📄 ir_light.c
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/************************************************************
* Processer : Microchip PIC16c56 *
* Compiler : Hi-TECH PICC 8.01 PL3 *
* Writer : dulingan *
* Description : *
*************************************************************/
#include <pic.h>
#include "ir_light.h"
bit ir_key_ok;
bit f_key_release;
bit led1_status;
bit led2_status;
bit led3_status;
bit f_beep;
bit f_power_key_press;
Byte ir_receive_code[3];
Byte ir_receive_buf[3];
Byte all_status;
Word iic_high_code;
void check_power_key(void);
Word Read(Byte address);
void init_all(void)
{
TRISA = 0x03;//0x00; // RA0~3为输出脚，控制继电器
p_led1 = 1;
p_led2 = 0;
p_led3 = 0;
TRISB = 0x41;//0x59; //01011001b; 6 ir_port:i,5 beep:o, 4 jump:i, 3 detect:i, 2 clk:o, 1 di:o, 0 do:i
OPTION = 0x04; // PS2~PS0: 1:32分频，PSA为TMR0，RTE为低电平触发，RTS信号源为内部时钟
// f_key_release = TRUE;
all_status = 2;
led1_status = ON;
led2_status = OFF;
led3_status = OFF;
ir_key_ok = FALSE;
f_power_key_press=0;
p_beep=0;
clrwdt();
}
bit ir_rec_overflow(void)
{
if(TMR0 >TIME_14A )
{
return TRUE;
}
else
{
return FALSE;
}
}
/*****************************************************************
*** 函数说明：接收1位遥控码子程序
*** 出口参数：ir_code有三种状态， 00: 0 ， 01：F， 11: 1 10,出错
******************************************************************/
Byte ir_receive_one_bit(void)
{
Byte ir_code = 0;
TMR0 = 0;
TRISB = 0x41;//0x59; // 重设端口，防止干扰
while(!ir_port)
{
if(ir_rec_overflow())
return ERROR_CODE;
}
TMR0 = 0;
while(ir_port)
{
if(ir_rec_overflow())
return ERROR_CODE;
}
if( TMR0>TIME_10A )
{
ir_code = 1;
}
else
{
ir_code = 0;
}
ir_code <<= 1;
TMR0 = 0;
while(!ir_port)
{
if(ir_rec_overflow())
return ERROR_CODE;
}
TMR0 = 0;
while(ir_port)
{
if(ir_rec_overflow())
return ERROR_CODE;
}
if( TMR0>TIME_10A )
{
ir_code |= (Byte)1;
}
return ir_code;
}
bit wait_syn_bit(void)
{
Byte buf=0;
TMR0 = 0;
while(1)
{
clrwdt();
if(!ir_port)
{
if( TMR0>TIME_110A )
{
return TRUE;
}
}
else
{
buf += TMR0;
TMR0 = 0;
if(buf>250)
{
return FALSE;
}
}
}
}
bit ir_receive(void)
{
Byte i;
TMR0 = 0;
clrwdt();
if(!wait_syn_bit())
return NO_KEY;
clrwdt();
while(!ir_port) // 等待同步位结束，即等待0结束
{
if( TMR0 > TIME_130A ) // 如果为0的时间大于130a时，表示没有遥控按下，应该退出
{
return NO_KEY;
}
}
for(i=0;i<4;i++) // 后读16位，共24位
{
ir_receive_code[0] <<= 2;
ir_receive_code[0] |= ir_receive_one_bit();
}
for(i=0;i<4;i++) // 后读16位，共24位
{
ir_receive_code[1] <<= 2;
ir_receive_code[1] |= ir_receive_one_bit();
}
for(i=0;i<4;i++) // 后读16位，共24位
{
ir_receive_code[2] <<= 2;
ir_receive_code[2] |= ir_receive_one_bit();
}
return HAVE_KEY;
}
bit ir_receive_key(void)
{
Byte i;
clrwdt();
ir_receive_buf[0] = ir_receive_code[0];
ir_receive_buf[1] = ir_receive_code[1];
ir_receive_buf[2] = ir_receive_code[2];
for(i=0;i<4;i++)
{
check_power_key();
if(!ir_receive())
{
return NO_KEY;
}
if(ir_receive_buf[0] != ir_receive_code[0] || ir_receive_buf[1] != ir_receive_code[1] || ir_receive_buf[2] != ir_receive_code[2])
{
return NO_KEY;
}
}
clrwdt();
return HAVE_KEY;
}
void ir_key_deal(void)
{
clrwdt();
if(ir_key_ok )
{
if( (iic_high_code>>8)==ir_receive_code[0] && (iic_high_code&0xff)==ir_receive_code[1] )
{
switch(ir_receive_code[2]) // KEYA
{
case KEYA:
if(led1_status)
led1_status = 0;
else
led1_status = 1;
p_led1 = led1_status ;
ir_key_ok = FALSE;
f_beep = TRUE;
break;
case KEYB:
if(led2_status)
led2_status = 0;
else
led2_status = 1;
p_led2 = led2_status ;
ir_key_ok = FALSE;
f_beep = TRUE;
break;
case KEYC:
if(led3_status)
led3_status = 0;
else
led3_status = 1;
p_led3 = led3_status ;
ir_key_ok = FALSE;
f_beep = TRUE;
break;
case KEYD:
if(led1_status || led2_status || led3_status )
{
led1_status=OFF;
led2_status=OFF;
led3_status=OFF;
}
else
{
led1_status=ON;
led2_status=ON;
led3_status=ON;
}
p_led1 = led1_status;
p_led2 = led2_status;
p_led3 = led3_status;
ir_key_ok = FALSE;
f_beep = TRUE;
break;
default:
ir_key_ok = FALSE;
break;
}
}
else
{
ir_key_ok = FALSE;
}
}
clrwdt();
}
void beep(void)
{
if(f_beep )
{
p_beep = HIGH;
}
else
{
p_beep = LOW;
}
}
void check_power_key(void)
{
if(f_power_key_press)
{
if(all_status==1)
{
p_led1 = ON;
p_led2 = OFF;
p_led3 = OFF;
led1_status = ON;
led2_status = OFF;
led3_status = OFF;
}
else if(all_status==2)
{
p_led1 = ON;
p_led2 = ON;
p_led3 = OFF;
led1_status = ON;
led2_status = ON;
led3_status = OFF;
}
else if(all_status==3)
{
p_led1 = ON;
p_led2 = ON;
p_led3 = ON;
led1_status = ON;
led2_status = ON;
led3_status = ON;
}
all_status++;
if(all_status>3)
{
all_status = 1;
}
f_power_key_press = FALSE;
}
else
{
while(!p_power_off) // 关掉电
{
led1_status = OFF;
led2_status = OFF;
led3_status = OFF;
p_led1 = led1_status;
p_led2 = led2_status;
p_led3 = led3_status;
f_power_key_press = TRUE;
clrwdt();
}
}
}
// Write enable must precede all programming modes.
