2013-01-08 22:40:58 +08:00
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//*****************************************************************************
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//
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// eeprom.h - Prototypes for the EEPROM driver.
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//
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// Copyright (c) 2010-2011 Texas Instruments Incorporated. All rights reserved.
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// Software License Agreement
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//
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// Texas Instruments (TI) is supplying this software for use solely and
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// exclusively on TI's microcontroller products. The software is owned by
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// TI and/or its suppliers, and is protected under applicable copyright
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// laws. You may not combine this software with "viral" open-source
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// software in order to form a larger program.
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//
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// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
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// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
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// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
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// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
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// DAMAGES, FOR ANY REASON WHATSOEVER.
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//
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// This is part of revision 8264 of the Stellaris Peripheral Driver Library.
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//
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//*****************************************************************************
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#ifndef __EEPROM_H__
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#define __EEPROM_H__
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//*****************************************************************************
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//
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// If building with a C++ compiler, make all of the definitions in this header
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// have a C binding.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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//*****************************************************************************
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//
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//! \addtogroup eeprom_api
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//! @{
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//
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//*****************************************************************************
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//*****************************************************************************
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//
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// Values returned by EEPROMInit.
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//
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//*****************************************************************************
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//
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//! This value may be returned from a call to EEPROMInit(). It indicates that
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//! no previous write operations were interrupted by a reset event and that the
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//! EEPROM peripheral is ready for use.
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//
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#define EEPROM_INIT_OK 0
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//
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//! This value may be returned from a call to EEPROMInit(). It indicates that
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//! a previous data or protection write operation was interrupted by a reset
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//! event. The EEPROM peripheral has recovered its state but the last write
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//! operation may have been lost. The application must check the validity of
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//! data it has written and retry any writes as required.
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//
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#define EEPROM_INIT_RETRY 1
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//
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//! This value may be returned from a call to EEPROMInit(). It indicates that a
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//! previous data or protection write operation was interrupted by a reset
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//! event and that the EEPROM peripheral was unable to clean up after the
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//! problem. This situation may be resolved with another reset or may be fatal
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//! depending upon the cause of the problem. For example, if the voltage to
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//! the part is unstable, retrying once the voltage has stabilized may clear
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//! the error.
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//
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#define EEPROM_INIT_ERROR 2
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//*****************************************************************************
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//
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// Error indicators returned by various EEPROM API calls. These will be ORed
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// together into the final return code.
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//
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//*****************************************************************************
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//
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//! This return code bit indicates that the EEPROM programming state machine
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//! failed to write a value due to the voltage level dropping below that
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//! required for EEPROM programming. The operation may be retried once the
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//! voltage stabilizes.
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//
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#define EEPROM_RC_INVPL 0x00000100
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//
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//! This return code bit indicates that an attempt was made to read from
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//! the EEPROM while a write operation was in progress.
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//
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#define EEPROM_RC_WRBUSY 0x00000020
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//
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//! This return code bit indicates that an attempt was made to write a
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//! value but the destination permissions disallow write operations. This
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//! may be due to the destination block being locked, access protection set
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//! to prohibit writes or an attempt to write a password when one is already
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//! written.
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//
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#define EEPROM_RC_NOPERM 0x00000010
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//
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//! This return code bit indicates that the EEPROM programming state machine
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//! is currently copying to or from the internal copy buffer to make room for
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//! a newly written value. It is provided as a status indicator and does not
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//! indicate an error.
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//
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#define EEPROM_RC_WKCOPY 0x00000008
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//
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//! This return code bit indicates that the EEPROM programming state machine
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//! is currently erasing the internal copy buffer. It is provided as a
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//! status indicator and does not indicate an error.
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//
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#define EEPROM_RC_WKERASE 0x00000004
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//
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//! This return code bit indicates that the EEPROM programming state machine
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//! is currently working. No new write operations should be attempted until
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//! this bit is clear.
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//
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#define EEPROM_RC_WORKING 0x00000001
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//*****************************************************************************
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//
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// Values that can be passed to EEPROMBlockProtectSet() in the ulProtect
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// parameter, and returned by EEPROMBlockProtectGet().
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//
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//*****************************************************************************
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//
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//! This bit may be ORed with the protection option passed to
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//! EEPROMBlockProtectSet() or returned from EEPROMBlockProtectGet(). It
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//! restricts EEPROM access to threads running in supervisor mode and prevents
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//! access to an EEPROM block when the CPU is in user mode.
