EA=1; //允許總中斷
ConfigTimer1(25);
InitTimer(); //初始化Timer
while(1)
{
if(B_IR_Press) //有IR鍵按下
{
switch(IR_code)
{
case 0x01:
userLed1=~userLed1;
break;
case 0x00:
userLed2=~userLed2;
break;
case 0x04:
userLed3=~userLed3;
break;
case 0x08:
userLed4=~userLed4;
break;
case 0x43:
userLed5=~userLed5;
break;
}
B_IR_Press = 0; //清除IR鍵按下標(biāo)志
}
}
}
//*******************************************************************
//*********************** IR Remote Module **************************
//*********************** IR Remote Module **************************
//this programme is used for Receive IR Remote (HT6121).
//data format: Synchro,AddressH,AddressL,data,/data, (total 32 bit).
//send a frame(85ms), pause 23ms, send synchro of another frame, pause 94ms
//data rate: 108ms/Frame
//Synchro:low=9ms,high=4.5/2.25ms,low=0.5626ms
//Bit0:high=0.5626ms,low=0.5626ms
//Bit1:high=1.6879ms,low=0.5626ms
//frame space = 23 ms or 96 ms
/******************** 紅外采樣時間宏定義, 用戶不要隨意修改 *******************/
#if ((D_TIMER0 <= 250) && (D_TIMER0 >= 60))
#define D_IR_sample D_TIMER0 //定義采樣時間，在60us~250us之間
#endif
#define D_IR_SYNC_MAX (15000/D_IR_sample) //SYNC max time
#define D_IR_SYNC_MIN (9700 /D_IR_sample) //SYNC min time
#define D_IR_SYNC_DIVIDE (12375/D_IR_sample) //decide data 0 or 1
#define D_IR_DATA_MAX (3000 /D_IR_sample) //data max time
#define D_IR_DATA_MIN (600 /D_IR_sample) //data min time
#define D_IR_DATA_DIVIDE (1687 /D_IR_sample) //decide data 0 or 1
#define D_IR_BIT_NUMBER 32 //bit number
//*******************************************************************************************
//**************************** IR RECEIVE MODULE ********************************************
void IR_RX_HT6121(void)
{
uchar SampleTime;
IR_SampleCnt++; //Sample + 1
F0 = P_IR_RX_temp; //Save Last sample status
P_IR_RX_temp = P_IR_RX; //Read current status
if(F0 && !P_IR_RX_temp) //Last sample is high，and current sample is low, so is fall edge
{
SampleTime = IR_SampleCnt; //get the sample time
IR_SampleCnt = 0; //Clear the sample counter
if(SampleTime > D_IR_SYNC_MAX) B_IR_Sync = 0; //large the Maxim SYNC time, then error
else if(SampleTime >= D_IR_SYNC_MIN) //SYNC
{
if(SampleTime >= D_IR_SYNC_DIVIDE)
{
B_IR_Sync = 1; //has received SYNC
IR_BitCnt = D_IR_BIT_NUMBER; //Load bit number
}
}
else if(B_IR_Sync) //has received SYNC
{
if(SampleTime > D_IR_DATA_MAX)
B_IR_Sync=0; //data samlpe time to large
else
{
IR_DataShit >>= 1; //data shift right 1 bit
if(SampleTime >= D_IR_DATA_DIVIDE) IR_DataShit |= 0x80; //devide data 0 or 1
if(--IR_BitCnt == 0) //bit number is over?
{
B_IR_Sync = 0; //Clear SYNC
if(~IR_DataShit == IR_data) //判斷數(shù)據(jù)正反碼
{
if((IR_UserH == (User_code / 256)) &&
IR_UserL == (User_code % 256))
B_IrUserErr = 0; //User code is righe
else B_IrUserErr = 1; //user code is wrong
IR_code = IR_data;
B_IR_Press = 1; //數(shù)據(jù)有效
}
}
else if((IR_BitCnt & 7)== 0) //one byte receive
{
IR_UserL = IR_UserH; //Save the User code high byte
IR_UserH = IR_data; //Save the User code low byte
IR_data = IR_DataShit; //Save the IR data byte
}
}
}
}
}