All PDs: Minor whitespace and consistency fixes.

[libsigrokdecode.git] / decoders / ir_rc5 / pd.py

diff --git a/decoders/ir_rc5/pd.py b/decoders/ir_rc5/pd.py
index 38b479327eaab9c2d6f5e4793faf7ba0c71f9833..4926cb624d4abe822b855c379cbafe7f3edb0a76 100644 (file)
--- a/decoders/ir_rc5/pd.py
+++ b/decoders/ir_rc5/pd.py
@@ -21,6 +21,9 @@
 import sigrokdecode as srd
 from .lists import *
 
+class SamplerateError(Exception):
+    pass
+
 class Decoder(srd.Decoder):
     api_version = 2
     id = 'ir_rc5'
@@ -133,8 +136,8 @@ class Decoder(srd.Decoder):
         self.state = 'IDLE'
 
     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:
 
             self.ir = pins[0]
@@ -168,11 +171,9 @@ class Decoder(srd.Decoder):
                 if edge == 's':
                     self.state = 'MID0'
                 bit = 0 if edge == 's' else None
-            else:
-                raise Exception('Invalid state: %s' % self.state)
 
             self.edges.append(self.samplenum)
-            if bit != None:
+            if bit is not None:
                 self.bits.append([self.samplenum, bit])
 
             if len(self.bits) == 14:
@@ -180,4 +181,3 @@ class Decoder(srd.Decoder):
                 self.reset_decoder_state()
 
             self.old_ir = self.ir
-