spell checked
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@1846 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo
parent
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@ -383,7 +383,7 @@
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<h3><a name="supportedarchitectures">2.2.3 Supported Architectures</a></h3>
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<p>
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<b>Archictecture- and Chip-Specific Directories</b>.
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<b>Architecture- and Chip-Specific Directories</b>.
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All processor architecture-specific directories are maintained in sub-directories of
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the <code>arch/</code> directory.
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Different chips or SoC's may implement the same processor core.
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@ -394,7 +394,7 @@
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<ul>
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<li><code>arch/sim</code>:
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A user-mode port of NuttX to the x86 Linux platform is available.
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The purpose of this port is primarily to support OS feature developement.
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The purpose of this port is primarily to support OS feature development.
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This port does not support interrupts or a real timer (and hence no
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round robin scheduler) Otherwise, it is complete.
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</li>
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@ -565,7 +565,7 @@
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<h4><a name="boardconfigsubdirs">2.3.2.2 Board Specific Configuration Sub-Directories</a></h4>
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<p>
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The <code>configs/</code><i><board-name></i><code>/</code> sub-directory holds all of the
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files that are necessary to configure Nuttx for the particular board.
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files that are necessary to configure NuttX for the particular board.
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A board may have various different configurations using the common source files.
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Each board configuration is described by three files: <code>Make.defs</code>, <code>defconfig</code>, and <code>setenv.sh</code>.
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Typically, each set of configuration files is retained in a separate configuration sub-directory
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@ -610,7 +610,7 @@
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</li>
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<li>
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<code>setenv.sh</code>: This is a script that you can include that will be installed at
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the toplevel of the directory structure and can be sourced to set any
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the top level of the directory structure and can be sourced to set any
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necessary environment variables.
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</li>
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</ul>
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@ -651,7 +651,7 @@
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<li><code>configs/ntosd-dm320</code>:
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This port uses the Neuros OSD with a GNU arm-elf toolchain* under Linux or Cygwin.
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See <a href="http://wiki.neurostechnology.com/index.php/Developer_Welcome">Neuros Wiki</a>
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for futher information.
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for further information.
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NuttX operates on the ARM9EJS of this dual core processor.
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STATUS: This port is code complete, verified, and included in the
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NuttX 0.2.1 release.
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@ -660,7 +660,7 @@
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<li><code>configs/olimex-strp711</code>:
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This port uses the Olimex STR-P711 board arm-elf toolchain* under Linux or Cygwin.
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See the <a href="http://www.olimex.com/dev/str-p711.html">Olimex</a> web site
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for futher information.
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for further information.
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STATUS: Coding for the basic port -- serial console and system timer -- is complete
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but untested to problems I am having using OpenOCD with a wiggler clone JTAG.
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</li>
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@ -673,7 +673,7 @@
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<li><code>configs/sim</code>:
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A user-mode port of NuttX to the x86 Linux platform is available.
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The purpose of this port is primarily to support OS feature developement.
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The purpose of this port is primarily to support OS feature development.
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This port does not support interrupts or a real timer (and hence no
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round robin scheduler) Otherwise, it is complete.
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</li>
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@ -686,7 +686,7 @@
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<li><code>configs/xtrs</code>:
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TRS80 Model 3. This port uses a vintage computer based on the Z80.
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An emulator for this computer is available to run TRS80 programs on a
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linux platform (http://www.tim-mann.org/xtrs.html).
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Linux platform (http://www.tim-mann.org/xtrs.html).
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</li>
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<li><code>configs/z16f2800100zcog</code>
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@ -701,7 +701,7 @@
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That simulator can be found in the NuttX CVS
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<a href="http://nuttx.cvs.sourceforge.net/nuttx/misc/sims/z80sim/">here</a>.
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This port also the <a href="http://sdcc.sourceforge.net/">SDCC</a> toolchain
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under Linux or Cygwin(verfied with version 2.6.0).
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under Linux or Cygwin(verified with version 2.6.0).
