diff --git a/demos/bsp/boards/board.c b/demos/bsp/boards/board.c
index c411176d..4a423c5d 100644
--- a/demos/bsp/boards/board.c
+++ b/demos/bsp/boards/board.c
@@ -46,6 +46,7 @@ void SysTick_Handler (void)
   system_ticks++;
   tusb_tick_tock(); // TODO temporarily
 }
+
 #endif
 
 #if 0
diff --git a/demos/bsp/boards/printf_retarget.c b/demos/bsp/boards/printf_retarget.c
index 12303c89..f940836f 100644
--- a/demos/bsp/boards/printf_retarget.c
+++ b/demos/bsp/boards/printf_retarget.c
@@ -38,11 +38,19 @@
 
 #include "board.h"
 
-//-------------------------------------------------------------------- +
-//                    LPCXpresso printf redirection                    +
-//-------------------------------------------------------------------- +
 #if CFG_PRINTF_TARGET != PRINTF_TARGET_DEBUG_CONSOLE
 
+#if CFG_PRINTF_TARGET == PRINTF_TARGET_UART
+  #define retarget_getchar()  board_uart_getchar()
+#elif CFG_PRINTF_TARGET == PRINTF_TARGET_SWO
+	#define retarget_getchar()  ITM_ReceiveChar()
+#else
+	#error Target is not implemented yet
+#endif
+
+//--------------------------------------------------------------------+
+// LPCXPRESSO / RED SUITE
+//--------------------------------------------------------------------+
 #if defined __CODE_RED
 // Called by bottom level of printf routine within RedLib C library to write
 // a character. With the default semihosting stub, this would write the character
@@ -87,33 +95,20 @@ int __sys_write (int iFileHandle, char *pcBuffer, int iLength)
 // the character from the UART.
 int __sys_readc (void)
 {
-	uint8_t c;
-
-#if CFG_PRINTF_TARGET == PRINTF_TARGET_UART
-	board_uart_recv(&c, 1);
-#elif CFG_PRINTF_TARGET == PRINTF_TARGET_SWO
-	c = ITM_ReceiveChar();
-#else
-	#error Thach, did you forget something
-#endif
-
-	return (int)c;
+	return (int) retarget_getchar();
 }
 
+//--------------------------------------------------------------------+
+// KEIL
+//--------------------------------------------------------------------+
 #elif defined __CC_ARM // keil
 
 #if CFG_PRINTF_TARGET == PRINTF_TARGET_UART
   #define retarget_putc(c)    board_uart_send( (uint8_t*) &c, 1);
-  #define retarget_getchar()  board_uart_getchar()
 #elif CFG_PRINTF_TARGET == PRINTF_TARGET_SWO
 	#define retarget_putc(c)    ITM_SendChar(c)
-	#define retarget_getchar()  ITM_ReceiveChar()
-#else
-	#error Thach, did you forget something
 #endif
 
