From f5cae9c25db74f9b13c47456fb5a1fd31c34fc4e Mon Sep 17 00:00:00 2001
From: Sandeep Mistry <sandeep.mistry@gmail.com>
Date: Thu, 15 Feb 2018 21:14:03 -0500
Subject: [PATCH] Only call SPI.usingInterrupt if SPI_HAS_NOTUSINGINTERRUPT is
 defined

---
 src/LoRa.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/LoRa.cpp b/src/LoRa.cpp
index 3d62073..96e50dc 100644
--- a/src/LoRa.cpp
+++ b/src/LoRa.cpp
@@ -282,8 +282,9 @@ void LoRaClass::onReceive(void(*callback)(int))
     pinMode(_dio0, INPUT);
 
     writeRegister(REG_DIO_MAPPING_1, 0x00);
-
+#ifdef SPI_HAS_NOTUSINGINTERRUPT
     SPI.usingInterrupt(digitalPinToInterrupt(_dio0));
+#endif
     attachInterrupt(digitalPinToInterrupt(_dio0), LoRaClass::onDio0Rise, RISING);
   } else {
     detachInterrupt(digitalPinToInterrupt(_dio0));