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</li>
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<li><code>configs/z8encore000zco</code>
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@ -782,7 +782,7 @@ graphics/
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| `-- <i>(NuttX graphics library source files)</i>
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|-- nx/
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| |-- Make.defs
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| `-- <i>(Nuttx X-server source files)</i>
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| `-- <i>(NuttX X-server source files)</i>
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`-- <i>(common file system source files)</i>
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</pre></ul>
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@ -818,7 +818,7 @@ include/
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<h2>2.9 <a name="DirStructLib">lib</a></h2>
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<p>
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This directory holds a collection of standard libc-like functions with custom
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interfaces into Nuttx.
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interfaces into NuttX.
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</p>
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<h2>2.10 <a name="DirStructMm">mm</a></h2>
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@ -829,7 +829,7 @@ include/
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<h2>2.11 <a name="DirStructNet">net</a></h2>
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<p>
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This directory contains the implementation of the socket APIs.
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The subdirectory, <code>uip</code> contians the uIP port.
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The subdirectory, <code>uip</code> contains the uIP port.
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</P>
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<h2>2.12 <a name="DirStructNetUtils">netutils</a></h2>
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@ -968,7 +968,7 @@ make
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</p>
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<ul>
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<li>The makefile fragment <a href="#boardconfigsubdirs"><code>.config</code></a> that describes the current configuration.</li>
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<li>The makefile fragment <a href="#boardconfigsubdirs"><code>Make.defs</code></a> that provides customized build targers, and</li>
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<li>The makefile fragment <a href="#boardconfigsubdirs"><code>Make.defs</code></a> that provides customized build targets, and</li>
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<li>The shell script <a href="#boardconfigsubdirs"><code>setenv.sh</code></a> that sets up the configuration environment for the build.</li>
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</ul>
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<p>
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@ -1051,7 +1051,7 @@ The system can be re-made subsequently by just typing <code>make</code>.
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the processor specific portions of the new TCB.
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</p>
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<p>
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This function must setup the intial architecture registers
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This function must setup the initial architecture registers
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and/or stack so that execution will begin at tcb->start
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on the next context switch.
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</p>
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@ -1156,7 +1156,7 @@ The system can be re-made subsequently by just typing <code>make</code>.
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<li><code>tcb</code>: Refers to the tcb to be unblocked. This tcb is
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in one of the waiting tasks lists. It must be moved to
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the ready-to-run list and, if it is the highest priority
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ready to run taks, executed.
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ready to run tasks, executed.
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</li>
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</ul>
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@ -1248,7 +1248,7 @@ The system can be re-made subsequently by just typing <code>make</code>.
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<p>
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Unlike other UP APIs, this function may be called
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directly from user programs in various states. The
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implementation of this function should diable interrupts
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implementation of this function should disable interrupts
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before performing scheduling operations.
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</p>
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@ -1272,7 +1272,7 @@ The system can be re-made subsequently by just typing <code>make</code>.
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This function is called by the OS when one or more
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signal handling actions have been queued for execution.
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The architecture specific code must configure things so
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that the 'igdeliver' callback is executed on the thread
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that the 'sigdeliver' callback is executed on the thread
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specified by 'tcb' as soon as possible.
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</p>
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<p>
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@ -1337,7 +1337,7 @@ The system can be re-made subsequently by just typing <code>make</code>.
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<ul><pre>
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#ifndef CONFIG_ARCH_NOINTC
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void up_disable_irq(int irq);
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#endf
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#endif
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</pre></ul>
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<p><b>Description</b>.
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@ -1364,7 +1364,7 @@ The system can be re-made subsequently by just typing <code>make</code>.
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<ul><pre>
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#ifndef CONFIG_ARCH_NOINTC
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void up_enable_irq(int irq);
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#endf
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#endif
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</pre></ul>
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<p><b>Description</b>.
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@ -1385,7 +1385,7 @@ The system can be re-made subsequently by just typing <code>make</code>.
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<ul><pre>
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#ifdef CONFIG_ARCH_IRQPRIO
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void up_enable_irq(int irq);
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#endf
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#endif
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</pre></ul>
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<p><b>Description</b>.
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Set the priority of an IRQ.
