LPC31 EHCI: Verified that driver works with keyboard (low-speed, interrupt endpoints)
This commit is contained in:
Gregory Nutt
parent
2d1408e3e1
commit
4c7cc446c1
@ -4284,7 +4284,7 @@ FAR struct usbhost_connection_s *lpc31_ehci_initialize(int controller)
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}
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#endif
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#if !defined(CONFIG_LPC31_EHCI_PREALLOCATE) || !defined(CONFIG_USBHOST_INT_DISABLE)
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#if !defined(CONFIG_LPC31_EHCI_PREALLOCATE) && !defined(CONFIG_USBHOST_INT_DISABLE)
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/* Allocate the periodic framelist */
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g_framelist = (uint32_t *)
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@ -658,24 +658,150 @@ Configurations
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support in the NSH configuration, please modify the NuttX
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configuration as follows:
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Drivers -> USB Host Driver Support
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CONFIG_USBHOST=y : General USB host support
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CONFIG_USBHOST_MSC=y : Mass storage class support
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CONFIG_USBHOST_HIDKBD=? : HID keyboard class support
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CONFIG_USBHOST_INT_DISABLE=y : Not needed
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CONFIG_USBHOST_ISOC_DISABLE=y : Not needed
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a) Basic USB Host support
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System Type -> Peripherals
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CONFIG_LPC31_USBOTG=y : Enable the USB OTG peripheral
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Drivers -> USB Host Driver Support
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CONFIG_USBHOST=y : General USB host support
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CONFIG_USBHOST_INT_DISABLE=y : Not needed (unless you use the keyboard)
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CONFIG_USBHOST_ISOC_DISABLE=y : Not needed (or supported)
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System Type -> USB host configuration
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CONFIG_LPC31_EHCI_BUFSIZE=128
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CONFIG_LPC31_EHCI_PREALLOCATE=y
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System Type -> Peripherals
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CONFIG_LPC31_USBOTG=y : Enable the USB OTG peripheral
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Library Routines
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CONFIG_SCHED_WORKQUEUE=y : Work queue support is needed
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System Type -> USB host configuration
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CONFIG_LPC31_EHCI_BUFSIZE=128
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CONFIG_LPC31_EHCI_PREALLOCATE=y
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The USB monitor can also be enabled:
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Library Routines
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CONFIG_SCHED_WORKQUEUE=y : Work queue support is needed
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CONFIG_SCHED_WORKSTACKSIZE=1536
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b. USB Mass Storage Class. With this class enabled, you can support
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connection of USB FLASH storage drives. Support for the USB
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mass storage class is enabled like this:
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Drivers -> USB Host Driver Support
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CONFIG_USBHOST_MSC=y : Mass storage class support
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The MSC class will work like this. When you first start NSH, you
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can look at the available devices like this:
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NuttShell (NSH) NuttX-6.31
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nsh> ls -l /dev
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/dev:
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crw-rw-rw- 0 console
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crw-rw-rw- 0 null
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crw-rw-rw- 0 ttyS0
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The crw-rw-rw- indicates a readable, write-able character device.
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nsh> ls -l /dev
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/dev:
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crw-rw-rw- 0 console
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crw-rw-rw- 0 null
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brw-rw-rw- 0 sda
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crw-rw-rw- 0 ttyS0
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The brw-rw-rw- indicates a readable, write-able block device.
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This block device can then be mounted like this:
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nsh> mount -t vfat /dev/sda /mnt/flash
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The USB FLASH drive contents are then visible under /mnt/flash and
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can be operated on with normal file system commands like:
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nsh> mount -t vfat /dev/sda /mnt/flash
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nsh> cat /mnt/flash/filec.c
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etc.
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It is recommended that the drive by unmounted BEFORE it is
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removed. That is not always possible so if the USB FLASH is
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removed BEFORE the drive is unmounted, the device at /dev/sda will
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persist in an unusable stack until it is unmounted with the
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following command (NOTE: If the FLASH drive is re-inserted in
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this state, it will appear as /dev/sdb):
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nsh> umount /mnt/flash
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c. HID Keyboard support. The following support will enable support
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for certain keyboard devices (only the so-called "boot" keyboard
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class is supported):
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Drivers -> USB Host Driver Support
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CONFIG_USBHOST_HIDKBD=y : HID keyboard class support
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Drivers -> USB Host Driver Support
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CONFIG_USBHOST_INT_DISABLE=n : Interrupt endpoint support needed
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In this case, when the HID keyboard is installed, you see a new
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character device called /dev/kbda.
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There is a HID keyboard test example that can be enabled with the
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following settings. NOTE: In this case, NSH is disabled because
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the HID keyboard test is a standalone test.
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This selects the HIDKBD example:
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Application Configuration -> Examples
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CONFIG_EXAMPLES_HIDKBD=y
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CONFIG_EXAMPLES_HIDKBD_DEVNAME="/dev/kbda"
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RTOS Features
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CONFIG_USER_ENTRYPOINT="hidkbd_main"
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These settings disable NSH:
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Application Configuration -> Examples
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CONFIG_EXAMPLES_NSH=n
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Application Configuration -> NSH Library
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CONFIG_NSH_LIBRARY=y
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Using the HID Keyboard example: Anything typed on the keyboard
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should be echoed on the serial console. Here is some sample of
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a session:
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Initialization
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hidkbd_main: Register class drivers
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hidkbd_main: Initialize USB host keyboard driver
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hidkbd_main: Start hidkbd_waiter
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hidkbd_waiter: Running
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The test example will periodically attempt to open /dev/kbda
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Opening device /dev/kbda
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Failed: 2
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Opening device /dev/kbda
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Failed: 2
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etc.
