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-rw-r--r--decoders/spi/pd.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/decoders/spi/pd.py b/decoders/spi/pd.py
index 679335e..d077cca 100644
--- a/decoders/spi/pd.py
+++ b/decoders/spi/pd.py
@@ -193,7 +193,10 @@ class Decoder(srd.Decoder):
# Guesstimate the endsample for this bit (can be overridden below).
es = self.samplenum
if self.bitcount > 0:
- es += self.samplenum - self.misobits[0][1]
+ if self.have_miso:
+ es += self.samplenum - self.misobits[0][1]
+ elif self.have_mosi:
+ es += self.samplenum - self.mosibits[0][1]
if self.have_miso:
self.misobits.insert(0, [miso, self.samplenum, es])