mirror of
https://github.com/RIOT-OS/RIOT.git
synced 2024-12-29 04:50:03 +01:00
96 lines
2.9 KiB
C
96 lines
2.9 KiB
C
/*
|
|
* Copyright (C) 2020 ML!PA Consulting GmbH
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU Lesser
|
|
* General Public License v2.1. See the file LICENSE in the top level
|
|
* directory for more details.
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* @ingroup drivers_mtd_at25xxx
|
|
* @{
|
|
*
|
|
* @file
|
|
* @brief MTD wrapper for AT25XXX based SPI EEPROMs (like AT25xxx, M95xxx, 25AAxxx, 25LCxxx,
|
|
* CAT25xxx & BR25Sxxx)
|
|
*
|
|
* @author Johannes Koster <johannes.koster@ml-pa.com>
|
|
*
|
|
* @}
|
|
*/
|
|
#define ENABLE_DEBUG 0
|
|
#include "debug.h"
|
|
#include "mtd.h"
|
|
#include "at25xxx/mtd.h"
|
|
#include "at25xxx.h"
|
|
#include "at25xxx_params.h"
|
|
|
|
#include <inttypes.h>
|
|
#include <errno.h>
|
|
|
|
static int mtd_at25xxx_init(mtd_dev_t *dev)
|
|
{
|
|
DEBUG("[mtd_at25xxx] initializing\n");
|
|
mtd_at25xxx_t *mtd_at25xxx = (mtd_at25xxx_t*)dev;
|
|
if (at25xxx_init(mtd_at25xxx->at25xxx_eeprom, mtd_at25xxx->params) == 0)
|
|
{
|
|
dev->pages_per_sector = 1;
|
|
dev->page_size = mtd_at25xxx->params->page_size;
|
|
dev->sector_count = mtd_at25xxx->params->size / mtd_at25xxx->params->page_size;
|
|
dev->write_size = 1;
|
|
return 0;
|
|
}
|
|
return -EIO;
|
|
}
|
|
|
|
static int mtd_at25xxx_read(mtd_dev_t *dev, void *buff, uint32_t addr, uint32_t size)
|
|
{
|
|
DEBUG("[mtd_at25xxx] read: addr:%" PRIu32 " size:%" PRIu32 "\n", addr, size);
|
|
mtd_at25xxx_t *mtd_at25xxx_ = (mtd_at25xxx_t*)dev;
|
|
return at25xxx_read(mtd_at25xxx_->at25xxx_eeprom, addr, buff, size);
|
|
}
|
|
|
|
static int mtd_at25xxx_write(mtd_dev_t *dev, const void *buff, uint32_t addr, uint32_t size)
|
|
{
|
|
DEBUG("[mtd_at25xxx] write: addr:%" PRIu32 " size:%" PRIu32 "\n", addr, size);
|
|
mtd_at25xxx_t *mtd_at25xxx_ = (mtd_at25xxx_t*)dev;
|
|
return at25xxx_write(mtd_at25xxx_->at25xxx_eeprom, addr, buff, size);
|
|
}
|
|
|
|
static int mtd_at25xxx_write_page(mtd_dev_t *dev, const void *src, uint32_t page, uint32_t offset,
|
|
uint32_t size)
|
|
{
|
|
DEBUG("[mtd_at25xxx] write_page: page:%" PRIu32 " offset:%" PRIu32 " size:%" PRIu32 "\n",
|
|
page, offset, size);
|
|
mtd_at25xxx_t *mtd_at25xxx_ = (mtd_at25xxx_t*)dev;
|
|
return at25xxx_write_page(mtd_at25xxx_->at25xxx_eeprom, page, offset, src, size);
|
|
}
|
|
|
|
static int mtd_at25xxx_erase(mtd_dev_t *dev, uint32_t addr, uint32_t size)
|
|
{
|
|
DEBUG("[mtd_at25xxx] mtd_at25xxx_erase: addr:%" PRIu32 " size:%" PRIu32 "\n", addr, size);
|
|
mtd_at25xxx_t *mtd_at25xxx_ = (mtd_at25xxx_t*)dev;
|
|
return at25xxx_clear(mtd_at25xxx_->at25xxx_eeprom, addr, size);
|
|
}
|
|
|
|
static int mtd_at25xxx_power(mtd_dev_t *dev, enum mtd_power_state power)
|
|
{
|
|
(void)dev;
|
|
(void)power;
|
|
|
|
/* TODO: implement power down/up of EEPROM (at25xxx driver?)
|
|
*/
|
|
return -ENOTSUP; /* currently not supported */
|
|
}
|
|
|
|
const mtd_desc_t mtd_at25xxx_driver = {
|
|
.init = mtd_at25xxx_init,
|
|
.read = mtd_at25xxx_read,
|
|
.write = mtd_at25xxx_write,
|
|
.write_page = mtd_at25xxx_write_page,
|
|
.erase = mtd_at25xxx_erase,
|
|
.power = mtd_at25xxx_power,
|
|
.flags = MTD_DRIVER_FLAG_DIRECT_WRITE,
|
|
};
|