📄 tft_7._c

📁 7"车载液晶电视机控制程序源码 WinRar3.2压缩 MCU ATMega8
💻 _C
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//ICC-AVR application builder : 2004-12-17 14:40:37
// Target : M8
// Crystal: 4.0000Mhz

#include <iom8v.h>
#include <macros.h>
#include "tft_7.h"

unsigned char fff=0;
unsigned int sync_time=0;
unsigned char v_black=0;
unsigned char jjj=0;
unsigned char iii=0;

void port_init(void)
{
 PORTB = 0x10;
 DDRB  = 0xee;
 PORTC = 0x00; //m103 output only
 DDRC  = 0xff;
 PORTD = 0x00;
 DDRD  = 0xff;
}

//TIMER0 initialisation - prescale:1024
// WGM: Normal
// desired value: 10mSec
// actual value:  9.984mSec (0.2%)
void timer0_init(void)
{
 TCCR0 = 0x00; //stop
 TCNT0 = 0xD9; //set count
 TCCR0 = 0x05; //start timer
}

#pragma interrupt_handler timer0_ovf_isr:10
void timer0_ovf_isr(void)
{
  unsigned char static count_led=0,count_key=0,count_key2=0,fk0=0;
  TCNT0 = 0xD9;
  
  if((++count_led)==50)
  {
    count_led=0;
	PORTC^=PLEDR;
	fff=1;
  }
  if(OSD_time!=0)
    OSD_time--;
  if(fkey==1)
  {
    if((++count_key)==50)
	  fk0=1;
  }
  else
  {
    count_key=0;
	count_key2=0;
	fcontinuous=0;
	fk0=0;
  }
  if(fk0==1)
  {
    if((++count_key2)==10)
	{
	  fcontinuous=1;
	  count_key2=0;
	}
  }
}

//TIMER1 initialisation - prescale:1
// WGM: 0) Normal, TOP=0xFFFF
// desired value: 100uSec
// actual value: 100.000uSec (0.0%)
void timer1_init(void)
{
 TCCR1B = 0x00; //stop
 TCNT1H = 0xFE; //setup
 TCNT1L = 0x70;
 OCR1AH = 0x01;
 OCR1AL = 0x90;
 OCR1BH = 0x01;
 OCR1BL = 0x90;
 ICR1H  = 0x01;
 ICR1L  = 0x90;
 TCCR1A = 0x00;
 TCCR1B = 0x01; //start Timer
}

#pragma interrupt_handler timer1_ovf_isr:9
void timer1_ovf_isr(void)
{
  unsigned char static count_adc=0;
 //TIMER1 has overflowed
 TCNT1H = 0xFE; //reload counter high value
 TCNT1L = 0x70; //reload counter low value
  
  if((++count_adc)==65)
    count_adc=0;
  if(count_adc<volume_register && (PIND&PTV)==0)  //音量
    PORTB|=PVOL;
  else
    PORTB&=~PVOL;
  if(count_adc<user_adjust[0][0])  //亮度
    PORTB|=PBRI;
  else
    PORTB&=~PBRI;
  if(count_adc<user_adjust[0][1])  //对比度
    PORTD&=~PCON;
  else
    PORTD|=PCON;
  if(count_adc<user_adjust[0][2])  //色饱和度
    PORTD|=PCOL;
  else
    PORTD&=~PCOL;
  if(count_adc<user_adjust[0][3])  //色调
    PORTB|=PHUE;
  else
    PORTB&=~PHUE;
  //同步计数
  v_sync_count++;
  if((PINB&VSYNC)==0)
  {
	if(v_sync_count>140)
	{
      v_black=1;
	  sync_time=v_sync_count;
	}
    v_sync_count=0;
  }
}

//TWI initialisation
// bit rate:2
void twi_init(void)
{
 TWCR= 0X00; //disable twi
 TWBR= 0x02; //set bit rate
 TWSR= 0x01; //set prescale
 TWAR= 0x02; //set slave address
 TWCR= 0x44; //enable twi
}

