onewire_network: add a 'Disable Test Mode' command for DS2408

For details see the DS2408 datasheet, section "Power-up timing".

This commit is adding this missing command so now a full decoding
is possible:
Annotations from 1-Wire network layer:
8990980-8991220 1-Wire network layer: : Reset/presence: true
8994163-8994437 1-Wire network layer: : ROM command: 0x96 'DS2408: Disable Test Mode'
8995026-9008178 1-Wire network layer: : ROM: 0xa30000001246a929
9008785-9009060 1-Wire network layer: : Data: 0x3c
9012290-9012530 1-Wire network layer: : Reset/presence: true

And from the specific stacked DS2408 slave:
8990980-8991220 DS2408: : Reset/presence: true
8995026-9008178 DS2408: : ROM: 0xa30000001246a929 (family code 0x29)
9008785-9009060 DS2408: : Disable Test Mode (0x3c)
9012290-9012530 DS2408: : Reset/presence: true

diff --git a/decoders/onewire_network/pd.py b/decoders/onewire_network/pd.py
index c31d5f96b2e66aa67d86fb7518bc407587dec312..ef302aea4435cfde5f4e6b1d921fa17385546430 100644 (file)
--- a/decoders/onewire_network/pd.py
+++ b/decoders/onewire_network/pd.py
@@ -21,15 +21,16 @@ import sigrokdecode as srd
 
 # Dictionary of ROM commands and their names, next state.
 command = {
-    0x33: ['Read ROM'              , 'GET ROM'   ],
-    0x0f: ['Conditional read ROM'  , 'GET ROM'   ],
-    0xcc: ['Skip ROM'              , 'TRANSPORT' ],
-    0x55: ['Match ROM'             , 'GET ROM'   ],
-    0xf0: ['Search ROM'            , 'SEARCH ROM'],
-    0xec: ['Conditional search ROM', 'SEARCH ROM'],
-    0x3c: ['Overdrive skip ROM'    , 'TRANSPORT' ],
-    0x69: ['Overdrive match ROM'   , 'GET ROM'   ],
-    0xa5: ['Resume'                , 'TRANSPORT' ],
+    0x33: ['Read ROM'                  , 'GET ROM'   ],
+    0x0f: ['Conditional read ROM'      , 'GET ROM'   ],
+    0xcc: ['Skip ROM'                  , 'TRANSPORT' ],
+    0x55: ['Match ROM'                 , 'GET ROM'   ],
+    0xf0: ['Search ROM'                , 'SEARCH ROM'],
+    0xec: ['Conditional search ROM'    , 'SEARCH ROM'],
+    0x3c: ['Overdrive skip ROM'        , 'TRANSPORT' ],
+    0x69: ['Overdrive match ROM'       , 'GET ROM'   ],
+    0xa5: ['Resume'                    , 'TRANSPORT' ],
+    0x96: ['DS2408: Disable Test Mode' , 'GET ROM'   ],
 }
 
 class Decoder(srd.Decoder):