-
-
 struct __FILE {
   uint32_t handle;
 };
diff --git a/demos/host/host_os_none/.cproject b/demos/host/host_os_none/.cproject
index e7a18e70..2f9eb024 100644
--- a/demos/host/host_os_none/.cproject
+++ b/demos/host/host_os_none/.cproject
@@ -1150,6 +1150,7 @@
 								<option id="gnu.c.compiler.option.misc.other.740032111" name="Other flags" superClass="gnu.c.compiler.option.misc.other" value="-c -fmessage-length=0 -fno-builtin -ffunction-sections -fdata-sections" valueType="string"/>
 								<option id="gnu.c.compiler.option.include.paths.967143576" name="Include paths (-I)" superClass="gnu.c.compiler.option.include.paths" valueType="includePath">
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/bsp/lpc43xx/CMSIS_LPC43xx_DriverLib/inc}&quot;"/>
+									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/fatfs}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/lwip/lwip/src/include/ipv4}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/lwip/lpclwip}&quot;"/>
 									<listOptionValue builtIn="false" value="&quot;${workspace_loc:/${ProjName}/lwip/lwip/src/include}&quot;"/>
diff --git a/demos/host/host_os_none/.project b/demos/host/host_os_none/.project
index d6990784..9060e554 100644
--- a/demos/host/host_os_none/.project
+++ b/demos/host/host_os_none/.project
@@ -85,6 +85,11 @@
 			<type>2</type>
 			<locationURI>PARENT-2-PROJECT_LOC/bsp</locationURI>
 		</link>
+		<link>
+			<name>fatfs</name>
+			<type>2</type>
+			<locationURI>PARENT-3-PROJECT_LOC/vendor/fatfs</locationURI>
+		</link>
 		<link>
 			<name>lwip</name>
 			<type>2</type>
@@ -103,7 +108,7 @@
 	</linkedResources>
 	<filteredResources>
 		<filter>
-			<id>1379572492985</id>
+			<id>1380040598945</id>
 			<name></name>
 			<type>26</type>
 			<matcher>
@@ -112,7 +117,7 @@
 			</matcher>
 		</filter>
 		<filter>
-			<id>1379572492997</id>
+			<id>1380040598970</id>
 			<name></name>
 			<type>26</type>
 			<matcher>
diff --git a/demos/host/host_os_none/host_os_none.uvopt b/demos/host/host_os_none/host_os_none.uvopt
index 1dd23814..f6140d21 100644
--- a/demos/host/host_os_none/host_os_none.uvopt
+++ b/demos/host/host_os_none/host_os_none.uvopt
@@ -158,7 +158,24 @@
           <Name>-O975 -S0 -C0 -FO7 -FD10000000 -FC800 -FN2 -FF0LPC18xx43xx_512_BA -FS01A000000 -FL080000 -FF1LPC18xx43xx_512_BB -FS11B000000 -FL180000)</Name>
         </SetRegEntry>
       </TargetDriverDllRegistry>
-      <Breakpoint/>
+      <Breakpoint>
+        <Bp>
+          <Number>0</Number>
+          <Type>0</Type>
+          <LineNumber>131</LineNumber>
+          <EnabledFlag>1</EnabledFlag>
+          <Address>0</Address>
+          <ByteObject>0</ByteObject>
+          <HtxType>0</HtxType>
+          <ManyObjects>0</ManyObjects>
+          <SizeOfObject>0</SizeOfObject>
+          <BreakByAccess>0</BreakByAccess>
+          <BreakIfRCount>0</BreakIfRCount>
+          <Filename>C:\Users\hathach\Dropbox\tinyusb\workspace\tinyusb\demos\host\src\main.c</Filename>
+          <ExecCommand></ExecCommand>
+          <Expression></Expression>
+        </Bp>
+      </Breakpoint>
       <WatchWindow1>
         <Ww>
           <count>0</count>
@@ -390,7 +407,24 @@
           <Name>-O975 -S0 -C0 -FO7 -FD10000000 -FC800 -FN2 -FF0LPC18xx43xx_512_BA -FS01A000000 -FL080000 -FF1LPC18xx43xx_512_BB -FS11B000000 -FL180000)</Name>
         </SetRegEntry>
       </TargetDriverDllRegistry>
-      <Breakpoint/>
+      <Breakpoint>
+        <Bp>
+          <Number>0</Number>
+          <Type>0</Type>
+          <LineNumber>131</LineNumber>
+          <EnabledFlag>1</EnabledFlag>
+          <Address>0</Address>
+          <ByteObject>0</ByteObject>
+          <HtxType>0</HtxType>
+          <ManyObjects>0</ManyObjects>
+          <SizeOfObject>0</SizeOfObject>
+          <BreakByAccess>0</BreakByAccess>
+          <BreakIfRCount>0</BreakIfRCount>
+          <Filename>C:\Users\hathach\Dropbox\tinyusb\workspace\tinyusb\demos\host\src\main.c</Filename>
+          <ExecCommand></ExecCommand>
+          <Expression></Expression>
+        </Bp>
+      </Breakpoint>
       <WatchWindow1>
         <Ww>
           <count>0</count>
@@ -434,7 +468,7 @@
 
