Update TODO list

TODO

@@ -1,4 +1,4 @@
-NuttX TODO List (Last updated May 3, 2015)
+NuttX TODO List (Last updated May 9, 2015)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 This file summarizes known NuttX bugs, limitations, inconsistencies with
@@ -17,7 +17,7 @@ nuttx/
   (4)  C++ Support
   (6)  Binary loaders (binfmt/)
  (12)  Network (net/, drivers/net)
-  (4)  USB (drivers/usbdev, drivers/usbhost)
+  (5)  USB (drivers/usbdev, drivers/usbhost)
  (12)  Libraries (libc/, libm/)
  (11)  File system/Generic drivers (fs/, drivers/)
   (8)  Graphics subsystem (graphics/)
@@ -1096,6 +1096,40 @@ o USB (drivers/usbdev, drivers/usbhost)
   Status:      Open
   Priority:    Medium-Low
 
+  Title:       USB CDC/ACM HOST CLASS DRIVER
+  Desciption:  A CDC/ACM host class driver has been added.  This has been
+               testing by running the USB CDC/ACM host on an Olimex
+               LPC1766STK and using the configs/stm3210e-eval/usbserial
+               configuration (using the CDC/ACM device side driver).  There
+               are several unresolved issues that prevent the host driver
+               from being usable:
+
+              - The driver works fine when configured for BULK-ONLY
+                operation.
+              - Testing has not been performed with the interrupt IN channel
+                enabled (ie., I have not enabled FLOW control nor do I have
+                a test case that used the interrupt IN channel).  I can see
+                that the polling for interrupt IN data is occurring
+                initially.
+              - I test for incoming data by doing 'nsh> cat /dev/ttyACM0' on
+                the Olimex LPC1766STK host.  The bulk data reception still
+                works okay whether or not the interupt IN channel is enabled.
+                If the interrupt IN channel is enabled, then polling of that
+                channel appears to stop when the bulk in channel becomes
+                active.
+              - The RX reception logic uses the low priority work queue.
+                However, that logic never returns and so blocks other use of
+                the work queue thread.  This is probably okay but means that
+                the RX reception logic probably should be moved to its own
+                dedicated thread.
+              - When the cable connecting the STM3110E-EVAL device is
+                removed, the software on the Olimex LPC1766STK crashes.  The
+                crash is due to corruption of the OHCI bDoneHead pointer.
+
+               Most of these problems are unique to the Olimex LPC1766STK DCD; some are probably design problems in the CDC/ACM host driver.  The bottom line is that the host CDC/ACM driver is immature and you should probably not use it unless you want to invest some effort.
+  Status:      Open
+  Priority:    Medium-Low unless you really need host CDC/ACM support.
+
 o Libraries (libc/)
   ^^^^^^^^^^^^^^^^^
 

configs/olimex-lpc1766stk/hidkbd/setenv.sh

@@ -52,6 +52,7 @@ fi
 # the CodeSourcery toolchain in any other location
 # export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery G++ Lite/bin"
 export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_EABI/bin"
+#export TOOLCHAIN_BIN="/cygdrive/c/Users/MyName/MentorGraphics/Sourcery_CodeBench_Lite_for_ARM_EABI/bin"
 
 # These are the Cygwin paths to the locations where I installed the Atollic
 # toolchain under windows.  You will also have to edit this if you install

drivers/usbhost/usbhost_cdcacm.c

@@ -745,7 +745,7 @@ static void usbhost_notification_work(FAR void *arg)
       ret = DRVR_ASYNCH(hport->drvr, priv->intin,
                         (FAR uint8_t *)priv->notification,
                         MAX_NOTIFICATION, usbhost_notification_callback,
-                        &priv->usbclass);
+                        priv);
       if (ret < 0)
         {
           udbg("ERROR: DRVR_ASYNCH failed: %d\n", ret);
@@ -2008,7 +2008,7 @@ static int usbhost_connect(FAR struct usbhost_class_s *usbclass,
       ret = DRVR_ASYNCH(hport->drvr, priv->intin,
                         (FAR uint8_t *)priv->notification,
                         MAX_NOTIFICATION, usbhost_notification_callback,
-                        &priv->usbclass);
+                        priv);
       if (ret < 0)
         {
           udbg("ERROR: DRVR_ASYNCH failed: %d\n", ret);
@@ -2088,7 +2088,7 @@ static int usbhost_disconnected(struct usbhost_class_s *usbclass)
       int ret = DRVR_CANCEL(hport->drvr, priv->intin);
       if (ret < 0)
         {
-         udbg("WARNING: DRVR_CANCEL failed: %d\n", ret);
+         udbg("ERROR: DRVR_CANCEL failed: %d\n", ret);
         }
     }
 #endif