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picocom.c
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picocom.c
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/* vi: set sw=4 ts=4:
*
* picocom.c
*
* simple dumb-terminal program. Helps you manually configure and test
* stuff like modems, devices w. serial ports etc.
*
* by Nick Patavalis (npat@efault.net)
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include <assert.h>
#include <stdarg.h>
#include <signal.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <limits.h>
#include <sys/time.h>
#define _GNU_SOURCE
#include <getopt.h>
#include "term.h"
/**********************************************************************/
#define KEY_EXIT '\x18' /* C-x: exit picocom */
#define KEY_QUIT '\x11' /* C-q: exit picocom without reseting port */
#define KEY_PULSE '\x10' /* C-p: pulse DTR */
#define KEY_TOGGLE '\x14' /* C-t: toggle DTR */
#define KEY_BAUD_UP '\x15' /* C-u: increase baudrate (up) */
#define KEY_BAUD_DN '\x04' /* C-d: decrase baudrate (down) */
#define KEY_FLOW '\x06' /* C-f: change flowcntrl mode */
#define KEY_PARITY '\x19' /* C-y: change parity mode */
#define KEY_BITS '\x02' /* C-b: change number of databits */
#define KEY_STATUS '\x16' /* C-v: show program option */
#define KEY_SEND '\x13' /* C-s: send file */
#define KEY_RECEIVE '\x12' /* C-r: receive file */
#define KEY_BREAK '\x1c' /* C-\: break */
#define KEY_TIMESTAMP '\x09' /* C-i: timestamp */
#define STO STDOUT_FILENO
#define STI STDIN_FILENO
/**********************************************************************/
struct {
char port[128];
int baud;
enum flowcntrl_e flow;
char *flow_str;
enum parity_e parity;
char *parity_str;
int databits;
int noinit;
int noreset;
#ifdef UUCP_LOCK_DIR
int nolock;
#endif
unsigned char escape;
char send_cmd[128];
char receive_cmd[128];
} opts = {
.port = "",
.baud = 115200,
.flow = FC_NONE,
.flow_str = "none",
.parity = P_NONE,
.parity_str = "none",
.databits = 8,
.noinit = 0,
.noreset = 0,
#ifdef UUCP_LOCK_DIR
.nolock = 0,
#endif
.escape = '\x01',
.send_cmd = "ascii_xfr -s -v -l10",
.receive_cmd = "rz -vv"
};
int tty_fd;
/**********************************************************************/
#ifdef UUCP_LOCK_DIR
/* use HDB UUCP locks .. see
* <http://www.faqs.org/faqs/uucp-internals> for details
*/
char lockname[_POSIX_PATH_MAX] = "";
int
uucp_lockname(const char *dir, const char *file)
{
char *p, *cp;
struct stat sb;
if ( ! dir || *dir == '\0' || stat(dir, &sb) != 0 )
return -1;
/* cut-off initial "/dev/" from file-name */
p = strchr(file + 1, '/');
p = p ? p + 1 : (char *)file;
/* replace '/'s with '_'s in what remains (after making a copy) */
p = cp = strdup(p);
do { if ( *p == '/' ) *p = '_'; } while(*p++);
/* build lockname */
snprintf(lockname, sizeof(lockname), "%s/LCK..%s", dir, cp);
/* destroy the copy */
free(cp);
return 0;
}
int
uucp_lock(void)
{
int r, fd, pid;
char buf[16];
mode_t m;
if ( lockname[0] == '\0' ) return 0;
fd = open(lockname, O_RDONLY);
if ( fd >= 0 ) {
r = read(fd, buf, sizeof(buf));
close(fd);
/* if r == 4, lock file is binary (old-style) */
pid = (r == 4) ? *(int *)buf : strtol(buf, NULL, 10);
if ( pid > 0
&& kill((pid_t)pid, 0) < 0
&& errno == ESRCH ) {
/* stale lock file */
printf("Removing stale lock: %s\n", lockname);
sleep(1);
unlink(lockname);
} else {
lockname[0] = '\0';
errno = EEXIST;
return -1;
}
}
/* lock it */
m = umask(022);
fd = open(lockname, O_WRONLY|O_CREAT|O_EXCL, 0666);
if ( fd < 0 ) { lockname[0] = '\0'; return -1; }
umask(m);
snprintf(buf, sizeof(buf), "%04d\n", getpid());
write(fd, buf, strlen(buf));
close(fd);
return 0;
}
int
uucp_unlock(void)
{
if ( lockname[0] ) unlink(lockname);
return 0;
}
#endif /* of UUCP_LOCK_DIR */
/**********************************************************************/
ssize_t
writen_ni(int fd, const void *buff, size_t n)
{
size_t nl;
ssize_t nw;
const char *p;
p = buff;
nl = n;
while (nl > 0) {
do {
nw = write(fd, p, nl);
} while ( nw < 0 && errno == EINTR );
if ( nw <= 0 ) break;
nl -= nw;
p += nw;
}
return n - nl;
}
int
fd_printf (int fd, const char *format, ...)
