syms[-2:] == ['SE0', 'J']: # Got an EOP, i.e. we now have a full packet. + self.putpm(['EOP', None]) + self.putm([2, ['EOP']]) self.putpb(['PACKET', self.packet]) self.putb([5, ['PACKET: %s' % self.packet]]) self.bitnum, self.packet, self.syms, self.state = 0, '', [], 'IDLE' @@ -159,6 +171,7 @@ class Decoder(srd.Decoder): if sym == 'SE0': # Start of an EOP. Change state, run get_eop() for this bit. self.state = 'GET EOP' + self.ss_block = self.samplenum self.get_eop(sym) return self.syms.append(sym) |