Add Configurable LFN support to FatFS

stm/Makefile

@@ -141,6 +141,7 @@ SRC_STMUSBH = $(addprefix $(STMUSBH_DIR)/,\
 SRC_FATFS = $(addprefix $(FATFS_DIR)/,\
 	ff.c \
 	diskio.c \
+	ccsbcs.c \
 	)
 
 SRC_CC3K = $(addprefix $(CC3K_DIR)/,\

stm/fatfs/ffconf.h

@@ -9,6 +9,7 @@
 #ifndef _FFCONF
 #define _FFCONF 80960	/* Revision ID */
 
+#include "mpconfigport.h"
 
 /*---------------------------------------------------------------------------/
 / Functions and Buffer Configurations
@@ -60,7 +61,7 @@
 / Locale and Namespace Configurations
 /----------------------------------------------------------------------------*/
 
-#define _CODE_PAGE	1
+#define _CODE_PAGE	(MICROPY_LFN_CODE_PAGE)
 /* The _CODE_PAGE specifies the OEM code page to be used on the target system.
 /  Incorrect setting of the code page can cause a file open failure.
 /
@@ -92,8 +93,7 @@
 /   1    - ASCII (Valid for only non-LFN cfg.)
 */
 
-
-#define	_USE_LFN	0		/* 0 to 3 */
+#define	_USE_LFN	(MICROPY_ENABLE_LFN)		/* 0 to 3 */
 #define	_MAX_LFN	255		/* Maximum LFN length to handle (12 to 255) */
 /* The _USE_LFN option switches the LFN feature.
 /

stm/mpconfigport.h

@@ -8,6 +8,14 @@
 #define MICROPY_ENABLE_REPL_HELPERS (1)
 #define MICROPY_ENABLE_FLOAT        (1)
 #define MICROPY_PATH_MAX            (128)
+/* Enable FatFS LFNs
+    0: Disable LFN feature.
+    1: Enable LFN with static working buffer on the BSS. Always NOT reentrant.
+    2: Enable LFN with dynamic working buffer on the STACK.
+    3: Enable LFN with dynamic working buffer on the HEAP.
+*/
+#define MICROPY_ENABLE_LFN          (0)
+#define MICROPY_LFN_CODE_PAGE       (1) /* 1=SFN/ANSI 437=LFN/U.S.(OEM) */
 
 // type definitions for the specific machine