uPD6121 avr红外解码程序.doc

uPD6121 avr红外解码程序#include #include #define uint unsigned int #define uchar unsigned char #define ulong unsigned long /*-显示-*/ #define LED_DATA PORTB const uchar tab=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71; /* 0 1 2 3 4 5 6 7 8 9 A B C D E F */ void delay(void) uint i; for(i=0;i12); /显示千位 PORTD=0xf7; delay(); /延时 LED_DATA=tab(uchar)(dis_data&0x0f00)8); /显示百位 PORTD=0xfb; delay(); /延时 LED_DATA=tab(uchar)(dis_data&0x00f0)4; /显示十位 PORTD=0xfd; delay(); /延时 LED_DATA=tab(uchar)dis_data&0x000f; /显示个位 PORTD=0xfe; delay(); /延时 void port_init(void) PORTA = 0xFF; DDRA = 0x00; PORTB = 0xFF; DDRB = 0xFF; PORTC = 0xFF; DDRC = 0xFF; PORTD = 0xFF; DDRD = 0x0F; void timer1_init(void) TCCR1B = 0x00; /stop TCNT1H = 0x00; /setup TCNT1L = 0x00; ICR1H = 0x00; ICR1L = 0x08; TCCR1A = 0x00; /*一体化接收头的DATA引脚接到ATmega16的PD6(ICP1)引脚，采用上升沿捕捉的方法解码*/ /*晶振为6M,无分频，用8M太大（分频则太小）*/ TCCR1B = 0x41; /start Timer uint arr16;/保存捕捉值 uchar times;/记录捕捉次数 uchar index;/数组索引 uchar ir_code;/红外遥控键码 uchar OK_flag;/解码完毕标志 /*- 模块名称：PD6(ICP1)引脚上升沿捕捉中断程序 影响： 将捕捉值保存在arr16中 _ _ | | | | _| |_| |_ | DEC HEX t=9ms 计数值54000 0xD2F0 t=4.5ms 计数值27000 0x6978 t=2.25ms 计数值13500 0x34BC t=1.125ms 计数值6750 0x1A5E -*/ #pragma interrupt_handler timer1_capt_isr:6 void timer1_capt_isr(void) uint value; value=ICR1L; /CLI(); value|=(uint)(ICR1H 18&=35) /第35个上升沿到来时，解码完毕 times=0; index=0; OK_flag=1; /SEI(); /*-解码程序- 结果:得到uchar型的键码ir_code,如果解码出错，则ir_code=0xff -*/ void get_code(void) uchar i,dat,/*键码*/_dat;/*键码反码*/ uint temp=0; for(i=0;i16;i+) if(arri7000) /“0” temp13000) /“1” temp8)&0x00ff);/*键码反码*/ /*“键码”与“键码反码相与，如果为0则解码正确*/ if(dat&_dat)=0) ir_code=dat; else TCNT1H = 0x00; TCNT1L = 0x00; ir_code=0xff;/解码出错 times=0; index=0; void init_devices(void) CLI(); port_init(); timer1_init(); MCUCR = 0x00; GICR = 0x00; TIMSK = 0x20; SEI(); void main(void) uchar i; init_devices(); while(1) if (OK_flag) get_code();/解码 OK_flag=0; for(i=0;i200;i+) dis_int(ir_code);/显示键码 /-楼主程序今测试了下: 主要有两点改动 用M64,T3,晶体7.3728 ,GCC 20040214 1 void timer1_init(void) TCCR3B = 0x00; /stop TCNT3H = 0x00; /setup TCNT3L = 0x00; ICR3H = 0x00; ICR3L = 0x08; TCCR3A = 0x00; /*一体化接收头的DATA引脚接到ATmega64的PE7(ICP3)引脚，采用上升沿捕捉的方法解码*/ /*晶振为7.3728M,8分频*/ TCCR1B = 0xC2; /start Timer 改动 2 SING(XXXXXXXXXXXXXXX) uint value; value=ICR3L; value|=(uint