From: David Barksdale <redacted>
Date: Mon, 15 Sep 2014 16:50:09 +0000 (-0500)
Subject: uart: Implement signal inversion
X-Git-Tag: libsigrokdecode-0.4.0~170
X-Git-Url: https://sigrok.org/gitweb/?p=libsigrokdecode.git;a=commitdiff_plain;h=4eafeeefc716a617837f1d69c040753b0b8d71f7

uart: Implement signal inversion
---

diff --git a/decoders/uart/pd.py b/decoders/uart/pd.py
index d13a119..b8508a7 100644
--- a/decoders/uart/pd.py
+++ b/decoders/uart/pd.py
@@ -102,7 +102,10 @@ class Decoder(srd.Decoder):
             'values': ('lsb-first', 'msb-first')},
         {'id': 'format', 'desc': 'Data format', 'default': 'ascii',
             'values': ('ascii', 'dec', 'hex', 'oct', 'bin')},
-        # TODO: Options to invert the signal(s).
+        {'id': 'invert_rx', 'desc': 'Invert RX?', 'default': 'no',
+            'values': ('yes', 'no')},
+        {'id': 'invert_tx', 'desc': 'Invert TX?', 'default': 'no',
+            'values': ('yes', 'no')},
     )
     annotations = (
         ('rx-data', 'RX data'),
@@ -336,6 +339,11 @@ class Decoder(srd.Decoder):
             #     continue
             self.oldpins, (rx, tx) = pins, pins
 
+            if self.options['invert_rx'] == 'yes':
+                rx = not rx
+            if self.options['invert_tx'] == 'yes':
+                tx = not tx
+
             # Either RX or TX (but not both) can be omitted.
             has_pin = [rx in (0, 1), tx in (0, 1)]
             if has_pin == [False, False]: