/* ads-io.h -- simple-minded I/O routines for Motorola MPC8xxADS board.
 * Prototypes for functions in ads-io.c
 *
 * Copyright (c) 1998 by Scott Howard.
 *
 * SMC2Init (), SMC2PutChar (), SMC2GetChar () and SMC2Poll () are adapted from
 * Motorola's demo program on their web site.  No copyright was defined in
 * the original source.
 *
 * The author hereby grants permission to use, copy, modify, distribute,
 * and license this software and its documentation for any purpose, provided
 * that existing copyright notices are retained in all copies and that this
 * notice is included verbatim in any distributions. No written agreement,
 * license, or royalty fee is required for any of the authorized uses.
 * Modifications to this software may be copyrighted by their authors
 * and need not follow the licensing terms described here, provided that
 * the new terms are clearly indicated on the first page of each file where
 * they apply.
 */


extern int SMC2InitDone;

/***************************************************
  * UART Initializtion Routine  
  *
  * Function: SMC2Init
  *         The SMC2 is initialized as a UART at 9600 Baud with 20MHZ CPU clock.
  *
  ***************************************************/

void SMC2Init(void);

/**************************************************
  * SMC2PutChar Routine  
  *    
  * Function: SMC2PutChar
  *         Output a character to SMC2
  *
  * Input:
  *        ch -- input character
  *
  **************************************************/

void SMC2PutChar(char ch);

/**************************************************
 * SMC2GetChar Routine  
 *
 * Function: SMC2GetChar
 *         Get a character from SMC2
 *
 * Return Value:
 *        character from SMC2
 *
 **************************************************/
 
char SMC2GetChar(void);

/**************************************************
 * SMC2Poll Routine  
 *
 * Function: SMC2Poll
 *          Poll the SMC2, returns true if a character available in the receive buffer.
 *
 * Return Value:
 *        Returns 1 if character available, else returns 0.
 *
 **************************************************/
 
int SMC2Poll(void);

/*
 * GetIMMR() returns the current value in IMMR register.
 */
unsigned long GetIMMR(void);