{
char buf[256];
va_list args;
int len;
va_start(args, format);
len = vsnprintf(buf, sizeof(buf), format, args);
buf[sizeof(buf) - 1] = '\0';
va_end(args);
return writen_ni(fd, buf, len);
}
void
fatal (const char *format, ...)
{
char *s, buf[256];
va_list args;
int len;
term_reset(STO);
term_reset(STI);
va_start(args, format);
len = vsnprintf(buf, sizeof(buf), format, args);
buf[sizeof(buf) - 1] = '\0';
va_end(args);
s = "\r\nFATAL: ";
writen_ni(STO, s, strlen(s));
writen_ni(STO, buf, len);
s = "\r\n";
writen_ni(STO, s, strlen(s));
/* wait a bit for output to drain */
sleep(1);
#ifdef UUCP_LOCK_DIR
uucp_unlock();
#endif
exit(EXIT_FAILURE);
}
#define cput(fd, c) do { int cl = c; write((fd), &(cl), 1); } while(0)
int
fd_readline (int fdi, int fdo, char *b, int bsz)
{
int r;
unsigned char c;
unsigned char *bp, *bpe;
bp = (unsigned char*)b;
bpe = (unsigned char*)b + bsz - 1;
while (1) {
r = read(fdi, &c, 1);
if ( r <= 0 ) { r--; goto out; }
switch (c) {
case '\b':
if ( bp > (unsigned char *)b ) {
bp--;
cput(fdo, c); cput(fdo, ' '); cput(fdo, c);
} else {
cput(fdo, '\x07');
}
break;
case '\r':
*bp = '\0';
r = bp - (unsigned char *)b;
goto out;
default:
if ( bp < bpe ) { *bp++ = c; cput(fdo, c); }
else { cput(fdo, '\x07'); }
break;
}
}
out:
return r;
}
#undef cput
/**********************************************************************/
int
baud_up (int baud)
{
if ( baud < 300 )
baud = 300;
else if ( baud == 38400 )
baud = 57600;
else
baud = baud * 2;
if ( baud > 115200 )
baud = 115200;
return baud;
}
int
baud_down (int baud)
{
if ( baud > 115200 )
baud = 115200;
else if ( baud == 57600 )
baud = 38400;
else
baud = baud / 2;
if ( baud < 300)
baud = 300;
return baud;
}
int
flow_next (int flow, char **flow_str)
{
switch(flow) {
case FC_NONE:
flow = FC_RTSCTS;
*flow_str = "RTS/CTS";
break;
case FC_RTSCTS:
flow = FC_XONXOFF;
*flow_str = "xon/xoff";
break;
case FC_XONXOFF:
flow = FC_NONE;
*flow_str = "none";
break;
default:
flow = FC_NONE;
*flow_str = "none";
break;
}
return flow;
}
int
parity_next (int parity, char **parity_str)
{
switch(parity) {
case P_NONE:
parity = P_EVEN;
*parity_str = "even";
break;
case P_EVEN:
parity = P_ODD;
*parity_str = "odd";
break;
case P_ODD:
parity = P_NONE;
*parity_str = "none";
break;
default:
parity = P_NONE;
*parity_str = "none";
break;
}
return parity;
}
int
bits_next (int bits)
{
bits++;
if (bits > 8) bits = 5;
return bits;
}
/**********************************************************************/
void
child_empty_handler (int signum)
{
}
void
establish_child_signal_handlers (void)
{
struct sigaction empty_action;
/* Set up the structure to specify the "empty" action. */
empty_action.sa_handler = child_empty_handler;
sigemptyset (&empty_action.sa_mask);
empty_action.sa_flags = 0;
sigaction (SIGINT, &empty_action, NULL);
sigaction (SIGTERM, &empty_action, NULL);
}
int
run_cmd(int fd, ...)
