FatFs R0.13c, released October 14, 2018

source/diskio.c

@@ -7,7 +7,8 @@
 /* storage control modules to the FatFs module with a defined API.       */
 /*-----------------------------------------------------------------------*/
 
-#include "diskio.h"		/* FatFs lower layer API */
+#include "ff.h"			/* Obtains integer types */
+#include "diskio.h"		/* Declarations of disk functions */
 
 /* Definitions of physical drive number for each drive */
 #define DEV_RAM		0	/* Example: Map Ramdisk to physical drive 0 */
@@ -143,6 +144,8 @@ DRESULT disk_read (
 /* 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 */
@@ -185,6 +188,7 @@ DRESULT disk_write (
 	return RES_PARERR;
 }
 
+#endif
 
 
 /*-----------------------------------------------------------------------*/