main.c

p89lpc915程序

#include "comm.h"
#include "ir.h"
#include "ic165.h"
#include "message.h"
#include "Key_process.h"
#include "debug.h"
/*
 *SYSTEM CLOCK IS 4MHz
 */

//extern uint pre_code;
//unsigned
uchar user_key = 0xff;
int linear_timer = 0;
uchar Get_key_timer = 0;

#ifdef DEBUG_PRINTF1

  	bit test_flag = 0;
  
 #endif
  
uchar codeIR;
bit ir_enable = 0;	/*IR receive valid?*/
bit power_flag = 0;	/*POWER valid?*/

void timer1_interrupt_service() interrupt 3 
/*system timer increase 10mS*/
{
  #ifdef DEBUG_PRINTF1

         static uchar delay_time_cnt = 0;
  
  #endif
  
	TR1 = 0;
	TH1 = TIMER0_RELOAD_HIGH;//0xB1;
	TL1 = TIMER0_RELOAD_LOW;//0xED;	/*add 0xd to adjust timer*/
	TR1 = 1;
	
	if(linear_timer > 0)
		{
		linear_timer = linear_timer - 1;
		}
       if(Get_key_timer >0)   /*扫描按键的时间*/
       	{
	   	Get_key_timer --;
       	}
  #ifdef DEBUG_PRINTF1
       delay_time_cnt ++;
	   if( delay_time_cnt == 100)
	   	{
	   	test_flag = 1;
		delay_time_cnt = 0;
	   	}
  #endif
	   	
/*	linear_timer ++;*/
}

void system_timer_init()
/*I use timer1 to generate system time*/
{
	TH1 =TIMER0_RELOAD_HIGH ;//0xBE;
	TL1 = TIMER0_RELOAD_LOW;//0xE0;
	TR1 = 1;
	ET1 = 1;
}
#if 1
void delay(unsigned int j)   /*0.173ms*/
{
	unsigned char i ;  
	for(;j>0;j--)
		{
		i = 10;
		while(--i);	/*10uS*/
		}
}
#endif


void set_system_baud_rate(uchar mode)  /*7.3728 MHz /2*/
{
	uchar reg_brgr0 = 0,reg_brgr1 = 0;

	switch(mode)
		{
		case 0:
			reg_brgr0 = 0x50;
//			baud_rate = 38400;
			break;
		case 1:
			reg_brgr0 = 0xB0;
			reg_brgr1 = 0x00;
//			baud_rate = 19200;
			break;
		case 2:
			reg_brgr0 = 0x70;
			reg_brgr1 = 0x01;
//			baud_rate = 9600;
			break;
		case 3:
			reg_brgr0 = 0x10;
//			baud_rate = 115200;
			break;
             case 4:
			reg_brgr0 = 0xF0;
			reg_brgr1 = 0x02;
//			baud_rate = 4800;

			 break;
		}

	PCON = 0x40;
	SCON = 0x50;
	BRGCON = 0;
	BRGR0 = reg_brgr0;
	BRGR1 = reg_brgr1;
	BRGCON = 3;
}



/*
	QUASI_BIDIRECTIONAL:	00
	PUSH_PULL:		01
	INPUT_ONLY:		10
	OPEN_DRAIN:		11
*/

void io_config()
{
	P0M1 = 0x00;/* 0.0 推挽*/
	P0M2 = 0x23;
	//P0 = 0x7c   /**/;
	P1M1 = 0x06;//0x04  jian
	P1M2 = 0x17;  
	/*p1.1 LED 为准双向设置
          p1.2  发送为输出1  0
          p1.3 IR 接受，准双向 00.
          p1.4 rst_n  输入
       
	*/
//	P1 = 0xB0;
}
#if 0
unsigned char LSbTMsb(unsigned char  Ldata)
{
unsigned char Mdata,i;

for (i =0 ;i<8;i++)
	{
       if(Ldata & 0x01)
       	{
       	Mdata |= 0x01;
       	}
	   else
	   	{
	   	Mdata &= ~0x01;  	
	   	}
	   Ldata >>= 1;
	   if(i < 7)
 	   Mdata  <<= 1;
	}

     return Mdata;
}

#endif 
void main()
{

  #ifdef DEBUG_PRINTF

//         extern unsigned char ivcode,sys_code;

  #endif

  DIVM = 1;  /*将时钟分为一半的频率*/
	io_config();
      set_system_baud_rate(3);  /*115200*/
      /*start system timer*/
	TMOD = 0x11;
  	TH0 = 0x00;
	TL0 = 0x00;
	ET0 = 1;
	EX0 = 1;
	TR0 = 0;
	IT0	= 1;  /*中断1   下降廷触发*/
	EA = 1;
      system_timer_init();
	//STANDBY_LED = LED_POWER_ON;
       // proc_ir_sel_disp(14);
       
	 P1M1 = 0x06;
	 STANDBY_LED = LED_STANDBY;  /**/
	 RST_N = 0;  /*复位脚先拉低*/
	OUTPUT_IR = 1; 
       STANDBY_CTRL = CTRL_POWER_OFF;
	   #if 0
      	RST_N = 0;  /*复位脚先拉低*/
     	STANDBY_CTRL = CTRL_POWER_ON;				
    //proc_ir_sel_disp(6);  //delete zxl 07-10-09  去除灯闪烁
     	Rest_Mast_TvBox();	
  	STANDBY_LED = LED_STANDBY;
 	power_flag = 1;	/*POWER ON*/
	#endif
//	STANDBY_CTRL = CTRL_POWER_ON;
//	power_flag = 0;
//	proc_power_key();
	while(1)
		{
		#if 1
		if(Get_key_timer == 0)  /*10ms扫描一次*/
			{
	             GetPanelKeyThread();
			Get_key_timer = 1;
			}
		#endif
		
		if(ir_enable)
			{
		#ifdef DEBUG_PRINTF
			tvbox_printf("button code:",codeIR,1);
		//	tvbox_printf("sys code:",sys_code,1);
		//	tvbox_printf("ivn code:",ivcode,1);
		#endif
			
			ir_enable = 0;
		      //codeIR = LSbTMsb(codeIR); /*jian add in 07-07-31*/
			user_key = codeIR;
			}
		if(user_key != 0xff/*_NO_KEY*/)
			{
		//	tvbox_printf("user key:",user_key,1);
			key_service(user_key);
			user_key = 0xff;/*_NO_KEY*/;
			}
//		PutChar(0x55);
  #ifdef DEBUG_PRINTF1		

		if (test_flag == 1)  /*1 s 一次*/
			{
		    	PutChar(0x55);
			test_flag  = 0;
			}
#endif	
              
		delay(10);
		}
	
}