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@ -1436,8 +1436,8 @@ The system can be re-made subsequently by just typing <code>make</code>.
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<p><b>Prototype</b>: <code>void irq_dispatch(int irq, FAR void *context);</code></p>
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<p><b>Description</b>.
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This function must be called from the achitecture-
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specific logic in order to dispaly an interrupt to
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This function must be called from the architecture-
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specific logic in order to display an interrupt to
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the appropriate, registered handling logic.
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</p>
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@ -1481,7 +1481,7 @@ The system can be re-made subsequently by just typing <code>make</code>.
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The implementation of LED support is very specific to a board architecture.
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Some boards have several LEDS, others have only one or two.
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Some have none.
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Others LED matrices and show alphnumeric data, etc.
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Others LED matrices and show alphanumeric data, etc.
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The NuttX logic does not refer to specific LEDS, rather, it refers to an event to be shown on the LEDS
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in whatever manner is appropriate for the board;
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the way that this event is presented depends upon the hardware available on the board.
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@ -1587,27 +1587,27 @@ extern void up_ledoff(int led);
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<p><b>Overview</b>.
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NuttX includes an optional, scalable file system.
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This file-system may be omitted altogther; NuttX does not depend on the presence
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This file-system may be omitted altogether; NuttX does not depend on the presence
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of any file system.
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</p>
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<p><b>Pseudo Root File System</b>.
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Or, a simple <i>in-memory</i>, <i>psuedo</i> file system can be enabled.
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Or, a simple <i>in-memory</i>, <i>pseudo</i> file system can be enabled.
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This simple file system can be enabled setting the CONFIG_NFILE_DESCRIPTORS
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option to a non-zero value (see <a href="#apndxconfigs">Appendix A</a>).
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This is an <i>in-memory</i> file system because it does not require any
|
||||
storage medium or block driver support.
|
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Rather, file system contents are generated on-the-fly as referenced via
|
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standard file system operations (open, close, read, write, etc.).
|
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In this sense, the file system is <i>psuedo</i> file system (in the
|
||||
In this sense, the file system is <i>pseudo</i> file system (in the
|
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same sense that the Linux <code>/proc</code> file system is also
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referred to as a psuedo file system).
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referred to as a pseudo file system).
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</p>
|
||||
|
||||
<p>
|
||||
Any user supplied data or logic can be accessed via the psuedo-file system.
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Any user supplied data or logic can be accessed via the pseudo-file system.
|
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Built in support is provided for character and block <a href="#DeviceDrivers">drivers</a> in the
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<code>/dev</code> psuedo file system directory.
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<code>/dev</code> pseudo file system directory.
|
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</p>
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<p><b>Mounted File Systems</b>
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@ -1615,7 +1615,7 @@ extern void up_ledoff(int led);
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devices that provide access to true file systems backed up via some
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mass storage device.
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NuttX supports the standard <code>mount()</code> command that allows
|
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a block driver to be bound to a mountpoint within the psuedo file system
|
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a block driver to be bound to a mountpoint within the pseudo file system
|
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and to a file system.
|
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At present, NuttX supports only the VFAT file system.
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</p>
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|
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@ -1624,10 +1624,10 @@ extern void up_ledoff(int led);
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From a programming perspective, the NuttX file system appears very similar
|
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to a Linux file system.
|
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However, there is a fundamental difference:
|
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The NuttX root file system is a psuedo file system and true file systems may be
|
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mounted in the psuedo file system.
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The NuttX root file system is a pseudo file system and true file systems may be
|
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mounted in the pseudo file system.
|
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In the typical Linux installation by comparison, the Linux root file system
|
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is a true file system and psuedo file systems may be mounted in the true,
|
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is a true file system and pseudo file systems may be mounted in the true,
|
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root file system.
|
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The approach selected by NuttX is intended to support greater scalability
|
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from the very tiny platform to the moderate platform.
