blinkleds.c

Zword公司的Rabbit2000系列相关文件

/*******************************************************************************
	blinkleds.c
   Z-World 2004

   The following programs are used with RCM3700 series controllers with
	prototyping boards.

   Description
   ===========
	This program demonstrates a very basic development example using the
	enhanced RabbitWeb HTTP library and web interface to change the rate
   that the LED's	blink on the prototyping board.

   Instructions
   =============
   1.  Configure IP address in TCPIP_CONFIG.LIB,
       Compile and run this program.
   2.  Observe the LED's on the prototyping board blink at different rates.
   3.  Open browser with address http://xxx.xxx.xxx.xxx where xxx.. is the
       IP address.
   4.  Enter different frequencies and press Submit button to observe rate
   	 change.

*******************************************************************************/
/***********************************
 * Configuration                   *
 * -------------                   *
 * All fields in this section must *
 * be altered to match your local  *
 * network settings.               *
 ***********************************/
/*
 * Pick the predefined TCP/IP configuration for this sample.  See
 * LIB\TCPIP\TCP_CONFIG.LIB for instructions on how to set the
 * configuration.
 */
#define TCPCONFIG 1

/*
 * This is needed to be able to use the HTTP enhancements and the ZHTML
 * scripting language.
 */
#define USE_RABBITWEB 1

// include libraries
#use "dcrtcp.lib"
#use "http.lib"

/*
 *  ximport is a Dynamic C language feature that takes the binary image
 *  of a file, places it in extended memory on the controller, and
 *  associates a symbol with the physical address on the controller of
 *  the image.
 *
 */
#ximport "/pages/rabbit1.gif"       rabbit1_gif
#ximport "/pages/blinkrate.zhtml"	blinkrate_zhtml

/*
 *  http_types gives the HTTP server hints about handling incoming
 *  requests.  The server compares the extension of the incoming
 *  request with the http_types list and returns the second field
 *  as the Content-Type field.  The third field defines a custom
 *  function to handle that mime type.
 *
 *  You can get a list of mime types from Netscape's browser in:
 *
 *  Edit->Preferences->Navigator->Applications
 *
 * the default for / must be first */
SSPEC_MIMETABLE_START
	SSPEC_MIME_FUNC(".zhtml", "text/html", zhtml_handler),
	SSPEC_MIME(".html", "text/html"),
	SSPEC_MIME(".gif", "image/gif")
SSPEC_MIMETABLE_END

/*
 *  http_flashspec assocates the file image we brought in with ximport
 *  and associates it with its name on the webserver.  In this example
 *  the file "samples/http/pages/static.html" will be sent to the
 *  client when they request either "http://yoururl.com/" or
 *  "http://yoururl.com/index.html"
 *
 */

//blink rate in HZ
struct ledControl
{
	unsigned int ledBlinkRate[4];
   enum {
   	OFF = 0,
      ON = 1
   };
   byte ledStatus[4];
   unsigned long period[4];
}ledControl;

// define structure member as web variable
#web ledControl.ledBlinkRate[@] (($ledControl.ledBlinkRate[@] > 0) && \
         ($ledControl.ledBlinkRate[@] <= 35))

SSPEC_RESOURCETABLE_START
	SSPEC_RESOURCE_XMEMFILE("/", blinkrate_zhtml),
	SSPEC_RESOURCE_XMEMFILE("/index.zhtml", blinkrate_zhtml),
	SSPEC_RESOURCE_XMEMFILE("/rabbit1.gif", rabbit1_gif)
SSPEC_RESOURCETABLE_END


void updatefcn(void);

#web_update ledControl.ledBlinkRate[@] updatefcn

void updatefcn(void)
{
	ledControl.period[0] = 500/ledControl.ledBlinkRate[0];
	ledControl.period[1] = 500/ledControl.ledBlinkRate[1];
}


#define DS1 1			//led, port F bit 6
#define DS2 2			//led, port F bit 7

// output function to control protoboard LED's
void pbledOut(int channel, int onoff)
{
	// works for port F bits 6 and 7 only
	BitWrPortI(PFDR, &PFDRShadow, onoff, channel+5);
}

void main()
{
	float period;

	ledControl.ledBlinkRate[0] = 15;
	ledControl.ledBlinkRate[1] = 5;

   ledControl.ledStatus[0] = OFF;
	ledControl.ledStatus[1] = ON;
 	updatefcn();

   brdInit();				//initialize board for this demo

	/*
	 *  sock_init initializes the TCP/IP stack.
	 *  http_init initializes the web server.
    */
   sock_init();
   http_init();

	/*
	 *  tcp_reserveport causes the web server to ignore requests when there
	 *  isn't an available socket (HTTP_MAXSERVERS are all serving index_html
	 *  or rabbit1.gif).  This saves some memory, but can cause the client
	 *  delays when retrieving pages.
	 */
   tcp_reserveport(80);

   while (1) {
  	   // http_handler needs to be called to handle the active http servers.
      http_handler();

	  	costate
      {
      	waitfor(DelayMs(ledControl.period[0]));
	      pbledOut(DS1, ledControl.ledStatus[0]);
         ledControl.ledStatus[0] = !ledControl.ledStatus[0];
      }

	  	costate
      {
      	waitfor(DelayMs(ledControl.period[1]));
	      pbledOut(DS2, ledControl.ledStatus[1]);
         ledControl.ledStatus[1] = !ledControl.ledStatus[1];
       }
   }
}