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//
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#define EEPROM_PROT_SUPERVISOR_ONLY 0x00000008
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//
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//! This value may be passed to EEPROMBlockProtectSet() or returned from
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//! EEPROMBlockProtectGet(). It indicates that the block should offer
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//! read/write access when no password is set or when a password is set and
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//! the block is unlocked, and read-only access when a password is set but
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//! the block is locked.
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//
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#define EEPROM_PROT_RW_LRO_URW 0x00000000
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//
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//! This value may be passed to EEPROMBlockProtectSet() or returned from
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//! EEPROMBlockProtectGet(). It indicates that the block should offer neither
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//! read nor write access unless it is protected by a password and unlocked.
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//
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#define EEPROM_PROT_NA_LNA_URW 0x00000001
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//
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//! This value may be passed to EEPROMBlockProtectSet() or returned from
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//! EEPROMBlockProtectGet(). It indicates that the block should offer
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//! read-only access when no password is set or when a password is set and the
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//! block is unlocked. When a password is set and the block is locked, neither
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//! read nor write access is permitted.
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//
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#define EEPROM_PROT_RO_LNA_URO 0x00000002
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//*****************************************************************************
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//
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//! This value may be passed to EEPROMIntEnable() and EEPROMIntDisable() and is
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//! returned by EEPROMIntStatus() if an EEPROM interrupt is currently being
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//! signaled.
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//
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//*****************************************************************************
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#define EEPROM_INT_PROGRAM 0x00000004
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//*****************************************************************************
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//
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//! Returns the EEPROM block number containing a given offset address.
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//!
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//! \param ulAddr is the linear, byte address of the EEPROM location whose
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//! block number is to be returned. This is a zero-based offset from the start
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//! of the EEPROM storage.
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//!
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//! This macro may be used to translate an EEPROM address offset into a
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//! block number suitable for use in any of the driver's block protection
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//! functions. The address provided is expressed as a byte offset from the
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//! base of the EEPROM.
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//!
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//! \return Returns the zero-based block number which contains the passed
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//! address.
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//
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//*****************************************************************************
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#define EEPROMBlockFromAddr(ulAddr) ((ulAddr) >> 6)
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//*****************************************************************************
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//
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//! Returns the offset address of the first word in an EEPROM block.
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//!
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//! \param ulBlock is the index of the EEPROM block whose first word address
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//! is to be returned.
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//!
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//! This macro may be used to determine the address of the first word in a
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//! given EEPROM block. The address returned is expressed as a byte offset
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//! from the base of EEPROM storage.
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//!
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//! \return Returns the address of the first word in the given EEPROM block.
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//
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//*****************************************************************************
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#define EEPROMAddrFromBlock(ulBlock) ((ulBlock) << 6)
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//*****************************************************************************
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//
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// Prototypes for the APIs.
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//
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//*****************************************************************************
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extern unsigned long EEPROMInit(void);
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extern unsigned long EEPROMSizeGet(void);
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extern unsigned long EEPROMBlockCountGet(void);
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extern void EEPROMRead(unsigned long *pulData, unsigned long ulAddress,
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unsigned long ulCount);
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extern unsigned long EEPROMProgram(unsigned long *pulData,
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unsigned long ulAddress,
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unsigned long ulCount);
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extern unsigned long EEPROMProgramNonBlocking(unsigned long ulData,
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unsigned long ulAddress);
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extern unsigned long EEPROMStatusGet(void);
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extern unsigned long EEPROMMassErase(void);
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extern unsigned long EEPROMBlockProtectGet(unsigned long ulBlock);
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extern unsigned long EEPROMBlockProtectSet(unsigned long ulBlock,
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unsigned long ulProtect);
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extern unsigned long EEPROMBlockPasswordSet(unsigned long ulBlock,
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unsigned long *pulPassword,
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unsigned long ulCount);
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extern unsigned long EEPROMBlockLock(unsigned long ulBlock);
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extern unsigned long EEPROMBlockUnlock(unsigned long ulBlock,
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unsigned long *pulPassword,
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unsigned long ulCount);
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extern void EEPROMBlockHide(unsigned long ulBlock);
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extern void EEPROMIntEnable(unsigned long ulIntFlags);
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extern void EEPROMIntDisable(unsigned long ulIntFlags);
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extern unsigned long EEPROMIntStatus(tBoolean bMasked);
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extern void EEPROMIntClear(unsigned long ulIntFlags);
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//*****************************************************************************
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//
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// Close the Doxygen group.
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//! @}
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//
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//*****************************************************************************
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//*****************************************************************************
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//
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// Mark the end of the C bindings section for C++ compilers.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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}
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#endif
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#endif // __EEPROM_H__
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