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Added a function to assert or clear a break condition.

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This commit is contained in:
Jef Driesen 2008-02-24 19:52:12 +00:00
parent 25d8fc0969
commit dea1ae1518
3 changed files with 40 additions and 1 deletions
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1
serial.h
View File

@ -68,6 +68,7 @@ int serial_drain (serial *device);
int serial_send_break (serial *device);
int serial_set_break (serial *device, int level);
int serial_set_dtr (serial *device, int level);
int serial_set_rts (serial *device, int level);

19
serial_posix.c
View File

@ -457,7 +457,7 @@ serial_read (serial* device, void* data, unsigned int size)
TRACE ("gettimeofday");
return -1;
}
timersub (&now, &timestamp ,&delta);
timersub (&now, &timestamp, &delta);
long elapsed = delta.tv_sec * 1000 + delta.tv_usec / 1000;
if (elapsed >= device->timeout)
timeout = 0;
@ -566,6 +566,23 @@ serial_send_break (serial *device)
}
int
serial_set_break (serial *device, int level)
{
if (device == NULL)
return -1; // EINVAL (Invalid argument)
int action = (level ? TIOCSBRK : TIOCCBRK);
if (ioctl (device->fd, action, NULL) != 0) {
TRACE ("ioctl");
return -1;
}
return 0;
}
static int
serial_set_status (int fd, int value, int level)
{

21
serial_win32.c
View File

@ -419,6 +419,27 @@ serial_send_break (serial* device)
}
int
serial_set_break (serial *device, int level)
{
if (device == NULL)
return -1; // ERROR_INVALID_PARAMETER (The parameter is incorrect)
if (level) {
if (!SetCommBreak (device->hFile)) {
TRACE ("SetCommBreak");
return -1;
}
} else {
if (!ClearCommBreak (device->hFile)) {
TRACE ("ClearCommBreak");
return -1;
}
}
return 0;
}
int
serial_set_dtr (serial* device, int level)
{