76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
#ifndef LFS_FLASHBD_H
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#define LFS_FLASHBD_H
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#include "lfs.h"
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#include "lfs_util.h"
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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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// Block device specific tracing
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#ifdef LFS_FLASHBD_YES_TRACE
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#define LFS_FLASHBD_TRACE(...) LFS_TRACE(__VA_ARGS__)
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#else
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#define LFS_FLASHBD_TRACE(...)
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#endif
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// flashbd config (optional)
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struct lfs_flashbd_config {
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// 8-bit erase value to simulate erasing with. -1 indicates no erase
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// occurs, which is still a valid block device
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int32_t erase_value;
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};
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// flashbd state
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typedef struct lfs_flashbd {
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uint32_t start_addr;
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uint32_t end_addr;
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const struct lfs_flashbd_config *cfg;
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} lfs_flashbd_t;
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// Create a flash block device using the geometry in lfs_config
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int lfs_flashbd_create(const struct lfs_config *cfg);
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int lfs_flashbd_createcfg(const struct lfs_config *cfg,
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const struct lfs_flashbd_config *bdcfg);
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// Clean up memory associated with block device
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int lfs_flashbd_destroy(const struct lfs_config *cfg);
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// Read a block
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int lfs_flashbd_read(const struct lfs_config *cfg, lfs_block_t block,
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lfs_off_t off, void *buffer, lfs_size_t size);
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// Program a block
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//
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// The block must have previously been erased.
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int lfs_flashbd_prog(const struct lfs_config *cfg, lfs_block_t block,
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lfs_off_t off, const void *buffer, lfs_size_t size);
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// Erase a block
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//
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// A block must be erased before being programmed. The
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// state of an erased block is undefined.
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int lfs_flashbd_erase(const struct lfs_config *cfg, lfs_block_t block);
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// Sync the block device
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int lfs_flashbd_sync(const struct lfs_config *cfg);
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int lfs_spi_flashbd_init(void);
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int lfs_spi_flashbd_read(const struct lfs_config *cfg, lfs_block_t block,
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lfs_off_t off, void *buffer, lfs_size_t size);
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int lfs_spi_flashbd_prog(const struct lfs_config *cfg, lfs_block_t block,
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lfs_off_t off, const void *buffer, lfs_size_t size);
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int lfs_spi_flashbd_erase(const struct lfs_config *cfg, lfs_block_t block);
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int lfs_spi_flashbd_sync(const struct lfs_config *cfg);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif
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