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avrdude/term.c

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/*
* Copyright 2000 Brian S. Dean <bsd@bsdhome.com>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY BRIAN S. DEAN ``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 BRIAN S. DEAN 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.
*
*/
/* $Id$ */
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <readline/readline.h>
#include <readline/history.h>
#include "avr.h"
extern char * progname;
extern char progbuf[];
struct command {
char * name;
int (*func)(int fd, struct avrpart * p, int argc, char *argv[]);
char * desc;
};
int cmd_dump (int fd, struct avrpart * p, int argc, char *argv[]);
int cmd_write (int fd, struct avrpart * p, int argc, char *argv[]);
int cmd_erase (int fd, struct avrpart * p, int argc, char *argv[]);
int cmd_sig (int fd, struct avrpart * p, int argc, char *argv[]);
int cmd_part (int fd, struct avrpart * p, int argc, char *argv[]);
int cmd_help (int fd, struct avrpart * p, int argc, char *argv[]);
int cmd_quit (int fd, struct avrpart * p, int argc, char *argv[]);
struct command cmd[] = {
{ "dump", cmd_dump, "dump memory : %s [eeprom|flash] <addr> <N-Bytes>" },
{ "write", cmd_write, "write memory : %s [eeprom|flash] <addr> <b1> <b2> ... <bN>" },
{ "erase", cmd_erase, "perform a chip erase" },
{ "sig", cmd_sig, "display device signature bytes" },
{ "part", cmd_part, "display the current part settings" },
{ "help", cmd_help, "help" },
{ "?", cmd_help, "help" },
{ "quit", cmd_quit, "quit" }
};
#define NCMDS (sizeof(cmd)/sizeof(struct command))
int nexttok ( char * buf, char ** tok, char ** next )
{
char * q, * n;
q = buf;
while (isspace(*q))
q++;
/* isolate first token */
n = q+1;
while (*n && !isspace(*n))
n++;
if (*n) {
*n = 0;
n++;
}
/* find start of next token */
while (isspace(*n))
n++;
*tok = q;
*next = n;
return 0;
}
int hexdump_line ( char * buffer, unsigned char * p, int n, int pad )
{
char * hexdata = "0123456789abcdef";
char * b;
int i, j;
b = buffer;
j = 0;
for (i=0; i<n; i++) {
if (i && ((i % 8) == 0))
b[j++] = ' ';
b[j++] = hexdata[(p[i] & 0xf0) >> 4];
b[j++] = hexdata[(p[i] & 0x0f)];
if (i < 15)
b[j++] = ' ';
}
for (i=j; i<pad; i++)
b[i] = ' ';
b[i] = 0;
for (i=0; i<pad; i++) {
if (!((b[i] == '0') || (b[i] == ' ')))
return 0;
}
return 1;
}
int chardump_line ( char * buffer, unsigned char * p, int n, int pad )
{
int i;
char b [ 128 ];
for (i=0; i<n; i++) {
memcpy ( b, p, n );
buffer[i] = '.';
if (isalpha(b[i]) || isdigit(b[i]) || ispunct(b[i]))
buffer[i] = b[i];
else if (isspace(b[i]))
buffer[i] = ' ';
}
for (i=n; i<pad; i++)
buffer[i] = ' ';
buffer[i] = 0;
return 0;
}
int hexdump_buf ( FILE * f, int startaddr, char * buf, int len )
{
int addr;
int i, n;
unsigned char * p;
char dst1[80];
char dst2[80];
addr = startaddr;
i = 0;
p = (unsigned char *)buf;
while (len) {
n = 16;
if (n > len)
n = len;
hexdump_line(dst1, p, n, 48);
chardump_line(dst2, p, n, 16);
fprintf(stdout, "%04x %s |%s|\n", addr, dst1, dst2);
len -= n;
addr += n;
p += n;
}
return 0;
}
int cmd_dump ( int fd, struct avrpart * p, int argc, char * argv[] )
{
char * e;
int i, l;
char * buf;
int maxsize;
static AVRMEM memtype=AVR_FLASH;
static unsigned short addr=0;
static int len=64;
