How to set non standurd baud rate on MPC5200 UART.

[Syamala Venugopal Reddy]

tried to set non standard baud rate using tty calls.

Code snipped as fallows.

 

baudrate=5;

ret=ioctl(fd, TIOCGSERIAL, &serial_info);

if(ret!=0)

{

   perror("custom baud rate get");

}

serial_info.flags &= ~ASYNC_SPD_MASK;

serial_info.flags |= ASYNC_SPD_CUST;

 

serial_info.custom_divisor=serial_info.baud_base / baudrate;

ret=ioctl(fd, TIOCSSERIAL,&serial_info);

if(ret!=0)

{

        perror("custom baud rate set:");

}

 

This code compiles well but gives error as

"Custom baud rate set: invalid argument" in run time.

 

 

 

 

Is there any thing wrong in this code?

 

Any one worked on MPC52XX, PSC controller provided by Freescale?

 

Does this serial driver (mpc52xx) supports custom baud rates?

 

Even the following code also giving me the same error. (This will just get
the options and set the same options with out modifying)

 

ret=ioctl(fd, TIOCGSERIAL, &serial_info);

ret=ioctl(fd, TIOCSSERIAL,&serial_info);

 

 

Thanks and Regards, 

Venu , 

 



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