autosrch.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     : AUTOSRCH.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 _autosrchhead_
#define _autosrchhead_

#include "tv_glob.h"

void init_autosearch(void);
void start_autosearch(void);
void stop_autoprog(void);
void stop_autosearch(void);
void set_pos_neg_modulation(void);
void update_autosearch(void);
void increment_VS(unsigned char);
void decrement_VS(unsigned char);
void next_system(void);
void next_band(void);
void previous_band(void);
void start_autoprog(void);

/*
Since an inverter has been set, the minimum value gives the maximum VS level
*/


#define VS_MAXIMUM 0x8000
#define VS_MINIMUM (VS_MAXIMUM | 0x3FFF)

/*
VS increments
*/
#define FAST_STEP_UHF   8       /* Maximum increment when no identification */
#define FAST_STEP_VHF   16      /* Maximum increment when no identification */
#define COARSE_STEP   10      /* Maximum increment when no identification */
#define MEDIUM_STEP	4 	/* Medium increment when identification */
#define SLOW_STEP	1 	/* Small increment when identification */


#endif