examples
^^^^^^^^
appconfig and CONFIG_APPS
The examples directory contains several sample applications that
can be linked with NuttX. The specific example is selected in the
configs/<board-name>/appconfig file via the CONFIGURED_APPS setting.
This setting provides the path to the directory containing the
application Makefile (this path is a relative to the apps/ top-
level directory). For example,
CONFIGURE_APPS += examples/ostest
Selects the examples/ostest example.
Built-In functions
Some of the examples may be built as "built-in" functions that
can be executed at run time (rather than as NuttX "main" programs).
These "built-in" examples can be also be executed from the NuttShell
(NSH) command line. In order to configure these built-in NSH
functions, you have to set up the following:
- CONFIG_NSH_BUILTIN_APPS - Enable support for external registered,
"named" applications that can be executed from the NSH
command line (see apps/README.txt for more information).
- CONFIG_EXAMPLES_XYZ_BUILTIN -- Build the XYZ example as a "built-in"
that can be executed from the NSH command line (where XYZ is
the specific example. See the following for examples that
support this option).
examples/adc
^^^^^^^^^^^^
A mindlessly simple test of an ADC devices. It simply reads from the
ADC device and dumps the data to the console forever.
This test depends on these specific ADC/NSH configurations settings (your
specific ADC settings might require additional settings).
CONFIG_ADC - Enabled ADC support
CONFIG_NSH_BUILTIN_APPS - Build the ADC test as an NSH built-in function.
Default: Built as a standalone problem
Specific configuration options for this example include:
CONFIG_EXAMPLES_ADC_DEVPATH - The path to the ADC device. Default: /dev/adc0
CONFIG_EXAMPLES_ADC_NSAMPLES - If CONFIG_NSH_BUILTIN_APPS
is defined, then the number of samples is provided on the command line
and this value is ignored. Otherwise, this number of samples is
collected and the program terminates. Default: Samples are collected
indefinitely.
CONFIG_EXAMPLES_ADC_GROUPSIZE - The number of samples to read at once.
Default: 4
examples/buttons
^^^^^^^^^^^^^^^^
This is a simple configuration that may be used to test the board-
specific button interfaces. Configuration options:
CONFIG_ARCH_BUTTONS - Must be defined for button support
CONFIG_EXAMPLE_BUTTONS_MIN - Lowest button number (MIN=0)
CONFIG_EXAMPLE_BUTTONS_MAX - Highest button number (MAX=7)
CONFIG_ARCH_IRQBUTTONS - Must be defined for interrupting button support
CONFIG_EXAMPLE_IRQBUTTONS_MIN - Lowest interrupting button number (MIN=0)
CONFIG_EXAMPLE_IRQBUTTONS_MAX - Highest interrupting button number (MAX=7)
Name strings for buttons:
CONFIG_EXAMPLE_BUTTONS_NAME0, CONFIG_EXAMPLE_BUTTONS_NAME1,
CONFIG_EXAMPLE_BUTTONS_NAME2, CONFIG_EXAMPLE_BUTTONS_NAME3,
CONFIG_EXAMPLE_BUTTONS_NAME4, CONFIG_EXAMPLE_BUTTONS_NAME5,
CONFIG_EXAMPLE_BUTTONS_NAME6, CONFIG_EXAMPLE_BUTTONS_NAME7,
Additional architecture-/board- specific configuration settings may also
be required.
NOTE: This test exercises internal button driver interfaces. As such, it
relies on internal OS interfaces that are not normally available to a
user-space program. As a result, this example cannot be used if a
NuttX is built as a protected, supervisor kernel (CONFIG_NUTTX_KERNEL).
examples/can
^^^^^^^^^^^^
If the CAN device is configured in loopback mode, then this example can
be used to test the CAN device in loop back mode. It simple sinces a
sequence of CAN messages and verifies that those messages are returned
exactly as sent.
This test depends on these specific CAN/NSH configurations settings (your
specific CAN settings might require additional settings).
CONFIG_CAN - Enables CAN support.
CONFIG_CAN_LOOPBACK - A CAN driver may or may not support a loopback
mode for testing. The STM32 CAN driver does support loopback mode.
CONFIG_NSH_BUILTIN_APPS - Build the CAN test as an NSH built-in function.
Default: Built as a standalone problem
Specific configuration options for this example include:
CONFIG_EXAMPLES_CAN_DEVPATH - The path to the CAN device. Default: /dev/can0
CONFIG_EXAMPLES_CAN_NMSGS - If CONFIG_NSH_BUILTIN_APPS
is defined, then the number of loops is provided on the command line
and this value is ignored. Otherwise, this number of CAN message is
collected and the program terminates. Default: If built as an NSH
built-in, the default is 32. Otherwise messages are sent and received
indefinitely.
The default behavior assumes loopback mode. Messages are sent, then read
and verified. The behavior can be altered for other kinds of testing where
the test only sends or received (but does not verify) can messages.
CONFIG_EXAMPLES_CAN_READONLY - Only receive messages
CONFIG_EXAMPLES_CAN_WRITEONLY - Only send messages
examples/cdcacm
^^^^^^^^^^^^^^^
This very simple example shows how a USB CDC/ACM serial can be dynamically
connected and disconnected from a host. This example can only be used as
an NSH built-int command. If built-in, then two new NSH commands will be
supported:
1. sercon - Connect the CDC/ACM serial device
2. serdis - Disconnect the CDC/ACM serial device
Configuration prequisites (not complete):
CONFIG_USBDEV=y : USB device support must be enabled
CONFIG_CDCACM=y : The CDC/ACM driver must be built
CONFIG_NSH_BUILTIN_APPS : NSH built-in application support must be enabled
Configuration options specific to this example:
CONFIG_EXAMPLES_CDCACM_DEVMINOR : The minor number of the CDC/ACM device.
: i.e., the 'x' in /dev/ttyACMx
If CONFIG_USBDEV_TRACE is enabled (or CONFIG_DEBUG and CONFIG_DEBUG_USB, or
CONFIG_USBDEV_TRACE), then the example code will also initialize the USB trace
output. The amount of trace output can be controlled using:
CONFIG_EXAMPLES_CDCACM_TRACEINIT
Show initialization events
CONFIG_EXAMPLES_CDCACM_TRACECLASS
Show class driver events
CONFIG_EXAMPLES_CDCACM_TRACETRANSFERS
Show data transfer events
CONFIG_EXAMPLES_CDCACM_TRACECONTROLLER
Show controller events
CONFIG_EXAMPLES_CDCACM_TRACEINTERRUPTS
Show interrupt-related events.
Note: This example is only enables or disable USB CDC/ACM via the NSH
'sercon' and 'serdis' command. It will enable and disable tracing per
the settings before enabling and after disabling the CDC/ACM device. It
will not, however, monitor buffered trace data in the interim. If
CONFIG_USBDEV_TRACE is defined (and the debug options are not), other
application logic will need to monitor the buffered trace data.
examples/composite
^^^^^^^^^^^^^^^^^^
This example test a USB composite device. The only supported composite is
CDC/ACM serial with a USB mass storage device.
Required overall configuration:
CONFIG_USBDEV=y - USB device support
CONFIG_USBDEV_COMPOSITE=y - USB composite device support
CONFIG_COMPOSITE_IAD=y - Interface associate descriptor needed
CONFIG_CDCACM=y - USB CDC/ACM serial device support
CONFIG_CDCACM_COMPOSITE=y - USB CDC/ACM serial composite device support
CONFIG_CDCACM_IFNOBASE=0 - CDC/ACM interfaces start with number 0
CONFIG_CDCACM_STRBASE=4 - Base of string numbers (not really needed)
CONFIG_CDCACM_EPINTIN=1 - Endpoint numbers must be unique
CONFIG_CDCACM_EPBULKIN=2
CONFIG_CDCACM_EPBULKOUT=3
CONFIG_USBMSC - USB mass storage device support
CONFIG_USBMSC_COMPOSITE=y - USB mass storage composite device support
CONFIG_USBMSC_IFNOBASE=2 - USB mass storage interfaces start with number 2
CONFIG_USBMSC_STRBASE=4 - Base of string numbers (needed)
CONFIG_USBMSC_EPBULKOUT=4 - Endpoint numbers must be unique
CONFIG_USBMSC_EPBULKIN=5
CONFIG_NSH_BUILTIN_APPS
This example can be built as two NSH "built-in" commands if this option
is selected: 'conn' will connect the USB composite device; 'msdis'
will disconnect the USB composite device.
Configuration options unique to this example:
CONFIG_EXAMPLES_COMPOSITE_DEBUGMM
Enables some debug tests to check for memory usage and memory leaks.
CONFIG_EXAMPLES_COMPOSITE_NLUNS
Defines the number of logical units (LUNs) exported by the USB storage
driver. Each LUN corresponds to one exported block driver (or partition
of a block driver). May be 1, 2, or 3. Default is 1.