{
pid_t pid;
sigset_t sigm, sigm_old;
/* block signals, let child establish its own handlers */
sigemptyset(&sigm);
sigaddset(&sigm, SIGTERM);
sigprocmask(SIG_BLOCK, &sigm, &sigm_old);
pid = fork();
if ( pid < 0 ) {
sigprocmask(SIG_SETMASK, &sigm_old, NULL);
fd_printf(STO, "*** cannot fork: %s\n", strerror(errno));
return -1;
} else if ( pid ) {
/* father: picocom */
int r;
/* reset the mask */
sigprocmask(SIG_SETMASK, &sigm_old, NULL);
/* wait for child to finish */
waitpid(pid, &r, 0);
/* reset terminal (back to raw mode) */
term_apply(STI);
/* check and report child return status */
if ( WIFEXITED(r) ) {
fd_printf(STO, "\r\n*** exit status: %d\r\n",
WEXITSTATUS(r));
return WEXITSTATUS(r);
} else {
fd_printf(STO, "\r\n*** abnormal termination: 0x%x\r\n", r);
return -1;
}
} else {
/* child: external program */
int r;
long fl;
char cmd[512];
establish_child_signal_handlers();
sigprocmask(SIG_SETMASK, &sigm_old, NULL);
/* unmanage terminal, and reset it to canonical mode */
term_remove(STI);
/* unmanage serial port fd, without reset */
term_erase(fd);
/* set serial port fd to blocking mode */
fl = fcntl(fd, F_GETFL);
fl &= ~O_NONBLOCK;
fcntl(fd, F_SETFL, fl);
/* connect stdin and stdout to serial port */
close(STI);
close(STO);
dup2(fd, STI);
dup2(fd, STO);
{
/* build command-line */
char *c, *ce;
const char *s;
int n;
va_list vls;
c = cmd;
ce = cmd + sizeof(cmd) - 1;
va_start(vls, fd);
while ( (s = va_arg(vls, const char *)) ) {
n = strlen(s);
if ( c + n + 1 >= ce ) break;
memcpy(c, s, n); c += n;
*c++ = ' ';
}
va_end(vls);
*c = '\0';
}
/* run extenral command */
fd_printf(STDERR_FILENO, "%s\n", cmd);
r = system(cmd);
if ( WIFEXITED(r) ) exit(WEXITSTATUS(r));
else exit(128);
}
}
/**********************************************************************/
#define TTY_Q_SZ 256
struct tty_q {
int len;
unsigned char buff[TTY_Q_SZ];
} tty_q;
/**********************************************************************/
#define TTY_TIME_RESET 2
#define TTY_TIME_DISPLAY 1
#define TTY_TIME_NONE 0
int tty_time = TTY_TIME_RESET;
int tty_time_enable = 0;
void
loop(void)
{
enum {
ST_COMMAND,
ST_TRANSPARENT
} state;
int dtr_up;
fd_set rdset, wrset;
int newbaud, newflow, newparity, newbits;
char *newflow_str, *newparity_str;
char fname[128];
int r, n;
unsigned char c;
struct timeval tv,tv_ref;
unsigned int diff_sec,diff_msec;
char s[32];
tty_q.len = 0;
state = ST_TRANSPARENT;
dtr_up = 0;
for (;;) {
FD_ZERO(&rdset);
FD_ZERO(&wrset);
FD_SET(STI, &rdset);
FD_SET(tty_fd, &rdset);
if ( tty_q.len ) FD_SET(tty_fd, &wrset);
if (select(FD_SETSIZE, &rdset, &wrset, NULL, NULL) < 0)
