From 1935258e5868d262d8705bf8e93acd8490808e1e Mon Sep 17 00:00:00 2001
From: nick <nchristensen@pregis.com>
Date: Mon, 12 Aug 2019 11:23:33 -0500
Subject: [PATCH] required change for compatibility with Leonardo and probably
 other boards

---
 examples/receive_interrupt/receive_interrupt.ino | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/examples/receive_interrupt/receive_interrupt.ino b/examples/receive_interrupt/receive_interrupt.ino
index 344f409..5992f75 100644
--- a/examples/receive_interrupt/receive_interrupt.ino
+++ b/examples/receive_interrupt/receive_interrupt.ino
@@ -28,7 +28,9 @@ char str[20];
 void setup()
 {
     SERIAL.begin(115200);
-
+    while (!SERIAL) {
+      ; // wait for serial port to connect. Needed for native USB port only
+    }
     while (CAN_OK != CAN.begin(CAN_500KBPS))              // init can bus : baudrate = 500k
     {
         SERIAL.println("CAN BUS Shield init fail");