CONFIG_EXAMPLES_COMPOSITE_DEVMINOR1
The minor device number of the block driver for the first LUN. For
example, N in /dev/mmcsdN. Used for registering the block driver. Default
is zero.
CONFIG_EXAMPLES_COMPOSITE_DEVPATH1
The full path to the registered block driver. Default is "/dev/mmcsd0"
CONFIG_EXAMPLES_COMPOSITE_DEVMINOR2 and CONFIG_EXAMPLES_COMPOSITE_DEVPATH2
Similar parameters that would have to be provided if CONFIG_EXAMPLES_COMPOSITE_NLUNS
is 2 or 3. No defaults.
CONFIG_EXAMPLES_COMPOSITE_DEVMINOR3 and CONFIG_EXAMPLES_COMPOSITE_DEVPATH2
Similar parameters that would have to be provided if CONFIG_EXAMPLES_COMPOSITE_NLUNS
is 3. No defaults.
CONFIG_EXAMPLES_COMPOSITE_BUFLEN. Default 256.
CONFIG_EXAMPLES_COMPOSITE_TTYUSB - The minor number of the USB serial device.
Default is zero (corresponding to /dev/ttyUSB0 or /dev/ttyACM0). Default is zero.
CCONFIG_EXAMPLES_COMPOSITE_SERDEV - The string corresponding to
CONFIG_EXAMPLES_COMPOSITE_TTYUSB. The default is "/dev/ttyUSB0" (for the PL2303
emulation) or "/dev/ttyACM0" (for the CDC/ACM serial device).
CONFIG_EXAMPLES_COMPOSITE_BUFSIZE - The size of the serial I/O buffer in
bytes. Default 256 bytes.
If CONFIG_USBDEV_TRACE is enabled (or CONFIG_DEBUG and CONFIG_DEBUG_USB), then
the example code will also manage the USB trace output. The amount of trace output
can be controlled using:
CONFIG_EXAMPLES_COMPOSITE_TRACEINIT
Show initialization events
CONFIG_EXAMPLES_COMPOSITE_TRACECLASS
Show class driver events
CONFIG_EXAMPLES_COMPOSITE_TRACETRANSFERS
Show data transfer events
CONFIG_EXAMPLES_COMPOSITE_TRACECONTROLLER
Show controller events
CONFIG_EXAMPLES_COMPOSITE_TRACEINTERRUPTS
Show interrupt-related events.
examples/dhcpd
^^^^^^^^^^^^^^
This examples builds a tiny DCHP server for the target system.
NOTE: For test purposes, this example can be built as a
host-based DHCPD server. This can be built as follows:
cd examples/dhcpd
make -f Makefile.host TOPDIR=<nuttx-directory>
NuttX configuration settings:
CONFIG_NET=y - Of course
CONFIG_NSOCKET_DESCRIPTORS - And, of course, you must allocate some
socket descriptors.
CONFIG_NET_UDP=y - UDP support is required for DHCP
(as well as various other UDP-related
configuration settings)
CONFIG_NET_BROADCAST=y - UDP broadcast support is needed.
CONFIG_EXAMPLE_DHCPD_NOMAC - (May be defined to use software assigned MAC)
CONFIG_EXAMPLE_DHCPD_IPADDR - Target IP address
CONFIG_EXAMPLE_DHCPD_DRIPADDR - Default router IP addess
CONFIG_EXAMPLE_DHCPD_NETMASK - Network mask
See also CONFIG_NETUTILS_DHCPD_* settings described elsewhere
and used in netutils/dhcpd/dhcpd.c. These settings are required
to described the behavior of the daemon.
Applications using this example will need to provide an appconfig
file in the configuration driver with instruction to build applications
like:
CONFIGURED_APPS += uiplib
examples/ftpc
^^^^^^^^^^^^^
This is a simple FTP client shell used to exercise the capabilities
of the FTPC library (apps/netutils/ftpc). This example is configured
to that it will only work as a "built-in" program that can be run from
NSH when CONFIG_NSH_BUILTIN_APPS is defined.
From NSH, the startup command sequence is as follows. This is only
an example, your configration could have different mass storage devices,
mount paths, and FTP directories:
nsh> mount -t vfat /dev/mmcsd0 /tmp # Mount the SD card at /tmp
nsh> cd /tmp # cd into the /tmp directory
nsh> ftpc xx.xx.xx.xx[:pp] # Start the FTP client
nfc> login <name> <password> # Log into the FTP server
nfc> help # See a list of FTP commands
where xx.xx.xx.xx is the IP address of the FTP server and pp is an
optional port number.
NOTE: By default, FTPC uses readline to get data from stdin. So your
appconfig file must have the following build path:
CONFIGURED_APPS += system/readline
NOTE: If you use the ftpc task over a telnet NSH connection, then you
should set the following configuration item:
CONFIG_EXAMPLES_FTPC_FGETS=y
By default, the FTPC client will use readline() to get characters from
the console. Readline includes and command-line editor and echos
characters received in stdin back through stdout. Neither of these
behaviors are desire-able if Telnet is used.
You may also want to define the following in your configuration file.
Otherwise, you will have not feeback about what is going on:
CONFIG_DEBUG=y
CONFIG_DEBUG_VERBOSE=y
CONFIG_DEBUG_FTPC=y
examples/ftpd
^^^^^^^^^^^^^^
This example exercises the FTPD daemon at apps/netuils/ftpd. Below are
configurations specific to the FTPD example (the FTPD daemon itself may
require other configuration options as well).
CONFIG_EXAMPLES_FTPD_PRIO - Priority of the FTP daemon.
Default: SCHED_PRIORITY_DEFAULT
CONFIG_EXAMPLES_FTPD_STACKSIZE - Stack size allocated for the
FTP daemon. Default: 2048
CONFIG_EXAMPLES_FTPD_NONETINIT - Define to suppress configuration of the
network by apps/examples/ftpd. You would need to suppress network
configuration if the network is configuration prior to running the
example.
NSH always initializes the network so if CONFIG_NSH_BUILTIN_APPS is
defined, so is CONFIG_EXAMPLES_FTPD_NONETINIT (se it does not explicitly
need to be defined in that case):
CONFIG_NSH_BUILTIN_APPS - Build the FTPD daemon example test as an
NSH built-in function. By default the FTPD daemon will be built
as a standalone application.
If CONFIG_EXAMPLES_FTPD_NONETINIT is not defined, then the following may
be specified to customized the network configuration:
CONFIG_EXAMPLE_FTPD_NOMAC - If the hardware has no MAC address of its
own, define this =y to provide a bogus address for testing.
CONFIG_EXAMPLE_FTPD_IPADDR - The target IP address. Default 10.0.0.2
CONFIG_EXAMPLE_FTPD_DRIPADDR - The default router address. Default
10.0.0.1
CONFIG_EXAMPLE_FTPD_NETMASK - The network mask. Default: 255.255.255.0
Other required configuration settings: Of course TCP networking support
is required. But here are a couple that are less obvious:
CONFIG_DISABLE_PTHREAD - pthread support is required
CONFIG_DISABLE_POLL - poll() support is required
Other FTPD configuration options thay may be of interest:
CONFIG_FTPD_VENDORID - The vendor name to use in FTP communications.
Default: "NuttX"
CONFIG_FTPD_SERVERID - The server name to use in FTP communications.
Default: "NuttX FTP Server"
CONFIG_FTPD_CMDBUFFERSIZE - The maximum size of one command. Default:
512 bytes.
CONFIG_FTPD_DATABUFFERSIZE - The size of the I/O buffer for data
transfers. Default: 2048 bytes.
CONFIG_FTPD_WORKERSTACKSIZE - The stacksize to allocate for each
FTP daemon worker thread. Default: 2048 bytes.
The appconfig file (apps/.config) should include:
CONFIGURED_APPS += examples/ftpd
CONFIGURED_APPS += netutils/uiplib
CONFIGURED_APPS += netutils/ftpd
examples/hello
^^^^^^^^^^^^^^
This is the mandatory, "Hello, World!!" example. It is little more
than examples/null with a single printf statement. Really useful only
for bringing up new NuttX architectures.
* CONFIG_EXAMPLES_HELLO_BUILTIN
Build the "Hello, World" example as an NSH built-in application.
examples/helloxx
^^^^^^^^^^^^^^^^
This is C++ version of the "Hello, World!!" example. It is intended
only to verify that the C++ compiler is functional, that basic C++
library suupport is available, and that class are instantiated
correctly.
NuttX configuration prerequisites:
CONFIG_HAVE_CXX -- Enable C++ Support
Optional NuttX configuration settings:
CONFIG_HAVE_CXXINITIALIZE -- Enable support for static constructors
(may not be available on all platforms).
