Advantech ADAM-5511 Manual page 189

com_232_clear_break
com_232_set_break
Syntax:
void com_232_clear_break(void)
void com_232_set_break(void)
Description:
Sets 232 port to clear BREAK signal.
Sets 232 port to send BREAK signal.
Parameter Description
None.
Return value:
None.
Example:
None.
Remarks:
Please refer to the 16C550 UART register document (Appendix B).