* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+/*
+ * At the time of writing, glibc does not support the Linux kernel interfaces
+ * for setting non-standard baud rates and flow control. We therefore have to
+ * prepare the correct ioctls ourselves, for which we need the declarations in
+ * linux/termios.h.
+ *
+ * We can't include linux/termios.h in serialport.c however, because its
+ * contents conflict with the termios.h provided by glibc. So this file exists
+ * to isolate the bits of code which use the kernel termios declarations.
+ *
+ * The details vary by architecture. Some architectures have c_ispeed/c_ospeed
+ * in struct termios, accessed with TCSETS/TCGETS. Others have these fields in
+ * struct termios2, accessed with TCSETS2/TCGETS2. Some architectures have the
+ * TCSETX/TCGETX ioctls used with struct termiox, others do not.
+ */
+
+#if defined(__linux__) && !defined(__ANDROID__)
+
#include <linux/termios.h>
#include "linux_termios.h"
return sizeof(struct termiox);
}
-int get_termiox_flow(void *data)
+int get_termiox_flow(void *data, int *rts, int *cts, int *dtr, int *dsr)
{
struct termiox *termx = (struct termiox *) data;
-
int flags = 0;
- if (termx->x_cflag & RTSXOFF)
- flags |= RTS_FLOW;
- if (termx->x_cflag & CTSXON)
- flags |= CTS_FLOW;
- if (termx->x_cflag & DTRXOFF)
- flags |= DTR_FLOW;
- if (termx->x_cflag & DSRXON)
- flags |= DSR_FLOW;
+
+ *rts = (termx->x_cflag & RTSXOFF);
+ *cts = (termx->x_cflag & CTSXON);
+ *dtr = (termx->x_cflag & DTRXOFF);
+ *dsr = (termx->x_cflag & DSRXON);
return flags;
}
-void set_termiox_flow(void *data, int flags)
+void set_termiox_flow(void *data, int rts, int cts, int dtr, int dsr)
{
struct termiox *termx = (struct termiox *) data;
termx->x_cflag &= ~(RTSXOFF | CTSXON | DTRXOFF | DSRXON);
- if (flags & RTS_FLOW)
+ if (rts)
termx->x_cflag |= RTSXOFF;
- if (flags & CTS_FLOW)
+ if (cts)
termx->x_cflag |= CTSXON;
- if (flags & DTR_FLOW)
+ if (dtr)
termx->x_cflag |= DTRXOFF;
- if (flags & DSR_FLOW)
+ if (dsr)
termx->x_cflag |= DSRXON;
}
#endif
+
+#endif