NuttX configuration settings specific to this examp;le:
CONFIG_EXAMPLES_HELLOXX_BUILTIN -- Build the helloxx example as a
"built-in" that can be executed from the NSH command line.
CONFIG_EXAMPLES_HELLOXX_NOSTACKCONST - Set if the system does not
support construction of objects on the stack.
Also needed:
CONFIG_HAVE_CXX=y
And you may have to tinker with the following to get libxx to compile
properly:
CONFIG_CXX_NEWLONG=y or =n
The argument of the 'new' operators should take a type of size_t. But size_t
has an unknown underlying. In the nuttx sys/types.h header file, size_t
is typed as uint32_t (which is determined by architecture-specific logic).
But the C++ compiler may believe that size_t is of a different type resulting
in compilation errors in the operator. Using the underlying integer type
Instead of size_t seems to resolve the compilation issues.
examples/hidkbd
^^^^^^^^^^^^^^^^
This is a simple test to debug/verify the USB host HID keyboard class
driver.
CONFIG_EXAMPLES_HIDKBD_DEFPRIO - Priority of "waiter" thread.
CONFIG_EXAMPLES_HIDKBD_STACKSIZE - Stacksize of "waiter" thread.
examples/igmp
^^^^^^^^^^^^^
This is a trivial test of the NuttX IGMP capability. It present it
does not do much of value -- Much more is needed in order to verify
the IGMP features!
* CONFIG_EXAMPLE_IGMP_NOMAC
Set if the hardware has no MAC address; one will be assigned
* CONFIG_EXAMPLE_IGMP_IPADDR
Target board IP address
* CONFIG_EXAMPLE_IGMP_DRIPADDR
Default router address
* CONFIG_EXAMPLE_IGMP_NETMASK
Network mask
* CONFIG_EXAMPLE_IGMP_GRPADDR
Multicast group address
Applications using this example will need to provide an appconfig
file in the configuration driver with instruction to build applications
like:
CONFIGURED_APPS += uiplib
examples/lcdrw
^^^^^^^^^^^^^^
This example may be used to verify if you can or cannot read data
correctly from an LCD interface. At present, this supports only LCDs
with RGB565 color format.
* CONFIG_EXAMPLES_LDCRW_DEVNO
LCD device number. Default: 0
* CONFIG_EXAMPLES_LDCRW_XRES
LCD X resolution. Default: 240
* CONFIG_EXAMPLES_LDCRW_YRES
LCD Y resolution. Default: 320
examples/mm
^^^^^^^^^^^
This is a simplified version of the "built-in" memory manager test of
mm/mm_test.c. It is simplified because it does not have access to the
internals of the memory manager as does mm/mm_test.c, but it has the
advantage that it runs in the actual NuttX tasking environment (the
mm/mm_test.c only runs in a PC simulation environment).
examples/mount
^^^^^^^^^^^^^^
This contains a simple test of filesystem mountpoints.
* CONFIG_EXAMPLES_MOUNT_DEVNAME
The name of the user-provided block device to mount.
If CONFIG_EXAMPLES_MOUNT_DEVNAME is not provided, then
a RAM disk will be configured.
* CONFIG_EXAMPLES_MOUNT_NSECTORS
The number of "sectors" in the RAM disk used when
CONFIG_EXAMPLES_MOUNT_DEVNAME is not defined.
* CONFIG_EXAMPLES_MOUNT_SECTORSIZE
The size of each sectors in the RAM disk used when
CONFIG_EXAMPLES_MOUNT_DEVNAME is not defined.
* CONFIG_EXAMPLES_MOUNT_RAMDEVNO
The RAM device minor number used to mount the RAM disk used
when CONFIG_EXAMPLES_MOUNT_DEVNAME is not defined. The
default is zero (meaning that "/dev/ram0" will be used).
examples/netttest
^^^^^^^^^^^^^^^^^
This is a simple network test for verifying client- and server-
functionality in a TCP/IP connection.
Applications using this example will need to provide an appconfig
file in the configuration driver with instruction to build applications
like:
CONFIGURED_APPS += uiplib
examples/nsh
^^^^^^^^^^^^
This directory provides an example of how to configure and use
the NuttShell (NSH) application. NSH is a simple shell
application. NSH is described in its own README located at
apps/nshlib/README.txt
Applications using this example will need to provide an appconfig
file in the configuration driver with instruction to build applications
like:
CONFIGURED_APPS += nshlib
NOTE: If the NSH serial console is used, then following is also
required to build the readline() library:
CONFIGURED_APPS += system/readline
And if networking is included:
CONFIGURED_APPS += uiplib
CONFIGURED_APPS += dhcpc
CONFIGURED_APPS += resolv
CONFIGURED_APPS += tftp
CONFIGURED_APPS += webclient
If the Telnet console is enabled, then the appconfig file (apps/.config)
should also include:
CONFIGURED_APPS += netutils/telnetd
Also if the Telnet console is enabled, make sure that you have the
following set in the NuttX configuration file or else the performance
will be very bad (because there will be only one character per TCP
transfer):
CONFIG_STDIO_BUFFER_SIZE - Some value >= 64
CONFIG_STDIO_LINEBUFFER=y
examples/nx
^^^^^^^^^^^
This directory contains a simple test of a subset of the NX APIs
defined in include/nuttx/nx/nx.h. The following configuration options
can be selected:
CONFIG_EXAMPLES_NX_BUILTIN -- Build the NX example as a "built-in"
that can be executed from the NSH command line
CONFIG_EXAMPLES_NX_VPLANE -- The plane to select from the frame-
buffer driver for use in the test. Default: 0
CONFIG_EXAMPLES_NX_DEVNO - The LCD device to select from the LCD
driver for use in the test: Default: 0
CONFIG_EXAMPLES_NX_BGCOLOR -- The color of the background. Default depends on
CONFIG_EXAMPLES_NX_BPP.
CONFIG_EXAMPLES_NX_COLOR1 -- The color of window 1. Default depends on
CONFIG_EXAMPLES_NX_BPP.
CONFIG_EXAMPLES_NX_COLOR2 -- The color of window 2. Default depends on
CONFIG_EXAMPLES_NX_BPP.
CONFIG_EXAMPLES_NX_TBCOLOR -- The color of the toolbar. Default depends on
CONFIG_EXAMPLES_NX_BPP.
CONFIG_EXAMPLES_NX_FONTID - Selects the font (see font ID numbers in
include/nuttx/nx/nxfonts.h)
CONFIG_EXAMPLES_NX_FONTCOLOR -- The color of the fonts. Default depends on
CONFIG_EXAMPLES_NX_BPP.
CONFIG_EXAMPLES_NX_BPP -- Pixels per pixel to use. Valid options
include 2, 4, 8, 16, 24, and 32. Default is 32.
CONFIG_EXAMPLES_NX_RAWWINDOWS -- Use raw windows; Default is to
use pretty, framed NXTK windows with toolbars.
CONFIG_EXAMPLES_NX_EXTERNINIT - The driver for the graphics device on
this platform requires some unusual initialization. This is the
for, for example, SPI LCD/OLED devices. If this configuration is
selected, then the platform code must provide an LCD initialization
function with a prototype like:
#ifdef CONFIG_NX_LCDDRIVER
FAR struct lcd_dev_s *up_nxdrvinit(unsigned int devno);
#else
FAR struct fb_vtable_s *up_nxdrvinit(unsigned int devno);
#endif
This test can be performed with either the single-user version of
NX or with the multiple user version of NX selected with CONFIG_NX_MULTIUSER.
If CONFIG_NX_MULTIUSER is defined, then the following configuration
options also apply:
CONFIG_EXAMPLES_NX_STACKSIZE -- The stacksize to use when creating
the NX server. Default 2048
CONFIG_EXAMPLES_NX_CLIENTPRIO -- The client priority. Default: 100
CONFIG_EXAMPLES_NX_SERVERPRIO -- The server priority. Default: 120
CONFIG_EXAMPLES_NX_LISTENERPRIO -- The priority of the event listener
thread. Default 80.
CONFIG_EXAMPLES_NX_NOTIFYSIGNO -- The signal number to use with
nx_eventnotify(). Default: 4
If CONFIG_NX_MULTIUSER is defined, then the example also expects the
following settings and will generate an error if they are not as expected:
CONFIG_DISABLE_MQUEUE=n
CONFIG_DISABLE_SIGNALS=n
CONFIG_DISABLE_PTHREAD=n
CONFIG_NX_BLOCKING=y
examples/nxconsole
^^^^^^^^^^^^^^^^^^
This directory contains yet another version of the NuttShell (NSH). This
version uses the NX console device defined in include/nuttx/nx/nxconsole.h
for output. the result is that the NSH input still come from the standard
console input (probably a serial console). But the text output will go to
an NX winbdow. Prerequisite configuration settings for this test include:
CONFIG_NX=y -- NX graphics must be enabled
CONFIG_NXCONSOLE=y -- The NX console driver must be built
CONFIG_NX_MULTIUSER=y -- NX multi-user support must be enabled.
