srd: All PDs: Various fixes, cosmetics.

[libsigrokdecode.git] / decoders / ddc / ddc.py

diff --git a/decoders/ddc/ddc.py b/decoders/ddc/ddc.py
index f83909323b8b2a70d6d894f6e0db1a2ef22d91d4..f59be8e26190649ab0c6b158dff252fadd5b9752 100644 (file)
--- a/decoders/ddc/ddc.py
+++ b/decoders/ddc/ddc.py
@@ -28,6 +28,7 @@ https://en.wikipedia.org/wiki/Display_Data_Channel
 import sigrokdecode as srd
 
 class Decoder(srd.Decoder):
+    api_version = 1
     id = 'ddc'
     name = 'DDC'
     longname = 'Display Data Channel'
@@ -37,6 +38,7 @@ class Decoder(srd.Decoder):
     inputs = ['i2c']
     outputs = ['ddc']
     probes = []
+    extra_probes = []
     options = {}
     annotations = [
         ['Byte stream', 'DDC byte stream as read from display.'],
@@ -48,11 +50,14 @@ class Decoder(srd.Decoder):
     def start(self, metadata):
         self.out_ann = self.add(srd.OUTPUT_ANN, 'ddc')
 
+    def report(self):
+        pass
+
     def decode(self, ss, es, data):
         try:
             cmd, data, ack_bit = data
         except Exception as e:
-            raise Exception('malformed I2C input: %s' % str(e)) from e
+            raise Exception('Malformed I2C input: %s' % str(e)) from e
 
         if self.state is None:
             # Wait for the DDC session to start.
@@ -71,4 +76,6 @@ class Decoder(srd.Decoder):
                 # There shouldn't be anything but data reads on this
                 # address, so ignore everything else.
                 self.put(ss, es, self.out_ann, [0, ['0x%.2x' % data]])
+        else:
+            raise Exception('Invalid state: %s' % self.state)