/*
Copyright (C) Magna Carta Software, Inc. 1990, 1991.  All Rights Reserved.
C COMMUNICATIONS TOOLKIT
CPUT.C -- Send a byte out of a port.
*/


#include <ccttype.h>


/*
C_PUTC_ -- send a byte out of the designated serial port.
Note: Under polling,  the UART status register is read. Under interrupts, the
transmit buffer free space is read. This is blocking I/O. To avoid a block,
call c_txcount() to find transmit free space before sending.
*/
short c_putc_(COMM_PORT *p, short c)
{
    while ((*p->txstat)(p) == 0);
    return ((*p->c_write)(p, c));
}