timer.h

i2s usb audio demo lpc2138

/*****************************************************************************
 *   timer.h:  Header file for NXP LPC23xx/24xx Family Microprocessors
 *
 *   Copyright(C) 2006, NXP Semiconductor
 *   All rights reserved.
 *
 *   History
 *   2006.07.13  ver 1.00    Prelimnary version, first Release
 *
******************************************************************************/
#ifndef __TIMER_H 
#define __TIMER_H

#define TIME_INTERVAL	Fpclk/100 - 1

#define TIM_MCR_INT (0x01<<0)	/* on match take interrupt */
#define TIM_MCR_RST (0x01<<1)	/* on match reset */
#define TIM_MCR_STP (0x01<<2)	/* on match stop */
#define TIM_CCR_RE (0x01<<0)	/* make Rising Edge active capture event */
#define TIM_CCR_FE (0x01<<1)	/* make Falling Edge active capture event */
#define TIM_CCR_INT (0x01<<2)	/* on capture event take interrupt */


#define TIM_EMC_NOTHING (0x00)	/* External Match Do Nothing  */
#define TIM_EMC_CLRB (0x01)    	/* External Match Clear Bit  */
#define TIM_EMC_SETB (0x02)	    /* External Match Set Bit  */
#define TIM_EMC_TOGGLE (0x03)	/* External Match Toggle Bit  */

#define TIM_MODE_TIMER (0x00)	    /* mode is Timer */
#define TIM_MODE_CNT_ON_RE (0x01)	/* mode is count on Rising Edge  */
#define TIM_MODE_CNT_ON_FE (0x02)	/* mode is count on  Falling Edge */
#define TIM_MODE_CNT_ON_BE (0x03)	/* mode is count on  Both Edges */
 
/* depending on the CCLK and PCLK setting, CCLK = 60Mhz, PCLK = 1/4 CCLK
10mSec = 150.000-1 counts */
// #define TIME_INTERVAL	149999		

extern DWORD init_timer( BYTE timer_num, DWORD timerInterval );
extern DWORD init_timer0 (DWORD timerInterval); 
extern DWORD init_timer1 (DWORD timerInterval); 
extern DWORD init_timer2 ( void ); 
extern DWORD setTimerMatchValue(DWORD timer,  DWORD match, DWORD timerInterval);
extern DWORD setTimerMatchControl(DWORD timer,  DWORD match,  DWORD control);
extern DWORD setTimerCounterMode(DWORD timer,  DWORD mode,  DWORD inputSelect);
extern DWORD setTimerExternalMatch(DWORD timer,  DWORD match, DWORD value,  DWORD matchControl);
extern DWORD clearTimerExternalMatch(DWORD timer, DWORD match);
extern DWORD setTimerPrescaleValue(DWORD timer, DWORD value);

extern void enable_timer( BYTE timer_num );
extern void disable_timer( BYTE timer_num );
extern void reset_timer( BYTE timer_num );

extern void Timer2_Handler (void) __irq;


#endif /* end __TIMER_H */
/*****************************************************************************
**                            End Of File
******************************************************************************/