import sigrokdecode as srd
import calendar
+from common.srdhelper import bcd2int
-# Return the specified BCD number (max. 8 bits) as integer.
-def bcd2int(b):
- return (b & 0x0f) + ((b >> 4) * 10)
+class SamplerateError(Exception):
+ pass
class Decoder(srd.Decoder):
api_version = 2
('warnings', 'Warnings', (19,)),
)
- def __init__(self, **kwargs):
+ def __init__(self):
self.samplerate = None
self.state = 'WAIT FOR RISING EDGE'
self.oldpins = None
# Even parity over date bits (36-58): DCF77 bit 58.
parity = self.datebits.count(1)
s = 'OK' if ((parity % 2) == 0) else 'INVALID!'
- self.putx([16, ['Date parity: %s' % s, 'DP: %s' %s]])
+ self.putx([16, ['Date parity: %s' % s, 'DP: %s' % s]])
self.datebits = []
else:
raise Exception('Invalid DCF77 bit: %d' % c)
def decode(self, ss, es, data):
- if self.samplerate is None:
- raise Exception("Cannot decode without samplerate.")
+ if not self.samplerate:
+ raise SamplerateError('Cannot decode without samplerate.')
for (self.samplenum, pins) in data:
# Ignore identical samples early on (for performance reasons).
self.state = 'WAIT FOR RISING EDGE'
- else:
- raise Exception('Invalid state: %s' % self.state)
-
self.oldval = val
-