diff options
Diffstat (limited to 'decoders/usb_signalling/pd.py')
| -rw-r--r-- | decoders/usb_signalling/pd.py | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/decoders/usb_signalling/pd.py b/decoders/usb_signalling/pd.py index f45baf9..c00786a 100644 --- a/decoders/usb_signalling/pd.py +++ b/decoders/usb_signalling/pd.py @@ -115,7 +115,6 @@ class Decoder(srd.Decoder): self.oldsym = 'J' # The "idle" state is J. self.ss_block = None self.samplenum = 0 - self.syms = [] self.bitrate = None self.bitwidth = None self.samplepos = None @@ -176,7 +175,7 @@ class Decoder(srd.Decoder): self.putx([4, ['SOP', 'S']]) self.state = 'GET BIT' - def handle_bit(self, sym, b): + def handle_bit(self, b): if self.consecutive_ones == 6: if b == '0': # Stuff bit. @@ -198,28 +197,28 @@ class Decoder(srd.Decoder): def get_eop(self, sym): # EOP: SE0 for >= 1 bittime (usually 2 bittimes), then J. - self.syms.append(sym) self.putpb(['SYM', sym]) self.putb(sym_annotation[sym]) self.set_new_target_samplenum() self.oldsym = sym - if self.syms[-2:] == ['SE0', 'J']: + if sym == 'SE0': + pass + elif sym == 'J': # Got an EOP. self.putpm(['EOP', None]) self.putm([5, ['EOP', 'E']]) - self.syms, self.state = [], 'IDLE' + self.state = 'IDLE' self.bitwidth = float(self.samplerate) / float(self.bitrate) def get_bit(self, sym): if sym == 'SE0': - # Start of an EOP. Change state, run get_eop() for this bit. + # Start of an EOP. Change state, save edge self.state = 'GET EOP' self.ss_block = self.samplenum - self.get_eop(sym) - return - self.syms.append(sym) + else: + b = '0' if self.oldsym != sym else '1' + self.handle_bit(b) self.putpb(['SYM', sym]) - b = '0' if self.oldsym != sym else '1' self.putb(sym_annotation[sym]) if self.oldsym != sym: edgesym = symbols[self.options['signalling']][tuple(self.edgepins)] @@ -230,7 +229,6 @@ class Decoder(srd.Decoder): else: self.bitwidth = self.bitwidth + (0.001 * self.bitwidth) self.samplepos = self.samplepos + (0.01 * self.bitwidth) - self.handle_bit(sym, b) self.set_new_target_samplenum() self.oldsym = sym |