From dfa6a7aa97705900fff1b21d5ce465a0b4e942d7 Mon Sep 17 00:00:00 2001
From: Brendan McDonnell <bmcdonnell@ionxlive.com>
Date: Wed, 28 Feb 2018 14:02:05 -0500
Subject: [PATCH] factor out common function

---
 drivers/InterruptIn.cpp | 8 ++++++--
 drivers/InterruptIn.h   | 2 ++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/InterruptIn.cpp b/drivers/InterruptIn.cpp
index 1e60d4eb50..628c9fa33f 100644
--- a/drivers/InterruptIn.cpp
+++ b/drivers/InterruptIn.cpp
@@ -24,7 +24,7 @@ InterruptIn::InterruptIn(PinName pin) : gpio(),
                                         _rise(NULL),
                                         _fall(NULL) {
     // No lock needed in the constructor
-    gpio_irq_init(&gpio_irq, pin, (&InterruptIn::_irq_handler), (uint32_t)this);
+    irq_init(pin);
     gpio_init_in(&gpio, pin);
 }
 
@@ -34,10 +34,14 @@ InterruptIn::InterruptIn(PinName pin, PinMode mode) :
                                         _rise(NULL),
                                         _fall(NULL) {
     // No lock needed in the constructor
-    gpio_irq_init(&gpio_irq, pin, (&InterruptIn::_irq_handler), (uint32_t)this);
+    irq_init(pin);
     gpio_init_in_ex(&gpio, pin, mode);
 }
 
+void InterruptIn::irq_init(PinName pin) {
+   gpio_irq_init(&gpio_irq, pin, (&InterruptIn::_irq_handler), (uint32_t)this);
+}
+
 InterruptIn::~InterruptIn() {
     // No lock needed in the destructor
     gpio_irq_free(&gpio_irq);
diff --git a/drivers/InterruptIn.h b/drivers/InterruptIn.h
index fc6934dfb0..5c852ef80e 100644
--- a/drivers/InterruptIn.h
+++ b/drivers/InterruptIn.h
@@ -159,6 +159,8 @@ protected:
 
     Callback<void()> _rise;
     Callback<void()> _fall;
+
+    void irq_init(PinName pin);
 };
 
 } // namespace mbed