diff options
Diffstat (limited to 'ext/fsfat/diskio.c')
| -rw-r--r-- | ext/fsfat/diskio.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/ext/fsfat/diskio.c b/ext/fsfat/diskio.c new file mode 100644 index 0000000..026ffd2 --- /dev/null +++ b/ext/fsfat/diskio.c @@ -0,0 +1,141 @@ +/*-----------------------------------------------------------------------*/
+/* Low level disk I/O module SKELETON for FatFs (C)ChaN, 2019 */
+/*-----------------------------------------------------------------------*/
+/* If a working storage control module is available, it should be */
+/* attached to the FatFs via a glue function rather than modifying it. */
+/* This is an example of glue functions to attach various exsisting */
+/* storage control modules to the FatFs module with a defined API. */
+/*-----------------------------------------------------------------------*/
+
+#include "ff.h" /* Obtains integer types */
+#include "diskio.h" /* Declarations of disk functions */
+
+#include <eos/sdcard.h>
+
+#define TIMEOUT 1000
+#define TIMEOUT_TRIM 60000
+
+/*-----------------------------------------------------------------------*/
+/* Get Drive Status */
+/*-----------------------------------------------------------------------*/
+
+DSTATUS disk_status (
+ BYTE pdrv /* Physical drive nmuber to identify the drive */
+)
+{
+ if (pdrv || (eos_sdc_type() == 0)) return STA_NOINIT;
+ return 0;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Inidialize a Drive */
+/*-----------------------------------------------------------------------*/
+
+DSTATUS disk_initialize (
+ BYTE pdrv /* Physical drive nmuber to identify the drive */
+)
+{
+ if (pdrv || (eos_sdc_type() == 0)) return STA_NOINIT;
+ return 0;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Read Sector(s) */
+/*-----------------------------------------------------------------------*/
+
+DRESULT disk_read (
+ BYTE pdrv, /* Physical drive nmuber to identify the drive */
+ BYTE *buff, /* Data buffer to store read data */
+ LBA_t sector, /* Start sector in LBA */
+ UINT count /* Number of sectors to read */
+)
+{
+ int rv;
+
+ if (pdrv) return RES_PARERR;
+ if (eos_sdc_type() == 0) return RES_NOTRDY;
+
+ rv = eos_sdc_sect_read(sector, count, (uint8_t *)buff);
+ return rv ? RES_ERROR : RES_OK;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Write Sector(s) */
+/*-----------------------------------------------------------------------*/
+
+#if FF_FS_READONLY == 0
+
+DRESULT disk_write (
+ BYTE pdrv, /* Physical drive nmuber to identify the drive */
+ const BYTE *buff, /* Data to be written */
+ LBA_t sector, /* Start sector in LBA */
+ UINT count /* Number of sectors to write */
+)
+{
+ int rv;
+
+ if (pdrv) return RES_PARERR;
+ if (eos_sdc_type() == 0) return RES_NOTRDY;
+
+ rv = eos_sdc_sect_write(sector, count, (uint8_t *)buff);
+ return rv ? RES_ERROR : RES_OK;
+}
+
+#endif
+
+
+/*-----------------------------------------------------------------------*/
+/* Miscellaneous Functions */
+/*-----------------------------------------------------------------------*/
+
+DRESULT disk_ioctl (
+ BYTE pdrv, /* Physical drive nmuber (0..) */
+ BYTE cmd, /* Control code */
+ void *buff /* Buffer to send/receive control data */
+)
+{
+ DRESULT res;
+ uint32_t ret;
+ int rv;
+
+ if (pdrv) return RES_PARERR;
+ if (eos_sdc_type() == 0) return RES_NOTRDY;
+
+ res = RES_ERROR;
+
+ switch (cmd) {
+ case CTRL_SYNC:
+ rv = eos_sdc_sync(TIMEOUT);
+ if (!rv) res = RES_OK;
+ break;
+
+ case GET_SECTOR_COUNT:
+ rv = eos_sdc_get_sect_count(TIMEOUT, &ret);
+ if (!rv) {
+ *(LBA_t*)buff = ret;
+ res = RES_OK;
+ }
+ break;
+
+ case GET_BLOCK_SIZE:
+ rv = eos_sdc_get_blk_size(TIMEOUT, &ret);
+ if (!rv) {
+ *(DWORD*)buff = ret;
+ res = RES_OK;
+ }
+ break;
+
+ case CTRL_TRIM:
+ rv = eos_sdc_erase(((LBA_t*)buff)[0], ((LBA_t*)buff)[1], TIMEOUT_TRIM);
+ if (!rv) res = RES_OK;
+ break;
+ }
+
+ return res;
+}
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