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AVR单片机对数码管数据P0口与P2口的控制设计资料下载
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2021-04-11
贾桂林
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//数码管数据P0口，数码管控制P2口#include#include#include#include#include#define code PROGMEM#define uchar unsigned char#define uint unsigned intcode const ucharLED_7［16］ = {0x28， 0x7E， 0xA2， 0x62， 0x74， 0x61， 0x21， 0x7A， 0x20， 0x60，0xff};//common of +code const uchar position［8］ = {0x7f，0xbf，0xdf，0xef，0xf7，0xfb，0xfd，0xfe};ucharTIme［4］; //时间计数volaTIle uchar disp_buff［8］; //显示缓冲区volaTIle ucharTIme_count = 0;volatile uchar point_on = 0;volatile uchar posit = 0;volatile uchar time_10ms_ok = 0;void time_to_dispbuff（void）;void time1_init（void）;void time0_init（void）;void display（void）;int main（void）{PORTA = 0xff;DDRA = 0xff;PORTC = 0xff;DDRC = 0xff;time［0］ = 00;//1/10sectime［1］ = 30;//sectime［2］ = 59;//minutetime［3］ = 23;//hourtime_to_dispbuff（）;time1_init（）;sei（）;while（1）{if（time_10ms_ok）{time_10ms_ok = 0;if（++time［0］》=100）{time［0］ = 0;point_on = ~point_on;if（++time［1］》=60）{time［1］ = 0;if（++time［2］》=60）{time［2］ = 0;if（++time［3］》=24）{time［3］ = 0;}}}}time_to_dispbuff（）;}}}void time0_init（void）{TCCR0 = 0x05;TCNT0 = 0xea;TIFR |= 0x02;TIMSK |= 0x02;}void time1_init（void）{TCCR1A = 0x00;TCCR1B = 0x01;TCNT1 = 0xa99a;//TCNT1H = 0xa9;//TCNT1L = 0x9a;TIFR |= 0x80;TIMSK |= 0x80;}SIGNAL（SIG_OVERFLOW1）{TCNT1 = 0xa99a;display（）;if（++time_count 》=5）{time_10ms_ok = 1;time_count = 0;}}void display（void）{PORTC = 0xff;PORTA = pgm_read_byte（&led_7［disp_buff［posit］］）;if（point_on && （（posit==2）||（posit==4）||（posit==6）））PORTA &= 0x7f;PORTC = pgm_read_byte（&position［posit］）;if（++posit》=8）posit = 0;}void time_to_dispbuff（void）{uchar i，j=0;for（i=0;i《=3;i++）{
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