109 lines
3.9 KiB
C
109 lines
3.9 KiB
C
/***************************************************************************//**
|
|
* @file
|
|
* @brief Bitband Peripheral API
|
|
* @author Energy Micro AS
|
|
* @version 3.0.0
|
|
*******************************************************************************
|
|
* @section License
|
|
* <b>(C) Copyright 2012 Energy Micro AS, http://www.energymicro.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: 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 __EM_BITBAND_H
|
|
#define __EM_BITBAND_H
|
|
|
|
#include "em_part.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/***************************************************************************//**
|
|
* @addtogroup EM_Library
|
|
* @{
|
|
******************************************************************************/
|
|
|
|
/***************************************************************************//**
|
|
* @addtogroup BITBAND
|
|
* @brief BITBAND Peripheral API
|
|
* @{
|
|
******************************************************************************/
|
|
|
|
/***************************************************************************//**
|
|
* @brief
|
|
* Perform bit-band operation on peripheral memory location.
|
|
*
|
|
* @details
|
|
* Bit-banding provides atomic read-modify-write cycle for single bit
|
|
* modification. Please refer to the reference manual for further details
|
|
* about bit-banding.
|
|
*
|
|
* @param[in,out] addr Peripheral address location to modify bit in.
|
|
*
|
|
* @param[in] bit Bit position to modify, 0-31.
|
|
*
|
|
* @param[in] val Value to set bit to, 0 or 1.
|
|
******************************************************************************/
|
|
__STATIC_INLINE void BITBAND_Peripheral(volatile uint32_t *addr,
|
|
uint32_t bit,
|
|
uint32_t val)
|
|
{
|
|
uint32_t tmp = BITBAND_PER_BASE + (((uint32_t)addr - PER_MEM_BASE) * 32) + (bit * 4);
|
|
|
|
*((volatile uint32_t *)tmp) = (uint32_t)val;
|
|
}
|
|
|
|
|
|
/***************************************************************************//**
|
|
* @brief
|
|
* Perform bit-band operation on SRAM memory location.
|
|
*
|
|
* @details
|
|
* Bit-banding provides atomic read-modify-write cycle for single bit
|
|
* modification. Please refer to the reference manual for further details
|
|
* about bit-banding.
|
|
*
|
|
* @param[in,out] addr SRAM address location to modify bit in.
|
|
*
|
|
* @param[in] bit Bit position to modify, 0-31.
|
|
*
|
|
* @param[in] val Value to set bit to, 0 or 1.
|
|
******************************************************************************/
|
|
__STATIC_INLINE void BITBAND_SRAM(uint32_t *addr, uint32_t bit, uint32_t val)
|
|
{
|
|
uint32_t tmp = BITBAND_RAM_BASE + (((uint32_t)addr - RAM_MEM_BASE) * 32) + (bit * 4);
|
|
|
|
*((volatile uint32_t *)tmp) = (uint32_t)val;
|
|
}
|
|
|
|
|
|
/** @} (end addtogroup BITBAND) */
|
|
/** @} (end addtogroup EM_Library) */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __EM_BITBAND_H */
|