if (argc == 1) {
addr += len;
}
else {
if (argc != 4) {
fprintf(stderr, "Usage: dump flash|eeprom <addr> <len>\n");
return -1;
}
l = strlen(argv[1]);
if (strncasecmp(argv[1],"flash",l)==0) {
memtype = AVR_FLASH;
}
else if (strncasecmp(argv[1],"eeprom",l)==0) {
memtype = AVR_EEPROM;
}
else {
fprintf(stderr, "%s (dump): invalid memory type \"%s\"\n",
progname, argv[1]);
return -1;
}
addr = strtoul(argv[2], &e, 0);
if (*e || (e == argv[2])) {
fprintf(stderr, "%s (dump): can't parse address \"%s\"\n",
progname, argv[2]);
return -1;
}
len = strtol(argv[3], &e, 0);
if (*e || (e == argv[3])) {
fprintf(stderr, "%s (dump): can't parse length \"%s\"\n",
progname, argv[3]);
return -1;
}
}
maxsize = p->memsize[memtype];
if (addr > maxsize) {
fprintf(stderr,
"%s (dump): address 0x%04x is out of range for %s memory\n",
progname, addr, avr_memtstr(memtype));
return -1;
}
/* trim len if nessary to not read past the end of memory */
if ((addr + len) > maxsize)
len = maxsize - addr;
buf = malloc(len);
if (buf == NULL) {
fprintf(stderr, "%s (dump): out of memory\n", progname);
return -1;
}
for (i=0; i<len; i++)
buf[i] = avr_read_byte(fd, p, memtype, addr+i);
hexdump_buf(stdout, addr, buf, len);
fprintf(stdout, "\n");
free(buf);
return 0;
}
int cmd_write ( int fd, struct avrpart * p, int argc, char * argv[] )
{
char * e;
int i, l;
int len, maxsize;
AVRMEM memtype;
unsigned short addr;
char * buf;
int rc;
if (argc < 4) {
fprintf(stderr,
"Usage: write flash|eeprom <addr> <byte1> <byte2> ... byteN>\n");
return -1;
}
l = strlen(argv[1]);
if (strncasecmp(argv[1],"flash",l)==0) {
memtype = AVR_FLASH;
}
else if (strncasecmp(argv[1],"eeprom",l)==0) {
memtype = AVR_EEPROM;
}
else {
fprintf(stderr, "%s (write): invalid memory type \"%s\"\n",
progname, argv[1]);
return -1;
}
maxsize = p->memsize[memtype];
addr = strtoul(argv[2], &e, 0);
if (*e || (e == argv[2])) {
fprintf(stderr, "%s (write): can't parse address \"%s\"\n",
progname, argv[2]);
return -1;
}
if (addr > maxsize) {
fprintf(stderr,
"%s (write): address 0x%04x is out of range for %s memory\n",
progname, addr, avr_memtstr(memtype));
return -1;
}
/* number of bytes to write at the specified address */
len = argc - 3;
if ((addr + len) > maxsize) {
fprintf(stderr,
"%s (write): selected address and # bytes exceed "
"range for %s memory\n",
progname, avr_memtstr(memtype));
return -1;
}
buf = malloc(len);
if (buf == NULL) {
fprintf(stderr, "%s (write): out of memory\n", progname);
return -1;
}
for (i=3; i<argc; i++) {
buf[i-3] = strtoul(argv[i], &e, 0);
if (*e || (e == argv[i])) {
fprintf(stderr, "%s (write): can't parse byte \"%s\"\n",
progname, argv[i]);
return -1;
}
}
for (i=0; i<len; i++) {
rc = avr_write_byte(fd, p, memtype, addr+i, buf[i]);
if (rc) {
fprintf(stderr, "%s (write): error writing 0x%02x at 0x%04x\n",
progname, buf[i], addr+i);
}
}
free(buf);
fprintf(stdout, "\n");
return 0;
}
int cmd_erase ( int fd, struct avrpart * p, int argc, char * argv[] )
{
fprintf(stderr, "%s: erasing chip\n", progname );
avr_chip_erase(fd,p);
return 0;
}
int cmd_part ( int fd, struct avrpart * p, int argc, char * argv[] )
{
fprintf(stdout, "\n");
avr_display(stdout, p, "");
fprintf(stdout, "\n");
return 0;
}
int cmd_sig ( int fd, struct avrpart * p, int argc, char * argv[] )
{