   <Group>
     <GroupName>app</GroupName>
-    <tvExp>1</tvExp>
+    <tvExp>0</tvExp>
     <tvExpOptDlg>0</tvExpOptDlg>
     <cbSel>0</cbSel>
     <RteFlg>0</RteFlg>
@@ -444,10 +478,10 @@
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <Focus>0</Focus>
-      <ColumnNumber>0</ColumnNumber>
+      <ColumnNumber>1</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>1</TopLine>
-      <CurrentLine>1</CurrentLine>
+      <TopLine>189</TopLine>
+      <CurrentLine>200</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\src\main.c</PathWithFileName>
       <FilenameWithoutPath>main.c</FilenameWithoutPath>
@@ -462,7 +496,7 @@
       <Focus>0</Focus>
       <ColumnNumber>0</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>127</TopLine>
+      <TopLine>94</TopLine>
       <CurrentLine>145</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\src\cdc_serial_app.c</PathWithFileName>
@@ -478,7 +512,7 @@
       <Focus>0</Focus>
       <ColumnNumber>0</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>169</TopLine>
+      <TopLine>136</TopLine>
       <CurrentLine>180</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\src\keyboard_app.c</PathWithFileName>
@@ -524,10 +558,10 @@
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <Focus>0</Focus>
-      <ColumnNumber>20</ColumnNumber>
+      <ColumnNumber>0</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
       <TopLine>1</TopLine>
-      <CurrentLine>6</CurrentLine>
+      <CurrentLine>1</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\src\msc_app.c</PathWithFileName>
       <FilenameWithoutPath>msc_app.c</FilenameWithoutPath>
@@ -540,10 +574,10 @@
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <Focus>0</Focus>
-      <ColumnNumber>2</ColumnNumber>
+      <ColumnNumber>30</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>62</TopLine>
-      <CurrentLine>72</CurrentLine>
+      <TopLine>63</TopLine>
+      <CurrentLine>75</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\src\cli.c</PathWithFileName>
       <FilenameWithoutPath>cli.c</FilenameWithoutPath>
@@ -580,10 +614,10 @@
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <Focus>0</Focus>
-      <ColumnNumber>2</ColumnNumber>
+      <ColumnNumber>0</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>0</TopLine>
-      <CurrentLine>0</CurrentLine>
+      <TopLine>136</TopLine>
+      <CurrentLine>142</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\bsp\boards\embedded_artists\board_ea4357.c</PathWithFileName>
       <FilenameWithoutPath>board_ea4357.c</FilenameWithoutPath>
@@ -596,10 +630,10 @@
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <Focus>0</Focus>
-      <ColumnNumber>0</ColumnNumber>
+      <ColumnNumber>25</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>0</TopLine>
-      <CurrentLine>0</CurrentLine>
+      <TopLine>100</TopLine>
+      <CurrentLine>132</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\bsp\boards\printf_retarget.c</PathWithFileName>
       <FilenameWithoutPath>printf_retarget.c</FilenameWithoutPath>
@@ -734,7 +768,7 @@
       <Focus>0</Focus>
       <ColumnNumber>0</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>58</TopLine>
+      <TopLine>25</TopLine>
       <CurrentLine>76</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\..\tinyusb\tusb.c</PathWithFileName>
@@ -798,7 +832,7 @@
       <Focus>0</Focus>
       <ColumnNumber>0</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>494</TopLine>
+      <TopLine>483</TopLine>
       <CurrentLine>501</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\..\tinyusb\host\usbh.c</PathWithFileName>
@@ -814,7 +848,7 @@
       <Focus>0</Focus>
       <ColumnNumber>0</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>598</TopLine>
+      <TopLine>599</TopLine>
       <CurrentLine>605</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\..\tinyusb\host\ehci\ehci.c</PathWithFileName>
@@ -974,7 +1008,7 @@
       <Focus>0</Focus>
       <ColumnNumber>47</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>2</TopLine>
+      <TopLine>3</TopLine>
       <CurrentLine>13</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\..\tinyusb\class\msc_host.c</PathWithFileName>
@@ -998,8 +1032,8 @@
       <Focus>0</Focus>
       <ColumnNumber>0</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>0</TopLine>
-      <CurrentLine>0</CurrentLine>
+      <TopLine>533</TopLine>
+      <CurrentLine>553</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\bsp\lpc43xx\CMSIS_LPC43xx_DriverLib\src\lpc43xx_uart.c</PathWithFileName>
       <FilenameWithoutPath>lpc43xx_uart.c</FilenameWithoutPath>
@@ -1090,7 +1124,7 @@
 
   <Group>
     <GroupName>startup</GroupName>
-    <tvExp>1</tvExp>
+    <tvExp>0</tvExp>
     <tvExpOptDlg>0</tvExpOptDlg>
     <cbSel>0</cbSel>
     <RteFlg>0</RteFlg>
@@ -1100,10 +1134,10 @@
       <FileType>2</FileType>
       <tvExp>0</tvExp>
       <Focus>0</Focus>
-      <ColumnNumber>0</ColumnNumber>
+      <ColumnNumber>26</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>144</TopLine>
-      <CurrentLine>158</CurrentLine>
+      <TopLine>145</TopLine>
+      <CurrentLine>154</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\..\bsp\lpc43xx\startup_keil\startup_LPC43xx.s</PathWithFileName>
       <FilenameWithoutPath>startup_LPC43xx.s</FilenameWithoutPath>
@@ -1112,4 +1146,44 @@
     </File>
   </Group>
 
