io_lib.h

CGI程序实例

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>		// for ioctl

#include "lcd16207.h"

#define LEDS_RED 	"/dev/leds_red"
#define LEDS_GREEN	"/dev/leds_green"
#define SEG7		"/dev/seg7"
#define SWITCHES	"/dev/switches"
#define BUTTONS		"/dev/buttons"
#define LCD		"/dev/lcd16207"

#define STRING_LEN 10

typedef enum{leds_red, leds_green, seg7, switches, buttons, lcd} files;

unsigned long int read_dev(files file);

void write_dev(files file, char *val);

int write_lcd(char *msg);