panelkey_to_ir.c

OSD 学习学习.天天向上.STUDY STUDY DAY DAY UP.

#include "reg51.h"
#include "intrins.h"
#include "panelkey_to_ir.h"
#include "global.h"
//#define IR_16MHZ
code unsigned int IR_Code_Tbl[10]=
{
0xe41b,	//IR_ROOT_MENU	0x20             
0xeb14,	//IR_UP		0x21             
0xe817,	//IR_DOWN	0x22                     
0xea15,	//IR_LEFT	0x23                     
0xe916,	//IR_RIGHT	0x24     
0xe51a,	//IR_PLAY_ENTER	0x25             
0xb649,	//IR_STOP	0x26                     
0xfc03,	//IR_EJECT	0x27     
0xaf50,	//IR_PREV	0x28                     
0xae51,	//IR_NEXT	0x29                     
};
//****************************************************
//****************************************************
void Send_Key_To_IR()
{
	EX1=0; //INT DISABLED
	Send_IR_Head_Syscode();
	Send_IR_CustomCode();
	EX1=1;
	
}
//****************************************************
//****************************************************
void Send_IR_Head_Syscode()
{
	unsigned int sys_code;
	unsigned char i;
	sys_code =IR_SYSTEM_CODE;
	PIN_CONV_IR=0;
	
	TH1=0xf5; 
	TL1=0x9f;   //9ms f582
	ir_conv_timer=0;
	while(ir_conv_timer==0);
	PIN_CONV_IR=1;
	TH1=0xfa; 
	TL1=0xdd; //fac1
	ir_conv_timer=0;
	while(ir_conv_timer==0);
	PIN_CONV_IR=0;
	//************************************
	for(i=0;i<16;i++)
	{
		if(sys_code&0x0001)
			Send_IR_1();
		else	
			Send_IR_0();
		sys_code>>=1;	
	}
}
//****************************************************
void Send_IR_CustomCode()
{
	unsigned int Vfd_key;
	unsigned char i;
	Vfd_key =IR_Code_Tbl[_VFD_Key-0x20];
	for(i=0;i<16;i++)
	{
		if(Vfd_key&0x0001)
			Send_IR_1();
		else	
			Send_IR_0();
		Vfd_key>>=1;	
	}
#ifdef  IR_16MHZ		
	for(i=0;i<90;i++)
#else
	for(i=0;i<22;i++)
#endif
	{_nop_();_nop_();_nop_();_nop_();_nop_();}  //90 for 16mhz
	PIN_CONV_IR=1;	
}
//****************************************************
void Send_IR_1()		//2.25ms
{
	TH1=0xff; 
	TL1=0xa4;   //0.75ms fe40
	ir_conv_timer=0;
	while(ir_conv_timer==0);
	PIN_CONV_IR=1;
	TH1=0xfe; 
	TL1=0x30;   //1.5ms ff1f  //57
	ir_conv_timer=0;
	while(ir_conv_timer==0);
	PIN_CONV_IR=0;	
}
//****************************************************
void Send_IR_0()		//1.25ms
{
	TH1=0xff; 
	TL1=0xa4;   //0.75ms //fe70
	ir_conv_timer=0;
	while(ir_conv_timer==0);
	PIN_CONV_IR=1;
	TH1=0xff; 
	TL1=0x37;   //0.5ms  ff69
	ir_conv_timer=0;
	while(ir_conv_timer==0);

	PIN_CONV_IR=0;
}
//****************************************************