fatal("select failed: %d : %s", errno, strerror(errno));
if ( FD_ISSET(STI, &rdset) ) {
/* read from terminal */
do {
n = read(STI, &c, 1);
} while (n < 0 && errno == EINTR);
if (n == 0)
fatal("stdin closed");
else if (n < 0)
fatal("read from stdin failed: %s", strerror(errno));
switch (state) {
case ST_COMMAND:
if ( c == opts.escape ) {
state = ST_TRANSPARENT;
/* pass the escape character down */
if (tty_q.len <= TTY_Q_SZ)
tty_q.buff[tty_q.len++] = c;
else
fd_printf(STO, "\x07");
break;
}
state = ST_TRANSPARENT;
switch (c) {
case KEY_EXIT:
return;
case KEY_QUIT:
term_set_hupcl(tty_fd, 0);
term_flush(tty_fd);
term_apply(tty_fd);
term_erase(tty_fd);
return;
case KEY_STATUS:
fd_printf(STO, "\r\n");
fd_printf(STO, "*** baud: %d\r\n", opts.baud);
fd_printf(STO, "*** flow: %s\r\n", opts.flow_str);
fd_printf(STO, "*** parity: %s\r\n", opts.parity_str);
fd_printf(STO, "*** databits: %d\r\n", opts.databits);
fd_printf(STO, "*** dtr: %s\r\n", dtr_up ? "up" : "down");
fd_printf(STO, "*** timestamp: %s\r\n", tty_time_enable ? "on" : "off");
break;
case KEY_PULSE:
fd_printf(STO, "\r\n*** pulse DTR ***\r\n");
if ( term_pulse_dtr(tty_fd) < 0 )
fd_printf(STO, "*** FAILED\r\n");
break;
case KEY_TOGGLE:
if ( dtr_up )
r = term_lower_dtr(tty_fd);
else
r = term_raise_dtr(tty_fd);
if ( r >= 0 ) dtr_up = ! dtr_up;
fd_printf(STO, "\r\n*** DTR: %s ***\r\n",
dtr_up ? "up" : "down");
break;
case KEY_BAUD_UP:
newbaud = baud_up(opts.baud);
term_set_baudrate(tty_fd, newbaud);
tty_q.len = 0; term_flush(tty_fd);
if ( term_apply(tty_fd) >= 0 ) opts.baud = newbaud;
fd_printf(STO, "\r\n*** baud: %d ***\r\n", opts.baud);
break;
case KEY_BAUD_DN:
newbaud = baud_down(opts.baud);
term_set_baudrate(tty_fd, newbaud);
tty_q.len = 0; term_flush(tty_fd);
if ( term_apply(tty_fd) >= 0 ) opts.baud = newbaud;
fd_printf(STO, "\r\n*** baud: %d ***\r\n", opts.baud);
break;
case KEY_FLOW:
newflow = flow_next(opts.flow, &newflow_str);
term_set_flowcntrl(tty_fd, newflow);
tty_q.len = 0; term_flush(tty_fd);
if ( term_apply(tty_fd) >= 0 ) {
opts.flow = newflow;
opts.flow_str = newflow_str;
}
fd_printf(STO, "\r\n*** flow: %s ***\r\n", opts.flow_str);
break;
case KEY_PARITY:
newparity = parity_next(opts.parity, &newparity_str);
term_set_parity(tty_fd, newparity);
tty_q.len = 0; term_flush(tty_fd);
if ( term_apply(tty_fd) >= 0 ) {
opts.parity = newparity;
opts.parity_str = newparity_str;
}
fd_printf(STO, "\r\n*** parity: %s ***\r\n",
opts.parity_str);
break;
case KEY_BITS:
newbits = bits_next(opts.databits);
term_set_databits(tty_fd, newbits);
tty_q.len = 0; term_flush(tty_fd);
if ( term_apply(tty_fd) >= 0 ) opts.databits = newbits;
fd_printf(STO, "\r\n*** databits: %d ***\r\n",
