280 lines
12 KiB
C
280 lines
12 KiB
C
//*****************************************************************************
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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) 2010-2013 Texas Instruments Incorporated. All rights reserved.
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// Software License Agreement
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the
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// distribution.
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//
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// Neither the name of Texas Instruments Incorporated nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// This is part of revision 1.1 of the Tiva Peripheral Driver Library.
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//
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//*****************************************************************************
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#ifndef __DRIVERLIB_EEPROM_H__
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#define __DRIVERLIB_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
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//! a 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 ui32Protect
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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 ui32Addr 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(ui32Addr) ((ui32Addr) >> 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 ui32Block 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(ui32Block) ((ui32Block) << 6)
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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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// Prototypes for the APIs.
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//
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//*****************************************************************************
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extern uint32_t EEPROMInit(void);
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extern uint32_t EEPROMSizeGet(void);
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extern uint32_t EEPROMBlockCountGet(void);
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extern void EEPROMRead(uint32_t *pui32Data, uint32_t ui32Address,
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uint32_t ui32Count);
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extern uint32_t EEPROMProgram(uint32_t *pui32Data,
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uint32_t ui32Address,
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uint32_t ui32Count);
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extern uint32_t EEPROMProgramNonBlocking(uint32_t ui32Data,
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uint32_t ui32Address);
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extern uint32_t EEPROMStatusGet(void);
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extern uint32_t EEPROMMassErase(void);
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extern uint32_t EEPROMBlockProtectGet(uint32_t ui32Block);
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extern uint32_t EEPROMBlockProtectSet(uint32_t ui32Block,
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uint32_t ui32Protect);
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extern uint32_t EEPROMBlockPasswordSet(uint32_t ui32Block,
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uint32_t *pui32Password,
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uint32_t ui32Count);
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extern uint32_t EEPROMBlockLock(uint32_t ui32Block);
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extern uint32_t EEPROMBlockUnlock(uint32_t ui32Block,
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uint32_t *pui32Password,
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uint32_t ui32Count);
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extern void EEPROMBlockHide(uint32_t ui32Block);
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extern void EEPROMIntEnable(uint32_t ui32IntFlags);
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extern void EEPROMIntDisable(uint32_t ui32IntFlags);
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extern uint32_t EEPROMIntStatus(bool bMasked);
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extern void EEPROMIntClear(uint32_t ui32IntFlags);
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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 // __DRIVERLIB_EEPROM_H__
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