save.txt

很好的红外解码程序

#include <avr/io.h>


#define WR      0b10000000//时钟线
#define DATA    0b00000001//数据线
#define CS      0b00100000//片选线
#define RD      0b01000000

#define dat_1 PORTC|=0x01
#define dat_0 PORTC&=~0x01
#define  wr_1  PORTD|=0x80
#define  wr_0  PORTD&=~0x80
#define  cs_1  PORTD|=0x20
#define  cs_0  PORTD&=~0x20


//#define BIAS   0x28
#define BIAS   0x29
#define SYSEN  0x01
#define LCDOFF 0x02
#define LCDON  0x03

/*
	  	   			   0b00000001,//打开系统振荡器命令
      	               0b00000011,//打开LCD偏压发生器命令
     				   0b00000101,//WDT 溢出标志输出失效命令
    				   0b00000110,//时基输出使能命令
    				   0b00011000,//系统时钟源片内RC振荡器命令
    				   0b00101001,//LCD1/3偏压选项4个公共口命令
    				   //0b01000000,//声音频率4KHz命令
    				   //0b00001001,//打开声音输出命令
    				   0b10100000,//时基/WDT 时钟输出1Hz命令
    				   0b10001000 //使/IRQ 输出有效命令
*/

void delay_us(unsigned int a)
{
while(a-->0)asm("NOP");
}

void delay_ms(unsigned int a)
{
while(a>0)
{
a--;
delay_us(1000);
}
}

//////////////////////////////////////////////////
//mcu send bit  to lcm
//////////////////////////////////////////////////
void SendBit_1621(unsigned char data,unsigned char cnt) //data 的高cnt 位写入HT1621，高位在前
{
unsigned char  i=0;
for(i =0; i <cnt; i ++)
{
if((data&0x80)==0) dat_0;
else               dat_1;
wr_0;
asm("NOP");asm("NOP");asm("NOP");asm("NOP");asm("NOP");asm("NOP");
wr_1;
data<<=1;
}
}
//////////////////////////////////////////////////
//mcu send bit  to lcm
//////////////////////////////////////////////////
void SendDataBit_1621(unsigned char data,unsigned char cnt) //data 的低cnt 位写入HT1621，低位在前
{
unsigned char i=0;
for(i =0; i <cnt; i ++)
{
if((data&0x01)==0) dat_0;
else               dat_1;
wr_0;
asm("NOP");asm("NOP");asm("NOP");asm("NOP");asm("NOP");asm("NOP");
wr_1;
data>>=1;
}
}
//////////////////////////////////////////////////
//mcu read  data  from lcm
//////////////////////////////////////////////////
unsigned char  read_1621(unsigned char address) 
{
unsigned char  i=0;
unsigned char  dat[4]={0,0,0,0};
unsigned char  result=0;

for(i =0; i <4; i ++)
{
if((PIND&0x40)==0) dat[i]=0;
else               dat[i]=1;
wr_0;
asm("NOP");asm("NOP");asm("NOP");asm("NOP");asm("NOP");asm("NOP");
wr_1;
}

result=dat[0]+2*dat[1]+4*dat[2]+8*dat[3];
return result;
}

//////////////////////////////////////////////////
//mcu send commmand  to lcm
//////////////////////////////////////////////////
void SendCmd(unsigned char command)
{
cs_0;
SendBit_1621(0x80,3); //写入标志码"100"
SendBit_1621(command,9); //写入9 位数据,其中前8 位为command 命令,最后1 位任意
cs_1;
}
//////////////////////////////////////////////////
//mcu send data  to lcm
//////////////////////////////////////////////////
void Write_1621(unsigned char addr,unsigned char data)
{
cs_0;
SendBit_1621(0xa0,3); //写入标志码"101"
SendBit_1621(addr<<2,6); //写入6 位addr
SendDataBit_1621(data,4); //写入data 的低4 位
cs_1;
}

//////////////////////////////////////////////////
//mcu send datas  to lcm
//////////////////////////////////////////////////
void WriteAll_1621(unsigned char addr,unsigned char *p,unsigned char cnt)
{
unsigned char i=0;
cs_0;
SendBit_1621(0xa0,3); //写入标志码"101"
SendBit_1621(addr<<2,6); //写入6 位addr
for(i =0; i <cnt; i ++,p++) //连续写入数据
{
SendDataBit_1621(*p,8);
}
cs_1;
}



int main(void)
{
char i=0;
unsigned  char  data_show=0;

//////////////////////////////// //output
 PORTC = 0x01; DDRC  = 0x01;
 PORTD = 0xa0;DDRD  = 0xa0;

SendCmd(BIAS);
SendCmd(SYSEN);
SendCmd(LCDON);

SendCmd(0b00000101);//WDT 溢出标志输出失效命令
SendCmd(0b00000110);//时基输出使能命令
SendCmd(0b00011000);//系统时钟源片内RC振荡器命令

SendCmd(0b10100000);//时基/WDT 时钟输出1Hz命令
SendCmd(0b10001000); //使/IRQ 输出有效命令


//WriteAll_1621(0,a,5); //在起始地址为0 处连续写入5 个字节数据
//a为写入数据的起始地址，5 为写入的字节数

//SendCmd(LCDOFF);

for(i=0;i<16;i++)
{Write_1621(i,0);}

delay_ms(10);


Write_1621(0,0x01);
data_show=read_1621(0);

Write_1621(0,0x02|data_show);
data_show=read_1621(0);

Write_1621(0,0x04|data_show);
data_show=read_1621(0);

Write_1621(0,0x08|data_show);
data_show=read_1621(0);


while(1)
{

}

}













/*
Write_1621(0,0x0f);
Write_1621(1,0x0f);
Write_1621(2,0x0f);
Write_1621(3,0x0f);
Write_1621(4,0x0f);
Write_1621(5,0x0f);
Write_1621(6,0x0f);
Write_1621(7,0x0f);
Write_1621(8,0x0f);
Write_1621(9,0x0f);
Write_1621(10,0x0f);
Write_1621(11,0x0f);
Write_1621(12,0x0f);
Write_1621(13,0x0f);
Write_1621(14,0x0f);
Write_1621(15,0x0f);

for(i=15;i<16;i++)
{
Write_1621(i,0x00);
asm("NOP");asm("NOP");asm("NOP");asm("NOP");asm("NOP");asm("NOP");asm("NOP");
}

delay_ms(100);


for(i=15;i<16;i++)
{
Write_1621(i,0x0f);
asm("NOP");asm("NOP");asm("NOP");asm("NOP");asm("NOP");asm("NOP");asm("NOP");
}
delay_ms(100);
}
*/