shumaguan.rar_avr 动态数码管

/**********数码管************/ #include <avr/io.h> //#include <macros.h> #define uchar unsigned char #define uint unsigned int uchar table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d, 0x07, 0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; /* void delay(uint ms)//8m晶振1MS延时 { uint i,j; for(i=0;i<ms;i++) { for(j=0;j<1141;j++); } } */ void delay(uint ms)//16m晶振1MS延时 { uint i,j; for(i=0;i<ms;i++) { for(j=0;j<571;j++); } } int main(void) { // DDRA &= ~(1<<0); // PORTA |= (1<<0); // DDRA &= ~(1<<1); //PORTA |= (1<<1); // DDRA &= ~(1<<2); // PORTA |= (1<<2); //DDRA &= ~(1<<3); //PORTA |= (1<<3); // DDRD |= (1<<0); // PORTD |= (1<<0);//关蜂呜器 DDRB = 0xff; DDRA = 0xff; //DDRC |=0x1c; while(1) { uchar i,j; for(j=0;j<800;j++) { delay(2); for(i=0;i<8;i++) { PORTA=table[(i+j/100)%8+0]; //PORTB |=0xff; PORTB &= ~(1<<i); delay(0.5); PORTB |=0xff; // PORTB |=0xff; // // if(i==8) // i=0; } } } }