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update fatfs cached sector when running write10

This commit is contained in:
hathach 2018-07-05 17:43:38 +07:00
parent 4e5d9a029d
commit 0806c0a38b
1 changed files with 13 additions and 0 deletions
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13
ports/nrf/usb/usb_msc_flash.c
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@ -39,6 +39,12 @@
#include "tusb.h"
#include "internal_flash.h"
// For updating fatfs's cache
#include "extmod/vfs.h"
#include "extmod/vfs_fat.h"
#include "lib/oofatfs/ff.h"
#include "py/mpstate.h"
/*------------------------------------------------------------------*/
/* MACRO TYPEDEF CONSTANT ENUM
*------------------------------------------------------------------*/
@ -159,6 +165,13 @@ int32_t tud_msc_write10_cb (uint8_t rhport, uint8_t lun, uint32_t lba, uint32_t
// bufsize <= CFG_TUD_MSC_BUFSIZE (4096)
internal_flash_write_blocks(buffer, lba, block_count);
// update fatfs's cache if address matches
fs_user_mount_t* vfs = MP_STATE_VM(vfs_mount_table)->obj;
if ( (lba <= vfs->fatfs.winsect) && (vfs->fatfs.winsect <= (lba + bufsize/MSC_FLASH_BLOCK_SIZE)) ) {
memcpy(vfs->fatfs.win, buffer + MSC_FLASH_BLOCK_SIZE*(vfs->fatfs.winsect-lba), MSC_FLASH_BLOCK_SIZE);
}
return block_count*MSC_FLASH_BLOCK_SIZE;
}