X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=decoders%2Fuart%2Fpd.py;h=da5e3033b3023cce80f8416ac96b580815d80eb0;hb=21cda9512f29947617da45822ab524b1f76f56c1;hp=ff8a5163a40a844a57a69b3d4485cc680b50324f;hpb=e28f7aee3b96afeb543e0c3c29e3950ddd61a490;p=libsigrokdecode.git

diff --git a/decoders/uart/pd.py b/decoders/uart/pd.py
index ff8a516..da5e303 100644
--- a/decoders/uart/pd.py
+++ b/decoders/uart/pd.py
@@ -69,6 +69,9 @@ def parity_ok(parity_type, parity_bit, data, num_data_bits):
     else:
         raise Exception('Invalid parity type: %d' % parity_type)
 
+class SamplerateError(Exception):
+    pass
+
 class Decoder(srd.Decoder):
     api_version = 2
     id = 'uart'
@@ -327,8 +330,8 @@ class Decoder(srd.Decoder):
         self.putg([rxtx + 4, ['Stop bit', 'Stop', 'T']])
 
     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:
 
             # Note: Ignoring identical samples here for performance reasons