uart: rephrase check for required input signals, reword error message

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

diff --git a/decoders/uart/pd.py b/decoders/uart/pd.py
index 7a43ee4851408738dcbdd9b173491008013cfcb4..effa3c5dfc505e8840e7597c82cab0f4fe815daf 100644 (file)
--- a/decoders/uart/pd.py
+++ b/decoders/uart/pd.py
@@ -504,8 +504,8 @@ class Decoder(srd.Decoder):
             raise SamplerateError('Cannot decode without samplerate.')
 
         has_pin = [self.has_channel(ch) for ch in (RX, TX)]
-        if has_pin == [False, False]:
-            raise ChannelError('Either TX or RX (or both) pins required.')
+        if not True in has_pin:
+            raise ChannelError('Need at least one of TX or RX pins.')
 
         opt = self.options
         inv = [opt['invert_rx'] == 'yes', opt['invert_tx'] == 'yes']