CONFIG_DISABLE_MQUEUE=n -- Message queue support must be available.
CONFIG_DISABLE_SIGNALS=n -- Signals are needed
CONFIG_DISABLE_PTHREAD=n -- pthreads are needed
CONFIG_NX_BLOCKING=y -- pthread APIs must be blocking
CONFIG_NSH_CONSOLE=y -- NSH must be configured to use a console.
The following configuration options can be selected to customize the
test:
CONFIG_EXAMPLES_NXCON_VPLANE -- The plane to select from the frame-
buffer driver for use in the test. Default: 0
CONFIG_EXAMPLES_NXCON_DEVNO - The LCD device to select from the LCD
driver for use in the test: Default: 0
CONFIG_EXAMPLES_NXCON_BGCOLOR -- The color of the background. Default
Default is a darker royal blue.
CONFIG_EXAMPLES_NXCON_WCOLOR -- The color of the window. Default is a light
slate blue.
CONFIG_EXAMPLES_NXCON_FONTID -- Selects the font (see font ID numbers in
include/nuttx/nx/nxfonts.h)
CONFIG_EXAMPLES_NXCON_FONTCOLOR -- The color of the fonts. Default is
black.
CONFIG_EXAMPLES_NXCON_BPP -- Pixels per pixel to use. Valid options
include 2, 4, 8, 16, 24, and 32. Default is 32.
CONFIG_EXAMPLES_NXCON_TOOLBAR_HEIGHT -- The height of the toolbar.
Default: 16
CONFIG_EXAMPLES_NXCON_TBCOLOR -- The color of the toolbar. Default is
a medium grey.
CONFIG_EXAMPLES_NXCON_EXTERNINIT - The driver for the graphics device on
this platform requires some unusual initialization. This is the
for, for example, SPI LCD/OLED devices. If this configuration is
selected, then the platform code must provide an LCD initialization
function with a prototype like:
#ifdef CONFIG_NX_LCDDRIVER
FAR struct lcd_dev_s *up_nxdrvinit(unsigned int devno);
#else
FAR struct fb_vtable_s *up_nxdrvinit(unsigned int devno);
#endif
CONFIG_EXAMPLES_NXCON_MINOR -- The NX console device minor number.
Default is 0 corresponding to /dev/nxcon0
CONFIG_EXAMPLES_NXCON_DEVNAME -- The quoated, full path to the
NX console device corresponding to CONFIG_EXAMPLES_NXCON_MINOR.
Default: "/dev/nxcon0"
CONFIG_EXAMPLES_NXCONSOLE_PRIO - Priority of the NxConsole task.
Default: SCHED_PRIORITY_DEFAULT
CONFIG_EXAMPLES_NXCONSOLE_STACKSIZE - Stack size allocated for the
NxConsole task. Default: 2048
The following configuration settings determine how to set up the NX
server (CONFIG_NX_MULTIUSER):
CONFIG_EXAMPLES_NXCON_STACKSIZE -- The stacksize to use when creating
the NX server. Default 2048
CONFIG_EXAMPLES_NXCON_CLIENTPRIO -- The client priority. Default: 100
CONFIG_EXAMPLES_NXCON_SERVERPRIO -- The server priority. Default: 120
CONFIG_EXAMPLES_NXCON_LISTENERPRIO -- The priority of the event listener
thread. Default 80.
CONFIG_EXAMPLES_NXCON_NOTIFYSIGNO -- The signal number to use with
nx_eventnotify(). Default: 4
examples/nxffs
^^^^^^^^^^^^^^
This is a test of the NuttX NXFFS FLASH file system. This is an NXFFS
stress test and beats on the file system very hard. It should only
be used in a simulation environment! Putting this NXFFS test on real
hardware will most likely destroy your FLASH. You have been warned.
examples/nxflat
^^^^^^^^^^^^^^^
This example builds a small NXFLAT test case. This includes several
test programs under examples/nxflat tests. These tests are build using
the NXFLAT format and installed in a ROMFS file system. At run time,
each program in the ROMFS file system is executed. Requires CONFIG_NXFLAT.
examplex/nxhello
^^^^^^^^^^^^^^^^
A very simple graphics example that just says "Hello, World!" in the
center of the display.
The following configuration options can be selected:
CONFIG_EXAMPLES_NXHELLO_BUILTIN -- Build the NXHELLO example as a "built-in"
that can be executed from the NSH command line
CONFIG_EXAMPLES_NXHELLO_VPLANE -- The plane to select from the frame-
buffer driver for use in the test. Default: 0
CONFIG_EXAMPLES_NXHELLO_DEVNO - The LCD device to select from the LCD
driver for use in the test: Default: 0
CONFIG_EXAMPLES_NXHELLO_BGCOLOR -- The color of the background. Default
depends on CONFIG_EXAMPLES_NXHELLO_BPP.
CONFIG_EXAMPLES_NXHELLO_FONTID - Selects the font (see font ID numbers in
include/nuttx/nx/nxfonts.h)
CONFIG_EXAMPLES_NXHELLO_FONTCOLOR -- The color of the fonts used in the
background window. Default depends on CONFIG_EXAMPLES_NXHELLO_BPP.
CONFIG_EXAMPLES_NXHELLO_BPP -- Pixels per pixel to use. Valid options
include 2, 4, 8, 16, 24, and 32. Default is 32.
CONFIG_EXAMPLES_NXHELLO_EXTERNINIT - The driver for the graphics device on
this platform requires some unusual initialization. This is the
for, for example, SPI LCD/OLED devices. If this configuration is
selected, then the platform code must provide an LCD initialization
function with a prototype like:
#ifdef CONFIG_NX_LCDDRIVER
FAR struct lcd_dev_s *up_nxdrvinit(unsigned int devno);
#else
FAR struct fb_vtable_s *up_nxdrvinit(unsigned int devno);
#endif
examples/nximage
^^^^^^^^^^^^^^^^
This is a simple example that just puts the NuttX logo image in the center
of the display. This only works for RGB23 (888), RGB16 (656), RGB8 (332),
and 8-bit greyscale for now.
CONFIG_EXAMPLES_NXIMAGE_BUILTIN -- Build the NXIMAGE example as a "built-in"
that can be executed from the NSH command line
CONFIG_EXAMPLES_NXIMAGE_VPLANE -- The plane to select from the frame-
buffer driver for use in the test. Default: 0
CONFIG_EXAMPLES_NXIMAGE_DEVNO - The LCD device to select from the LCD
driver for use in the test: Default: 0
CONFIG_EXAMPLES_NXIMAGE_BPP -- Pixels per pixel to use. Valid options
include 8, 16, and 24. Default is 16.
CONFIG_EXAMPLES_NXIMAGE_XSCALEp5, CONFIG_EXAMPLES_NXIMAGE_XSCALE1p5,
CONFIG_EXAMPLES_NXIMAGE_XSCALE2p0 -- The logo image width is 160 columns.
One of these may be defined to rescale the image horizontally by .5, 1.5,
or 2.0.
CONFIG_EXAMPLES_NXIMAGE_YSCALEp5, CONFIG_EXAMPLES_NXIMAGE_YSCALE1p5,
CONFIG_EXAMPLES_NXIMAGE_YSCALE2p0 -- The logo image height is 160 rows.
One of these may be defined to rescale the image vertically by .5, 1.5,
or 2.0.
CONFIG_EXAMPLES_NXIMAGE_GREYSCALE -- Grey scale image. Default: RGB.
CONFIG_EXAMPLES_NXIMAGE_EXTERNINIT - The driver for the graphics device on
this platform requires some unusual initialization. This is the
for, for example, SPI LCD/OLED devices. If this configuration is
selected, then the platform code must provide an LCD initialization
function with a prototype like:
#ifdef CONFIG_NX_LCDDRIVER
FAR struct lcd_dev_s *up_nxdrvinit(unsigned int devno);
#else
FAR struct fb_vtable_s *up_nxdrvinit(unsigned int devno);
#endif
How was that run-length encoded image produced?
a. I used GIMP output the image as a .c file.
b. I added som C logic to palette-ize the RGB image in the GIMP .c file
c. Then I add some simple run-length encoding to palette-ized image.
NOTE: As of this writing, most of the pixel depth, scaling options, and
combinations thereof have not been tested.
examplex/nxlines
^^^^^^^^^^^^^^^^
A very simple graphics example that just exercised the NX line drawing
logic.
