X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=decoders%2Fguess_bitrate%2Fpd.py;h=1d7434beb738fadfd2f51b91ddbf95502e1e9cb3;hb=21cda9512f29947617da45822ab524b1f76f56c1;hp=e86316fb86d7c384c2fb74ec0a1869c1d22aebdc;hpb=12851357e784b893e24880efc6cd22a0cbcc64ce;p=libsigrokdecode.git

diff --git a/decoders/guess_bitrate/pd.py b/decoders/guess_bitrate/pd.py
index e86316f..1d7434b 100644
--- a/decoders/guess_bitrate/pd.py
+++ b/decoders/guess_bitrate/pd.py
@@ -20,6 +20,9 @@
 
 import sigrokdecode as srd
 
+class SamplerateError(Exception):
+    pass
+
 class Decoder(srd.Decoder):
     api_version = 2
     id = 'guess_bitrate'
@@ -53,8 +56,8 @@ class Decoder(srd.Decoder):
             self.samplerate = value;
 
     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:
 
             data = pins[0]