111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
/***************************************************************************//**
|
|
* @file
|
|
* @brief Interrupt enable/disable unit API for EFM32.
|
|
* @author Energy Micro AS
|
|
* @version 2.3.2
|
|
*******************************************************************************
|
|
* @section License
|
|
* <b>(C) Copyright 2011 Energy Micro AS, http://www.energymicro.com</b>
|
|
*******************************************************************************
|
|
*
|
|
* This source code is the property of Energy Micro AS. The source and compiled
|
|
* code may only be used on Energy Micro "EFM32" microcontrollers.
|
|
*
|
|
* This copyright notice may not be removed from the source code nor changed.
|
|
*
|
|
* DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Energy Micro AS has no
|
|
* obligation to support this Software. Energy Micro AS 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.
|
|
*
|
|
* Energy Micro AS 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 __EFM32_INT_H
|
|
#define __EFM32_INT_H
|
|
|
|
#include "efm32.h"
|
|
|
|
extern uint32_t INT_LockCnt;
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/***************************************************************************//**
|
|
* @addtogroup EFM32_Library
|
|
* @{
|
|
******************************************************************************/
|
|
|
|
/***************************************************************************//**
|
|
* @addtogroup INT
|
|
* @{
|
|
******************************************************************************/
|
|
|
|
/***************************************************************************//**
|
|
* @brief
|
|
* Disable interrupts.
|
|
*
|
|
* @return
|
|
* The resulting interrupt nesting level.
|
|
*
|
|
* @details
|
|
* Disable interrupts and increment lock level counter.
|
|
*
|
|
******************************************************************************/
|
|
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 EFM32_Library) */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __EFM32_INT_H */
|