Subversion Repositories igor

 /*

 * Copyright (c) 2003, Adam Dunkels.

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. The name of the author may not be used to endorse or promote

 *    products derived from this software without specific prior

 *    written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY

 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE

 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 *

 * This file is part of the uIP TCP/IP stack.

 *

 * $Id: shell.c,v 1.1 2006/06/07 09:43:54 adam Exp $

 *

 */

#include "shell.h"

#include <device.h>

#include <stdio.h>

#include <string.h>

#include <ctype.h>

#include "../dev/mmc.h"

static struct {

        struct buf readbuf;

        struct buf writebuf;

} telnet_data;

static igordev_read_fn_t  telnet_recv;

static igordev_write_fn_t telnet_send;

static igordev_init_fn_t  init;

static igordev_flush_fn_t telnet_flush;

void hexdump(uint8_t * p, uint16_t len);

struct igordev igordev_telnet = {

        .init = init,

        .read = telnet_recv,

        .write = telnet_send,

        .flush = telnet_flush,

        .read_status = 0,

        .write_status = 0,

        .priv = &telnet_data

};

void init() {

        volatile struct req *req;

        buf_init(&telnet_data.readbuf);

        buf_init(&telnet_data.writebuf);

        igordev_telnet.read_status = igordev_telnet.write_status = IDEV_STATUS_OK;

}

/*

 * Read num bytes from device and place it into data.

 * Data assumed to be a buffer large enough for num bytes.

 * Addr here is ignored.

 */

uint8_t

telnet_recv(uint64_t addr, uint8_t *data, uint8_t num)

{

        struct buf *buf;

        uint8_t byte;

        uint8_t i;

        buf = &telnet_data.readbuf;

        for (i = 0; i < num; i++) {

                buf_read(buf, &byte, 1);

                if (BUF_EMPTY(buf))

                        break;

                *(data + i) = byte;

        }

        return i;

}

/*

 * Read from data to device

 */

uint8_t

telnet_send(uint64_t addr, uint8_t *data, uint8_t num)

{

        struct buf *buf;

        uint8_t i = 0;

        if (num > 0 && data != NULL) {

                /* Copy data into write buffer. */

                buf = &telnet_data.writebuf;

                i = buf_write(buf, data, num);

        }

        return i;

}

/* Do nothing */

static void

telnet_flush(void)

{

        struct buf *buf;

        buf = &telnet_data.writebuf;

        char *data;

        int8_t i = 0;

        igordev_telnet.write_status = IDEV_STATUS_BUSY;

        /* Flush as long as it is ok. */

        while (!BUF_EMPTY(buf)) {

                buf_read(buf, data, (uint8_t)buf_readsleft(buf));

                i++;

        }

        *(data + i) = '\0';

        shell_output(data, "");

        igordev_telnet.write_status = IDEV_STATUS_OK;

}

struct ptentry {

  char *commandstr;

  void (* pfunc)(char *str);

};

#define COMMAND_MODE 0

#define LISP_MODE 1

#define SHELL_PROMPT "IGOR> "

#define LISP_PROMPT "LISP> "

uint8_t mode = COMMAND_MODE;

/*---------------------------------------------------------------------------*/

static void

parse(register char *str, struct ptentry *t)

{

  struct ptentry *p;

  for(p = t; p->commandstr != NULL; ++p) {

    if(strncmp(p->commandstr, str, strlen(p->commandstr)) == 0) {

      break;

    }

  }

  p->pfunc(str);

}

/*---------------------------------------------------------------------------*/

static void

inttostr(register char *str, unsigned int i)

{

  str[0] = '0' + i / 100;

  if(str[0] == '0') {

    str[0] = ' ';

  }

  str[1] = '0' + (i / 10) % 10;

  if(str[0] == ' ' && str[1] == '0') {

    str[1] = ' ';

  }

  str[2] = '0' + i % 10;

  str[3] = ' ';

  str[4] = 0;

}

/*---------------------------------------------------------------------------*/

static void

help(char *str)

{

  shell_output("Available commands:", "");

  shell_output("help, ?    - show help", "");

  shell_output("+, -       - read SD card", "");

  shell_output("lisp       - switch to lisp mode", "");

  shell_output("exit       - exit shell", "");

}

static void

switch_lisp(char *str)

{

        shell_output("Switching to Lisp mode", "");

        mode = LISP_MODE;

}

uint32_t lba = 0;

void

read_sd(void)

{

        char lbastr[5];

        inttostr(lbastr, lba);

        shell_output("Reading SD card: Sector", lbastr);

        uint8_t data[512];

        if (mmc_readsector(lba, data) == 0)

                hexdump(data, 512);

        else

                shell_output("Failed to read that sector", "");

}

static void

sd_plus(char *str)

{

        lba++;

        read_sd();

}

static void

sd_minus(char *str)

{

        if (lba > 0)

                lba--;

        read_sd();

}

/*---------------------------------------------------------------------------*/

static void

unknown(char *str)

{

  if(strlen(str) > 0) {

    shell_output("Unknown command: ", str);

  }

}

/*---------------------------------------------------------------------------*/

static struct ptentry parsetab[] =

  {{"lisp", switch_lisp},

   {"+", sd_plus},

   {"-", sd_minus},

   {"help", help},

   {"exit", shell_quit},

   {"?", help},

   /* Default action */

   {NULL, unknown}};

/*---------------------------------------------------------------------------*/

void

shell_init(void)

{

//FIXME remove, this is for testing only

mmc_init();

}

/*---------------------------------------------------------------------------*/

void

shell_start(void)

{

        mode = COMMAND_MODE;

        shell_output("Greetings and salutations, sir or madam.", "");

        shell_output("Welcome to the IGOR command shell!", "");

        shell_output("How may I serve you today?", "");

        shell_output("Type '?' and return for help.", "");

        shell_prompt(SHELL_PROMPT);

}

/*---------------------------------------------------------------------------*/

void

shell_input(char *cmd)

{

        if (mode == COMMAND_MODE) {

                parse(cmd, parsetab);

        }

        if (mode == COMMAND_MODE) {

                shell_prompt(SHELL_PROMPT);

        } else {

                struct buf *buf;

                buf = &telnet_data.readbuf;

                buf_write(buf, cmd, strlen(cmd));

                shell_prompt(LISP_PROMPT);

        }

}

/*---------------------------------------------------------------------------*/

void hexdump(uint8_t * p, uint16_t len)

{

        int i,j;

        for (i=0;i<len/16;i++)

        {

                char str0[70] = "";

                char str1[5];

                sprintf(str1, "%03x ",i*16);

                strcat(str0, str1);

                for (j=0;j<16;j++) {

                        char str2[5];

                        sprintf(str2, "%02x ",p[i*16+j]);

                        strcat(str0, str2);

                }

                for (j=0;j<16;j++) {

                        char str3[5];

                        sprintf(str3, "%c", isalpha(p[i*16+j]) ? p[i*16+j] : '.');

                        strcat(str0, str3);

                }

                shell_output(str0, "");

        }

}