]
def __init__(self):
+ self.samplerate = None
self.oldsym = 'J' # The "idle" state is J.
self.ss_sop = None
self.ss_block = None
self.consecutive_ones = 0
self.state = 'IDLE'
- def start(self, metadata):
- self.out_proto = self.add(srd.OUTPUT_PROTO, 'usb_signalling')
- 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 start(self):
+ self.out_proto = self.register(srd.OUTPUT_PYTHON)
+ self.out_ann = self.register(srd.OUTPUT_ANN)
- def report(self):
- pass
+ def metadata(self, key, value):
+ if key == srd.SRD_CONF_SAMPLERATE:
+ self.samplerate = value
+ self.bitrate = bitrates[self.options['signalling']]
+ self.bitwidth = float(self.samplerate) / float(self.bitrate)
+ self.halfbit = int(self.bitwidth / 2)
def putpx(self, data):
self.put(self.samplenum, self.samplenum, self.out_proto, data)
self.oldsym = sym
def decode(self, ss, es, data):
+ if self.samplerate is None:
+ raise Exception("Cannot decode without samplerate.")
for (self.samplenum, pins) in data:
# State machine.
if self.state == 'IDLE':