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Submitted by Wim Lewis. 

Improve error handling.

patch #4923: Better error reporting for serial-bitbang programmers


git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@637 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
joerg_wunsch 2006-08-31 22:07:39 +00:00
parent 76e21b8509
commit 00b6640aa1
2 changed files with 52 additions and 11 deletions
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6
ChangeLog
View File

@ -1,3 +1,9 @@
2006-09-01 Joerg Wunsch <j@uriah.heep.sax.de>
Submitted by Wim Lewis.
* serbb_posix.c: Improve error handling.
patch #4923: Better error reporting for serial-bitbang programmers
2006-08-31 Joerg Wunsch <j@uriah.heep.sax.de>
* avrdude.conf.in: Introduce a "stk500v1" entry, so we

57
serbb_posix.c
View File

@ -74,6 +74,7 @@ static char *serpins[DB9PINS + 1] =
static int serbb_setpin(PROGRAMMER * pgm, int pin, int value)
{
unsigned int ctl;
int r;
if (pin & PIN_INVERSE)
{
@ -91,17 +92,29 @@ static int serbb_setpin(PROGRAMMER * pgm, int pin, int value)
switch ( pin )
{
case 3: /* txd */
ioctl(pgm->fd, value ? TIOCSBRK : TIOCCBRK, 0);
r = ioctl(pgm->fd, value ? TIOCSBRK : TIOCCBRK, 0);
if (r < 0) {
perror("ioctl(\"TIOCxBRK\")");
return -1;
}
return 0;
case 4: /* dtr */
case 7: /* rts */
ioctl(pgm->fd, TIOCMGET, &ctl);
r = ioctl(pgm->fd, TIOCMGET, &ctl);
if (r < 0) {
perror("ioctl(\"TIOCMGET\")");
return -1;
}
if ( value )
ctl |= serregbits[pin];
else
ctl &= ~(serregbits[pin]);
ioctl(pgm->fd, TIOCMSET, &ctl);
r = ioctl(pgm->fd, TIOCMSET, &ctl);
if (r < 0) {
perror("ioctl(\"TIOCMSET\")");
return -1;
}
return 0;
default: /* impossible */
@ -113,6 +126,7 @@ static int serbb_getpin(PROGRAMMER * pgm, int pin)
{
unsigned int ctl;
unsigned char invert;
int r;
if (pin & PIN_INVERSE)
{
@ -133,7 +147,11 @@ static int serbb_getpin(PROGRAMMER * pgm, int pin)
case 6: /* dsr */
case 8: /* cts */
case 9: /* ri */
ioctl(pgm->fd, TIOCMGET, &ctl);
r = ioctl(pgm->fd, TIOCMGET, &ctl);
if (r < 0) {
perror("ioctl(\"TIOCMGET\")");
return -1;
}
if ( !invert )
{
#ifdef DEBUG
@ -201,6 +219,7 @@ static int serbb_open(PROGRAMMER *pgm, char *port)
{
struct termios mode;
int flags;
int r;
bitbang_check_prerequisites(pgm);
@ -208,10 +227,17 @@ static int serbb_open(PROGRAMMER *pgm, char *port)
pgm->fd = open(port, O_RDWR | O_NOCTTY | O_NONBLOCK);
if (pgm->fd < 0)
if (pgm->fd < 0) {
perror(port);
return(-1);
}
tcgetattr(pgm->fd, &mode);
r = tcgetattr(pgm->fd, &mode);
if (r < 0) {
fprintf(stderr, "%s: ", port);
perror("tcgetattr");
return(-1);
}
oldmode = mode;
mode.c_iflag = IGNBRK | IGNPAR;
@ -220,19 +246,26 @@ static int serbb_open(PROGRAMMER *pgm, char *port)
mode.c_cc [VMIN] = 1;
mode.c_cc [VTIME] = 0;
tcsetattr(pgm->fd, TCSANOW, &mode);
r = tcsetattr(pgm->fd, TCSANOW, &mode);
if (r < 0) {
fprintf(stderr, "%s: ", port);
perror("tcsetattr");
return(-1);
}
/* Clear O_NONBLOCK flag. */
flags = fcntl(pgm->fd, F_GETFL, 0);
if (flags == -1)
{
fprintf(stderr, "%s: Can not get flags\n", progname);
fprintf(stderr, "%s: Can not get flags: %s\n",
progname, strerror(errno));
return(-1);
}
flags &= ~O_NONBLOCK;
if (fcntl(pgm->fd, F_SETFL, flags) == -1)
{
fprintf(stderr, "%s: Can not clear nonblock flag\n", progname);
fprintf(stderr, "%s: Can not clear nonblock flag: %s\n",
progname, strerror(errno));
return(-1);
}
@ -241,9 +274,11 @@ static int serbb_open(PROGRAMMER *pgm, char *port)
static void serbb_close(PROGRAMMER *pgm)
{
int r;
if (pgm->fd != -1)
{
tcsetattr(pgm->fd, TCSANOW, &oldmode);
{
(void)tcsetattr(pgm->fd, TCSANOW, &oldmode);
pgm->setpin(pgm, pgm->pinno[PIN_AVR_RESET], 1);
close(pgm->fd);
}