3 files changed, 55 insertions, 5 deletions
diff --git a/nuttx/configs/mbed/README.txt b/nuttx/configs/mbed/README.txt
index 6098fc88b..c4122a6f6 100755
--- a/nuttx/configs/mbed/README.txt
+++ b/nuttx/configs/mbed/README.txt
@@ -12,6 +12,7 @@ Contents
   NuttX buildroot Toolchain
   USB Device Controller Functions
   mbed Configuration Options
+  USB Host Configuration
   Configurations
 
 Development Environment
@@ -305,7 +306,7 @@ mbed Configuration Options
 	CONFIG_NET_MULTICAST - Enable receipt of multicast (and unicast) frames.
       Automatically set if CONFIG_NET_IGMP is selected.
 
-  LPC17xx USB Configuration
+  LPC17xx USB Device Configuration
 
 	CONFIG_LPC17_USBDEV_FRAME_INTERRUPT
 	  Handle USB Start-Of-Frame events. 
@@ -320,6 +321,53 @@ mbed Configuration Options
 	CONFIG_LPC17_USBDEV_DMA
 	  Enable lpc17xx-specific DMA support
 
+  LPC17xx USB Host Configuration
+
+    CONFIG_USBHOST_OHCIRAM_SIZE
+      Total size of OHCI RAM (in AHB SRAM Bank 1)
+    CONFIG_USBHOST_NEDS
+      Number of endpoint descriptors
+    CONFIG_USBHOST_TDBUFFERS
+      Number of transfer descriptor buffers
+    CONFIG_USBHOST_TDBUFSIZE
+      Size of one transfer descriptor buffer
+    CONFIG_USBHOST_IOBUFSIZE
+      Size of one end-user I/O buffer.  This can be zero if the
+      application can guarantee that all end-user I/O buffers
+      reside in AHB SRAM.
+
+USB Host Configuration
+^^^^^^^^^^^^^^^^^^^^^^
+
+The NuttShell (NSH) mbed can be modified in order to support USB
+host operations.  To make these modifications, do the following:
+
+1. First configure to build the NSH configuration from the top-level
+   NuttX directory:
+
+   cd tools
+   ./configure mbed/nsh
+   cd ..
+
+2. Then edit the top-level .config file to enable USB host.  Make the
+   following changes:
+
+   CONFIG_LPC17_USBHOST=n
+   CONFIG_USBHOST=n
+   CONFIG_SCHED_WORKQUEUE=y
+
+When this change is made, NSH should be extended to support USB flash
+devices.  When a FLASH device is inserted, you should see a device
+appear in the /dev (psuedo) directory.  The device name should be
+like /dev/sda, /dev/sdb, etc.  The USB mass storage device, is present
+it can be mounted from the NSH command line like:
+
+   ls /dev
+   mount -t vfat /dev/sda /mnt/flash
+
+Files on the connect USB flash device should then be accessible under
+the mountpoint /mnt/flash.
+
 Configurations
 ^^^^^^^^^^^^^^
 
diff --git a/nuttx/configs/nucleus2g/README.txt b/nuttx/configs/nucleus2g/README.txt
index 4d88654c5..42be0f1bf 100755
--- a/nuttx/configs/nucleus2g/README.txt
+++ b/nuttx/configs/nucleus2g/README.txt
@@ -434,6 +434,7 @@ Nucleus 2G Configuration Options
 	  Enable lpc17xx-specific DMA support
 
   LPC17xx USB Host Configuration
+
     CONFIG_USBHOST_OHCIRAM_SIZE
       Total size of OHCI RAM (in AHB SRAM Bank 1)
     CONFIG_USBHOST_NEDS
@@ -450,8 +451,9 @@ Nucleus 2G Configuration Options
 USB Host Configuration
 ^^^^^^^^^^^^^^^^^^^^^^
 
-The NuttShell (NSH) Nucleus 2G can be modified in order to support
-USB host operations.  To make these modifications, do the following:
+The NuttShell (NSH) Nucleus 2G configuration can be modified in order
+to support USB host operations.  To make these modifications, do the
+following:
 
 1. First configure to build the NSH configuration from the top-level
    NuttX directory:
diff --git a/nuttx/drivers/usbhost/usbhost_storage.c b/nuttx/drivers/usbhost/usbhost_storage.c
index e0f4dc4ad..5c44fd9f6 100644
--- a/nuttx/drivers/usbhost/usbhost_storage.c
+++ b/nuttx/drivers/usbhost/usbhost_storage.c
@@ -1085,14 +1085,14 @@ static inline int usbhost_cfgdesc(FAR struct usbhost_state_s *priv,
   ret = DRVR_EPALLOC(priv->drvr, &boutdesc, &priv->bulkout);
   if (ret != OK)
     {
-      udbg("ERROR: Failed to allocated Bulk OUT endpoint\n");
+      udbg("ERROR: Failed to allocate Bulk OUT endpoint\n");
       return ret;
     }
 
   ret = DRVR_EPALLOC(priv->drvr, &bindesc, &priv->bulkin);
   if (ret != OK)
     {
-      udbg("ERROR: Failed to allocated Bulk IN endpoint\n");
+      udbg("ERROR: Failed to allocate Bulk IN endpoint\n");
       (void)DRVR_EPFREE(priv->drvr, priv->bulkout);
       return ret;
     }