diff options
| -rw-r--r-- | decoders/ir_nec/pd.py | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/decoders/ir_nec/pd.py b/decoders/ir_nec/pd.py index 03a5469..84b2e70 100644 --- a/decoders/ir_nec/pd.py +++ b/decoders/ir_nec/pd.py @@ -111,18 +111,22 @@ class Decoder(srd.Decoder): def metadata(self, key, value): if key == srd.SRD_CONF_SAMPLERATE: self.samplerate = value - self.margin = int(self.samplerate * 0.0001) - 1 # 0.1ms + self.tolerance = 0.05 # +/-5% self.lc = int(self.samplerate * 0.0135) - 1 # 13.5ms self.rc = int(self.samplerate * 0.01125) - 1 # 11.25ms self.dazero = int(self.samplerate * 0.001125) - 1 # 1.125ms self.daone = int(self.samplerate * 0.00225) - 1 # 2.25ms self.stop = int(self.samplerate * 0.000652) - 1 # 0.652ms + def compare_with_tolerance(self, measured, base): + return (measured >= base * (1 - self.tolerance) + and measured <= base * (1 + self.tolerance)) + def handle_bit(self, tick): ret = None - if tick in range(self.dazero - self.margin, self.dazero + self.margin): + if self.compare_with_tolerance(tick, self.dazero): ret = 0 - elif tick in range(self.daone - self.margin, self.daone + self.margin): + elif self.compare_with_tolerance(tick, self.daone): ret = 1 if ret in (0, 1): self.putb([0, ['%d' % ret]]) @@ -164,13 +168,13 @@ class Decoder(srd.Decoder): # State machine. if self.state == 'IDLE': - if b in range(self.lc - self.margin, self.lc + self.margin): + if self.compare_with_tolerance(b, self.lc): self.putpause('Long') self.putx([5, ['Leader code', 'Leader', 'LC', 'L']]) self.ss_remote = self.ss_start self.data = self.count = 0 self.state = 'ADDRESS' - elif b in range(self.rc - self.margin, self.rc + self.margin): + elif self.compare_with_tolerance(b, self.rc): self.putpause('Short') self.putstop(self.samplenum) self.samplenum += self.stop |