From: Philipp Marek <redacted>
Date: Wed, 6 Nov 2019 18:26:49 +0000 (+0100)
Subject: ws281x: Check for "None" before subtracting.
X-Git-Url: https://sigrok.org/gitweb/?p=libsigrokdecode.git;a=commitdiff_plain;h=3bf6bf42536d5bb374be89fb50e2a2088371eee5

ws281x: Check for "None" before subtracting.
---

diff --git a/decoders/rgb_led_ws281x/pd.py b/decoders/rgb_led_ws281x/pd.py
index a6bb356..adf68eb 100644
--- a/decoders/rgb_led_ws281x/pd.py
+++ b/decoders/rgb_led_ws281x/pd.py
@@ -89,6 +89,7 @@ class Decoder(srd.Decoder):
             # Check RESET condition (manufacturer recommends 50 usec minimal,
             # but real minimum is ~10 usec).
             if not self.inreset and not pin and self.es is not None and \
+                    self.ss is not None and \
                     (self.samplenum - self.es) / self.samplerate > 50e-6:
 
                 # Decode last bit value.