//call this routine to initialise all peripherals
void init_devices(void)
{
 //stop errant interrupts until set up
 CLI(); //disable all interrupts
 port_init();
 timer0_init();
 timer1_init();
 twi_init();

 MCUCR = 0x00;
 GICR  = 0x00;
 TIMSK = 0x05; //timer interrupt sources
 SEI(); //re-enable interrupts
 //all peripherals are now initialised
}

//
void main(void)
{
  struct cmenu{
  unsigned char item;
  unsigned char page;
  } menu={0,0},amount;
  unsigned int tmp;
  unsigned char command;
  unsigned char fback,natural;
  init_devices();
  power_on();
  while(1)
  {
    if(OSD_time==0)//关闭OSD
	{
	  OSD_off();
	  menu.item=0;
	  menu.page=0;
	  FOSD=0;
	}
	if(FOSD!=DIS_MENU1 && FOSD!=DIS_MENU2)//复位菜单指针
	{
	  menu.item=0;
	  menu.page=0;
	}
	if(user_config[video_input]==TV)
	{
	  amount.item=9;
	  amount.page=2;
	}
	else
	{
	  amount.item=6;
	  amount.page=1;
	}
    update_user_adjust();  //更新用户设置
	//收集命令
	if((command=key(6))==0xff)
	  command=key(7);
	if(command!=0xff)
	  OSD_time=OSD_TIME;
	//处理命令
	switch(command)
	{
	case KMENU:  //菜单键
	  if((++menu.page)>amount.page)
	  {
	    menu.page=0;
		OSD_time=0;
	  }
	  if(menu.page==1)
	    dis_menu(menu.item=1);
	  if(menu.page==2)
	    dis_menu(menu.item=7);
	  break;
	case KUP:    //频道加/菜单下
	  if(menu.page!=0)
	  {
	    if((++menu.item)>amount.item)
		  menu.item=1;
		if(menu.item>6)
		  menu.page=2;
		else
		  menu.page=1;
	    dis_menu(menu.item);
	  }
	  else if(user_config[video_input]==TV)
	  {
	    if(user_config[channel]<user_config[ch_max])
	    CHwrite(++user_config[channel]);
		dis_video(TV);
	  }
	  break;
	case KDOWN:    //频道减/菜单上
	  if(menu.page!=0)
	  {
	    if((--menu.item)==0)
		  menu.item=amount.item;
		if(menu.item>6)
		  menu.page=2;
		else
		  menu.page=1;
	    dis_menu(menu.item);
	  }
	  else if(user_config[video_input]==TV)
	  {
	    if(user_config[channel]>0)
	      CHwrite(--user_config[channel]);
		dis_video(TV);
	  }
	  break;
	case KLEFT:    //音量减/亮度减
	  if(menu.page!=0)
	  {
	    switch(menu.item)
		{
		case 1:
		case 2:
		case 3:
		case 4:
		  if(user_adjust[user_config[video_input]][menu.item-1]>0)
		    EEPROMwrite((user_config[video_input]-1)*6+9+menu.item,--user_adjust[user_config[video_input]][menu.item-1]);
		  break;
		case 5:  
		  if(user_config[video_input]!=TV)
		  {
		    screen_mirror(user_adjust[user_config[video_input]][4]^=1);
		    EEPROMwrite((user_config[video_input]-1)*6+9+menu.item,user_adjust[user_config[video_input]][4]);
		  }
		  break;
		case 6:
		  if((++user_adjust[user_config[video_input]][5])==3)
		    user_adjust[user_config[video_input]][5]=0;
		  EEPROMwrite((user_config[video_input]-1)*6+15,user_adjust[user_config[video_input]][5]);
		  screen_mode(user_adjust[user_config[video_input]][5]);
		  break;
//		case 7:     //停止自动搜台
//		  auto_tune();
//		  break;
		case 8:     //手动搜台
		  tmp=CHwrite(user_config[channel]);
