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Rename to sd_shim #73

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Merged
x-ximena merged 3 commits into from
Feb 1, 2026
Merged

Rename to sd_shim #73

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2d1557d
Rename to sd_shim
x-ximena Feb 1, 2026
f384877
Rename hsd and fritst block offset
x-ximena Feb 1, 2026
ac58291
Format
x-ximena Feb 1, 2026
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4 changes: 2 additions & 2 deletions include/littlefs_shim.h → include/littlefs_sd_shim.h
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Original file line number Diff line number Diff line change
Expand Up @@ -9,8 +9,8 @@ extern "C" {
#endif

// LittleFS-compatible SD card interface functions
int lfsshim_mount(lfs_t *lfs, SD_HandleTypeDef *hsd, uint32_t first_block_offset);
int lfsshim_mount_mbr(lfs_t *lfs, SD_HandleTypeDef *hsd);
int lfsshim_sd_mount(lfs_t *lfs, SD_HandleTypeDef *hsd, uint32_t first_block_offset);
int lfsshim_sd_mount_mbr(lfs_t *lfs, SD_HandleTypeDef *hsd);

#ifdef __cplusplus
}
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22 changes: 11 additions & 11 deletions stm32h7/littlefs_shim.c → stm32h7/littlefs_sd_shim.c
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,7 @@
static SD_HandleTypeDef *lfsshim_hsd;
static uint32_t lfsshim_first_block_offset = 0;
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@JasonBrave JasonBrave Feb 1, 2026

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rename this also


static int lfsshim_read(const struct lfs_config *c, lfs_block_t block, lfs_off_t off, void *buffer,
static int lfsshim_sd_read(const struct lfs_config *c, lfs_block_t block, lfs_off_t off, void *buffer,
lfs_size_t size) {
uint32_t block_addr = block + lfsshim_first_block_offset;

Expand All @@ -34,7 +34,7 @@ static int lfsshim_read(const struct lfs_config *c, lfs_block_t block, lfs_off_t
return 0; // success
}

static int lfsshim_write(const struct lfs_config *c, lfs_block_t block, lfs_off_t off,
static int lfsshim_sd_write(const struct lfs_config *c, lfs_block_t block, lfs_off_t off,
const void *buffer, lfs_size_t size) {
uint32_t block_addr = block + lfsshim_first_block_offset;

Expand All @@ -60,21 +60,21 @@ static int lfsshim_write(const struct lfs_config *c, lfs_block_t block, lfs_off_
return 0; // success
}

static int lfsshim_erase(const struct lfs_config *c, lfs_block_t block) {
static int lfsshim_sd_erase(const struct lfs_config *c, lfs_block_t block) {
return 0; // SD does not require explicit erase
}

static int lfsshim_sync(const struct lfs_config *c) {
static int lfsshim_sd_sync(const struct lfs_config *c) {
return 0;
}

// configuration of the filesystem is provided by this struct
const struct lfs_config cfg = {
// block device operations
.read = lfsshim_read,
.prog = lfsshim_write,
.erase = lfsshim_erase,
.sync = lfsshim_sync,
.read = lfsshim_sd_read,
.prog = lfsshim_sd_write,
.erase = lfsshim_sd_erase,
.sync = lfsshim_sd_sync,

// block device configuration
.read_size = 512,
Expand All @@ -91,7 +91,7 @@ const struct lfs_config cfg = {
.metadata_max = 0,
.inline_max = -1};

w_status_t lfsshim_mount(lfs_t *lfs, SD_HandleTypeDef *hsd, uint32_t first_block_offset) {
w_status_t lfsshim_sd_mount(lfs_t *lfs, SD_HandleTypeDef *hsd, uint32_t first_block_offset) {
memset(lfs, 0, sizeof(lfs_t));

lfsshim_hsd = hsd;
Expand All @@ -104,7 +104,7 @@ w_status_t lfsshim_mount(lfs_t *lfs, SD_HandleTypeDef *hsd, uint32_t first_block
return W_SUCCESS;
}

w_status_t lfsshim_mount_mbr(lfs_t *lfs, SD_HandleTypeDef *hsd) {
w_status_t lfsshim_sd_mount_mbr(lfs_t *lfs, SD_HandleTypeDef *hsd) {
uint8_t mbr_sector[512];

HAL_StatusTypeDef hal = HAL_SD_ReadBlocks(hsd, mbr_sector, 0, 1, 50U);
Expand All @@ -118,7 +118,7 @@ w_status_t lfsshim_mount_mbr(lfs_t *lfs, SD_HandleTypeDef *hsd) {
return status;
}

if (lfsshim_mount(lfs, hsd, first_block_offset) != 0) {
if (lfsshim_sd_mount(lfs, hsd, first_block_offset) != 0) {
return W_IO_ERROR;
}
return W_SUCCESS;
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