STM32F2: Add EXTI support.

Add series headers to keep the base pointers, and (on F2) use SYSCFG
to tell exti_do_select() where the EXTI control registers are. No
surprises.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/libmaple/stm32f2/exti.c b/libmaple/stm32f2/exti.c
new file mode 100644
index 0000000..208415f
--- /dev/null
+++ b/libmaple/stm32f2/exti.c
@@ -0,0 +1,33 @@
+/******************************************************************************
+ * The MIT License
+ *
+ * Copyright (c) 2012 LeafLabs, LLC.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+*****************************************************************************/
+
+#include <libmaple/exti.h>
+#include <libmaple/syscfg.h>
+#include "exti_private.h"
+
+void exti_select(exti_num num, exti_cfg cfg) {
+    exti_do_select(&SYSCFG_BASE->EXTICR[num / 4], num, cfg);
+}