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-rw-r--r--decoders/uart/pd.py7
1 files changed, 5 insertions, 2 deletions
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