193 lines
7.2 KiB
C
193 lines
7.2 KiB
C
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/***************************************************************************//**
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* @file
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* @brief On-board Flash controller module peripheral API for EFM32
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* devices.
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* @author Energy Micro AS
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* @version 1.3.0
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*******************************************************************************
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* @section License
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* <b>(C) Copyright 2010 Energy Micro AS, http://www.energymicro.com</b>
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*******************************************************************************
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*
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* This source code is the property of Energy Micro AS. The source and compiled
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* code may only be used on Energy Micro "EFM32" microcontrollers.
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*
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* This copyright notice may not be removed from the source code nor changed.
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*
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* DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Energy Micro AS has no
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* obligation to support this Software. Energy Micro AS is providing the
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* Software "AS IS", with no express or implied warranties of any kind,
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* including, but not limited to, any implied warranties of merchantability
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* or fitness for any particular purpose or warranties against infringement
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* of any proprietary rights of a third party.
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*
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* Energy Micro AS will not be liable for any consequential, incidental, or
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* special damages, or any other relief, or for any claim by any third party,
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* arising from your use of this Software.
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*
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******************************************************************************/
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#ifndef __EFM32_MSC_H
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#define __EFM32_MSC_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "efm32.h"
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#include "core_cm3.h"
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#include <stdint.h>
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/***************************************************************************//**
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* @addtogroup EFM32_Library
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* @{
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******************************************************************************/
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/***************************************************************************//**
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* @addtogroup MSC
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* @brief EFM32 Flash controller utilities.
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* @{
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******************************************************************************/
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/*******************************************************************************
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************************* DEFINES *****************************************
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******************************************************************************/
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/**
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* @brief
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* The timeout used while waiting for the flash to become ready after
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* a write. This number indicates the number of iterations to perform before
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* issuing a timeout.
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* @note
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* This timeout is set very large (in the order of 100x longer than
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* necessary). This is to avoid any corner cases.
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*
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*/
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#define MSC_PROGRAM_TIMEOUT 10000000ul
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/*******************************************************************************
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************************* TYPEDEFS ****************************************
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******************************************************************************/
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/** Return codes for writing/erasing the flash */
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typedef enum
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{
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mscReturnOk = 0, /**< Flash write/erase successful. */
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mscReturnInvalidAddr = -1, /**< Invalid address. Write to an address that is not flash. */
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mscReturnLocked = -2, /**< Flash address is locked. */
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mscReturnTimeOut = -3, /**< Timeout while writing to flash. */
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mscReturnUnaligned = -4 /**< Unaligned access to flash. */
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} msc_Return_TypeDef;
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/*******************************************************************************
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************************* PROTOTYPES **************************************
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******************************************************************************/
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void MSC_Deinit(void);
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void MSC_Init(void);
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/***************************************************************************//**
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* @brief
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* Clear one or more pending MSC interrupts.
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*
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* @param[in] flags
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* Pending MSC intterupt source to clear. Use a logical OR combination of
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* valid interrupt flags for the MSC module (MSC_IF_nnn).
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******************************************************************************/
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static __INLINE void MSC_IntClear(uint32_t flags)
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{
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MSC->IFC = flags;
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}
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/***************************************************************************//**
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* @brief
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* Disable one or more MSC interrupts.
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*
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* @param[in] flags
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* MSC interrupt sources to disable. Use a logical OR combination of
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* valid interrupt flags for the MSC module (MSC_IF_nnn).
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******************************************************************************/
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static __INLINE void MSC_IntDisable(uint32_t flags)
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{
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MSC->IEN &= ~(flags);
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}
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/***************************************************************************//**
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* @brief
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* Enable one or more MSC interrupts.
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*
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* @note
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* Depending on the use, a pending interrupt may already be set prior to
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* enabling the interrupt. Consider using MSC_IntClear() prior to enabling
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* if such a pending interrupt should be ignored.
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*
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* @param[in] flags
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* MSC interrupt sources to enable. Use a logical OR combination of
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* valid interrupt flags for the MSC module (MSC_IF_nnn).
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******************************************************************************/
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static __INLINE void MSC_IntEnable(uint32_t flags)
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{
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MSC->IEN |= flags;
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}
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/***************************************************************************//**
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* @brief
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* Get pending MSV interrupt flags.
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*
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* @note
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* The event bits are not cleared by the use of this function.
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*
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* @return
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* MSC interrupt sources pending. A logical OR combination of valid
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* interrupt flags for the MSC module (MSC_IF_nnn).
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******************************************************************************/
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static __INLINE uint32_t MSC_IntGet(void)
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{
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return(MSC->IF);
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}
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/***************************************************************************//**
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* @brief
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* Set one or more pending MSC interrupts from SW.
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*
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* @param[in] flags
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* MSC interrupt sources to set to pending. Use a logical OR combination of
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* valid interrupt flags for the MSC module (MSC_IF_nnn).
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******************************************************************************/
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static __INLINE void MSC_IntSet(uint32_t flags)
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{
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MSC->IFS = flags;
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}
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#ifdef __CC_ARM /* MDK-ARM compiler */
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msc_Return_TypeDef MSC_WriteWord(uint32_t *address, void *data, int numBytes);
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msc_Return_TypeDef MSC_ErasePage(uint32_t *startAddress);
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#endif /* __CC_ARM */
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#ifdef __ICCARM__ /* IAR compiler */
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__ramfunc msc_Return_TypeDef MSC_WriteWord(uint32_t *address, void *data, int numBytes);
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__ramfunc msc_Return_TypeDef MSC_ErasePage(uint32_t *startAddress);
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#endif /* __ICCARM__ */
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#ifdef __GNUC__ /* GCC based compilers */
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#ifdef __CROSSWORKS_ARM /* Rowley Crossworks */
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msc_Return_TypeDef MSC_WriteWord(uint32_t *address, void *data, int numBytes) __attribute__ ((section(".fast")));
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msc_Return_TypeDef MSC_ErasePage(uint32_t *startAddress) __attribute__ ((section(".fast")));
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#else /* Sourcery G++ */
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msc_Return_TypeDef MSC_WriteWord(uint32_t *address, void *data, int numBytes) __attribute__ ((section(".ram")));
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msc_Return_TypeDef MSC_ErasePage(uint32_t *startAddress) __attribute__ ((section(".ram")));
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#endif /* __GNUC__ */
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#endif /* __CROSSWORKS_ARM */
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/** @} (end addtogroup MSC) */
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/** @} (end addtogroup EFM32_Library) */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __EFM32_MSC_H */
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