The following configuration options can be selected:
CONFIG_EXAMPLES_NXLINES_BUILTIN -- Build the NXLINES example as a "built-in"
that can be executed from the NSH command line
CONFIG_EXAMPLES_NXLINES_VPLANE -- The plane to select from the frame-
buffer driver for use in the test. Default: 0
CONFIG_EXAMPLES_NXLINES_DEVNO - The LCD device to select from the LCD
driver for use in the test: Default: 0
CONFIG_EXAMPLES_NXLINES_BGCOLOR -- The color of the background. Default
depends on CONFIG_EXAMPLES_NXLINES_BPP.
CONFIG_EXAMPLES_NXLINES_LINEWIDTH - Selects the width of the lines in
pixels (default: 16)
CONFIG_EXAMPLES_NXLINES_LINECOLOR -- The color of the central lines drawn
in the background window. Default depends on CONFIG_EXAMPLES_NXLINES_BPP
(there really is no meaningful default).
CONFIG_EXAMPLES_NXLINES_BORDERWIDTH -- The width of the circular border
drawn in the background window. (default: 4).
CONFIG_EXAMPLES_NXLINES_BORDERCOLOR -- The color of the circular border
drawn in the background window. Default depends on CONFIG_EXAMPLES_NXLINES_BPP
(there really is no meaningful default).
CONFIG_EXAMPLES_NXLINES_CIRCLECOLOR -- The color of the circular region
filled in the background window. Default depends on CONFIG_EXAMPLES_NXLINES_BPP
(there really is no meaningful default).
CONFIG_EXAMPLES_NXLINES_BORDERCOLOR -- The color of the lines drawn in the
background window. Default depends on CONFIG_EXAMPLES_NXLINES_BPP (there
really is no meaningful default).
CONFIG_EXAMPLES_NXLINES_BPP -- Pixels per pixel to use. Valid options
include 2, 4, 8, 16, 24, and 32. Default is 16.
CONFIG_EXAMPLES_NXLINES_EXTERNINIT - The driver for the graphics device on
this platform requires some unusual initialization. This is the
for, for example, SPI LCD/OLED devices. If this configuration is
selected, then the platform code must provide an LCD initialization
function with a prototype like:
#ifdef CONFIG_NX_LCDDRIVER
FAR struct lcd_dev_s *up_nxdrvinit(unsigned int devno);
#else
FAR struct fb_vtable_s *up_nxdrvinit(unsigned int devno);
#endif
examples/nxtext
^^^^^^^^^^^^^^^
This directory contains another simple test of a subset of the NX APIs
defined in include/nuttx/nx/nx.h. This text focuses on text displays on
the dispaly background combined with pop-up displays over the text.
The text display will continue to update while the pop-up is visible.
NOTE: This example will *only* work with FB drivers and with LCD
drivers that support reading the contents of the internal LCD memory
*unless* you define CONFIG_EXAMPLES_NXTEXT_NOGETRUN. If you notice
garbage on the display or a failure at the point where the display
should scroll, it is probably because you have an LCD driver that is
write-only.
The following configuration options can be selected:
CONFIG_EXAMPLES_NXTEXT_BUILTIN -- Build the NXTEXT example as a "built-in"
that can be executed from the NSH command line
CONFIG_EXAMPLES_NXTEXT_VPLANE -- The plane to select from the frame-
buffer driver for use in the test. Default: 0
CONFIG_EXAMPLES_NXTEXT_DEVNO - The LCD device to select from the LCD
driver for use in the test: Default: 0
CONFIG_EXAMPLES_NXTEXT_BGCOLOR -- The color of the background. Default
depends on CONFIG_EXAMPLES_NXTEXT_BPP.
CONFIG_EXAMPLES_NXTEXT_BGFONTID - Selects the font to use in the
background text (see font ID numbers in include/nuttx/nx/nxfonts.h)
CONFIG_EXAMPLES_NXTEXT_BGFONTCOLOR -- The color of the fonts used in the
background window. Default depends on CONFIG_EXAMPLES_NXTEXT_BPP.
CONFIG_EXAMPLES_NXTEXT_PUCOLOR -- The color of the pop-up window. Default
depends on CONFIG_EXAMPLES_NXTEXT_BPP.
CONFIG_EXAMPLES_NXTEXT_PUFONTID - Selects the font to use in the pop-up
windows (see font ID numbers in include/nuttx/nx/nxfonts.h)
CONFIG_EXAMPLES_NXTEXT_PUFONTCOLOR -- The color of the fonts used in the
background window. Default depends on CONFIG_EXAMPLES_NXTEXT_BPP.
CONFIG_EXAMPLES_NXTEXT_BPP -- Pixels per pixel to use. Valid options
include 2, 4, 8, 16, 24, and 32. Default is 32.
CONFIG_EXAMPLES_NXTEXT_NOGETRUN -- If your display is read-only OR if
reading is not reliable, then select this configuration to avoid
reading from the display.
CONFIG_EXAMPLES_NXTEXT_EXTERNINIT - The driver for the graphics device on
this platform requires some unusual initialization. This is the
for, for example, SPI LCD/OLED devices. If this configuration is
selected, then the platform code must provide an LCD initialization
function with a prototype like:
#ifdef CONFIG_NX_LCDDRIVER
FAR struct lcd_dev_s *up_nxdrvinit(unsigned int devno);
#else
FAR struct fb_vtable_s *up_nxdrvinit(unsigned int devno);
#endif
CONFIG_EXAMPLES_NXTEXT_BMCACHE - The maximum number of characters that
can be put in the background window. Default is 128.
CONFIG_EXAMPLES_NXTEXT_GLCACHE - The maximum nuber of pre-rendered
fonts that can be retained for the background window.
This test can be performed with either the single-user version of
NX or with the multiple user version of NX selected with CONFIG_NX_MULTIUSER.
If CONFIG_NX_MULTIUSER is defined, then the following configuration
options also apply:
CONFIG_EXAMPLES_NXTEXT_STACKSIZE -- The stacksize to use when creating
the NX server. Default 2048
CONFIG_EXAMPLES_NXTEXT_CLIENTPRIO -- The client priority. Default: 100
CONFIG_EXAMPLES_NXTEXT_SERVERPRIO -- The server priority. Default: 120
CONFIG_EXAMPLES_NXTEXT_LISTENERPRIO -- The priority of the event listener
thread. Default 80.
CONFIG_EXAMPLES_NXTEXT_NOTIFYSIGNO -- The signal number to use with
nx_eventnotify(). Default: 4
If CONFIG_NX_MULTIUSER is defined, then the example also expects the
following settings and will generate an error if they are not as expected:
CONFIG_DISABLE_MQUEUE=n
CONFIG_DISABLE_SIGNALS=n
CONFIG_DISABLE_PTHREAD=n
CONFIG_NX_BLOCKING=y
examples/null
^^^^^^^^^^^^^
This is the do nothing application. It is only used for bringing
up new NuttX architectures in the most minimal of environments.
examples/ostest
^^^^^^^^^^^^^^^
This is the NuttX 'qualification' suite. It attempts to exercise
a broad set of OS functionality. Its coverage is not very extensive
as of this writing, but it is used to qualify each NuttX release.
The behavior of the ostest can be modified with the following
settings in the configs/<board-name>/defconfig file:
* CONFIG_EXAMPLES_OSTEST_BUILTIN
Build the OS test example as an NSH built-in application.
* CONFIG_EXAMPLES_OSTEST_LOOPS
Used to control the number of executions of the test. If
undefined, the test executes one time. If defined to be
zero, the test runs forever.
* CONFIG_EXAMPLES_OSTEST_STACKSIZE
Used to create the ostest task. Default is 8192.
* CONFIG_EXAMPLES_OSTEST_NBARRIER_THREADS
Specifies the number of threads to create in the barrier
test. The default is 8 but a smaller number may be needed on
systems without sufficient memory to start so many threads.
examples/pashello
^^^^^^^^^^^^^^^^^
This is "Hello, World" implemented via the Pascal P-Code interpreter. In
order to use this example, you must first download and install the
NuttX pascal module. After unpacking the pascal module, you can find
installation instructions in pascal/nuttx/README.txt.
The correct install location for the NuttX examples and build files is
apps/interpreters.
examples/pipe
^^^^^^^^^^^^^
A test of the mkfifo() and pipe() APIs.
* CONFIG_EXAMPLES_PIPE_STACKSIZE
Sets the size of the stack to use when creating the child tasks.
