mspdebug/main.c

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/* MSPDebug - debugging tool for MSP430 MCUs
* Copyright (C) 2009, 2010 Daniel Beer
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include "dis.h"
#include "device.h"
#include "binfile.h"
#include "stab.h"
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#include "util.h"
#include "gdb.h"
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#include "rtools.h"
#include "sym.h"
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#include "devcmd.h"
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#include "sim.h"
#include "bsl.h"
#include "fet.h"
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#include "uif.h"
#include "rf2500.h"
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static void io_prefix(const char *prefix, u_int16_t pc,
u_int16_t addr, int is_byte)
{
char name[64];
if (!stab_nearest(pc, name, sizeof(name), &pc)) {
printf("%s", name);
if (pc)
printf("+0x%x", pc);
} else {
printf("0x%04x", pc);
}
printf(": IO %s.%c: 0x%04x", prefix, is_byte ? 'B' : 'W', addr);
if (!stab_nearest(addr, name, sizeof(name), &addr)) {
printf(" (%s", name);
if (addr)
printf("+0x%x", addr);
printf(")");
}
}
static int fetch_io(void *user_data, u_int16_t pc,
u_int16_t addr, int is_byte, u_int16_t *data_ret)
{
io_prefix("READ", pc, addr, is_byte);
for (;;) {
char text[128];
int len;
int data;
printf("? ");
fflush(stdout);
if (!fgets(text, sizeof(text), stdin)) {
printf("\nAborted IO request\n");
return -1;
}
len = strlen(text);
while (len && isspace(text[len - 1]))
len--;
text[len] = 0;
if (!len)
return 0;
if (!stab_exp(text, &data)) {
if (data_ret)
*data_ret = data;
return 0;
}
}
return 0;
}
static void store_io(void *user_data, u_int16_t pc,
u_int16_t addr, int is_byte, u_int16_t data)
{
io_prefix("WRITE", pc, addr, is_byte);
if (is_byte)
printf(" => 0x%02x\n", data & 0xff);
else
printf(" => 0x%04x\n", data);
}
static void usage(const char *progname)
{
fprintf(stderr,
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"Usage: %s [options] -R [-v voltage] [command ...]\n"
" %s [options] -u <device> [-j] [-v voltage] [command ...]\n"
" %s [options] -B <device> [command ...]\n"
" %s [options] -s [command ...]\n"
"\n"
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" -R\n"
" Open the first available RF2500 device on the USB bus.\n"
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" -u device\n"
" Open the given tty device (MSP430 UIF compatible devices).\n"
" -j\n"
" Use JTAG, rather than spy-bi-wire (UIF devices only).\n"
" -v voltage\n"
" Set the supply voltage, in millivolts.\n"
" -B device\n"
" Debug the FET itself through the bootloader.\n"
" -s\n"
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" Start in simulation mode.\n"
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" -n\n"
" Do not read ~/.mspdebug on startup.\n"
" -?\n"
" Show this help text.\n"
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"\n"
"By default, the first RF2500 device on the USB bus is opened.\n"
"\n"
"If commands are given, they will be executed. Otherwise, an interactive\n"
"command reader is started.\n",
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progname, progname, progname, progname);
}
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static void process_rc_file(cproc_t cp)
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{
const char *home = getenv("HOME");
char text[256];
if (!home)
return;
snprintf(text, sizeof(text), "%s/.mspdebug", home);
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if (!access(text, F_OK))
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cproc_process_file(cp, text);
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}
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#define MODE_RF2500 0x01
#define MODE_UIF 0x02
#define MODE_UIF_BSL 0x04
#define MODE_SIM 0x08
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struct cmdline_args {
const char *uif_device;
const char *bsl_device;
int mode;
int want_jtag;
int no_rc;
int vcc_mv;
};
static int parse_cmdline_args(int argc, char **argv,
struct cmdline_args *args)
{
int opt;
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while ((opt = getopt(argc, argv, "u:jv:B:sR?n")) >= 0)
switch (opt) {
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case 'R':
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args->mode |= MODE_RF2500;
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break;
case 'u':
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args->uif_device = optarg;
args->mode |= MODE_UIF;
break;
case 'v':
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args->vcc_mv = atoi(optarg);
break;
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case 'j':
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args->want_jtag = 1;
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break;
case 'B':
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args->bsl_device = optarg;
args->mode |= MODE_UIF_BSL;
break;
case 's':
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args->mode |= MODE_SIM;
break;
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case 'n':
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args->no_rc = 1;
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break;
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case '?':
usage(argv[0]);
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return 0;
default:
fprintf(stderr, "Invalid argument: %c\n"
"Try -? for help.\n", opt);
return -1;
}
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/* Check for incompatible arguments */
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if (args->mode & (args->mode - 1)) {
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fprintf(stderr, "Multiple incompatible options specified.\n"
"Try -? for help.\n");
return -1;
}
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if (!args->mode) {
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fprintf(stderr, "You need to specify an operating mode.\n"
"Try -? for help.\n");
return -1;
}
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return 0;
}
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device_t setup_device(const struct cmdline_args *args)
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{
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device_t msp430_dev = NULL;
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transport_t trans = NULL;
/* Open a device */
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if (args->mode == MODE_SIM) {
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msp430_dev = sim_open(fetch_io, store_io, NULL);
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} else if (args->mode == MODE_UIF_BSL) {
msp430_dev = bsl_open(args->bsl_device);
} else if (args->mode == MODE_RF2500 || args->mode == MODE_UIF) {
int flags = 0;
/* Open the appropriate transport */
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if (args->mode == MODE_UIF) {
trans = uif_open(args->uif_device);
} else {
trans = rf2500_open();
flags |= FET_PROTO_RF2500;
}
if (!trans)
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return NULL;
/* Then initialize the device */
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if (!args->want_jtag)
flags |= FET_PROTO_SPYBIWIRE;
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msp430_dev = fet_open(trans, flags, args->vcc_mv);
}
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if (!msp430_dev) {
if (trans)
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trans->destroy(trans);
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return NULL;
}
return msp430_dev;
}
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cproc_t setup_cproc(const struct cmdline_args *args)
{
device_t msp430_dev = setup_device(args);
cproc_t cp;
if (!msp430_dev)
return NULL;
cp = cproc_new(msp430_dev);
if (!cp) {
msp430_dev->destroy(msp430_dev);
return NULL;
}
if (sym_register(cp) < 0 ||
devcmd_register(cp) < 0 ||
gdb_register(cp) < 0 ||
rtools_register(cp) < 0) {
cproc_destroy(cp);
return NULL;
}
return cp;
}
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int main(int argc, char **argv)
{
struct cmdline_args args = {0};
cproc_t cp;
int ret = 0;
puts(
"MSPDebug version 0.6 - debugging tool for MSP430 MCUs\n"
"Copyright (C) 2009, 2010 Daniel Beer <daniel@tortek.co.nz>\n"
"This is free software; see the source for copying conditions. There is NO\n"
"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
args.vcc_mv = 3000;
if (parse_cmdline_args(argc, argv, &args) < 0)
return -1;
ctrlc_init();
if (stab_init() < 0)
return -1;
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cp = setup_cproc(&args);
if (!cp) {
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stab_exit();
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return -1;
}
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if (!args.no_rc)
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process_rc_file(cp);
/* Process commands */
if (optind < argc) {
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while (optind < argc) {
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if (cproc_process_command(cp, argv[optind++]) < 0) {
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ret = -1;
break;
}
}
} else {
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cproc_reader_loop(cp);
}
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cproc_destroy(cp);
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stab_exit();
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return ret;
}