Tambien me parece que es matar pulgas a cañonazos pero lo decia porque en este ejemplo de la biblioteca del tm1637 de grove se usa la biblioteca timer1:
/*
A library for the 4 digit display
Copyright (c) 2012 seeed technology inc.
Website : www.seeed.cc
Author : Frankie.Chu
Create Time: 9 April,2012
Change Log :
The MIT License (MIT)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
/*
example Requirement
Install libraries on Arduino Library Mnager.
TimerOne - maintained by Paul Stoffregen
*/
#include <TimerOne.h>
#include "TM1637.h"
#define ON 1
#define OFF 0
int8_t TimeDisp[] = {0x00, 0x00, 0x00, 0x00};
unsigned char ClockPoint = 1;
unsigned char Update;
unsigned char halfsecond = 0;
unsigned char second;
unsigned char minute = 0;
unsigned char hour = 12;
#define CLK 2//pins definitions for TM1637 and can be changed to other ports
#define DIO 3
TM1637 tm1637(CLK, DIO);
void setup() {
tm1637.set();
tm1637.init();
Timer1.initialize(500000);//timing for 500ms
Timer1.attachInterrupt(TimingISR);//declare the interrupt serve routine:TimingISR
}
void loop() {
if (Update == ON) {
TimeUpdate();
tm1637.display(TimeDisp);
}
}
void TimingISR() {
halfsecond ++;
Update = ON;
if (halfsecond == 2) {
second ++;
if (second == 60) {
minute ++;
if (minute == 60) {
hour ++;
if (hour == 24) {
hour = 0;
}
minute = 0;
}
second = 0;
}
halfsecond = 0;
}
// Serial.println(second);
ClockPoint = (~ClockPoint) & 0x01;
}
void TimeUpdate(void) {
if (ClockPoint) {
tm1637.point(POINT_ON);
} else {
tm1637.point(POINT_OFF);
}
TimeDisp[0] = hour / 10;
TimeDisp[1] = hour % 10;
TimeDisp[2] = minute / 10;
TimeDisp[3] = minute % 10;
Update = OFF;
}
Ah, y también si no es mucha molestia te puedo pedir que me expliques más el programa, y le encontré un error creo, si yo pongo los minutos en 10 y los segundos en 0 solo bajan los minutos. Tengo el programa así:
int segundos, horas, minutos;
unsigned long tp, atp;
void setup() {
Serial.begin(9600);
}
void loop() {
tp = (micros() - atp);
if ((unsigned long)(tp >= 1000000)) {
atp = micros();
if (segundos > 0) {
segundos--;
}
else {
if ((segundos == 0) && (minutos == 0) && (horas == 0)) {
}
segundos = 0;
if (minutos > 0) {
minutos--;
}
else {
minutos = 10;
if (horas > 0) {
horas--;
}
}
}
Serial.print(horas);
Serial.print(":");
Serial.print(minutos);
Serial.print(":");
Serial.println(segundos);
}
}
Siempre me olvido de aclarar algunas cosas. El tm1637 lo voy a usar para mostrar el tiempo de un partido de basquet, empieza el contador en los 10 minutos y cuando baja de 1 minuto, es decir empieza en 00:59 tiene que mostrar una decima, es decir 59:10.....59:09 y así.