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/************************************************************
單片機(jī): STC15F104W/STC15W104
晶振: 12.000MHz
功能: 紅外遙控(4個(gè)IO口實(shí)現(xiàn)5個(gè)功能)
1.上一首 2.下一首 3.暫停 4.音量+ 5.音量-
注:單片機(jī)供電必需用USB口供電,不能用DC口供電
*************************************************************/
#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
//MP3 IO口接線說明
sbit A1=P3^4; //接Next/V++的左側(cè)(高電平)
sbit A2=P3^5; //接Prev/V++的右側(cè)(低電平)
sbit B1=P3^1; //接Prev/V--的左側(cè)(高電平)
sbit B2=P3^0; //接Prev/V--的右側(cè)(低電平)
sbit P_IR_RX =P3^2; //定義紅外接收輸入端口
uchar k,data1=0x01; //k=模式值
/************* 本地函數(shù)聲明 **************/
//////////////////////////////////////////
void DelayMS(uint time)//延時(shí)函數(shù)，有參函數(shù)
{
uint i4,j4;
for(i4=time; i4>0; i4--)
for(j4=110; j4>0; j4--);
}
/////////////////////////////////////////////////////////////
//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
{
//不要修改A1、A2、B1、B2的值,都是已經(jīng)測試好的
case 0x07: //上一首
k=1;
A1=0;A2=0;B1=0;B2=1;
DelayMS(2000); //相當(dāng)于按下輕觸按鍵后再松開(這里用延時(shí)再還原的方法進(jìn)行模擬)
A1=1;A2=0;B1=1;B2=0;
break;
case 0x09: //下一首
k=1;
B1=0;B2=0;
DelayMS(2000); //同上可根據(jù)需求自行修改延時(shí)時(shí)間
B1=1;B2=0;
break;
case 0x15: //暫停
A1=0;A2=1;B1=0;B2=1;
DelayMS(2000); //同上可根據(jù)需求自行修改延時(shí)時(shí)間
A1=1;A2=0;B1=1;B2=0;
break;
case 0x40: //音量+
k=1;
A1=1;A2=0;B1=0;B2=0;
DelayMS(20000); //同上可根據(jù)需求自行修改延時(shí)時(shí)間
A1=1;A2=0;B1=1;B2=0;
break;
case 0x19: //音量-
k=1;
A1=0;A2=0;B1=0;B2=1;
DelayMS(20000); //同上可根據(jù)需求自行修改延時(shí)時(shí)間
A1=1;A2=0;B1=1;B2=0;
break;
default: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;A1=1;A2=0;B1=1;B2=0; //初始化
while(1) //無限循環(huán)
{
switch(k) //判斷k的值
{
case 0: AUXR=0x00; //停止中斷
break;
case 1: AUXR=0x10; //開啟中斷
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
……………………
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