The default size is 1024.
examples/poll
^^^^^^^^^^^^^
A test of the poll() and select() APIs using FIFOs and, if available,
stdin, and a TCP/IP socket. In order to build this test, you must the
following selected in your NuttX configuration file:
CONFIG_NFILE_DESCRIPTORS - Defined to be greater than 0
CONFIG_DISABLE_POLL - NOT defined
In order to use the TCP/IP select test, you have also the following
additional things selected in your NuttX configuration file:
CONFIG_NET - Defined for general network support
CONFIG_NET_TCP - Defined for TCP/IP support
CONFIG_NSOCKET_DESCRIPTORS - Defined to be greater than 0
CONFIG_NET_NTCP_READAHEAD_BUFFERS - Defined to be greater than zero
CONFIG_EXAMPLE_POLL_NOMAC - (May be defined to use software assigned MAC)
CONFIG_EXAMPLE_POLL_IPADDR - Target IP address
CONFIG_EXAMPLE_POLL_DRIPADDR - Default router IP addess
CONFIG_EXAMPLE_POLL_NETMASK - Network mask
In order to for select to work with incoming connections, you
must also select:
CONFIG_NET_TCPBACKLOG - Incoming connections pend in a backlog until accept() is called.
In additional to the target device-side example, there is also
a host-side application in this directory. It can be compiled under
Linux or Cygwin as follows:
cd examples/usbserial
make -f Makefile.host TOPDIR=<nuttx-directory> TARGETIP=<target-ip>
Where <target-ip> is the IP address of your target board.
This will generate a small program called 'host'. Usage:
1. Build the examples/poll target program with TCP/IP poll support
and start the target.
3. Then start the host application:
./host
The host and target will exchange are variety of small messages. Each
message sent from the host should cause the select to return in target.
The target example should read the small message and send it back to
the host. The host should then receive the echo'ed message.
If networking is enabled, applications using this example will need to
provide an appconfig file in the configuration driver with instruction
to build applications like:
CONFIGURED_APPS += uiplib
examples/pwm
^^^^^^^^^^^^
A test of a PWM device driver. It simply enables a pulsed output for
a specified frequency and duty for a specified period of time. This
example can ONLY be built as an NSH built-in function.
This test depends on these specific PWM/NSH configurations settings (your
specific PWM settings might require additional settings).
CONFIG_PWM - Enables PWM support.
CONFIG_EXAMPLES_PWM_COUNT - Enabled PWM pulse count support (if the
hardware supports it).
CONFIG_NSH_BUILTIN_APPS - Build the PWM test as an NSH built-in function.
Default: Not built! The example can only be used as an NSH built-in
application
Specific configuration options for this example include:
CONFIG_EXAMPLES_PWM_DEVPATH - The path to the PWM device. Default: /dev/pwm0
CONFIG_EXAMPLES_PWM_FREQUENCY - The initial PWM frequency. Default: 100 Hz
CONFIG_EXAMPLES_PWM_DUTYPCT - The initial PWM duty as a percentage. Default: 50%
CONFIG_EXAMPLES_PWM_DURATION - The initial PWM pulse train duration in seconds.
Used only if the current pulse count is zero (pulse count is only supported
if CONFIG_PWM_PULSECOUNT is defined). Default: 5 seconds
CONFIG_EXAMPLES_PWM_PULSECOUNT - The initial PWM pulse count. This option is
only available if CONFIG_PWM_PULSECOUNT is non-zero. Default: 0 (i.e., use
the duration, not the count).
examples/qencoder
^^^^^^^^^^^^^^^^^
This example is a simple test of a Quadrature Encoder driver. It simply reads
positional data from the encoder and prints it.,
This test depends on these specific QE/NSH configurations settings (your
specific PWM settings might require additional settings).
CONFIG_QENCODER - Enables quadrature encoder support (upper-half driver).
CONFIG_NSH_BUILTIN_APPS - Build the QE test as an NSH built-in function.
Default: Built as a standalone progrem.
Additional configuration options will mostly likely be required for the board-
specific lower-half driver. See the README.txt file in your board configuration
directory.
Specific configuration options for this example include:
CONFIG_EXAMPLES_QENCODER_DEVPATH - The path to the QE device. Default:
/dev/qe0
CONFIG_EXAMPLES_QENCODER_NSAMPLES - If CONFIG_NSH_BUILTIN_APPS
is defined, then the number of samples is provided on the command line
and this value is ignored. Otherwise, this number of samples is
collected and the program terminates. Default: Samples are collected
indefinitely.
CONFIG_EXAMPLES_QENCODER_DELAY - This value provides the delay (in
milliseonds) between each sample. If CONFIG_NSH_BUILTIN_APPS
is defined, then this value is the default delay if no other delay is
provided on the command line. Default: 100 milliseconds
examples/rgmp
^^^^^^^^^^^^^
RGMP stands for RTOS and GPOS on Multi-Processor. RGMP is a project for
running GPOS and RTOS simultaneously on multi-processor platforms. You can
port your favorite RTOS to RGMP together with an unmodified Linux to form a
hybrid operating system. This makes your application able to use both RTOS
and GPOS features.
See http://rgmp.sourceforge.net/wiki/index.php/Main_Page for further
At present, the RGMP example folder contains only an empty main.c file.
examples/romfs
^^^^^^^^^^^^^^
This example exercises the romfs filesystem. Configuration options
include:
* CONFIG_EXAMPLES_ROMFS_RAMDEVNO
The minor device number to use for the ROM disk. The default is
1 (meaning /dev/ram1)
* CONFIG_EXAMPLES_ROMFS_SECTORSIZE
The ROM disk sector size to use. Default is 64.
* CONFIG_EXAMPLES_ROMFS_MOUNTPOINT
The location to mount the ROM disk. Deafault: "/usr/local/share"
examples/sendmail
^^^^^^^^^^^^^^^^^
This examples exercises the uIP SMTP logic by sending a test message
to a selected recipient. This test can also be built to execute on
the Cygwin/Linux host environment:
cd examples/sendmail
make -f Makefile.host TOPDIR=<nuttx-directory>
Settings unique to this example include:
CONFIG_EXAMPLE_SENDMAIL_NOMAC - May be defined to use software assigned MAC (optional)
CONFIG_EXAMPLE_SENDMAIL_IPADDR - Target IP address (required)
CONFIG_EXAMPLE_SENDMAIL_DRIPADDR - Default router IP addess (required)
CONFIG_EXAMPLE_SENDMAILT_NETMASK - Network mask (required)
CONFIG_EXAMPLE_SENDMAIL_RECIPIENT - The recipient of the email (required)
CONFIG_EXAMPLE_SENDMAIL_SENDER - Optional. Default: "nuttx-testing@example.com"
CONFIG_EXAMPLE_SENDMAIL_SUBJECT - Optional. Default: "Testing SMTP from NuttX"
CONFIG_EXAMPLE_SENDMAIL_BODY - Optional. Default: "Test message sent by NuttX"
NOTE: This test has not been verified on the NuttX target environment.
As of this writing, unit-tested in the Cygwin/Linux host environment.
NOTE 2: This sendmail example only works for the simplest of
environments. Virus protection software on your host may have
to be disabled to allow you to send messages. Only very open,
unprotected recipients can be used. Most will protect themselves
from this test email because it looks like SPAM.
Applications using this example will need to provide an appconfig
file in the configuration driver with instruction to build applications
like:
CONFIGURED_APPS += uiplib
CONFIGURED_APPS += smtp
examples/serloop
^^^^^^^^^^^^^^^^
This is a mindlessly simple loopback test on the console. Useful
for testing new serial drivers. Configuration options include:
* CONFIG_EXAMPLES_SERLOOP_BUFIO
Use C buffered I/O (getchar/putchar) vs. raw console I/O
(read/read).
examples/telnetd
^^^^^^^^^^^^^^^^
This directory contains a functional port of the tiny uIP shell. In
the NuttX environment, the NuttShell (at apps/nshlib) supercedes this
tiny shell and also supports telnetd.
CONFIG_EXAMPLES_TELNETD_DAEMONPRIO - Priority of the Telnet daemon.
Default: SCHED_PRIORITY_DEFAULT
CONFIG_EXAMPLES_TELNETD_DAEMONSTACKSIZE - Stack size allocated for the
Telnet daemon. Default: 2048
CONFIG_EXAMPLES_TELNETD_CLIENTPRIO- Priority of the Telnet client.
Default: SCHED_PRIORITY_DEFAULT
CONFIG_EXAMPLES_TELNETD_CLIENTSTACKSIZE - Stack size allocated for the
Telnet client. Default: 2048
CONFIG_EXAMPLE_TELNETD_NOMAC - If the hardware has no MAC address of its
own, define this =y to provide a bogus address for testing.
CONFIG_EXAMPLE_TELNETD_IPADDR - The target IP address. Default 10.0.0.2
CONFIG_EXAMPLE_TELNETD_DRIPADDR - The default router address. Default
10.0.0.1
CONFIG_EXAMPLE_TELNETD_NETMASK - The network mask. Default: 255.255.255.0
The appconfig file (apps/.config) should include:
CONFIGURED_APPS += examples/telnetd
CONFIGURED_APPS += netutils/uiplib
CONFIGURED_APPS += netutils/telnetd
Also, make sure that you have the following set in the NuttX configuration
file or else the performance will be very bad (because there will be only
one character per TCP transfer):
CONFIG_STDIO_BUFFER_SIZE - Some value >= 64
CONFIG_STDIO_LINEBUFFER=y
examples/thttpd
^^^^^^^^^^^^^^^
An example that builds netutils/thttpd with some simple NXFLAT
CGI programs. see configs/README.txt for most THTTPD settings.
