top10_fixcyc.c

来自「瑞萨CAN通讯单片机程序」· C语言 代码 · 共 92 行

/*""FILE COMMENT""*****************************************************
 *	M32R C Programming		Rev. 1.00
 *		< Sample Program for TOP10 continuous output(fixed cycle) mode >
 *
 *	Copyright (c) 2003 Renesas Technology Corporation
 *			   And Renesas Solutions Corporation
 *			   All Rights Reserved
 *********************************************************************/

/************************************************************************/
/*		Include file						*/
/************************************************************************/

#include		"..\inc\sfr32170_pragma.h"

/************************************************************************/
/*		Function prototype declaration				*/
/************************************************************************/

	void		TOP10_FixCyc_init(void);	/* Set TOP10 continuous output mode (fixed cycle interrupt) */
	void		TOP10_FixCycInt(void);			/* Process fixed cycle interrupt (user processing) */

/************************************************************************/
/*		Define macro						*/
/************************************************************************/

/*** Continuous output : Fixed cycle(TOP10) ***/

							/* 0123 4567 89AB CDEF	*/
#define	TOP10_MASK		(unsigned short)0x3013	/* 0011 0000 0001 0011B	*/
#define	TOP10_CntOutput		(unsigned short)0x2010	/* 0010 0000 0001 0000B	*/
							/*   || 	|   ++- Select clock bus 0		*/
							/*   || 	+------ Select enable source		*/
							/*   ++---------------- TOP10 continuous output mode	*/

#define	TOP10_ILevel		(unsigned char)0	/* MJT output interrupt 5 (TOP10) interrupt priority level */

#define	TOP10_Cycle		(unsigned short)5000 - 1	/* TOP10 interrupt cycle */

/*""FUNC COMMENT""*******************************************************
 * Function name: TOP10_FixCyc_init()
 *-----------------------------------------------------------------------
 * Description	: TOP10 interrupt cycleInitial settings necessary to generate an interrupt at fixed intervals while
 *		: driving TOP10 in continuous output mode
 * 		: - While driving TOP10 in continuous output mode, this function generates an interrupt at fixed
 *		:   intervals
 * 		: - No signals are output from TO10
 * 		: - The count source used for this operation is clock bus 0
 *-----------------------------------------------------------------------
 * Argument	: -
 *-----------------------------------------------------------------------
 * Returns	: -
 *-----------------------------------------------------------------------
 * Notes	: The prescaler, clock bus, etc. are set separately from the above
 * 		: Must be executed while interrupts are disabled
 *""FUNC COMMENT END""***************************************************/
void	TOP10_FixCyc_init()
{
/*** Disabling TOP10 (TO10) output ***/

	P10MOD &= ~0x20;		/* Disable TOP10 (TO10 output) against output .. Select port P102 output */

/*** Setting continuous output mode (TOP10) ***/

	IMJTOCR5 = TOP10_ILevel;		/* Set MJT output interrupt 5 (TOP10) interrupt priority level */

	TOP810CR = ( TOP810CR & ~TOP10_MASK) | TOP10_CntOutput;	/* Set TOP10 continuous output mode */

	TOP10CT = TOP10_Cycle;					/* Set initial value in TOP10 counter */
	TOP10RL = TOP10_Cycle;					/* Set initial value in TOP10 reload register */

	TOPPRO &= ~TOP10PRO;					/* Enable TOP10 enable protect */
	TOPCEN = 0xffff;					/* Enable TOP10 count */
}

#if 0
/*""FUNC COMMENT""*******************************************************
 * Function name: TOP10_FixCycInt()
 *-----------------------------------------------------------------------
 * Description	: Fixed cycle interrupt processing
 *-----------------------------------------------------------------------
 * Argument	: -
 *-----------------------------------------------------------------------
 * Returns	: -
 *-----------------------------------------------------------------------
 * Notes	: -
 *""FUNC COMMENT END""***************************************************/
void	TOP10_FixCycInt()
{
}
#endif