priority.c

Xilinx ISE&EDK 8.2平台的快速点餐系统设计

#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <string.h>

#define LEDFILE "/dev/xup_v2pro_led"
#define DIPFILE "/dev/xup_v2pro_dip"

int main()
{
    printf("Content-type: text/html\n\n");
    
    /*FILE *fp=fopen("desk.txt","r");
    char out=fgetc(fp);
    while(out!=EOF){
     printf("%c",out);
     out=fgetc(fp);
     }
     fclose(fp);*/
     
    unsigned char c;
	int ledhandle = open(LEDFILE, O_RDWR);
	unsigned char *paramStr;
	paramStr=getenv("QUERY_STRING");
	if(paramStr)
	{
		paramStr=strdup(paramStr);
	}else
	{
	return -1;
	}
	if (paramStr[0]=='x')
	{
		int seq;
		seq = paramStr[6]-'0';
		if (seq<=7)
			c = 1 << seq;
		else if (seq ==8)
			c = 0xff;
		else
			c = 0x00;
	} else
	{
		int i = 0;
		c = 0x00;
		//unsigned char *str = NULL;
		//sscanf(paramStr,"input1=%s",str);
		for(i = 7; paramStr[i] != '\0';i++)
			if (((paramStr[i]-'0')>=0) && ((paramStr[i]-'0')<=7))
				c |= 1 << (paramStr[i]-'0');
	}
	if(write(ledhandle, &c, 1, 0) < 0)
		printf("op Error writing xled<br>\n");
	
	close(ledhandle);

	
	
	 char buf[14000];
    FILE *fp=fopen("desk.txt","r");  
    fread(buf,14000,1,fp);
    fclose(fp);
    printf("%s",buf);

	fflush(stdout);
	return 0;


}