+  <Group>
+    <GroupName>fatfs</GroupName>
+    <tvExp>1</tvExp>
+    <tvExpOptDlg>0</tvExpOptDlg>
+    <cbSel>0</cbSel>
+    <RteFlg>0</RteFlg>
+    <File>
+      <GroupNumber>6</GroupNumber>
+      <FileNumber>41</FileNumber>
+      <FileType>1</FileType>
+      <tvExp>0</tvExp>
+      <Focus>0</Focus>
+      <ColumnNumber>56</ColumnNumber>
+      <tvExpOptDlg>0</tvExpOptDlg>
+      <TopLine>1</TopLine>
+      <CurrentLine>20</CurrentLine>
+      <bDave2>0</bDave2>
+      <PathWithFileName>..\..\..\vendor\fatfs\diskio.c</PathWithFileName>
+      <FilenameWithoutPath>diskio.c</FilenameWithoutPath>
+      <RteFlg>0</RteFlg>
+      <bShared>0</bShared>
+    </File>
+    <File>
+      <GroupNumber>6</GroupNumber>
+      <FileNumber>42</FileNumber>
+      <FileType>1</FileType>
+      <tvExp>0</tvExp>
+      <Focus>0</Focus>
+      <ColumnNumber>0</ColumnNumber>
+      <tvExpOptDlg>0</tvExpOptDlg>
+      <TopLine>0</TopLine>
+      <CurrentLine>0</CurrentLine>
+      <bDave2>0</bDave2>
+      <PathWithFileName>..\..\..\vendor\fatfs\ff.c</PathWithFileName>
+      <FilenameWithoutPath>ff.c</FilenameWithoutPath>
+      <RteFlg>0</RteFlg>
+      <bShared>0</bShared>
+    </File>
+  </Group>
+
 </ProjectOpt>
diff --git a/demos/host/host_os_none/host_os_none.uvproj b/demos/host/host_os_none/host_os_none.uvproj
index ab31f794..a88a9e2a 100644
--- a/demos/host/host_os_none/host_os_none.uvproj
+++ b/demos/host/host_os_none/host_os_none.uvproj
@@ -350,7 +350,7 @@
               <MiscControls>--gnu --c99 --diag_suppress=66</MiscControls>
               <Define>CORE_M4 MCU=MCU_LPC43XX BOARD=BOARD_EA4357 TUSB_CFG_OS=TUSB_OS_NONE</Define>
               <Undefine></Undefine>
-              <IncludePath>..\src;..\..\bsp\lpc43xx\CMSIS_LPC43xx_DriverLib\inc;..\..\bsp;..\..\..\tinyusb</IncludePath>
+              <IncludePath>..\src;..\..\bsp\lpc43xx\CMSIS_LPC43xx_DriverLib\inc;..\..\bsp;..\..\..\tinyusb;..\..\..\vendor\fatfs</IncludePath>
             </VariousControls>
           </Cads>
           <Aads>
@@ -613,6 +613,21 @@
             </File>
           </Files>
         </Group>
+        <Group>
+          <GroupName>fatfs</GroupName>
+          <Files>
+            <File>
+              <FileName>diskio.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\vendor\fatfs\diskio.c</FilePath>
+            </File>
+            <File>
+              <FileName>ff.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\vendor\fatfs\ff.c</FilePath>
+            </File>
+          </Files>
+        </Group>
       </Groups>
     </Target>
     <Target>
@@ -1262,6 +1277,21 @@
             </File>
           </Files>
         </Group>
+        <Group>
+          <GroupName>fatfs</GroupName>
+          <Files>
+            <File>
+              <FileName>diskio.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\vendor\fatfs\diskio.c</FilePath>
+            </File>
+            <File>
+              <FileName>ff.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\vendor\fatfs\ff.c</FilePath>
+            </File>
+          </Files>
+        </Group>
       </Groups>
     </Target>
   </Targets>
diff --git a/demos/host/src/msc_app.c b/demos/host/src/msc_app.c
index 76b53147..1006ad16 100644
--- a/demos/host/src/msc_app.c
+++ b/demos/host/src/msc_app.c
@@ -47,6 +47,9 @@
 
