From 9366ed77a615addc3a845021ec7c36bbd3e69cf9 Mon Sep 17 00:00:00 2001
From: Giovanni Di Sirio <gdisirio@gmail.com>
Date: Wed, 1 Apr 2015 13:22:44 +0000
Subject: [PATCH] git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7841
 35acf78f-673a-0410-8e92-d51de3d6d3f4

---
 os/hal/ports/common/ARMCMx/nvic.c | 10 ++++++++++
 os/hal/ports/common/ARMCMx/nvic.h |  1 +
 2 files changed, 11 insertions(+)

diff --git a/os/hal/ports/common/ARMCMx/nvic.c b/os/hal/ports/common/ARMCMx/nvic.c
index 8c9217333..93e74ca82 100644
--- a/os/hal/ports/common/ARMCMx/nvic.c
+++ b/os/hal/ports/common/ARMCMx/nvic.c
@@ -85,4 +85,14 @@ void nvicSetSystemHandlerPriority(uint32_t handler, uint32_t prio) {
   SCB->SHP[handler] = NVIC_PRIORITY_MASK(prio);
 }
 
+/**
+ * @brief   Clears a pending interrupt source.
+ *
+ * @param[in] n         the interrupt number
+ */
+void nvicClearPending(uint32_t n) {
+
+  NVIC->ICPR[n >> 5] = 1 << (n & 0x1F);
+}
+
 /** @} */
diff --git a/os/hal/ports/common/ARMCMx/nvic.h b/os/hal/ports/common/ARMCMx/nvic.h
index dca4afb79..636cba3b1 100644
--- a/os/hal/ports/common/ARMCMx/nvic.h
+++ b/os/hal/ports/common/ARMCMx/nvic.h
@@ -78,6 +78,7 @@ extern "C" {
   void nvicEnableVector(uint32_t n, uint32_t prio);
   void nvicDisableVector(uint32_t n);
   void nvicSetSystemHandlerPriority(uint32_t handler, uint32_t prio);
+  void nvicClearPending(uint32_t n);
 #ifdef __cplusplus
 }
 #endif