diff options
| author | Yuval Adam <yuv.adm@gmail.com> | 2014-06-29 12:34:32 +0300 |
|---|---|---|
| committer | Yuval Adam <yuv.adm@gmail.com> | 2014-06-29 12:34:32 +0300 |
| commit | c3e4c9a25c2910d2d66d52215b3406b13d5b23d5 (patch) | |
| tree | added370d1e356901f8579f076e3263fb0464db7 /boards/dk-tm4c129x/enet_io/readme.txt | |
| parent | 990090a4cc9070837d31e66b58d40f0c3d038741 (diff) | |
Add more board models
Diffstat (limited to 'boards/dk-tm4c129x/enet_io/readme.txt')
| -rw-r--r-- | boards/dk-tm4c129x/enet_io/readme.txt | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/boards/dk-tm4c129x/enet_io/readme.txt b/boards/dk-tm4c129x/enet_io/readme.txt new file mode 100644 index 0000000..900af8e --- /dev/null +++ b/boards/dk-tm4c129x/enet_io/readme.txt @@ -0,0 +1,78 @@ +Ethernet-based I/O Control
+
+This example application demonstrates web-based I/O control using the
+Tiva Ethernet controller and the lwIP TCP/IP Stack. DHCP is used to
+obtain an Ethernet address. If DHCP times out without obtaining an
+address, a static IP address will be chosen using AutoIP. The address that
+is selected will be shown on the QVGA display allowing you to access the
+internal web pages served by the application via your normal web browser.
+
+Two different methods of controlling board peripherals via web pages are
+illustrated via pages labeled ``IO Control Demo 1'' and ``IO Control
+Demo 2'' in the navigation menu on the left of the application's home page.
+In both cases, the example allows you to toggle the state of the user LED
+on the board and set the speed of a graphical animation on the display.
+
+``IO Control Demo 1'' uses JavaScript running in the web browser to send
+HTTP requests for particular special URLs. These special URLs are
+intercepted in the file system support layer (io_fs.c) and used to
+control the LED and animation. Responses generated by the board are
+returned to the browser and inserted into the page HTML dynamically by
+more JavaScript code.
+
+``IO Control Demo 2'' uses standard HTML forms to pass parameters to CGI
+(Common Gateway Interface) handlers running on the board. These handlers
+process the form data and control the animation and LED as requested before
+sending a response page (in this case, the original form) back to the
+browser. The application registers the names and handlers for each of its
+CGIs with the HTTPD server during initialization and the server calls
+these handlers after parsing URL parameters each time one of the CGI URLs
+is requested.
+
+Information on the state of the various controls in the second demo is
+inserted into the served HTML using SSI (Server Side Include) tags which
+are parsed by the HTTPD server in the application. As with the CGI
+handlers, the application registers its list of SSI tags and a handler
+function with the web server during initialization and this handler is
+called whenever any registered tag is found in a .shtml, .ssi, .shtm or
+.xml file being served to the browser.
+
+In addition to LED and animation speed control, the second example also
+allows a line of text to be sent to the board for display on the LCD
+panel. This is included to illustrate the decoding of HTTP text strings.
+
+Note that the web server used by this example has been modified from the
+example shipped with the basic lwIP package. Additions include SSI and
+CGI support along with the ability to have the server automatically insert
+the HTTP headers rather than having these built in to the files in the
+file system image.
+
+Source files for the internal file system image can be found in the ``fs''
+directory. If any of these files are changed, the file system image
+(io_fsdata.h) should be rebuilt by running the following command from the
+enet_io directory:
+
+../../../../tools/bin/makefsfile -i fs -o io_fsdata.h -r -h -q
+
+For additional details on lwIP, refer to the lwIP web page at:
+http://savannah.nongnu.org/projects/lwip/
+
+-------------------------------------------------------------------------------
+
+Copyright (c) 2007-2014 Texas Instruments Incorporated. All rights reserved.
+Software License Agreement
+
+Texas Instruments (TI) is supplying this software for use solely and
+exclusively on TI's microcontroller products. The software is owned by
+TI and/or its suppliers, and is protected under applicable copyright
+laws. You may not combine this software with "viral" open-source
+software in order to form a larger program.
+
+THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
+NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
+NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
+CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, FOR ANY REASON WHATSOEVER.
+
+This is part of revision 2.1.0.12573 of the DK-TM4C129X Firmware Package.
|