opts.databits);
break;
case KEY_SEND:
fd_printf(STO, "\r\n*** file: ");
r = fd_readline(STI, STO, fname, sizeof(fname));
fd_printf(STO, "\r\n");
if ( r < -1 && errno == EINTR ) break;
if ( r <= -1 )
fatal("cannot read filename: %s", strerror(errno));
run_cmd(tty_fd, opts.send_cmd, fname, NULL);
break;
case KEY_RECEIVE:
fd_printf(STO, "*** file: ");
r = fd_readline(STI, STO, fname, sizeof(fname));
fd_printf(STO, "\r\n");
if ( r < -1 && errno == EINTR ) break;
if ( r <= -1 )
fatal("cannot read filename: %s", strerror(errno));
if ( fname[0] )
run_cmd(tty_fd, opts.send_cmd, fname, NULL);
else
run_cmd(tty_fd, opts.receive_cmd, NULL);
break;
case KEY_BREAK:
term_break(tty_fd);
fd_printf(STO, "\r\n*** break sent ***\r\n");
break;
case KEY_TIMESTAMP:
if(tty_time_enable) {
tty_time_enable = 0;
fd_printf(STO, "\r\n*** Time Stamp Disable ***\r\n");
} else {
tty_time_enable = 1;
tty_time = TTY_TIME_RESET;
fd_printf(STO, "\r\n*** Time Stamp Enable ***\r\n");
}
break;
default:
break;
}
break;
case ST_TRANSPARENT:
if ( c == opts.escape ) {
state = ST_COMMAND;
} else {
if (tty_q.len <= TTY_Q_SZ)
tty_q.buff[tty_q.len++] = c;
else
fd_printf(STO, "\x07");
}
break;
default:
assert(0);
break;
}
}
if ( FD_ISSET(tty_fd, &rdset) ) {
/* read from port */
do {
n = read(tty_fd, &c, 1);
} while (n < 0 && errno == EINTR);
if (n == 0)
fatal("term closed");
else if ( n < 0 )
fatal("read from term failed: %s", strerror(errno));
if(tty_time_enable && tty_time) {
gettimeofday(&tv,NULL);
if(tty_time == TTY_TIME_RESET) {
tv_ref = tv;
}
if((c != '\n') && (c != '\r')) {
diff_sec = tv.tv_sec - tv_ref.tv_sec;
if(tv.tv_usec/1000 < tv_ref.tv_usec/1000)
{
diff_sec--;
diff_msec = (1000 + (tv.tv_usec/1000)) - (tv_ref.tv_usec/1000);
}
else
{
diff_msec = (tv.tv_usec - tv_ref.tv_usec) / 1000;
}
sprintf(s,"\x1B[36m%d:%02d.%03d \x1B[0m",diff_sec/60,diff_sec%60,diff_msec);
//sprintf(s,"%3d.%03d ",diff_sec%1000,diff_msec);
//sprintf(s,"%03d.%04d",(int)(tv.tv_sec-tty_timeref),(int)(tv.tv_usec/1000));
write(STO, s, strlen(s));
tty_time = TTY_TIME_NONE;
}
}
if((c == '\n') || (c == '\r')) tty_time = TTY_TIME_DISPLAY;
do {
n = write(STO, &c, 1);
} while ( errno == EAGAIN
|| errno == EWOULDBLOCK
|| errno == EINTR );
if ( n <= 0 )
fatal("write to stdout failed: %s", strerror(errno));
}
if ( FD_ISSET(tty_fd, &wrset) ) {
/* write to port */
do {
n = write(tty_fd, tty_q.buff, tty_q.len);
} while ( n < 0 && errno == EINTR );
if ( n <= 0 )
fatal("write to term failed: %s", strerror(errno));
memcpy(tty_q.buff, tty_q.buff + n, tty_q.len - n);
tty_q.len -= n;
}
}
}
/**********************************************************************/
