From f9818294d09ba8b7dd3614357ce185f79c8c45a1 Mon Sep 17 00:00:00 2001
From: BenediktO <benedikt_o@web.de>
Date: Mon, 27 Jul 2020 08:32:52 +0200
Subject: ir_nec: Make the tolerance configurable
Provide an option to adjust the IR NEC decoder's tolerance. Which makes
signals accessible that are generated by cheap remotes which would not
decode at all with the previous implementation and its fixed limit.
[ gsi: rephrased commit message and implementation ]
---
decoders/ir_nec/pd.py | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/decoders/ir_nec/pd.py b/decoders/ir_nec/pd.py
index 05c8c00..0d79865 100644
--- a/decoders/ir_nec/pd.py
+++ b/decoders/ir_nec/pd.py
@@ -48,6 +48,7 @@ class Decoder(srd.Decoder):
options = (
{'id': 'polarity', 'desc': 'Polarity', 'default': 'active-low',
'values': ('active-low', 'active-high')},
+ {'id': 'tolerance', 'desc': 'Timing tolerance (%)', 'default': 5},
{'id': 'cd_freq', 'desc': 'Carrier Frequency', 'default': 0},
{'id': 'extended', 'desc': 'Extended NEC Protocol',
'default': 'no', 'values': ('yes', 'no')},
@@ -136,7 +137,7 @@ class Decoder(srd.Decoder):
self.samplerate = value
def calc_rate(self):
- self.tolerance = 0.05 # +/-5%
+ self.tolerance = self.options['tolerance'] / 100 # 5% by default
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
--
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