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55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
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/*! \file spieeprom.h \brief Interface for standard SPI EEPROM memories. */
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//*****************************************************************************
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//
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// File Name : 'spieeprom.h'
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// Title : Interface for standard SPI EEPROM memories
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// Author : Pascal Stang - Copyright (C) 2004
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// Created : 2004.10.07
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// Revised : 2004.10.07
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// Version : 0.1
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// Target MCU : Atmel AVR series
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// Editor Tabs : 4
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//
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// This code is distributed under the GNU Public License
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// which can be found at http://www.gnu.org/licenses/gpl.txt
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//
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//*****************************************************************************
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#ifndef SPIEEPROM_H
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#define SPIEEPROM_H
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#include "global.h"
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// defines and constants
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// commands
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#define SPIEEPROM_CMD_READ 0x03 //< Read byte(s)
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#define SPIEEPROM_CMD_WRITE 0x02 //< Write byte(s)
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#define SPIEEPROM_CMD_WREN 0x06 //< Write Enable
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#define SPIEEPROM_CMD_WRDI 0x04 //< Write Disable
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#define SPIEEPROM_CMD_RDSR 0x05 //< Read Status Register
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#define SPIEEPROM_CMD_WRSR 0x01 //< Write Status Register
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// status register bit defines
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#define SPIEEPROM_STATUS_WIP 0x01 //< Write in progress
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#define SPIEEPROM_STATUS_WEL 0x01 //< Write enable
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#define SPIEEPROM_STATUS_BP0 0x01 //< Block Proection 0
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#define SPIEEPROM_STATUS_BP1 0x01 //< Block Proection 1
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#define SPIEEPROM_STATUS_WPEN 0x01 //< Write Protect Enable
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// functions
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//! Initialize SPI EEPROM interface
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void spieepromInit(void);
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//! In the SPI EEPROM read a byte from memory location [memAddr]
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u08 spieepromReadByte(u32 memAddr);
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//! In the SPI EEPROM write a byte [data] to the memory location [memAddr]
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void spieepromWriteByte(u32 memAddr, u08 data);
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void spieepromWriteEnable(void);
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void spieepromWriteDisable(void);
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u08 spieepromReadStatus(void);
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#endif
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