USB Host MSC test using the reference smt32d4discotst1

This is a follow on from previous reference board:
Description: Bring up a USB Host with MSC capability, and store periodic data on it.

Equipment Needed in addition to previous test.
*) a converter cable from USB micro to USB Type A Host
*) A USB Flash drive

The stm32f4discovery board has "USB OTG FS with micro-AB connector". 

This supports a USB Full Speed device to connect, and Nuttx drivers support a USB Host MSC capability - ie accessing a flash drive. 

$ make menuconfig

System Type--> STM32 Peripheral Support-

          [*] OTG FS

Device Drivers-->USB Host Driver Support

     [*]   Mass Storage Class Support       

<exit><exit>

Board Selection--> #notice the following are set

   (1024) USB host waiter stack size (NEW)

   (100) USB host waiter task priority (NEW)

<exit>

System Type-->USB FS Host Configuration

     (128) Rx Packet Size (NEW)

      (96) Non-periodic Tx FIFO Size (NEW)

      (128) Periodic Tx FIFO size (NEW)

      (128) Descriptor Size (NEW)

      [ ] Enable SOF interrupts (NEW)

#USB needs a work thread

RTOS Features-->Work queue support   CONFIG_SCHED_WORKQUEU

  [*] High priority (kernel) worker thread    CONFIG_SCHED_HPWORK

      (224) High priority worker thread priority (NEW)

      (50000) High priority worker thread period (NEW)

      (2048) High priority worker thread stack size (NEW)

 <exit>.....<save>
RTOS Features -->Stack and Heap Information
(these values are arbitrarily increased to insure enough ram - FUT needs to be characterized with a stack inspection program some time)
 (2048) Idle thread stack size 
  (4096) Main thread stack size 
  (2048) Minimum pthread stack size
  (2048) Default pthread stack size

$mknx.sh

 size nuttx

   text    data     bss     dec     hex filename

  86204     308    6148   92660   169f4 nuttx

$stwr

on the stm32f4discovery

uttShell (NSH) NuttX-17.6

nsh>

nsh> ls dev

/dev:

 console

 null

 rtc0

 ttyS0

# Plug in a Flash drive through the microUSB to USB Type A Receptacle, and look for  'sda'

nsh> ls dev

/dev:

 console

 null

 rtc0

 sda

 ttyS0

nsh>

#### Hurrah - its recognized the USB Flash drive.

mount -t vfat /dev/sda /usb0

nsh> ls

/:

 dev/

 proc/

 usb0/

nsh> ls /usb0

/usb0:

 System Volume Information/

 LOST.DIR/

.....

#### WOW!  Reading the directory   #### 

nsh> mkdir /usb0/tst1

#check if it writes to the directory
nsh> help > /usb0/tst1/h.txt

nsh> cat /usb0/tst1/h.txt

help usage:  help [-v] [<cmd>]

  [           dirname     free        mkfifo      rm          uname

  ?           date        help        mkrd        rmdir       umount

  basename    dd          hexdump     mh          set         unset

  break       df          kill        mount       sh          usleep

  cat         echo        ls          mv          sleep       xd

  cd          exec        mb          mw          test

  cp          exit        mkdir       ps          time

  cmp         false       mkfatfs     pwd         true

Builtin Apps:

# What meta info is there about the file? - but no date information

nsh> ls -lRs /usb0/tst1

/usb0/tst1:

 -rw-rw-rw-     619 h.txt

nsh>

#Now reset the board, with the USB Host installed, verify the USB Host is recognized and writable.

NuttShell (NSH) NuttX-17.6

nsh> ls /dev

/dev:

 console

 null

 rtc0

 sda

 ttyS0

nsh> mount -t vfat /dev/sda /usb0

nsh> ls /usb0/tst1

/usb0/tst1:

 h.txt

nsh> rm /usb0/tst1/h.txt

nsh> ls /usb0/tst1

/usb0/tst1:

nsh>

#File is gone - so writeable.

# Ok - so lets write to these directories from an app. This requires using an examples application that can be redirected.

$make menuconfig

Application Configuration --->Examples  

 [*] "Hello, World!" example

  (100) Hello task priority (NEW)

   (2048) Hello stack size (NEW)

<save><ok><exit>...

$mknx.sh

$stwr

nsh> help

help usage:  help [-v] [<cmd>]

  [           dirname     free        mkfifo      rm          uname

  ?           date        help        mkrd        rmdir       umount

  basename    dd          hexdump     mh          set         unset

  break       df          kill        mount       sh          usleep

  cat         echo        ls          mv          sleep       xd

  cd          exec        mb          mw          test

  cp          exit        mkdir       ps          time

  cmp         false       mkfatfs     pwd         true

Builtin Apps:

  hello

nsh> hello

Hello, World!!

nsh> mount -t vfat /dev/sda /usb0

nsh> ls

/:

 dev/

 proc/

 usb0/

nsh> free > /usb0/tst1/f.txt

nsh> cat /usb0/tst1/f.txt

             total       used       free    largest

Mem:        189120      13552     175568     121392

nsh> hello > /usb0/tst1/h.txt

nsh> cat /usb0/tst1/h.txt
Hello, World!!

nsh>
nsh> hello >> /usb0/tst1/h.txt
nsh>
nsh> cat /usb0/tst1/h.txt
Hello, World!!
Hello, World!!

nsh>

#Wowa - all working nicely (afterNuttx 17.7 or 17.6 afterJuly/7 - bugfix )

<tbd: modify a program to write periodic data to USB Flash>