In addition to those, this example accepts:
CONFIG_EXAMPLE_THTTPD_NOMAC - (May be defined to use software assigned MAC)
CONFIG_EXAMPLE_THTTPD_DRIPADDR - Default router IP addess
CONFIG_EXAMPLE_THTTPD_NETMASK - Network mask
Applications using this example will need to provide an appconfig
file in the configuration directory with instruction to build applications
like:
CONFIGURED_APPS += uiplib
CONFIGURED_APPS += thttpd
examples/tiff
^^^^^^^^^^^^^
This is a simple unit test for the TIFF creation library at apps/graphic/tiff.
It is configured to work in the Linux user-mode simulation and has not been
tested in any other environment. Since the example also depends on some
other logic to mount a file system, currently it will only work as an NSH
built-on, i.e., if the following is defined:
CONFIG_NSH_BUILTIN_APPS=y
CONFIG_EXAMPLES_TIFF_BUILTIN=y
At a miniumum, to run in an embedded environment, you will probably have to
change the configured paths to the TIFF files defined in the example.
CONFIG_EXAMPLES_TIFF_OUTFILE - Name of the resulting TIFF file. Default is
"/tmp/result.tif"
CONFIG_EXAMPLES_TIFF_TMPFILE1/2 - Names of two temporaries files that
will be used in the file creation. Defaults are "/tmp/tmpfile1.dat" and
"/tmp/tmpfile2.dat"
The following must also be defined in your apps/ configuration file:
CONFIGURED_APPS += examples/tiff
CONFIGURED_APPS += graphics/tiff
examples/touchscreen
^^^^^^^^^^^^^^^^^^^^
This configuration implements a simple touchscreen test at
apps/examples/touchscreen. This test will create an empty X11 window
and will print the touchscreen output as it is received from the
simulated touchscreen driver.
CONFIG_EXAMPLES_TOUCHSCREEN_BUILTIN - Build the touchscreen test as
an NSH built-in function. Default: Built as a standalone problem
CONFIG_EXAMPLES_TOUCHSCREEN_MINOR - The minor device number. Minor=N
correspnds to touchscreen device /dev/input0. Note this value must
with CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH. Default 0.
CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH - The path to the touchscreen
device. This must be consistent with CONFIG_EXAMPLES_TOUCHSCREEN_MINOR.
Default: "/dev/input0"
CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES - If CONFIG_EXAMPLES_TOUCHSCREEN_BUILTIN
is defined, then the number of samples is provided on the command line
and this value is ignored. Otherwise, this number of samples is
collected and the program terminates. Default: Samples are collected
indefinitely.
The following additional configurations must be set in the NuttX
configuration file:
CONFIG_INPUTP=y
(Plus any touchscreen-specific settings).
The following must also be defined in your apps configuration file:
CONFIGURED_APPS += examples/tiff
CONFIGURED_APPS += graphics/tiff
The board-specific logic must provide the following interfaces that will
be called by the example in order to initialize and uninitialize the
touchscreen hardware:
int arch_tcinitialize(int minor);
int arch_tcuninitialize(void);
examples/udp
^^^^^^^^^^^^
This is a simple network test for verifying client- and server-
functionality over UDP.
Applications using this example will need to provide an appconfig
file in the configuration driver with instruction to build applications
like:
CONFIGURED_APPS += uiplib
examples/uip
^^^^^^^^^^^^
This is a port of uIP tiny webserver example application. Settings
specific to this example include:
CONFIG_EXAMPLE_UIP_NOMAC - (May be defined to use software assigned MAC)
CONFIG_EXAMPLE_UIP_IPADDR - Target IP address
CONFIG_EXAMPLE_UIP_DRIPADDR - Default router IP addess
CONFIG_EXAMPLE_UIP_NETMASK - Network mask
CONFIG_EXAMPLE_UIP_DHCPC - Select to get IP address via DHCP
If you use DHCPC, then some special configuration network options are
required. These include:
CONFIG_NET=y - Of course
CONFIG_NSOCKET_DESCRIPTORS - And, of course, you must allocate some
socket descriptors.
CONFIG_NET_UDP=y - UDP support is required for DHCP
(as well as various other UDP-related
configuration settings).
CONFIG_NET_BROADCAST=y - UDP broadcast support is needed.
CONFIG_NET_BUFSIZE=650 - Per RFC2131 (p. 9), the DHCP client must be
(or larger) prepared to receive DHCP messages of up to
576 bytes (excluding Ethernet, IP, or UDP
headers and FCS).
Other configuration items apply also to the selected webserver net utility.
Additional relevant settings for the uIP webserver net utility are:
CONFIG_NETUTILS_HTTPDSTACKSIZE
CONFIG_NETUTILS_HTTPDFILESTATS
CONFIG_NETUTILS_HTTPDNETSTATS
Applications using this example will need to provide an appconfig
file in the configuration driver with instruction to build applications
like:
CONFIGURED_APPS += uiplib
CONFIGURED_APPS += dhcpc
CONFIGURED_APPS += resolv
CONFIGURED_APPS += webserver
examples/usbserial
^^^^^^^^^^^^^^^^^^
TARGET CONFIGURATION:
This is another implementation of "Hello, World" but this one uses
a USB serial driver. Configuration options can be used to simply
the test. These options include:
CONFIG_EXAMPLES_USBSERIAL_INONLY
Only verify IN (device-to-host) data transfers. Default: both
CONFIG_EXAMPLES_USBSERIAL_OUTONLY
Only verify OUT (host-to-device) data transfers. Default: both
CONFIG_EXAMPLES_USBSERIAL_ONLYSMALL
Send only small, single packet messages. Default: Send large and small.
CONFIG_EXAMPLES_USBSERIAL_ONLYBIG
Send only large, multi-packet messages. Default: Send large and small.
If CONFIG_USBDEV_TRACE is enabled (or CONFIG_DEBUG and CONFIG_DEBUG_USB), then
the example code will also manage the USB trace output. The amount of trace output
can be controlled using:
CONFIG_EXAMPLES_USBSERIAL_TRACEINIT
Show initialization events
CONFIG_EXAMPLES_USBSERIAL_TRACECLASS
Show class driver events
CONFIG_EXAMPLES_USBSERIAL_TRACETRANSFERS
Show data transfer events
CONFIG_EXAMPLES_USBSERIAL_TRACECONTROLLER
Show controller events
CONFIG_EXAMPLES_USBSERIAL_TRACEINTERRUPTS
Show interrupt-related events.
Error results are always shown in the trace output
HOST-SIDE TEST PROGRAM
In additional to the target device-side example, there is also a
host-side application in this directory. This host side application
must be executed on a Linux host in order to perform the USBSERIAL
test. The host application can be compiled under Linux (or Cygwin?)
as follows:
cd examples/usbserial
make -f Makefile.host TOPDIR=<nuttx-directory>
RUNNING THE TEST
This will generate a small program called 'host'. Usage:
1. Build the examples/usbserial target program and start the target.
2. Wait a bit, then do enter:
dmesg
At the end of the dmesg output, you should see the serial
device was successfully idenfied and assigned to a tty device,
probably /dev/ttyUSB0 or /dev/ttyACM0 (depending on the configured
USB serial driver).
3. Then start the host application:
./host [<tty-dev>]
Where:
<tty-dev> is the USB TTY device to use. The default is
"/dev/ttyUSB0" (for the PL2303 emulation) or "/dev/ttyACM0" (for
the CDC/ACM serial device).
The host and target will exchange are variety of very small and very large
serial messages.
examples/usbstorage
^^^^^^^^^^^^^^^^^^^
This example registers a block device driver, then exports the block
the device using the USB storage class driver. In order to use this
example, your board-specific logic must provide the function:
void usbmsc_archinitialize(void);
This function will be called by the example/usbstorage in order to
do the actual registration of the block device drivers. For examples
of the implementation of usbmsc_archinitialize() see
configs/mcu123-lpc124x/src/up_usbmsc.c or
configs/stm3210e-eval/src/usbmsc.c
Configuration options:
CONFIG_EXAMPLES_USBMSC_BUILTIN
This example can be built as two NSH "built-in" commands if this option
is selected: 'msconn' will connect the USB mass storage device; 'msdis'
will disconnect the USB storage device.
