EEProm Menu recording

Projects Programming
1

Hello friends, I want to save the temperature setting I set with EEProm in the code below, can you help me?

#include

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(9, 8, 7, 6, 5, 4);

const int LED_RED=10; //Red LED
const int LED_GREEN=11; //Green LED
const int RELAY=12; //Lock Relay or motor

//Key connections with arduino
const int up_key=3;
const int down_key=2;

int SetPoint=30;
//=================================================================
// SETUP
//=================================================================
void setup(){
pinMode(LED_RED,OUTPUT);
pinMode(LED_GREEN,OUTPUT);
pinMode(RELAY,OUTPUT);
pinMode(up_key,INPUT);
pinMode(down_key,INPUT);

//Pull up for setpoint keys
digitalWrite(up_key,HIGH);
digitalWrite(down_key,HIGH);

// set up the LCD's number of columns and rows:
lcd.begin(16, 2);
// Print a message to the LCD.
lcd.print("EL Tronic");
lcd.setCursor(0,1); //Move coursor to second Line
lcd.print("Temp. Controller");
digitalWrite(LED_GREEN,HIGH); //Green LED Off
digitalWrite(LED_RED,LOW); //Red LED On
digitalWrite(RELAY,LOW); //Turn off Relay
delay(2000);
}
//=================================================================
// LOOP
//=================================================================
void loop(){
double Temperature = ((5.0/1024.0) * analogRead(A0)) * 100; //10mV per degree 0.01V/C. Scalling

lcd.setCursor(0,0);
lcd.print("Temperature:"); //Do not display entered keys
lcd.print(Temperature);

//Get user input for setpoints
if(digitalRead(down_key)==LOW)
{
if(SetPoint>0)
{
SetPoint--;
}
}
if(digitalRead(up_key)==LOW)
{
if(SetPoint<150)
{
SetPoint++;
}
}

//Display Set point on LCD
lcd.setCursor(0,1);
lcd.print("Set Point:");
lcd.print(SetPoint);
lcd.print("C ");

//Check Temperature is in limit
if(Temperature > SetPoint)
{
digitalWrite(RELAY,LOW); //Turn off heater
digitalWrite(LED_RED,LOW);
digitalWrite(LED_GREEN,HIGH); //Turn on Green LED
}
else
{
digitalWrite(RELAY,HIGH); //Turn on heater
digitalWrite(LED_GREEN,LOW);
digitalWrite(LED_RED,HIGH); //Turn on RED LED
}

delay(100); //Update at every 100mSeconds
}
2

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Please follow the advice given in the link below when posting code, in particular the section entitled 'Posting code and common code problems'

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1 Like
3

Have you looked at the examples that come with the EEPROM library ?

Which Arduino board are you using ?

4

Sorry, I'm new to Arduino, I'm using Arduino uno, can you help me how to add a record to the code here, thank you.

5

As I said

1 Like
6

I looked but I couldn't understand much because I'm a newbie. I would be very happy if you could help me. I don't know where to write the code. I would appreciate it if you could write it.

9

I could write it but you will learn more by writing it yourself

Look at this commented example

#include <EEPROM.h>  //include the library

void setup()
{
    Serial.begin(115200);
    int address = 0;             //EEPROM address to sav the value
    int value;                   //variable to hold a 2 byte int value
    EEPROM.get(address, value);  //get the previous value from EEPROM
    Serial.print("Previous value from EEPROM = ");
    Serial.println(value);
    value++;                     //increment value
    EEPROM.put(address, value);  //put the new value in EEPROM
}

void loop()
{
}

Which part of it do you not understand ?

1 Like
10

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