104 lines
3.8 KiB
C
104 lines
3.8 KiB
C
/***************************************************************************//**
|
|
* @file
|
|
* @brief Bitband Peripheral API for EFM32
|
|
* @author Energy Micro AS
|
|
* @version 2.0.0
|
|
*******************************************************************************
|
|
* @section License
|
|
* <b>(C) Copyright 2010 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_BITBAND_H
|
|
#define __EFM32_BITBAND_H
|
|
|
|
#include "efm32.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/***************************************************************************//**
|
|
* @addtogroup EFM32_Library
|
|
* @{
|
|
******************************************************************************/
|
|
|
|
/***************************************************************************//**
|
|
* @addtogroup BITBAND
|
|
* @brief BITBAND Peripheral API for EFM32
|
|
* @{
|
|
******************************************************************************/
|
|
|
|
/***************************************************************************//**
|
|
* @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 EFM32_Library) */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __EFM32_BITBAND_H */
|