unsigned char sig[4]; /* AVR signature bytes */
int i;
avr_signature(fd, sig);
fprintf(stdout, "\nDevice signature = 0x");
for (i=0; i<4; i++)
fprintf(stdout, "%02x", sig[i]);
fprintf(stdout, "\n\n");
return 0;
}
int cmd_quit ( int fd, struct avrpart * p, int argc, char * argv[] )
{
return 1;
}
int cmd_help ( int fd, struct avrpart * p, int argc, char * argv[] )
{
int i;
fprintf(stdout, "Valid commands:\n\n" );
for (i=0; i<NCMDS; i++) {
fprintf(stdout, " %-6s : ", cmd[i].name );
fprintf(stdout, cmd[i].desc, cmd[i].name);
fprintf(stdout, "\n");
}
fprintf(stdout, "\n");
return 0;
}
int tokenize ( char * s, char *** argv )
{
int i, n, l, nargs, offset;
int len, slen;
char * buf;
int bufsize;
char ** bufv;
char * q, * r;
char * nbuf;
char ** av;
slen = strlen(s);
/*
* initialize allow for 20 arguments, use realloc to grow this if
* necessary
*/
nargs = 20;
bufsize = slen + 20;
buf = malloc(bufsize);
bufv = (char **) malloc(nargs*sizeof(char *));
for (i=0; i<nargs; i++) {
bufv[i] = NULL;
}
buf[0] = 0;
n = 0;
l = 0;
nbuf = buf;
r = s;
while (*r) {
nexttok(r, &q, &r);
strcpy(nbuf, q);
bufv[n] = nbuf;
len = strlen(q);
l += len + 1;
nbuf += len + 1;
nbuf[0] = 0;
n++;
if ((n % 20) == 0) {
/* realloc space for another 20 args */
bufsize += 20;
nargs += 20;
buf = realloc(buf, bufsize);
bufv = realloc(bufv, nargs*sizeof(char *));
nbuf = &buf[l];
for (i=n; i<nargs; i++)
bufv[i] = NULL;
}
}
/*
* We have parsed all the args, n == argc, bufv contains an array of
* pointers to each arg, and buf points to one memory block that
* contains all the args, back to back, seperated by a nul
* terminator. Consilidate bufv and buf into one big memory block
* so that the code that calls us, will have an easy job of freeing
* this memory.
*/
av = (char **) malloc(slen + n + (n+1)*sizeof(char *));
q = (char *)&av[n+1];
memcpy(q, buf, l);
for (i=0; i<n; i++) {
offset = bufv[i] - buf;
av[i] = q + offset;
}
av[i] = NULL;
free(buf);
free(bufv);
*argv = av;
return n;
}
int do_cmd ( int fd, struct avrpart * p, int argc, char * argv[] )
{
int i;
int hold;
int len;
len = strlen(argv[0]);
hold = -1;
for (i=0; i<NCMDS; i++) {
if (strcasecmp(argv[0], cmd[i].name) == 0) {
return cmd[i].func(fd, p, argc, argv);
}
else if (strncasecmp(argv[0], cmd[i].name, len)==0) {
if (hold != -1) {
fprintf(stderr, "%s: command \"%s\" is ambiguous\n",
progname, argv[0]);
return -1;
}
hold = i;
}
}
if (hold != -1)
return cmd[hold].func(fd, p, argc, argv);
fprintf(stderr, "%s: invalid command \"%s\"\n",
progname, argv[0]);
return -1;
}
int terminal_mode ( int fd, struct avrpart * p )
{
char * cmdbuf;
int i, len;
char * q;
int rc;
int argc;
char ** argv;
rc = 0;
while ((cmdbuf = readline("avrprog> ")) != NULL) {
len = strlen(cmdbuf);
if (len >= 1)
add_history(cmdbuf);
/*
* find the start of the command, skipping any white space
*/
q = cmdbuf;
while (*q && isspace(*q))
q++;
/* skip blank lines and comments */
if (!*q || (*q == '#'))
continue;
/* tokenize command line */
argc = tokenize(q, &argv);
fprintf(stdout, ">>> ");
for (i=0; i<argc; i++)
fprintf(stdout, "%s ", argv[i]);
fprintf(stdout, "\n");
/* run the command */
rc = do_cmd(fd, p, argc, argv);
free(argv);
if (rc > 0) {
rc = 0;
break;
}
free(cmdbuf);
}
return rc;
}
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