کد:
#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>
#define I2C_ADDR 0x27 //Define I2C Address where the PCF8574A is
#define BACKLIGHT_PIN 3
#define En_pin 2
#define Rw_pin 1
#define Rs_pin 0
#define D4_pin 4
#define D5_pin 5
#define D6_pin 6
#define D7_pin 7
//Initialize the LCD
LiquidCrystal_I2C lcd(I2C_ADDR, En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);
#define DS3231_I2C_ADDRESS 104 // RTC is connected, address is Hex68 (Decimal 104)
// SCL - pin A5
// SDA - pin A4
// To set the clock, run the sketch and use the serial monitor.
// Enter T1124154091014; the code will read this and set the clock. See the code for full details.
byte seconds, minutes, hours, day, date, month, year;
char weekDay[4];
byte tMSB, tLSB;
float my_temp;
char my_array[100]; // Character array for printing something.
//Mehdi aray LED
int timer = 50; // The higher the number, the slower the timing.
int ledPins[] = {
2,3,4,5,6,7,8,9,10,11
}; // an array of pin numbers to which LEDs are attached
int pinCount = 10; // the number of pins (i.e. the length of the array)
//Mehdi aray LED
void setup()
{
Wire.begin();
Serial.begin(9600);
lcd.begin (16,2); //Define the LCD as 16 column by 2 rows
lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
//lcd.setBacklight(HIGH); //Switch on the backlight
//lcd.setCursor(0,0); //goto first column (column 0) and first line (Line 0)
//Mehdi aray LED
// the array elements are numbered from 0 to (pinCount - 1).
// use a for loop to initialize each pin as an output:
for (int thisPin = 0; thisPin < pinCount; thisPin++) {
pinMode(ledPins[thisPin], OUTPUT);
}
//Mehdi aray LED
}
void loop()
{
watchConsole();
get3231Date();
//Serial.print(weekDay); Serial.print(", "); Serial.print(date, DEC); Serial.print("/"); Serial.print(month, DEC);
//Serial.print("/"); Serial.print(year, DEC); Serial.print(" - ");
//Serial.print(hours, DEC); Serial.print(":"); Serial.print(minutes, DEC); Serial.print(":"); Serial.print(seconds, DEC);
my_temp = (float)get3231Temp();
//Serial.println(" <== Time & date");
//Serial.print("Temperature : ");
//Serial.println(my_temp);
//Serial.println("...............");
// NOTE: Arduino does NOT implement printing floats to a string.
// If you use the std C function : sprintf(my_array, "Temp: %4.2f", my_temp), It will NOT CONVERT.
// So I abandoned this, since I don't need to print the float to the LCD anyway.
sprintf(my_array, "TIME: %d:%d:%d", hours, minutes, seconds);
// Print a message to the LCD.
lcd.backlight();
lcd.setCursor(0,0);
lcd.print(my_array);
lcd.setCursor(0,1);
lcd.print("TEMP: ");
lcd.setCursor(6,1);
lcd.print(my_temp);
lcd.setCursor(11,1);
lcd.print(" 'C");
//Mehdi aray LED
// loop from the lowest pin to the highest:
for (int thisPin = 0; thisPin < pinCount; thisPin++) {
// turn the pin on:
digitalWrite(ledPins[thisPin], HIGH);
delay(timer);
// turn the pin off:
digitalWrite(ledPins[thisPin], LOW);
}
// loop from the highest pin to the lowest:
for (int thisPin = pinCount - 1; thisPin >= 0; thisPin--) {
// turn the pin on:
digitalWrite(ledPins[thisPin], HIGH);
delay(timer);
// turn the pin off:
digitalWrite(ledPins[thisPin], LOW);
}
//Mehdi aray LED
}
// Convert normal decimal numbers to binary coded decimal
byte decToBcd(byte val)
{
return ( (val/10*16) + (val%10) );
}
void watchConsole()
{
if (Serial.available()) { // Look for char in serial queue and process if found
if (Serial.read() == 84) { //If command = "T" Set Date
set3231Date();
get3231Date();
Serial.println(" ");
}
}
}
void set3231Date()
{
//T(sec)(min)(hour)(dayOfWeek)(dayOfMonth)(month)(year)
//T(00-59)(00-59)(00-23)(1-7)(01-31)(01-12)(00-99)
//Example: 02-Feb-09 @ 19:57:11 for the 3rd day of the week -> T1157193020209
// T1124154091014
seconds = (byte) ((Serial.read() - 48) * 10 + (Serial.read() - 48)); // Use of (byte) type casting and ascii math to achieve result.
