X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=decoders%2Fps2%2Fpd.py;h=a9d0a986daf0356b265c61f7e1fd6a24a09cfdd2;hb=826981ac5a2105c7231aeb5e5e523cd37ce72edd;hp=1a7f0be988cd6d3af7212b39bd848f27782fb14c;hpb=6c0a0f6177b3de5df9d8a21549f2702d2d04733a;p=libsigrokdecode.git

diff --git a/decoders/ps2/pd.py b/decoders/ps2/pd.py
index 1a7f0be..a9d0a98 100644
--- a/decoders/ps2/pd.py
+++ b/decoders/ps2/pd.py
@@ -33,7 +33,8 @@ class Decoder(srd.Decoder):
     desc = 'PS/2 keyboard/mouse interface.'
     license = 'gplv2+'
     inputs = ['logic']
-    outputs = ['ps2']
+    outputs = []
+    tags = ['PC']
     channels = (
         {'id': 'clk', 'name': 'Clock', 'desc': 'Clock line'},
         {'id': 'data', 'name': 'Data', 'desc': 'Data line'},
@@ -53,8 +54,10 @@ class Decoder(srd.Decoder):
     )
 
     def __init__(self):
+        self.reset()
+
+    def reset(self):
         self.bits = []
-        self.samplenum = 0
         self.bitcount = 0
 
     def start(self):
@@ -113,6 +116,11 @@ class Decoder(srd.Decoder):
 
     def decode(self):
         while True:
-            # Sample data bits on falling clock edge.
-            clock_pin, data_pin = self.wait({0: 'f'})
+            # Sample data bits on the falling clock edge (assume the device
+            # is the transmitter). Expect the data byte transmission to end
+            # at the rising clock edge. Cope with the absence of host activity.
+            _, data_pin = self.wait({0: 'f'})
             self.handle_bits(data_pin)
+            if self.bitcount == 1 + 8 + 1 + 1:
+                _, data_pin = self.wait({0: 'r'})
+                self.handle_bits(data_pin)