void
deadly_handler(int signum)
{
kill(0, SIGTERM);
sleep(1);
#ifdef UUCP_LOCK_DIR
uucp_unlock();
#endif
exit(EXIT_FAILURE);
}
void
establish_signal_handlers (void)
{
struct sigaction exit_action, ign_action;
/* Set up the structure to specify the exit action. */
exit_action.sa_handler = deadly_handler;
sigemptyset (&exit_action.sa_mask);
exit_action.sa_flags = 0;
/* Set up the structure to specify the ignore action. */
ign_action.sa_handler = SIG_IGN;
sigemptyset (&ign_action.sa_mask);
ign_action.sa_flags = 0;
sigaction (SIGTERM, &exit_action, NULL);
sigaction (SIGINT, &ign_action, NULL);
sigaction (SIGHUP, &ign_action, NULL);
sigaction (SIGALRM, &ign_action, NULL);
sigaction (SIGUSR1, &ign_action, NULL);
sigaction (SIGUSR2, &ign_action, NULL);
sigaction (SIGPIPE, &ign_action, NULL);
}
/**********************************************************************/
void
show_usage(char *name)
{
char *s;
s = strrchr(name, '/');
s = s ? s+1 : name;
printf("picocom v%s\n", VERSION_STR);
printf("Usage is: %s [options] <tty device>\n", s);
printf("Options are:\n");
printf(" --<b>aud <baudrate>\n");
printf(" --<f>low s (=soft) | h (=hard) | n (=none)\n");
printf(" --<p>arity o (=odd) | e (=even) | n (=none)\n");
printf(" --<d>atabits 5 | 6 | 7 | 8\n");
printf(" --<e>scape <char>\n");
printf(" --no<i>nit\n");
printf(" --no<r>eset\n");
printf(" --no<l>ock\n");
printf(" --<s>end-cmd <command>\n");
printf(" --recei<v>e-cmd <command>\n");
printf(" --<t>imestamp\n");
printf(" --<h>elp\n");
printf("<?> indicates the equivalent short option.\n");
printf("Short options are prefixed by \"-\" instead of by \"--\".\n");
}
/**********************************************************************/
void
parse_args(int argc, char *argv[])
{
static struct option longOptions[] =
{
{"receive-cmd", required_argument, 0, 'v'},
{"send-cmd", required_argument, 0, 's'},
{"escape", required_argument, 0, 'e'},
{"noinit", no_argument, 0, 'i'},
{"noreset", no_argument, 0, 'r'},
{"nolock", no_argument, 0, 'l'},
{"flow", required_argument, 0, 'f'},
{"baud", required_argument, 0, 'b'},
{"parity", required_argument, 0, 'p'},
{"databits", required_argument, 0, 'd'},
{"help", no_argument, 0, 'h'},
{"timestamp", no_argument, 0, 't'},
{0, 0, 0, 0}
};
while (1) {
int optionIndex = 0;
int c;
/* no default error messages printed. */
opterr = 0;
c = getopt_long(argc, argv, "hirlts:r:e:f:b:p:d:",
longOptions, &optionIndex);
if (c < 0)
break;
switch (c) {
case 't':
tty_time_enable = 1;
tty_time = TTY_TIME_RESET;
break;
case 's':
strncpy(opts.send_cmd, optarg, sizeof(opts.send_cmd));
opts.send_cmd[sizeof(opts.send_cmd) - 1] = '\0';
