/*
* Copyright (C) 2022, Andrei Egorov
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
byte digit[]={0B11000000, 0B11111001, 0B10100100, 0B10110000, 0B10011001,
0B10010010, 0B10000010, 0B11111000, 0B10000000, 0B10010000};
byte d[]={0,0,0,0};
int ms=0;
void setup() {
DDRB=0x0F;
DDRD=0xFF;
pinMode(13, OUTPUT);
;}
void loop() {
static uint32_t m=millis();
static uint32_t m1=millis();
if ((millis()-m1)>=500) {
m1+=500;
digitalWrite(13,!digitalRead(13));
}
if ((millis()-m)>=1000) {
m+=1000;
ms++;
d[0]=ms/1000;
d[1]=ms%1000/100;
d[2]=ms%100/10;
d[3]=ms%10;
}
for (byte i=0,j=1;i<=3;i++) {
PORTD=digit[d[i]];
PINB=j;
delay(5);
PINB=j;
j<<=1;
}
}