From 1379ab4777aaf2b9acb5fa4cf59e0321b8b4924f Mon Sep 17 00:00:00 2001
From: Karl Palsson <karlp@tweak.net.au>
Date: Sun, 4 Mar 2018 00:02:44 +0000
Subject: [PATCH] stm32l4: enable common exti functionality

tested on l476 disco board.
---
 include/libopencm3/stm32/exti.h    |  2 ++
 include/libopencm3/stm32/l4/exti.h | 23 +++++++++++++++++++++++
 lib/stm32/l4/Makefile              |  1 +
 3 files changed, 26 insertions(+)
 create mode 100644 include/libopencm3/stm32/l4/exti.h

diff --git a/include/libopencm3/stm32/exti.h b/include/libopencm3/stm32/exti.h
index a9f17ff6..a612c6eb 100644
--- a/include/libopencm3/stm32/exti.h
+++ b/include/libopencm3/stm32/exti.h
@@ -36,6 +36,8 @@
 #       include <libopencm3/stm32/l0/exti.h>
 #elif defined(STM32L1)
 #       include <libopencm3/stm32/l1/exti.h>
+#elif defined(STM32L4)
+#       include <libopencm3/stm32/l4/exti.h>
 #else
 #       error "stm32 family not defined."
 #endif
diff --git a/include/libopencm3/stm32/l4/exti.h b/include/libopencm3/stm32/l4/exti.h
new file mode 100644
index 00000000..3dd2c76c
--- /dev/null
+++ b/include/libopencm3/stm32/l4/exti.h
@@ -0,0 +1,23 @@
+/*
+ * This file is part of the libopencm3 project.
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef LIBOPENCM3_EXTI_H
+#define LIBOPENCM3_EXTI_H
+
+#include <libopencm3/stm32/common/exti_common_all.h>
+
+#endif
diff --git a/lib/stm32/l4/Makefile b/lib/stm32/l4/Makefile
index bcd76992..9422554f 100644
--- a/lib/stm32/l4/Makefile
+++ b/lib/stm32/l4/Makefile
@@ -43,6 +43,7 @@ OBJS		= adc.o flash.o pwr.o rcc.o
 # common/shared objs
 OBJS            += rcc_common_all.o
 OBJS            += gpio_common_all.o gpio_common_f0234.o
+OBJS            += exti_common_all.o
 OBJS            += adc_common_v2.o adc_common_v2_multi.o
 OBJS            += crc_common_all.o crc_v2.o
 OBJS            += crs_common_all.o