 #if TUSB_CFG_HOST_MSC
 
+#include "ff.h"
+#include "diskio.h"
+
 //--------------------------------------------------------------------+
 // MACRO CONSTANT TYPEDEF
 //--------------------------------------------------------------------+
@@ -54,6 +57,7 @@
 //--------------------------------------------------------------------+
 // INTERNAL OBJECT & FUNCTION DECLARATION
 //--------------------------------------------------------------------+
+static FATFS fatfs[TUSB_CFG_HOST_DEVICE_MAX] TUSB_CFG_ATTR_USBRAM;
 
 //--------------------------------------------------------------------+
 // tinyusb callback (ISR context)
@@ -62,6 +66,7 @@ void tusbh_msc_mounted_cb(uint8_t dev_addr)
 {
   printf("an msc device is mounted\n");
 
+  //------------- Disk Information -------------//
   // SCSI VendorID[8] & ProductID[16] from Inquiry Command
   uint8_t const* p_vendor  = tusbh_msc_get_vendor_name(dev_addr);
   uint8_t const* p_product = tusbh_msc_get_product_name(dev_addr);
@@ -77,6 +82,14 @@ void tusbh_msc_mounted_cb(uint8_t dev_addr)
   tusbh_msc_get_capacity(dev_addr, &last_lba, &block_size);
   printf("Disk Size: %d MB\n", (last_lba+1)/ ((1024*1024)/block_size) );
   printf("LBA 0-0x%X  Block Size: %d\n", last_lba, block_size);
+
+  //------------- file system (only 1 LUN support) -------------//
+  DSTATUS stat = disk_initialize(0);
+
+  if ( disk_is_ready(0) )
+  {
+    f_mount(0, &fatfs[dev_addr-1]);
+  }
 }
 
 //--------------------------------------------------------------------+
diff --git a/vendor/fatfs/diskio.c b/vendor/fatfs/diskio.c
new file mode 100644
index 00000000..85862e47
--- /dev/null
+++ b/vendor/fatfs/diskio.c
@@ -0,0 +1,116 @@
+/**************************************************************************/
+/*!
+    @file     diskio.c
+    @author   hathach (tinyusb.org)
+
+    @section LICENSE
+
+    Software License Agreement (BSD License)
+
+    Copyright (c) 2013, hathach (tinyusb.org)
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are met:
+    1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+    3. Neither the name of the copyright holders nor the
+    names of its contributors may be used to endorse or promote products
+    derived from this software without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
+    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    This file is part of the tinyusb stack.
+*/
+/**************************************************************************/
+
+#include "boards/board.h"
+#include "tusb.h"
+
+#include "diskio.h"
+
+//--------------------------------------------------------------------+
+// INCLUDE
+//--------------------------------------------------------------------+
+
+//--------------------------------------------------------------------+
+// MACRO CONSTANT TYPEDEF
+//--------------------------------------------------------------------+
+static volatile DSTATUS disk_state = STA_NOINIT;
+
+//--------------------------------------------------------------------+
+// INTERNAL OBJECT & FUNCTION DECLARATION
+//--------------------------------------------------------------------+
+
+//--------------------------------------------------------------------+
+// IMPLEMENTATION
+//--------------------------------------------------------------------+
+
+//pdrv Specifies the physical drive number.
+DSTATUS disk_initialize ( BYTE pdrv )
+{
+  return disk_state;
+}
+
+DSTATUS disk_status (BYTE pdrv)
+{
+  return disk_state;
+}
+
+//pdrv
+//    Specifies the physical drive number.
+//buff
+//    Pointer to the byte array to store the read data. The size of buffer must be in sector size * sector count.
+//sector
+//    Specifies the start sector number in logical block address (LBA).
+//count
+//    Specifies number of sectors to read. The value can be 1 to 128. Generally, a multiple sector transfer request
+//    must not be split into single sector transactions to the device, or you may not get good read performance.
+DRESULT disk_read (BYTE pdrv, BYTE*buff, DWORD sector, BYTE count)
+{
+
+}
+
+
+DRESULT disk_write (BYTE pdrv, const BYTE* buff, DWORD sector, BYTE count)
+{
+
+}
+
+DRESULT disk_ioctl (BYTE pdrv, BYTE cmd, void* buff)
+{
+
+}
+
+//DWORD get_fattime (void)
+//{
+//  union {
+//    struct {
+//      DWORD second       : 5;
+//      DWORD minute       : 6;
+//      DWORD hour         : 5;
+//      DWORD day_in_month : 5;
+//      DWORD month        : 4;
+//      DWORD year         : 7;
+//    };
+//
+//    DWORD value
+//  } timestamp =
+//  {
+//      .year = (2013-1980),
+//      .month = 10,
+//      .day_in_month = 21,
+//  };
+//}
diff --git a/vendor/fatfs/diskio.h b/vendor/fatfs/diskio.h
index 580fbf74..5a69f69d 100644
--- a/vendor/fatfs/diskio.h
+++ b/vendor/fatfs/diskio.h
@@ -13,7 +13,7 @@ extern "C" {
 #define _USE_IOCTL	1	/* 1: Enable disk_ioctl fucntion */
 
