diff --git a/libraries/SPI/SPI.cpp b/libraries/SPI/SPI.cpp
index 93bb027486..2650998b69 100644
--- a/libraries/SPI/SPI.cpp
+++ b/libraries/SPI/SPI.cpp
@@ -515,9 +515,11 @@ void SPIClass::writePattern(const uint8_t * data, uint8_t size, uint32_t repeat)
}
}
//End orig
- setDataBits(repeatRem * 8);
- SPI1CMD |= SPIBUSY;
- while(SPI1CMD & SPIBUSY) {}
+ if (repeatRem) {
+ setDataBits(repeatRem * 8);
+ SPI1CMD |= SPIBUSY;
+ while(SPI1CMD & SPIBUSY) {}
+ }
SPI1U = SPIUMOSI | SPIUDUPLEX | SPIUSSE;
}
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