Desktop/xinu_mips-1.0.2.tar/xinu_mips-1.0.2/shell/xsh_reset.c

Go to the documentation of this file.

/* Embedded XINU, Copyright (C) 2007.  All rights reserved. */

#include <kernel.h>
#include <gpio.h>
#include <stdio.h>
#include <string.h>

command xsh_reset(ushort stdin, ushort stdout, ushort stderr,
                  ushort nargs, char *args[])
{
        struct gpio_csreg *pgcsr; /* pointer to gpio registers     */

        /* Output help, if '--help' argument was supplied */
        if (nargs == 2 && strncmp(args[1],"--help",6) == 0)
        {
                fprintf(stdout, "Usage: reset\n");
                fprintf(stdout, "Performs a soft reset of the router.\n");
                fprintf(stdout, "\t--help\t display this help and exit\n");
                return SYSERR;
        }
        
        /* Check for correct number of arguments */
        if (nargs > 1) 
        {
                fprintf(stderr, "reset: too many arguments\n");
                fprintf(stderr, "Try 'reset --help' for more information\n");
                return SYSERR;
        }

        /* Initialize pointers */
        pgcsr = (struct gpio_csreg *)GPIO_BASE;

        /* Reset router */
        pgcsr->input |= GPIO_BUT_RESET;

        return OK;
}

---