 #include "integer.h"
-
+#include <stdbool.h>
 
 /* Status of Disk Functions */
 typedef BYTE	DSTATUS;
@@ -28,17 +28,6 @@ typedef enum {
 } DRESULT;
 
 
-/*---------------------------------------*/
-/* Prototypes for disk control functions */
-
-
-DSTATUS disk_initialize (BYTE pdrv);
-DSTATUS disk_status (BYTE pdrv);
-DRESULT disk_read (BYTE pdrv, BYTE*buff, DWORD sector, BYTE count);
-DRESULT disk_write (BYTE pdrv, const BYTE* buff, DWORD sector, BYTE count);
-DRESULT disk_ioctl (BYTE pdrv, BYTE cmd, void* buff);
-
-
 /* Disk Status Bits (DSTATUS) */
 #define STA_NOINIT		0x01	/* Drive not initialized */
 #define STA_NODISK		0x02	/* No medium in the drive */
@@ -80,6 +69,22 @@ DRESULT disk_ioctl (BYTE pdrv, BYTE cmd, void* buff);
 #define CT_SDC		(CT_SD1|CT_SD2)	/* SD */
 #define CT_BLOCK	0x08		/* Block addressing */
 
+/*---------------------------------------*/
+/* Prototypes for disk control functions */
+
+
+DSTATUS disk_initialize (BYTE pdrv);
+DSTATUS disk_status (BYTE pdrv);
+DRESULT disk_read (BYTE pdrv, BYTE*buff, DWORD sector, BYTE count);
+DRESULT disk_write (BYTE pdrv, const BYTE* buff, DWORD sector, BYTE count);
+DRESULT disk_ioctl (BYTE pdrv, BYTE cmd, void* buff);
+
+static inline bool disk_is_ready(BYTE pdrv);
+static inline bool disk_is_ready(BYTE pdrv)
+{
+  return (disk_status(pdrv) & (STA_NOINIT | STA_NODISK)) == 0;
+}
+
 
 #ifdef __cplusplus
 }
diff --git a/vendor/fatfs/ffconf.h b/vendor/fatfs/ffconf.h
index c5cbfa88..87af580a 100644
--- a/vendor/fatfs/ffconf.h
+++ b/vendor/fatfs/ffconf.h
@@ -20,7 +20,7 @@
 /  data transfer. This reduces memory consumption 512 bytes each file object. */
 
 
-#define _FS_READONLY	0	/* 0:Read/Write or 1:Read only */
+#define _FS_READONLY	1	/* 0:Read/Write or 1:Read only */
 /* Setting _FS_READONLY to 1 defines read only configuration. This removes
 /  writing functions, f_write, f_sync, f_unlink, f_mkdir, f_chmod, f_rename,
 /  f_truncate and useless f_getfree. */
diff --git a/vendor/fatfs/integer.h b/vendor/fatfs/integer.h
index 16ad4082..37cda0e0 100644
--- a/vendor/fatfs/integer.h
+++ b/vendor/fatfs/integer.h
@@ -17,7 +17,10 @@ typedef int				INT;
 typedef unsigned int	UINT;
 
 /* These types must be 8-bit integer */
+#ifndef LPC_TYPES_H // avoid typedef redefinition in lpc_types.h
 typedef char			CHAR;
+#endif
+
 typedef unsigned char	UCHAR;
 typedef unsigned char	BYTE;