47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
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/* cmb-outbyte.c -- outbyte function for CMB1200 eval board.
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*
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* Copyright (c) 1999 Cygnus Support
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice is included verbatim in any distributions. No written agreement,
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* license, or royalty fee is required for any of the authorized uses.
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* Modifications to this software may be copyrighted by their authors
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* and need not follow the licensing terms described here, provided that
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* the new terms are clearly indicated on the first page of each file where
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* they apply.
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*/
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#include <_ansi.h>
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#define _TX 0x40
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#define _SR 0x86
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#define UART0_BASE 0x10009000
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#define UART1_BASE 0x1000a000
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#define UART_BASE UART0_BASE
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#define TXREG ((volatile unsigned short *)(UART_BASE + _TX))
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#define SRREG ((volatile unsigned short *)(UART_BASE + _SR))
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#define TRDY 0x2000
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#define GDB_QUOTE_CHAR 15 /* ^O */
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/*
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* outbyte -- send a byte to the UART.
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*/
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void
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_DEFUN (outbyte, (ch),
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char ch)
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{
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while (!(*SRREG & TRDY))
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;
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*TXREG = GDB_QUOTE_CHAR;
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while (!(*SRREG & TRDY))
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;
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*TXREG = (unsigned short)ch;
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}
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