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|
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@ -1649,7 +1649,7 @@ extern void up_ledoff(int led);
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<li>Other <i>Specialized</i> Drivers.</li>
|
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</ul>
|
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These different device driver types are discussed in the following paragraphs.
|
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Note: device driver support requires that the <i>in-memory</i>, <i>psuedo</i> file system
|
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Note: device driver support requires that the <i>in-memory</i>, <i>pseudo</i> file system
|
||||
is enabled by setting the CONFIG_NFILE_DESCRIPTORS in the NuttX configuration file to a
|
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non-zero value.
|
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</p>
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|
|
@ -1745,7 +1745,7 @@ extern void up_ledoff(int led);
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</li>
|
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<li>
|
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<b>Examples</b>.
|
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<code>drivers/loop.c</code>, <code>drivers/mmcds/mmcsd_spi.c</code>, <code>drivers/ramdisk.c</code>, etc.
|
||||
<code>drivers/loop.c</code>, <code>drivers/mmcsd/mmcsd_spi.c</code>, <code>drivers/ramdisk.c</code>, etc.
|
||||
</li>
|
||||
</ul>
|
||||
|
||||
|
|
@ -1762,7 +1762,7 @@ extern void up_ledoff(int led);
|
|||
</li>
|
||||
<li>
|
||||
<b><code>int netdev_register(FAR struct uip_driver_s *dev);</code></b>.
|
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Each Eterhenet driver registers itself by calling <code>netdev_register()</code>.
|
||||
Each Ethernet driver registers itself by calling <code>netdev_register()</code>.
|
||||
</li>
|
||||
<li>
|
||||
<b>Examples</b>:
|
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|
|
@ -1789,17 +1789,22 @@ extern void up_ledoff(int led);
|
|||
<code>ubyte status(FAR struct spi_dev_s *dev, enum spi_dev_e devid);</code><br>
|
||||
<code>uint16 send(FAR struct spi_dev_s *dev, uint16 wd);</code><br>
|
||||
<code>void exchange(FAR struct spi_dev_s *dev, FAR const void *txbuffer, FAR void *rxbuffer, size_t nwords);</code><br>
|
||||
<p><codei>nt registercallback(FAR struct spi_dev_s *dev, mediachange_t callback, void *arg);</code></p>
|
||||
<p><code>int registercallback(FAR struct spi_dev_s *dev, mediachange_t callback, void *arg);</code></p>
|
||||
</ul>
|
||||
<li>
|
||||
<b>Binding SPI Drivers</b>.
|
||||
SPI drivers are not normally directly accessed by user code, but are usually bound to another,
|
||||
higher level device driver.
|
||||
See for example, <code>int mmcsd_spislotinitialize(int minor, int slotno, FAR struct spi_dev_s *spi)</code> in <code>drivers/mmcsd/mmcsd_spi.c</code>.
|
||||
In general, the binding sequence is:
|
||||
<ul>
|
||||
<li>Get an instance of <code>struct spi_dev_s</code> from the hardware-specific SPI device driver, and </li>
|
||||
<li>Provide that instance to the initialization method of the higher level device driver.</li>
|
||||
</ul>
|
||||
</li>
|
||||
<li>
|
||||
<b>Examples</b>:
|
||||
<code>drivers/loop.c</code>, <code>drivers/mmcds/mmcsd_spi.c</code>, <code>drivers/ramdisk.c</code>, etc.
|
||||
<code>drivers/loop.c</code>, <code>drivers/mmcsd/mmcsd_spi.c</code>, <code>drivers/ramdisk.c</code>, etc.
|
||||
</li>
|
||||
</ul>
|
||||
|
||||
|
|
@ -1822,8 +1827,13 @@ extern void up_ledoff(int led);
|
|||
</ul>
|
||||
<li>
|
||||
<b>Binding I2C Drivers</b>.
|
||||
SPI drivers are not normally directly accessed by user code, but are usually bound to another,
|
||||
I2C drivers are not normally directly accessed by user code, but are usually bound to another,
|
||||
higher level device driver.
