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Convert baud rates into appropriate constant values, report any failures

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This commit is contained in:
Jeremy Lakeman 2013-06-24 16:11:20 +09:30
parent 9550dbce9d
commit 944f718ff7
1 changed files with 34 additions and 4 deletions
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38
overlay_packetradio.c
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@ -6,9 +6,38 @@ int overlay_packetradio_setup_port(overlay_interface *interface)
{
struct termios t;
tcgetattr(interface->alarm.poll.fd, &t);
cfsetospeed(&t, interface->uartbps);
cfsetispeed(&t, interface->uartbps);
if (tcgetattr(interface->alarm.poll.fd, &t))
WHY_perror("Failed to get terminal parameters");
speed_t baud_rate;
switch(interface->uartbps){
case 0: baud_rate = B0; break;
case 50: baud_rate = B50; break;
case 75: baud_rate = B75; break;
case 110: baud_rate = B110; break;
case 134: baud_rate = B134; break;
case 150: baud_rate = B150; break;
case 200: baud_rate = B200; break;
case 300: baud_rate = B300; break;
case 600: baud_rate = B600; break;
case 1200: baud_rate = B1200; break;
case 1800: baud_rate = B1800; break;
case 2400: baud_rate = B2400; break;
case 4800: baud_rate = B4800; break;
case 9600: baud_rate = B9600; break;
case 19200: baud_rate = B19200; break;
case 38400: baud_rate = B38400; break;
default:
case 57600: baud_rate = B57600; break;
#ifdef B11520
case 115200: baud_rate = B11520; break;
#endif
case 230400: baud_rate = B230400; break;
}
if (cfsetospeed(&t, baud_rate))
WHY_perror("Failed to set output baud rate");
if (cfsetispeed(&t, baud_rate))
WHY_perror("Failed to set input baud rate");
// 8N1
t.c_cflag &= ~PARENB;
@ -38,7 +67,8 @@ int overlay_packetradio_setup_port(overlay_interface *interface)
// no output processing
t.c_oflag &= ~OPOST;
tcsetattr(interface->alarm.poll.fd, TCSANOW, &t);
if (tcsetattr(interface->alarm.poll.fd, TCSANOW, &t))
WHY_perror("Failed to set terminal parameters");
// Ask radio to report RSSI
(void)write_all(interface->alarm.poll.fd,"\r",1);