#include "Wire.h"
#define DS1307_I2C_ADDRESS 0x68
int* ano,i;
char* myStrings[]={"Segunda-Feira", "Terca-Feira", "Quarta-Feira","Quinta-Feira", "Sexta-Feira","Sabado","Domingo"};
int tempc = 0,tempf=0; // temperature variables
int samples[8]; // variables to make a better precision
int maxi = -100,mini = 100; // to start max/min temperature
// Convert normal decimal numbers to binary coded decimal
byte decToBcd(byte val)
{
return ( (val/10*16) + (val%10) );
}
// Convert binary coded decimal to normal decimal numbers
byte bcdToDec(byte val)
{
return ( (val/16*10) + (val%16) );
}
// Stops the DS1307, but it has the side effect of setting seconds to 0
// Probably only want to use this for testing
/*void stopDs1307()
{
Wire.beginTransmission(DS1307_I2C_ADDRESS);
Wire.send(0);
Wire.send(0x80);
Wire.endTransmission();
}*/
// 1) Sets the date and time on the ds1307
// 2) Starts the clock
// 3) Sets hour mode to 24 hour clock
// Assumes you're passing in valid numbers
void setDateDs1307(byte second, // 0-59
byte minute, // 0-59
byte hour, // 1-23
byte dayOfWeek, // 1-7
byte dayOfMonth, // 1-28/29/30/31
byte month, // 1-12
byte year) // 0-99
{
Wire.beginTransmission(DS1307_I2C_ADDRESS);
Wire.send(0);
Wire.send(decToBcd(second)); // 0 to bit 7 starts the clock
Wire.send(decToBcd(minute));
Wire.send(decToBcd(hour)); // If you want 12 hour am/pm you need to set
// bit 6 (also need to change readDateDs1307)
Wire.send(decToBcd(dayOfWeek));
Wire.send(decToBcd(dayOfMonth));
Wire.send(decToBcd(month));
Wire.send(decToBcd(year));
Wire.endTransmission();
}
// Gets the date and time from the ds1307
void getDateDs1307(byte *second,
byte *minute,
byte *hour,
byte *dayOfWeek,
byte *dayOfMonth,
byte *month,
byte *year)
{
// Reset the register pointer
Wire.beginTransmission(DS1307_I2C_ADDRESS);
Wire.send(0);
Wire.endTransmission();
Wire.requestFrom(DS1307_I2C_ADDRESS, 7);
// A few of these need masks because certain bits are control bits
*second = bcdToDec(Wire.receive() & 0x7f);
*minute = bcdToDec(Wire.receive());
*hour = bcdToDec(Wire.receive() & 0x3f); // Need to change this if 12 hour am/pm
*dayOfWeek = bcdToDec(Wire.receive());
*dayOfMonth = bcdToDec(Wire.receive());
*month = bcdToDec(Wire.receive());
*year = bcdToDec(Wire.receive());
}
void setup()
{
byte second, minute, hour, dayOfWeek, dayOfMonth, month, year;
Wire.begin();
Serial.begin(9600);
// Change these values to what you want to set your clock to.
// You probably only want to set your clock once and then remove
// the setDateDs1307 call.
second = 40;
minute = 45;
hour = 10;
dayOfWeek = 6;
dayOfMonth = 1;
month = 8;
year = 9;
setDateDs1307(second, minute, hour, dayOfWeek, dayOfMonth, month, year);
}
void loop()
{
byte second, minute, hour, dayOfWeek, dayOfMonth, month, year;
getDateDs1307(&second, &minute, &hour, &dayOfWeek, &dayOfMonth, &month, &year);
ano = 2000 + year; // Changed to a int so it can show the year in 20XX style
for(i = 0;i< =7;i++){ // gets 8 samples of temperature
samples[i] = ( 5 * analogRead(0) * 100) / 1024;
tempc = tempc + samples[i];
delay(50);
}
tempc = tempc/8; // better precision
tempf = (tempc * 9)/ 5 + 32; // converts to fahrenheit
if(tempc > maxi) {maxi = tempc;} // set max temperature
if(tempc < mini) {mini = tempc;} // set min temperature
if(hour<10) {Serial.print("0");}
Serial.print(hour, DEC);
Serial.print(":");
if(minute<10) {Serial.print("0");}
Serial.print(minute, DEC);
Serial.print(":");
if(second<10) {Serial.print("0");}
Serial.print(second, DEC);
Serial.print(" ");
if(dayOfMonth<10) {Serial.print("0");}
Serial.print(dayOfMonth, DEC);
Serial.print("/");
if(month<10) {Serial.print("0");}
Serial.print(month, DEC);
Serial.print("/");
Serial.print(ano, DEC);
Serial.print(" Dia da semana: ");
Serial.print(myStrings[dayOfWeek-1]);
Serial.print(" - Temperatura:a: ");
Serial.print(tempc,DEC);
Serial.print("C , ");
Serial.print(tempf,DEC);
Serial.print("F - ");
Serial.print(maxi,DEC);
Serial.print(" Max, ");
Serial.print(mini,DEC);
Serial.println(" Min");
tempc = 0;
delay(600);
}