uart/i2cfilter: Don't check multiple-choice options.

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

diff --git a/decoders/uart/pd.py b/decoders/uart/pd.py
index a0b13268301611ee654a903d979f922a95d21e3b..63ea50d853f6b8e23ae853a3dafa45297a99bdf8 100644 (file)
--- a/decoders/uart/pd.py
+++ b/decoders/uart/pd.py
@@ -23,10 +23,10 @@ import sigrokdecode as srd
 '''
 OUTPUT_PYTHON format:
 
-UART packet:
-[<packet-type>, <rxtx>, <packet-data>]
+Packet:
+[<ptype>, <rxtx>, <pdata>]
 
-This is the list of <packet-type>s and their respective <packet-data>:
+This is the list of <ptype>s and their respective <pdata> values:
  - 'STARTBIT': The data is the (integer) value of the start bit (0/1).
  - 'DATA': The data is the (integer) value of the UART data. Valid values
    range from 0 to 512 (as the data can be up to 9 bits in size).
@@ -66,8 +66,9 @@ def parity_ok(parity_type, parity_bit, data, num_data_bits):
         return (ones % 2) == 1
     elif parity_type == 'even':
         return (ones % 2) == 0
-    else:
-        raise Exception('Invalid parity type: %d' % parity_type)
+
+class SamplerateError(Exception):
+    pass
 
 class Decoder(srd.Decoder):
     api_version = 2
@@ -239,12 +240,9 @@ class Decoder(srd.Decoder):
             self.databyte[rxtx] >>= 1
             self.databyte[rxtx] |= \
                 (signal << (self.options['num_data_bits'] - 1))
-        elif self.options['bit_order'] == 'msb-first':
+        else:
             self.databyte[rxtx] <<= 1
             self.databyte[rxtx] |= (signal << 0)
-        else:
-            raise Exception('Invalid bit order value: %s',
-                            self.options['bit_order'])
 
         self.putg([rxtx + 12, ['%d' % signal]])
 
@@ -274,8 +272,6 @@ class Decoder(srd.Decoder):
             self.putx(rxtx, [rxtx, [oct(b)[2:].zfill(3)]])
         elif f == 'bin':
             self.putx(rxtx, [rxtx, [bin(b)[2:].zfill(8)]])
-        else:
-            raise Exception('Invalid data format option: %s' % f)
 
         self.putbin(rxtx, (rxtx, bytes([b])))
         self.putbin(rxtx, (2, bytes([b])))
@@ -327,8 +323,8 @@ 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
@@ -360,8 +356,6 @@ class Decoder(srd.Decoder):
                     self.get_parity_bit(rxtx, signal)
                 elif self.state[rxtx] == 'GET STOP BITS':
                     self.get_stop_bits(rxtx, signal)
-                else:
-                    raise Exception('Invalid state: %s' % self.state[rxtx])
 
                 # Save current RX/TX values for the next round.
                 self.oldbit[rxtx] = signal