break;
case 'v':
strncpy(opts.receive_cmd, optarg, sizeof(opts.receive_cmd));
opts.receive_cmd[sizeof(opts.receive_cmd) - 1] = '\0';
break;
case 'i':
opts.noinit = 1;
break;
case 'r':
opts.noreset = 1;
break;
case 'l':
opts.nolock = 1;
break;
case 'e':
if ( isupper(optarg[0]) )
opts.escape = optarg[0] - 'A' + 1;
else
opts.escape = optarg[0] - 'a' + 1;
break;
case 'f':
switch (optarg[0]) {
case 'X':
case 'x':
opts.flow_str = "xon/xoff";
opts.flow = FC_XONXOFF;
break;
case 'H':
case 'h':
opts.flow_str = "RTS/CTS";
opts.flow = FC_RTSCTS;
break;
case 'N':
case 'n':
opts.flow_str = "none";
opts.flow = FC_NONE;
break;
default:
fprintf(stderr, "--flow '%c' ignored.\n", optarg[0]);
fprintf(stderr, "--flow can be one off: 'x', 'h', or 'n'\n");
break;
}
break;
case 'b':
opts.baud = atoi(optarg);
break;
case 'p':
switch (optarg[0]) {
case 'e':
opts.parity_str = "even";
opts.parity = P_EVEN;
break;
case 'o':
opts.parity_str = "odd";
opts.parity = P_ODD;
break;
case 'n':
opts.parity_str = "none";
opts.parity = P_NONE;
break;
default:
fprintf(stderr, "--parity '%c' ignored.\n", optarg[0]);
fprintf(stderr, "--parity can be one off: 'o', 'e', or 'n'\n");
break;
}
break;
case 'd':
switch (optarg[0]) {
case '5':
opts.databits = 5;
break;
case '6':
opts.databits = 6;
break;
case '7':
opts.databits = 7;
break;
case '8':
opts.databits = 8;
break;
default:
fprintf(stderr, "--databits '%c' ignored.\n", optarg[0]);
fprintf(stderr, "--databits can be one off: 5, 6, 7 or 8\n");
break;
}
break;
case 'h':
show_usage(argv[0]);
exit(EXIT_SUCCESS);
case '?':
default:
fprintf(stderr, "Unrecognized option.\n");
fprintf(stderr, "Run with '--help'.\n");
exit(EXIT_FAILURE);
}
} /* while */
if ( (argc - optind) < 1) {
fprintf(stderr, "No port given\n");
exit(EXIT_FAILURE);
}
strncpy(opts.port, argv[optind], sizeof(opts.port) - 1);
opts.port[sizeof(opts.port) - 1] = '\0';
printf("picocom v%s\n", VERSION_STR);
printf("\n");
printf("port is : %s\n", opts.port);
printf("flowcontrol : %s\n", opts.flow_str);
printf("baudrate is : %d\n", opts.baud);
printf("parity is : %s\n", opts.parity_str);
printf("databits are : %d\n", opts.databits);
printf("escape is : C-%c\n", 'a' + opts.escape - 1);
printf("noinit is : %s\n", opts.noinit ? "yes" : "no");
printf("noreset is : %s\n", opts.noreset ? "yes" : "no");
printf("nolock is : %s\n", opts.nolock ? "yes" : "no");
printf("send_cmd is : %s\n", opts.send_cmd);
printf("receive_cmd is : %s\n", opts.receive_cmd);
printf("\n");
}
/**********************************************************************/
int
main(int argc, char *argv[])
{
int r;
parse_args(argc, argv);