timer.h

以ST公司CPU为核心的彩色电视机的完整源程序。

/*********************** SGS-THOMSON MICROELECTRONICS ************************
FILENAME     : TIMER.H
VERSION      : V1.0
DATE         : JAN 1999
AUTHOR(s)    : ASHISH RUDOLA / DEEPAK DOSHI
PROCESSOR    : ST92195
DESCRIPTION  : This module contains constant definitions and function
	       prototypes.
MODIFICATIONS:
   -
*****************************************************************************/
#ifndef _timerhead_
#define _timerhead_

//void init_slice_timer(void);
void init_STDT01(void);
void slice_timer_it(void);
void update_fast_timers(void);
void update_slow_timers(void);
unsigned char check_time(unsigned char);

register volatile unsigned int ST_R asm("RR240");

extern unsigned char slow_timers[];                                     /* Slow timers */
	#define STATUS_TIMER ((unsigned char)0)                 /* Status display time-out */
/*      #define MENU_FLASH_TIMER ((unsigned char)1)     */      /* Menu display time-out */
	#define COMMERCIAL_TIMER ((unsigned char)2)     /* Commercial display time-out */
	#define DIGIT_TIMER ((unsigned char)3)                  /* DIGIT KEY TENS->FIRST DEFINE */

extern unsigned char fast_timers[];                                     /* Fast timers */
	#define COMMAND_TIMER   ((unsigned char)0)              /* Key debounce timer */
	#define KEYBOARD_TIMER  ((unsigned char)1)              /* Scanning rate */
	#define IR_TIMER                ((unsigned char)2)              /* Scanning rate */
	#define CLOCK_TIMER     ((unsigned char)3)              /* Clock timer */
	#define POWER_TIMER     ((unsigned char)4)              /* Power state time-out */
	#define TUNING_AV_TIMER    ((unsigned char)5)              /* Tuning state time-out */
    #define I2CERRORTIMER       ((unsigned char)6)      /* feman add for I2C */  
/*    #define IR_TX_TIMER ((unsigned char)6) */
    #define AFC_TIMER ((unsigned char)7)

    #define AUTOSRCH_TIMER      ((unsigned char)7)      /* Fading timer */
    

#define NUMBER_OF_SLOW_TIMERS 4    /* Number of software timers */
#define NUMBER_OF_FAST_TIMERS 8    /* Number of software timers */ 

#define MS_PER_INTERRUPT        20        /* Timer interrupt every 20ms */
#define US_PER_INTERRUPT        20000     /* Timer interrupt every 20000us */
//#define US_PER_EVENT            8         /* Microcseconds per timer event: (10MHz/4)/20 */
					 /* Value chenged from 5 to 8 for 10MHz operation */

#define CHECK_SECOND            0         /* Check second timer */
#define CHECK_MINUTE            1         /* Check minute timer */
#define CHECK_HALF_SECOND       2         /* Check second timer */

/*#define MENU_TIME_OUT         240      */  /* Menu time_out (seconds) */
#define STATUS_TIME_OUT         5         /* Status time-out (seconds) */
#define STATUS_TIME_OUT_1       5         /* NICAM Status time-out (seconds) */
#define VOLUME_TIME_OUT         5         /* Volume time-out (seconds) */
#define COMMERCIAL_TIME_OUT     5      /* commercial time out (second */
#define DIGIT_TIME_OUT          5                 /* dight time-out (seconds)   */

#endif