minutes = (byte) ((Serial.read() - 48) *10 + (Serial.read() - 48));
hours = (byte) ((Serial.read() - 48) *10 + (Serial.read() - 48));
day = (byte) (Serial.read() - 48);
date = (byte) ((Serial.read() - 48) *10 + (Serial.read() - 48));
month = (byte) ((Serial.read() - 48) *10 + (Serial.read() - 48));
year = (byte) ((Serial.read() - 48) *10 + (Serial.read() - 48));
Wire.beginTransmission(DS3231_I2C_ADDRESS);
Wire.write(0x00);
Wire.write(decToBcd(seconds));
Wire.write(decToBcd(minutes));
Wire.write(decToBcd(hours));
Wire.write(decToBcd(day));
Wire.write(decToBcd(date));
Wire.write(decToBcd(month));
Wire.write(decToBcd(year));
Wire.endTransmission();
}
void get3231Date()
{
// send request to receive data starting at register 0
Wire.beginTransmission(DS3231_I2C_ADDRESS); // 104 is DS3231 device address
Wire.write(0x00); // start at register 0
Wire.endTransmission();
Wire.requestFrom(DS3231_I2C_ADDRESS, 7); // request seven bytes
if(Wire.available()) {
seconds = Wire.read(); // get seconds
minutes = Wire.read(); // get minutes
hours = Wire.read(); // get hours
day = Wire.read();
date = Wire.read();
month = Wire.read(); //temp month
year = Wire.read();
seconds = (((seconds & B11110000)>>4)*10 + (seconds & B00001111)); // convert BCD to decimal
minutes = (((minutes & B11110000)>>4)*10 + (minutes & B00001111)); // convert BCD to decimal
hours = (((hours & B00110000)>>4)*10 + (hours & B00001111)); // convert BCD to decimal (assume 24 hour mode)
day = (day & B00000111); // 1-7
date = (((date & B00110000)>>4)*10 + (date & B00001111)); // 1-31
month = (((month & B00010000)>>4)*10 + (month & B00001111)); //msb7 is century overflow
year = (((year & B11110000)>>4)*10 + (year & B00001111));
}
else {
//oh noes, no data!
}
switch (day) {
case 1:
strcpy(weekDay, "Sun");
break;
case 2:
strcpy(weekDay, "Mon");
break;
case 3:
strcpy(weekDay, "Tue");
break;
case 4:
strcpy(weekDay, "Wed");
break;
case 5:
strcpy(weekDay, "Thu");
break;
case 6:
strcpy(weekDay, "Fri");
break;
case 7:
strcpy(weekDay, "Sat");
break;
}
}
float get3231Temp()
{
float temp3231;
//temp registers (11h-12h) get updated automatically every 64s
Wire.beginTransmission(DS3231_I2C_ADDRESS);
Wire.write(0x11);
Wire.endTransmission();
Wire.requestFrom(DS3231_I2C_ADDRESS, 2);
if(Wire.available()) {
tMSB = Wire.read(); //2's complement int portion
tLSB = Wire.read(); //fraction portion
temp3231 = (tMSB & B01111111); //do 2's math on Tmsb
temp3231 += ( (tLSB >> 6) * 0.25 ); //only care about bits 7 & 8
}
else {
//oh noes, no data!
}
return temp3231;
}
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