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/*
1 IRC_CLKO/INT2/CLKOUT1/T0/RST/P3^4 8 RSTOUT_LOW/INT1/P3^3
2 VCC(5V) 7 INT0/P3^2
3 INT3/CLKOUT0/T1/P3^5 6 P3^1/TXD
4 GND 5 INT4/P3^0/RXD
燒錄時(shí),燒錄器的VCC接2腳,TXD接5腳,RXD接6腳,GND接4腳
*/
//本來是想至少做上一首和下一首的,但發(fā)現(xiàn)在按鍵上焊線后,按鍵線同時(shí)接IO口會(huì)沖突
//(用51單片機(jī)的4個(gè)IO口也測(cè)試過)下一首能正常時(shí),上一首卻變成了暫停
//看看有沒有高手幫忙找到問題
//現(xiàn)在暫時(shí)只有下一首的功能
//////STC15F104////////////
#include <STC15F2K60S2.H>
#define uchar unsigned char
#define uint unsigned int
#define T50MS (65536-50000) //12T模式
/************* 用戶系統(tǒng)配置 **************/
//燒錄頻率請(qǐng)選12.000MHz
#define MAIN_Fosc 12000000L //定義主時(shí)鐘, 模擬串口和紅外接收會(huì)自動(dòng)適應(yīng)。5~36MHZ
#define D_TIMER0 125 //選擇定時(shí)器時(shí)間, us, 紅外接收要求在60us~250us之間
#define User_code 0x00FF //定義紅外接收用戶碼(38K的迷你遙控器通用)
/************* 以下宏定義用戶請(qǐng)勿修改 **************/
#define freq_base (MAIN_Fosc / 1200)
#define Timer0_Reload (65536 - (D_TIMER0 * freq_base / 10000))
/************* 本地變量聲明 **************/
bit P_IR_RX_temp; //Last sample
bit B_IR_Sync; //已收到同步標(biāo)志
uchar IR_SampleCnt; //采樣計(jì)數(shù)
uchar IR_BitCnt; //編碼位數(shù)
uchar IR_UserH; //用戶碼(地址)高字節(jié)
uchar IR_UserL; //用戶碼(地址)低字節(jié)
uchar IR_data; //數(shù)據(jù)原碼
uchar IR_DataShit; //數(shù)據(jù)反碼
bit B_IrUserErr; //User code error flag
bit B_IR_Press; //Key press flag,include repeat key.
uchar IR_code; //IR code 紅外鍵碼
sbit AJ_L =P3^3; //按鍵左
sbit AJ_R =P3^4; //按鍵右
sbit P_IR_RX =P3^2; //定義紅外接收輸入端口
uint i1,ontime,offtime; //ontime=開啟時(shí)間,offtime=關(guān)閉時(shí)間
uchar k,data1=0x01; //k=模式值
bit b;
/************* 本地函數(shù)聲明 **************/
void delay1ms(void) //延時(shí)
{
unsigned char i,j;
for(i=0;i<10;i++)
for(j=0;j<33;j++)
;
}
////////////////////////////////////////////
void delay(unsigned char n) //延時(shí)
{
unsigned char i;
for(i=0;i<n;i++)
delay1ms();
}
/////////////////////////////////////////////////////////////
void Model_2(void)
{
ontime=2; //開啟時(shí)間
offtime=0; //關(guān)閉時(shí)間
}
/////////////////////////////////////////////////////////////
//判斷接收的編碼，執(zhí)行相應(yīng)功能(根據(jù)需要自行修改)
void _data_(void)
{
switch(IR_data) //紅外接收成功
{
case 0x09: //遙控器按鍵值
k=2; //Model_2
i1=0;b=1;
break;
}
IR_data=0x00; //必須清零
}
////////////////////////////////////////////
void main(void) //主函數(shù)
{
IE = 0x82; //開總中斷和T0中斷允許
IE2 = 0x04; //T2中斷允許
TMOD = 0; //for STC15Fxxx系列 Timer0 as 16bit reload timer.
TH0 = Timer0_Reload / 256;
TL0 = Timer0_Reload % 256;
T2L = T50MS; //初始化計(jì)時(shí)值5ms中斷一次
T2H = T50MS >> 8;
TR0 =1;
k =0;
while(1) //無限循環(huán)
{
switch(k) //判斷k的值
{
case 2: AUXR=0x10;
Model_2(); //模式2
break;
}
}
}
/*************紅外接收部分程序是引用STC官方的資料******************************/
/******************** 紅外采樣時(shí)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(shí)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
_data_();
}
}
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
}
}
}
}
}
/********************** Timer0中斷函數(shù)************************/
void timer0 (void) interrupt 1
{
IR_RX_HT6121(); //紅外
}
///////////////////////////////////////////
void time2(void ) interrupt 12
{
TR0=0; //T2中斷期間關(guān)閉T0中斷
i1++; //計(jì)次數(shù)
if(b==1) //b=開啟和關(guān)閉狀態(tài)
{
AJ_L=0; //按鍵左
AJ_R=0; //按鍵右
if(i1==ontime) //開啟時(shí)間
{
i1=0;
b=0;
k=0;
AJ_L=1; //按鍵左
AJ_R=0; //按鍵右
}
}
if(b==0)
{
AJ_L=1; //按鍵左
AJ_R=0; //按鍵右
if(i1==offtime) //關(guān)閉時(shí)間
{
i1=0;
b=1;
}
}
TR0=1; //T2中斷結(jié)束，開啟T0中斷
}

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