Diff: targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/inc/em_int.h

Revision:

0:9b334a45a8ff

Child:

50:a417edff4437

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/inc/em_int.h	Thu Oct 01 15:25:22 2015 +0300
@@ -0,0 +1,122 @@
+/***************************************************************************//**
+ * @file em_int.h
+ * @brief Interrupt enable/disable unit API
+ * @version 3.20.12
+ *******************************************************************************
+ * @section License
+ * <b>(C) Copyright 2014 Silicon Labs, http://www.silabs.com</b>
+ *******************************************************************************
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ *
+ * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no
+ * obligation to support this Software. Silicon Labs is providing the
+ * Software "AS IS", with no express or implied warranties of any kind,
+ * including, but not limited to, any implied warranties of merchantability
+ * or fitness for any particular purpose or warranties against infringement
+ * of any proprietary rights of a third party.
+ *
+ * Silicon Labs will not be liable for any consequential, incidental, or
+ * special damages, or any other relief, or for any claim by any third party,
+ * arising from your use of this Software.
+ *
+ ******************************************************************************/
+
+
+#ifndef __SILICON_LABS_EM_INT_H_
+#define __SILICON_LABS_EM_INT_H_
+
+#include "em_device.h"
+
+extern uint32_t INT_LockCnt;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @cond DO_NOT_INCLUDE_WITH_DOXYGEN */
+#ifndef UINT32_MAX
+#define UINT32_MAX ((uint32_t)(0xFFFFFFFF))
+#endif
+/** @endcond */
+
+/***************************************************************************//**
+ * @addtogroup EM_Library
+ * @{
+ ******************************************************************************/
+
+/***************************************************************************//**
+ * @addtogroup INT
+ * @{
+ ******************************************************************************/
+
+/***************************************************************************//**
+ * @brief
+ *   Disable interrupts.
+ *
+ * @details
+ *   Disable interrupts and increment lock level counter.
+ *
+ * @return
+ *   The resulting interrupt nesting level.
+ *
+ ******************************************************************************/
+__STATIC_INLINE uint32_t INT_Disable(void)
+{
+  __disable_irq();
+  if (INT_LockCnt < UINT32_MAX)
+  {
+    INT_LockCnt++;
+  }
+
+  return INT_LockCnt;
+}
+
+/***************************************************************************//**
+ * @brief
+ *   Enable interrupts.
+ *
+ * @return
+ *   The resulting interrupt nesting level.
+ *
+ * @details
+ *   Decrement interrupt lock level counter and enable interrupts if counter
+ *   reached zero.
+ *
+ ******************************************************************************/
+__STATIC_INLINE uint32_t INT_Enable(void)
+{
+  uint32_t retVal;
+
+  if (INT_LockCnt > 0)
+  {
+    INT_LockCnt--;
+    retVal = INT_LockCnt;
+    if (retVal == 0)
+    {
+      __enable_irq();
+    }
+    return retVal;
+  }
+  else
+  {
+    return 0;
+  }
+}
+
+/** @} (end addtogroup INT) */
+/** @} (end addtogroup EM_Library) */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __SILICON_LABS_EM_INT_H_ */