- bitcount = 0
-
- if self.sym == 'SE0':
- if bitcount == 1:
- # End-Of-Packet (EOP)
- # self.put(0, 0, self.out_ann,
- # [0, [packet_decode(self.packet), self.packet]])
- if self.packet != '': # FIXME?
- self.put(0, 0, self.out_ann, [0, ['PACKET: %s' % self.packet]])
- self.put(0, 0, self.out_proto, ['PACKET', self.packet])
+ self.putpb(['ERR', None])
+ self.putb([8, ['Bit stuff error', 'BS ERR', 'B']])
+ self.state = 'IDLE'
+ else:
+ # Normal bit (not a stuff bit).
+ self.putpb(['BIT', b])
+ self.putb([6, ['%s' % b]])
+ if b == '1':
+ self.consecutive_ones += 1
+ else:
+ self.consecutive_ones = 0
+
+ def get_eop(self, sym):
+ # EOP: SE0 for >= 1 bittime (usually 2 bittimes), then J.
+ self.set_new_target_samplenum()
+ self.putpb(['SYM', sym])
+ self.putb(sym_annotation[sym])
+ self.oldsym = sym
+ if sym == 'SE0':
+ pass
+ elif sym == 'J':
+ # Got an EOP.
+ self.putpm(['EOP', None])
+ self.putm([5, ['EOP', 'E']])
+ self.state = 'WAIT IDLE'
+ else:
+ self.putpm(['ERR', None])
+ self.putm([8, ['EOP Error', 'EErr', 'E']])
+ self.state = 'IDLE'
+
+ def get_bit(self, sym):
+ self.set_new_target_samplenum()
+ b = '0' if self.oldsym != sym else '1'
+ self.oldsym = sym
+ if sym == 'SE0':
+ # Start of an EOP. Change state, save edge
+ self.state = 'GET EOP'
+ self.ss_block = self.samplenum_lastedge
+ else:
+ self.handle_bit(b)
+ self.putpb(['SYM', sym])
+ self.putb(sym_annotation[sym])
+ if len(self.bits) <= 16:
+ self.bits += b
+ if len(self.bits) == 16 and self.bits == '0000000100111100':
+ # Sync and low-speed PREamble seen
+ self.putpx(['EOP', None])
+ self.state = 'IDLE'
+ self.signalling = 'low-speed-rp'
+ self.update_bitrate()
+ self.oldsym = 'J'
+ if b == '0':
+ edgesym = symbols[self.signalling][tuple(self.edgepins)]
+ if edgesym not in ('SE0', 'SE1'):
+ if edgesym == sym:
+ self.bitwidth = self.bitwidth - (0.001 * self.bitwidth)
+ self.samplepos = self.samplepos - (0.01 * self.bitwidth)