#ifndef _SHELL_API_H_
#define _SHELL_API_H_

#include <sys/ksys.h>

#define SHELL_OK    0
#define SHELL_EXIT  1
#define SHELL_PUTC  2
#define SHELL_PUTS  3
#define SHELL_GETC  4
#define SHELL_GETS  5
#define SHELL_CLS   6
#define SHELL_PID   7
#define SHELL_PING  8

#define SHELL_SHM_MAX  1024*16

extern char __shell_shm_name[32]; 
extern char *__shell_shm;
extern int __shell_is_init;
extern void __shell_init();

#define __SHELL_WAIT() while (*__shell_shm) _ksys_delay(5)

extern int  shell_ping();
extern unsigned shell_get_pid();
extern void shell_exit();

extern char shell_getc();
extern void shell_gets(char *str, int n);

extern void shell_putc(char c);
extern void shell_puts(const char *str);
extern void shell_printf(const char *format,...);

extern void shell_cls();
#endif