void Ewen(void)
{
Byte temp,InData;
CS=0;
CLK=0;
CS=1;
DI = 1;
CLK = 1;CLK=1;CLK=1;
nop();nop();nop();
CLK=0;
InData=0x30; // 10011XXXXX
for(temp=0;temp<8;temp++)
{
if(InData&0x80)
DI = 1;
else
DI = 0;
//DI=InData&0x80;
CLK=1;CLK=1;CLK=1;
nop();
nop();
CLK=0;
InData<<=1;
}
CS=0;
}
// Disables all programming instructions.
void Ewds(void)
{
Byte temp,InData;
CS=0;
CLK=0;
CS=1;
DI = 1;
CLK = 1;CLK=1;CLK=1;
nop();nop();nop();
CLK = 0;
InData=0; // 10000XXXXX
for(temp=0;temp<8;temp++)
{
//DI=InData&0x80;
if(InData&0x80)
DI = 1;
else
DI = 0;
CLK=1;CLK=1;CLK=1;
nop();
nop();
CLK=0;
InData<<=1;
}
CS=0;
}
// Reads data stored in memory, at specified address.
Word Read(Byte address)
{
Byte temp;
Word result;
Ewen();
CS=0;
CLK=0;
nop();
nop();
CS=1;
DI=1; // 110 A5-A0
CLK=1;CLK=1;CLK=1;
nop();
nop();
CLK=0; // 1
address=(address&0x3f)|0x80;
for(temp=0;temp<8;temp++)
{
if(address&0x80)
DI = 1;
else
DI = 0;
CLK=1;CLK=1;CLK=1;
nop();
nop();
CLK=0;
address<<=1;
}
nop();
nop();
result = 0;
for(temp=0;temp<16;temp++)
{
result <<= 1;
CLK=1;CLK=1;CLK=1;
nop();nop();nop();
CLK=0;
if(DO==1)
result |= 0x01;
}
CS=0;
Ewds();
return(result);
}
// Writes memory location An - A0.
void Write(Byte address,Word InData)
{
Byte temp;
Ewen();
CLK=0;
CS=0;
nop();
nop();
CS=1;
DI=1; // 101 A5-A0
CLK=1;CLK=1;CLK=1;
nop();
nop();
CLK=0; // 1
address=address&0x3f|0x40;
for(temp=0;temp<8;temp++)
{
if(address&0x80)
DI = 1;
else
DI = 0;
CLK=1;CLK=1;CLK=1;
nop();
nop();
CLK=0;
address<<=1;
}
for(temp=0;temp<16;temp++)
{
if(InData&0x8000)
DI = 1;
else
DI = 0;
CLK=1;CLK=1;CLK=1;
nop();
nop();
CLK=0;
InData<<=1;
}
CS=0;
TRISB = 0x40;//0x58
nop();nop();nop();nop();nop();
DO=1;
TRISB = 0x41;//0x59;
nop();
nop();
CS=1; CLK=1;
while(DO==0)
{ // busy test
CLK=0;
nop();
nop();
CLK=1;
}
CLK=0; CS=0;
Ewds();
}
//不按遥控时，每个循环时间为100ms，按遥控时300ms
void main(void)
{
Byte release_time;
init_all();
for(release_time=0;release_time<250;release_time++);
init_all();
if(!p_jump)
{
while(!ir_receive_key())
continue;
iic_high_code = ir_receive_code[0];
iic_high_code<<= 8;
iic_high_code+= ir_receive_code[1];
Write(0x10,iic_high_code); // 高位地址码，共三位
f_beep = TRUE;
clrwdt();
}
else
{
iic_high_code=Read(0x10);
nop();
}
while(1)
{
iic_high_code=Read(0x10);
nop();
if(ir_receive_key())
{
if(f_key_release)
{
ir_key_ok = TRUE;
f_key_release = FALSE;
}
release_time=0;
}
else
{
release_time++;
if(release_time>10 ) // 灵敏度调节
{
f_key_release = TRUE;
f_beep = FALSE;
}
}
ir_key_deal();
check_power_key();
check_power_key();
beep();
clrwdt();
}
}
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