CONFIG_EXAMPLES_USBMSC_NLUNS
Defines the number of logical units (LUNs) exported by the USB storage
driver. Each LUN corresponds to one exported block driver (or partition
of a block driver). May be 1, 2, or 3. Default is 1.
CONFIG_EXAMPLES_USBMSC_DEVMINOR1
The minor device number of the block driver for the first LUN. For
example, N in /dev/mmcsdN. Used for registering the block driver. Default
is zero.
CONFIG_EXAMPLES_USBMSC_DEVPATH1
The full path to the registered block driver. Default is "/dev/mmcsd0"
CONFIG_EXAMPLES_USBMSC_DEVMINOR2 and CONFIG_EXAMPLES_USBMSC_DEVPATH2
Similar parameters that would have to be provided if CONFIG_EXAMPLES_USBMSC_NLUNS
is 2 or 3. No defaults.
CONFIG_EXAMPLES_USBMSC_DEVMINOR3 and CONFIG_EXAMPLES_USBMSC_DEVPATH3
Similar parameters that would have to be provided if CONFIG_EXAMPLES_USBMSC_NLUNS
is 3. No defaults.
CONFIG_EXAMPLES_USBMSC_DEBUGMM
Enables some debug tests to check for memory usage and memory leaks.
If CONFIG_USBDEV_TRACE is enabled (or CONFIG_DEBUG and CONFIG_DEBUG_USB), then
the example code will also manage the USB trace output. The amount of trace output
can be controlled using:
CONFIG_EXAMPLES_USBMSC_TRACEINIT
Show initialization events
CONFIG_EXAMPLES_USBMSC_TRACECLASS
Show class driver events
CONFIG_EXAMPLES_USBMSC_TRACETRANSFERS
Show data transfer events
CONFIG_EXAMPLES_USBMSC_TRACECONTROLLER
Show controller events
CONFIG_EXAMPLES_USBMSC_TRACEINTERRUPTS
Show interrupt-related events.
Error results are always shown in the trace output
NOTE 1: When built as an NSH add-on command (CONFIG_EXAMPLES_USBMSC_BUILTIN=y),
Caution should be used to assure that the SD drive (or other storage device) is
not in use when the USB storage device is configured. Specifically, the SD
driver should be unmounted like:
nsh> mount -t vfat /dev/mmcsd0 /mnt/sdcard # Card is mounted in NSH
...
nsh> umount /mnd/sdcard # Unmount before connecting USB!!!
nsh> msconn # Connect the USB storage device
...
nsh> msdis # Disconnect USB storate device
nsh> mount -t vfat /dev/mmcsd0 /mnt/sdcard # Restore the mount
Failure to do this could result in corruption of the SD card format.
NOTE 2: This test exercises internal USB device driver interfaces. As such,
it relies on internal OS interfaces that are not normally available to a
user-space program. As a result, this example cannot be used if a
NuttX is built as a protected, supervisor kernel (CONFIG_NUTTX_KERNEL).
examples/usbterm
^^^^^^^^^^^^^^^^
This example implements a little USB terminal.. more of a USB "chat"
edited lines are received from the remote host connected via USB
serial and echoed out the target serial console. Edited lines from
the local target serial console are received and forwarded to the
remote host via USB serial.
Usage:
- Build the example and load into the target FLASH
- Connect on terminal to the target RS-232 connect and configure
for 115200 8N1. For example, suppose this Tera Term on a Windows
box.
- Power up the target board
- Connect the USB to a Linux box. Use the Linux dmesg command to
assure that the connect was successful. The USB CDC ACM device
should appear as /dev/ttyACM0
- On the Linux box, open minicom with tty=/dev/ttyACM0.
Configure minicom so that (1) local characters are echoed and (2)
so that no CR is required.
- Now what you type on the target Tera Term window should echo on
the Linux minicom window and, conversely, what you type on the
minicom winow should be echo in the target Tera Term window.
Configuration options:
CONFIG_EXAMPLES_USBTERM_BUILTIN - Build the usbterm example as an NSH
built-in command. NOTE: This is not fully functional as of this
writing.. It should work, but there is no mechanism in place yet
to exit the USB terminal program and return to NSH.
CONFIG_EXAMPLES_USBTERM_DEVINIT - If defined, then the example will
call a user provided function as part of its initialization:
int usbterm_devinit(void);
And another user provided function at termination:
void usbterm_devuninit(void);
CONFIG_EXAMPLES_USBTERM_BUFLEN - The size of the input and output
buffers used for receiving data. Default 256 bytes.
If CONFIG_USBDEV_TRACE is enabled (or CONFIG_DEBUG and CONFIG_DEBUG_USB, or
CONFIG_USBDEV_TRACE), then the example code will also manage the USB trace
output. The amount of trace output can be controlled using:
CONFIG_EXAMPLES_USBTERM_TRACEINIT
Show initialization events
CONFIG_EXAMPLES_USBTERM_TRACECLASS
Show class driver events
CONFIG_EXAMPLES_USBTERM_TRACETRANSFERS
Show data transfer events
CONFIG_EXAMPLES_USBTERM_TRACECONTROLLER
Show controller events
CONFIG_EXAMPLES_USBTERM_TRACEINTERRUPTS
Show interrupt-related events.
NOTE: By default, USBterm uses readline to get data from stdin. So your
appconfig file must have the following build path:
CONFIGURED_APPS += system/readline
NOTE: If you use the USBterm task over a telnet NSH connection, then you
should set the following configuration item:
CONFIG_EXAMPLES_USBTERM_FGETS=y
By default, the USBterm client will use readline() to get characters from
the console. Readline includes and command-line editor and echos
characters received in stdin back through stdout. Neither of these
behaviors are desire-able if Telnet is used.
Error results are always shown in the trace output
Other relevant configuration options: CONFIG_CDCACM selected by the
Prolifics emulation (not defined) and the CDC serial implementation
(when defined). CONFIG_USBDEV_TRACE_INITIALIDSET.
examples/watchdog
^^^^^^^^^^^^^^^^^
A simple test of a watchdog timer driver. Initializes starts the watchdog
timer. It pings the watchdog timer for a period of time then lets the
watchdog timer expire... resetting the CPU is successful. This
example can ONLY be built as an NSH built-in function.
This test depends on these specific Watchdog/NSH configurations settings (your
specific watchdog hardware settings might require additional settings).
CONFIG_WATCHDOG- Enables watchdog timer support support.
CONFIG_NSH_BUILTIN_APPS - Build the watchdog time test as an NSH
built-in function. Default: Not built! The example can only be used
as an NSH built-in application
Specific configuration options for this example include:
CONFIG_EXAMPLES_WATCHDOG_DEVPATH - The path to the Watchdog device.
Default: /dev/watchdog0
CONFIG_EXAMPLES_WATCHDOG_PINGTIME - Time in milliseconds that the example
will ping the watchdog before letting the watchdog expire. Default: 5000
milliseconds
CONFIG_EXAMPLES_WATCHDOG_PINGDELAY - Time delay between pings in
milliseconds. Default: 500 milliseconds.
CONFIG_EXAMPLES_WATCHDOG_TIMEOUT - The watchdog timeout value in
milliseconds before the watchdog timer expires. Default: 2000
milliseconds.
examples/wget
^^^^^^^^^^^^^
A simple web client example. It will obtain a file from a server using the HTTP
protocol. Settings unique to this example include:
CONFIG_EXAMPLE_WGET_URL - The URL of the file to get
CONFIG_EXAMPLE_WGET_NOMAC - (May be defined to use software assigned MAC)
CONFIG_EXAMPLE_WGET_IPADDR - Target IP address
CONFIG_EXAMPLE_WGET_DRIPADDR - Default router IP addess
CONFIG_EXAMPLE_WGET_NETMASK - Network mask
This example uses netutils/webclient. Additional configuration settings apply
to that code as follows (but built-in defaults are probably OK):
CONFIG_WEBCLIENT_GETMIMETYPE, CONFIG_WEBCLIENT_MAXHTTPLINE,
CONFIG_WEBCLIENT_MAXMIMESIZE, CONFIG_WEBCLIENT_MAXHOSTNAME,
CONFIG_WEBCLIENT_MAXFILENAME
Of course, the example also requires other settings including CONFIG_NET and
CONFIG_NET_TCP. The example also uses the uIP resolver which requires CONFIG_UDP.
WARNNG: As of this writing, wget is untested on the target platform. At present
it has been tested only in the host-based configuration described in the following
note. The primary difference is that the target version will rely on the also
untested uIP name resolver.
NOTE: For test purposes, this example can be built as a host-based wget function.
This can be built as follows:
cd examples/wget
make -f Makefile.host
Applications using this example will need to provide an appconfig
file in the configuration driver with instruction to build applications
like:
CONFIGURED_APPS += uiplib
CONFIGURED_APPS += resolv
CONFIGURED_APPS += webclient
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