Return the input baud rate that's stored in a termios structure
#include <termios.h> speed_t cfgetispeed( const struct termios* termios_p );
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The cfgetispeed() function returns the input baud rate that's stored in the termios structure pointed to by termios_p.
You can get a valid termios control structure for an opened device by calling tcgetattr().
The input baud rate stored in *termios_p, or -1 if an error occurs (errno is set).
#include <termios.h> #include <fcntl.h> #include <unistd.h> #include <stdlib.h> #include <stdio.h> int main( void ) { int fd; struct termios termios_p; speed_t speed; fd = open( "/dev/ser1", O_RDWR ); tcgetattr( fd, &termios_p); /* * Get input baud rate */ speed = cfgetispeed( &termios_p); printf( "Input baud: %ld\n", speed ); close( fd ); return EXIT_SUCCESS; }
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | Yes |
Thread | Yes |