		  FI1256write(--tmp);
		  EEPROMwrite(user_config[channel]*2+48,tmp/256);    
		  EEPROMwrite(user_config[channel]*2+49,tmp%256);    
		  break;
		case 9:     //频道
	      if(user_config[channel]>0)
		  {
	        CHwrite(--user_config[channel]);	
			OSD_out_num(3,11,user_config[channel],0);
		  }
		  break;
		}
		dis_menu(menu.item);
	  }
	  else if(user_config[video_input]==TV)
	  {
	    if(user_config[volume]>0)
	      EEPROMwrite(volume,--user_config[volume]);
		dis_volume();
	  }
	  break;
	case KRIGHT:    //音量加/亮度加
	  if(menu.page!=0)
	  {
	    switch(menu.item)
		{
		case 1:
		case 2:
		case 3:
		case 4:
		  if(user_adjust[user_config[video_input]][menu.item-1]<63)
		    EEPROMwrite((user_config[video_input]-1)*6+9+menu.item,++user_adjust[user_config[video_input]][menu.item-1]);
		  break;
		case 5:
		  if(user_config[video_input]!=TV)
		  {
		    screen_mirror(user_adjust[user_config[video_input]][4]^=1);
		    EEPROMwrite((user_config[video_input]-1)*6+9+menu.item,user_adjust[user_config[video_input]][4]);
		  }
		  break;
		case 6:
		  if((++user_adjust[user_config[video_input]][5])==3)
		    user_adjust[user_config[video_input]][5]=0;
		  EEPROMwrite((user_config[video_input]-1)*6+15,user_adjust[user_config[video_input]][5]);
		  screen_mode(user_adjust[user_config[video_input]][5]);
		  break;
		case 7:   //停止自动搜台
		  auto_tune();
		  break;
		case 8:     //手动搜台
		  tmp=CHwrite(user_config[channel]);
		  FI1256write(++tmp);
		  EEPROMwrite(user_config[channel]*2+48,tmp/256);    
		  EEPROMwrite(user_config[channel]*2+49,tmp%256);    
		  break;
		case 9:     //频道
	      if(user_config[channel]<CHANNEL_AMOUNT)
		  {
	        CHwrite(++user_config[channel]);	
			OSD_out_num(3,11,user_config[channel],0);
		  }
		  break;
		}
		dis_menu(menu.item);
	  }
	  else if(user_config[video_input]==TV)
	  {
	    if(user_config[volume]<63)
	      EEPROMwrite(volume,++user_config[volume]);
		dis_volume();
	  }
	  break;
	case KAV:  //视频选择
	  if((PINB&FPBACK)!=FPBACK)
	  {
	    user_config[video_input]++;
	    if(user_config[video_input]>BACK)
	      user_config[video_input]=TV;
	    exe_video_choose(user_config[video_input]);
	    EEPROMwrite(video_input,user_config[video_input]);
	  }
	  break;
	}
	if((PINB&FPBACK)==FPBACK)
	{
	  if(fback==0)
	  {
	    exe_video_choose(BACK);
	    fback=1;
		OSD_time=OSD_TIME;
	  }
	  natural=0;
	}
	else
	{
	  if(natural==0)
	  {
	    natural=1;
		exe_video_choose(user_config[video_input]);
		OSD_time=OSD_TIME;
	  }
	  fback=0;
	}  
	if(v_black==1)
	{
	  v_black=0;
	if(fff==1)
	{
	  fff=0;
	  if(sync_time<160)  //NTSC
	    pal_ntsc(NTSC);
	  else
	    pal_ntsc(PAL);
		
	  user_config[volume]=sync_time>>1;
	  dis_volume();
	  OSD_time=100;
	}}
  } 
}
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#ATMega8 #WinRar #3.2 #MCU
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