81 lines
3.5 KiB
C
81 lines
3.5 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef MICROPY_INCLUDED_STM32_STORAGE_H
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#define MICROPY_INCLUDED_STM32_STORAGE_H
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#include "drivers/memory/spiflash.h"
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#define FLASH_BLOCK_SIZE (512)
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#define FLASH_PART1_START_BLOCK (0x100)
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// Try to match Python-level VFS block protocol where possible for these constants
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enum {
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BDEV_IOCTL_INIT = 1,
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BDEV_IOCTL_SYNC = 3,
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BDEV_IOCTL_NUM_BLOCKS = 4,
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BDEV_IOCTL_BLOCK_ERASE = 6,
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BDEV_IOCTL_IRQ_HANDLER = 7,
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};
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void storage_init(void);
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uint32_t storage_get_block_size(void);
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uint32_t storage_get_block_count(void);
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void storage_flush(void);
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bool storage_read_block(uint8_t *dest, uint32_t block);
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bool storage_write_block(const uint8_t *src, uint32_t block);
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// these return 0 on success, negative errno on error
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int storage_read_blocks(uint8_t *dest, uint32_t block_num, uint32_t num_blocks);
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int storage_write_blocks(const uint8_t *src, uint32_t block_num, uint32_t num_blocks);
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int storage_readblocks_ext(uint8_t *dest, uint32_t block, uint32_t offset, uint32_t len);
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int32_t flash_bdev_ioctl(uint32_t op, uint32_t arg);
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bool flash_bdev_readblock(uint8_t *dest, uint32_t block);
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bool flash_bdev_writeblock(const uint8_t *src, uint32_t block);
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int flash_bdev_readblocks_ext(uint8_t *dest, uint32_t block, uint32_t offset, uint32_t len);
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int flash_bdev_writeblocks_ext(const uint8_t *src, uint32_t block, uint32_t offset, uint32_t len);
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typedef struct _spi_bdev_t {
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mp_spiflash_t spiflash;
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uint32_t flash_tick_counter_last_write;
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} spi_bdev_t;
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int32_t spi_bdev_ioctl(spi_bdev_t *bdev, uint32_t op, uint32_t arg);
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int spi_bdev_readblocks(spi_bdev_t *bdev, uint8_t *dest, uint32_t block_num, uint32_t num_blocks);
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int spi_bdev_writeblocks(spi_bdev_t *bdev, const uint8_t *src, uint32_t block_num, uint32_t num_blocks);
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// These raw functions bypass the cache and go directly to SPI flash
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int spi_bdev_readblocks_raw(spi_bdev_t *bdev, uint8_t *dest, uint32_t block_num, uint32_t block_offset, uint32_t num_bytes);
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int spi_bdev_writeblocks_raw(spi_bdev_t *bdev, const uint8_t *src, uint32_t block_num, uint32_t block_offset, uint32_t num_bytes);
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extern const struct _mp_obj_type_t pyb_flash_type;
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extern const struct _pyb_flash_obj_t pyb_flash_obj;
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struct _fs_user_mount_t;
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void pyb_flash_init_vfs(struct _fs_user_mount_t *vfs);
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#endif // MICROPY_INCLUDED_STM32_STORAGE_H
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