|
||||
In general, the binding sequence is:
|
||||
<ul>
|
||||
<li>Get an instance of <code>struct i2c_dev_s</code> from the hardware-specific I2C device driver, and </li>
|
||||
<li>Provide that instance to the initialization method of the higher level device driver.</li>
|
||||
</ul>
|
||||
</li>
|
||||
<li>
|
||||
<b>Examples</b>:
|
||||
|
|
@ -1862,7 +1872,7 @@ extern void up_ledoff(int led);
|
|||
A serial driver may register itself by calling <code>uart_register()</code>, passing it the
|
||||
<code>path</code> where it will appear in the <a href="#NxFileSystem">pseudo-file-system</a> and it's
|
||||
initialized instance of <code>struct uart_ops_s</code>.
|
||||
By convention, serial device drivers are registered at pathes like <code>/dev/ttyS0</code>, <code>/dev/ttyS1</code>, etc.
|
||||
By convention, serial device drivers are registered at paths like <code>/dev/ttyS0</code>, <code>/dev/ttyS1</code>, etc.
|
||||
See the <code>uart_register()</code> implementation in <code>drivers/serial.c</code>.
|
||||
</li>
|
||||
<li>
|
||||
|
|
@ -1890,7 +1900,7 @@ extern void up_ledoff(int led);
|
|||
|
||||
<h2>Architecture selection</h2>
|
||||
<p>
|
||||
The following configuration itemes select the architecture, chip, and
|
||||
The following configuration items select the architecture, chip, and
|
||||
board configuration for the build.
|
||||
</p>
|
||||
<ul>
|
||||
|
|
@ -1913,7 +1923,7 @@ extern void up_ledoff(int led);
|
|||
Define if the architecture does not support an interrupt controller
|
||||
or otherwise cannot support APIs like up_enable_irq() and up_disable_irq().</li>
|
||||
<li><code>CONFIG_ARCH_IRQPRIO</code>:
|
||||
Define if the architecture suports prioritizaton of interrupts and the
|
||||
Define if the architecture supports prioritization of interrupts and the
|
||||
up_prioritize_irq() API.</li>
|
||||
</ul>
|
||||
|
||||
|
|
@ -1939,14 +1949,14 @@ extern void up_ledoff(int led);
|
|||
</li>
|
||||
<li><code>CONFIG_INTELHEX_BINARY</code>:
|
||||
Make the Intel HEX binary format used with many different loaders using the GNU objcopy program
|
||||
This option hould not be selected if you are not using the GNU toolchain.
|
||||
This option should not be selected if you are not using the GNU toolchain.
|
||||
</li>
|
||||
<li><code>CONFIG_MOTOROLA_SREC</code>:
|
||||
Make the Motorola S-Record binary format used with many different loaders using the GNU objcopy program
|
||||
Should not be selected if you are not using the GNU toolchain.
|
||||
</li>
|
||||
<li><code>CONFIG_RAW_BINARY</code>:
|
||||
mmke a raw binary format file used with many different loaders using the GNU objcopy program.
|
||||
Make a raw binary format file used with many different loaders using the GNU objcopy program.
|
||||
This option should not be selected if you are not using the GNU toolchain.
|
||||
</li>
|
||||
<li><code>CONFIG_HAVE_LIBM</code>:
|
||||
|
|
@ -1954,7 +1964,7 @@ extern void up_ledoff(int led);
|
|||
</li>
|
||||
<li><code>CONFIG_HAVE_CXX</code>:
|
||||
Toolchain supports C++ and <code>CXX</code>, <code>CXXFLAGS</code>, and <code>COMPILEXX</code>
|
||||
have been defined in the configuratins <code>Make.defs</code> file.
|
||||
have been defined in the configurations <code>Make.defs</code> file.
|
||||
</li>
|
||||
</ul>
|
||||
|
||||
|
|
@ -1975,7 +1985,7 @@ extern void up_ledoff(int led);
|
|||
<code>CONFIG_DEBUG_SCHED</code>: enable OS debug output (disabled by default)
|
||||
</li>
|
||||
<li>
|
||||
<code>CONFIG_DEBUG_MM</code>: enable memory management debug output (disabld by default)
|
||||
<code>CONFIG_DEBUG_MM</code>: enable memory management debug output (disabled by default)
|
||||
</li>
|
||||
<li>
|
||||
<code>CONFIG_DEBUG_NET</code>: enable network debug output (disabled by default)
|
||||
|
|
@ -2003,7 +2013,7 @@ extern void up_ledoff(int led);
|
|||
interval other than 10 msec.