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The open will fail each time because there is no keyboard
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attached. When a USB keyboard is attached, the open of /dev/kbda
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will succeed and the test will begin echoing data to the serial
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console:
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hidkbd_waiter: connected
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Opening device /dev/kbda
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Device /dev/kbda opened
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For example, this text was entered from the keyboard:
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Now is the time for all good men to come to the aid of their party.
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Then when the device is removed, the test will resume attempting
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to open the driver until the next time it is connected
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Closing device /dev/kbda: -1
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Opening device /dev/kbda
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Failed: 19
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hidkbd_waiter: disconnected
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Opening device /dev/kbda
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Failed: 2
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etc.
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d. The USB monitor can also be enabled:
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Drivers -> USB Host Driver Support
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CONFIG_USBHOST_TRACE=y
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@ -692,3 +818,60 @@ Configurations
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SRAM with debug/tracing enabled by carefully going through the
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configuration and reducing stack sizes, disabling unused OS features,
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disabling un-necessary NSH commands, etc.
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5. Making the Configuration Smaller. This configuration runs out of
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internal SRAM. If you enable many features, then your code image
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may outgrow the available SRAM; even if the code can be loaded into
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SRAM, it may still fail at runtime due to insufficient memory.
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Since SDRAM is not currently working (see above) and NAND support
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has not be integrated, the only really option is to put NSH "on a
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diet" to reduct the size so that it will fit into memory.
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Here are a few things you can do:
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1. Try using smaller stack sizes,
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2. Disable operating system features. Here some that can go:
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CONFIG_DISABLE_ENVIRON=y
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CONFIG_DISABLE_MQUEUE=y
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CONFIG_DISABLE_POSIX_TIMERS=y
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CONFIG_DISABLE_PTHREAD=y
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CONFIG_MQ_MAXMSGSIZE=0
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CONFIG_NPTHREAD_KEYS=0
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CONFIG_NUNGET_CHARS=0
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CONFIG_PREALLOC_MQ_MSGS=0
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3. Disable NSH commands. I can life fine without these:
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CONFIG_NSH_DISABLE_ADDROUTE=y
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CONFIG_NSH_DISABLE_CD=y
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CONFIG_NSH_DISABLE_CMP=y
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CONFIG_NSH_DISABLE_CP=y
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CONFIG_NSH_DISABLE_DD=y
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CONFIG_NSH_DISABLE_DELROUTE=y
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CONFIG_NSH_DISABLE_EXEC=y
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CONFIG_NSH_DISABLE_EXIT=y
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CONFIG_NSH_DISABLE_GET=y
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CONFIG_NSH_DISABLE_HEXDUMP=y
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CONFIG_NSH_DISABLE_IFCONFIG=y
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CONFIG_NSH_DISABLE_LOSETUP=y
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CONFIG_NSH_DISABLE_MB=y
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CONFIG_NSH_DISABLE_MH=y
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CONFIG_NSH_DISABLE_MKFIFO=y
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CONFIG_NSH_DISABLE_MKRD=y
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CONFIG_NSH_DISABLE_NSFMOUNT=y
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CONFIG_NSH_DISABLE_PING=y
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CONFIG_NSH_DISABLE_PUT=y
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CONFIG_NSH_DISABLE_PWD=y
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CONFIG_NSH_DISABLE_RM=y
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CONFIG_NSH_DISABLE_RMDIR=y
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CONFIG_NSH_DISABLE_SET=y
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CONFIG_NSH_DISABLE_SH=y
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CONFIG_NSH_DISABLE_SLEEP=y
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CONFIG_NSH_DISABLE_TEST=y
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CONFIG_NSH_DISABLE_UNSET=y
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CONFIG_NSH_DISABLE_USLEEP=y
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CONFIG_NSH_DISABLE_WGET=y
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CONFIG_NSH_DISABLE_XD=y
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@ -264,10 +264,10 @@ CONFIG_PREALLOC_TIMERS=4
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#
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# Stack and heap information
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#
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CONFIG_IDLETHREAD_STACKSIZE=1024
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CONFIG_USERMAIN_STACKSIZE=2048
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CONFIG_IDLETHREAD_STACKSIZE=768
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CONFIG_USERMAIN_STACKSIZE=1536
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CONFIG_PTHREAD_STACK_MIN=256
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CONFIG_PTHREAD_STACK_DEFAULT=2048
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CONFIG_PTHREAD_STACK_DEFAULT=1536
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#
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# Device Drivers
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@ -406,7 +406,7 @@ CONFIG_MM_REGIONS=1
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#
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# Standard C Library Options
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#
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CONFIG_STDIO_BUFFER_SIZE=64
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CONFIG_STDIO_BUFFER_SIZE=48
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CONFIG_STDIO_LINEBUFFER=y
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CONFIG_NUNGET_CHARS=2
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CONFIG_LIB_HOMEDIR="/"
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@ -420,7 +420,7 @@ CONFIG_LIB_RAND_ORDER=1
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CONFIG_EOL_IS_EITHER_CRLF=y
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# CONFIG_LIBC_EXECFUNCS is not set
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CONFIG_POSIX_SPAWN_PROXY_STACKSIZE=1024
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CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE=2048
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CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE=1536
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# CONFIG_LIBC_STRERROR is not set
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# CONFIG_LIBC_PERROR_STDOUT is not set
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CONFIG_ARCH_LOWPUTC=y
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