mirror of
https://github.com/eledio-devices/thirdparty-littlefs.git
synced 2025-10-31 16:14:16 +01:00
7050922623
This adds caching of the most recent read/program blocks, allowing support of devices that don't have byte-level read+writes, along with reduced device access on devices that do support byte-level read+writes. Note: The current implementation is a bit eager to drop caches where it simplifies the cache layer. This layer is already complex enough. Note: It may be worthwhile to add a compile switch for caching to reduce code size, note sure. Note: This does add a dependency on malloc, which could have a porting layer, but I'm just using the functions from stdlib for now. These can be overwritten with noops if the user controls the system, and keeps things simple for now.
95 lines
1.7 KiB
Plaintext
95 lines
1.7 KiB
Plaintext
/// AUTOGENERATED TEST ///
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#include "lfs.h"
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#include "emubd/lfs_emubd.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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// test stuff
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void test_log(const char *s, uintmax_t v) {{
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printf("%s: %jd\n", s, v);
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}}
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void test_assert(const char *file, unsigned line,
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const char *s, uintmax_t v, uintmax_t e) {{
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static const char *last[2] = {{0, 0}};
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if (v != e || !(last[0] == s || last[1] == s)) {{
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test_log(s, v);
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last[0] = last[1];
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last[1] = s;
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}}
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if (v != e) {{
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printf("\033[31m%s:%u: assert %s failed, expected %jd\033[0m\n",
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file, line, s, e);
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exit(-2);
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}}
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}}
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#define test_assert(s, v, e) test_assert(__FILE__, __LINE__, s, v, e)
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// utility functions for traversals
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int test_count(void *p, lfs_block_t b) {{
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unsigned *u = (unsigned*)p;
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*u += 1;
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return 0;
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}}
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// lfs declarations
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lfs_t lfs;
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lfs_emubd_t bd;
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lfs_file_t file[4];
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lfs_dir_t dir[4];
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struct lfs_info info;
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uint8_t buffer[1024];
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uint8_t wbuffer[1024];
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uint8_t rbuffer[1024];
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lfs_size_t size;
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lfs_size_t wsize;
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lfs_size_t rsize;
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uintmax_t res;
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#ifndef LFS_READ_SIZE
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#define LFS_READ_SIZE 64
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#endif
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#ifndef LFS_PROG_SIZE
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#define LFS_PROG_SIZE 64
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#endif
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#ifndef LFS_BLOCK_SIZE
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#define LFS_BLOCK_SIZE 512
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#endif
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#ifndef LFS_BLOCK_COUNT
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#define LFS_BLOCK_COUNT 1024
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#endif
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const struct lfs_config cfg = {{
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.context = &bd,
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.read = &lfs_emubd_read,
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.prog = &lfs_emubd_prog,
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.erase = &lfs_emubd_erase,
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.sync = &lfs_emubd_sync,
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.read_size = LFS_READ_SIZE,
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.prog_size = LFS_PROG_SIZE,
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.block_size = LFS_BLOCK_SIZE,
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.block_count = LFS_BLOCK_COUNT,
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}};
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// Entry point
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int main() {{
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lfs_emubd_create(&cfg, "blocks");
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{tests}
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lfs_emubd_destroy(&cfg);
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}}
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