relocate_io.c

来自「Coldfire MCF5282 DBug bootloader」· C语言 代码 · 共 58 行

/*
 * File:		relocate_io.c
 * Purpose:		Common routines for relocatable input/output routines
 *
 * Notes:		
 *
 */

#include "src/include/dbug.h"
#include "proj/common/relocate_io.h"

/* 
 * Compiler specific code relocation section 
 */
#ifdef __DCC__
#pragma section CODE	".code_relocation"
#pragma section CONST	".code_relocation"
#endif

/********************************************************************/
#ifdef __MWERKS__
__relocate_code__
#endif
char
relocate_getchar (void)
{
	/* Wait until character has been received */
	while (!(MCF5282_UART0_USR & MCF5282_UART_USR_RXRDY))
		; 
	return MCF5282_UART0_URB;
}

/********************************************************************/
#ifdef __MWERKS__
__relocate_code__
#endif
void
relocate_putchar (char ch)
{
	/* Wait until space is available in the FIFO */
	while (!(MCF5282_UART0_USR & MCF5282_UART_USR_TXRDY))
		;
	/* Send the character */
	MCF5282_UART0_UTB = (uint8)ch;
}

/********************************************************************/
#ifdef __MWERKS__
__relocate_code__
#endif
int
relocate_getchar_present (void)
{
    return (MCF5282_UART0_USR & MCF5282_UART_USR_RXRDY);
}

/********************************************************************/