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55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
/*
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* Copyright (C) 2018 Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup cpu_stm32_common
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* @ingroup drivers_periph_eeprom
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* @{
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*
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* @file
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* @brief Low-level eeprom driver implementation
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*
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* @author Alexandre Abadie <alexandre.abadie@inria.fr>
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*
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* @}
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*/
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#include <assert.h>
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#include "cpu.h"
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#define ENABLE_DEBUG (0)
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#include "debug.h"
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#include "periph/eeprom.h"
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extern void _lock(void);
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extern void _unlock(void);
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#ifndef EEPROM_START_ADDR
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#error "periph/eeprom: EEPROM_START_ADDR is not defined"
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#endif
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uint8_t eeprom_read_byte(uint32_t pos)
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{
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assert(pos < EEPROM_SIZE);
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DEBUG("Reading data from EEPROM at pos %lu\n", pos);
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return *(uint8_t *)(EEPROM_START_ADDR + pos);
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}
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void eeprom_write_byte(uint32_t pos, uint8_t data)
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{
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assert(pos < EEPROM_SIZE);
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DEBUG("Writing data '%c' to EEPROM at pos %lu\n", data, pos);
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_unlock();
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*(uint8_t *)(EEPROM_START_ADDR + pos) = data;
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_lock();
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}
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