|
||||
</li>
|
||||
<li>
|
||||
<code>CONFIG_RR_INTERVAL</code>: The round robin timeslice will be set
|
||||
<code>CONFIG_RR_INTERVAL</code>: The round robin time slice will be set
|
||||
this number of milliseconds; Round robin scheduling can
|
||||
be disabled by setting this value to zero.
|
||||
</li>
|
||||
|
|
@ -2012,7 +2022,7 @@ extern void up_ledoff(int led);
|
|||
scheduler to monitor system performance
|
||||
</li>
|
||||
<li>
|
||||
<code>CONFIG_TASK_NAME_SIZE</code>: Spcifies that maximum size of a
|
||||
<code>CONFIG_TASK_NAME_SIZE</code>: Specifies that maximum size of a
|
||||
task name to save in the TCB. Useful if scheduler
|
||||
instrumentation is selected. Set to zero to disable.
|
||||
</li>
|
||||
|
|
@ -2034,7 +2044,7 @@ extern void up_ledoff(int led);
|
|||
<li>
|
||||
<code>CONFIG_PRIORITY_INHERITANCE</code>: Set to enable support for
|
||||
priority inheritance on mutexes and semaphores.
|
||||
Priority inheritance is a strategy of addessing
|
||||
Priority inheritance is a strategy of addressing
|
||||
<a href="NuttxUserGuide.html#priorityinversion"><i>priority inversion</i></a>.
|
||||
Details of the NuttX implementation of priority inheritance is
|
||||
discussed <a href="NuttxUserGuide.html#priorityinheritance">elsewhere</a>.
|
||||
|
|
@ -2096,7 +2106,7 @@ extern void up_ledoff(int led);
|
|||
|
||||
<p>
|
||||
The architecture can provide optimized versions of the
|
||||
following to improve sysem performance.
|
||||
following to improve system performance.
|
||||
</p>
|
||||
|
||||
<ul>
|
||||
|
|
@ -2145,7 +2155,7 @@ extern void up_ledoff(int led);
|
|||
</li>
|
||||
<li>
|
||||
<code>CONFIG_MQ_MAXMSGSIZE</code>: Message structures are allocated with
|
||||
a fixed payload size given by this settin (does not include
|
||||
a fixed payload size given by this setting (does not include
|
||||
other message structure overhead.
|
||||
</li>
|
||||
<li>
|
||||
|
|
@ -2481,7 +2491,7 @@ extern void up_ledoff(int led);
|
|||
</li>
|
||||
<li>
|
||||
<code>CONFIG_IDLETHREAD_STACKSIZE</code>: The size of the initial stack.
|
||||
This is the thread that (1) performs the inital boot of the system up
|
||||
This is the thread that (1) performs the initial boot of the system up
|
||||
to the point where user_start() is spawned, and (2) there after is the
|
||||
IDLE thread that executes only when there is no other thread ready to
|
||||
run.
|
||||
|
|
@ -2517,7 +2527,7 @@ extern void up_ledoff(int led);
|
|||
<li>Linux is a registered trademark of Linus Torvalds.</li>
|
||||
<li>Eagle-100 is a trademark of <a href=" http://www.micromint.com/">Micromint USA, LLC</a>.
|
||||
<li>LPC2148 is a trademark of NXP Semiconductors.</li>
|
||||
<li>TI is a tradename of Texas Instruments Incorporated.</li>
|
||||
<li>TI is a trade name of Texas Instruments Incorporated.</li>
|
||||
<li>UNIX is a registered trademark of The Open Group.</li>
|
||||
<li>VxWorks is a registered trademark of Wind River Systems, Incorporated.</li>
|
||||
<li>ZDS, ZNEO, Z16F, Z80, and Zilog are a registered trademark of Zilog, Inc.</li>
|
||||
|
|
|
|||
Loading…
Reference in New Issue