Editorial Solution

From the task, we can understand that we have to keep track of the number of times the microcontroller(in our case Arduino UNO) is restarted.
Since we have to store the value we have multiple storage options, such as flash, RAM, EEPROM, etc.
Out of these EEPROM will keep the value even if the controller gets reset/powered off.
- We can also use ROM (program memory) in some controllers to write, however, it has very much fewer writing cycles than EEPROM, also writing to ROM is risky & complex as well.
- So we have only the option of EEPROM and EEPROM is made for handling such cases.
At every startup of the microcontroller, we can program it in such a way that it will fetch the “Reset Count Value” from the EEPROM, increase it by one, and store it back in the same EEPROM location.
We will print the value on the serial monitor and also give the user the option to either reset the counter or not.
Based on the option selected by the user we can act accordingly.

Code

#include <EEPROM.h>


#define RESTART_COUNT_ADDR 0     // Address in EEPROM for restart count


void setup() {
  Serial.begin(9600);
  while (!Serial);


  Serial.println("EEPROM-Based Microcontroller Restart Counter");


  // Increment and read the restart counter
  int restartCount;
  EEPROM.get(RESTART_COUNT_ADDR, restartCount);
  restartCount++;
  EEPROM.put(RESTART_COUNT_ADDR, restartCount);


  Serial.print("Microcontroller restarted ");
  Serial.print(restartCount);
  Serial.println(" times.");


  // Provide option to reset the counter
  Serial.println("Do you want to reset the counter. Press Y or N");
  while(1)
  {
    if (Serial.available()) {
    char input = Serial.read();
    if (input == 'Y' || input == 'y') {
      Serial.println("Resetting restart counter...");
      EEPROM.put(RESTART_COUNT_ADDR, 0);
      Serial.println("Restart counter reset. Please restart the microcontroller.");
      break;
    }
    else{
      Serial.println("Counter not resetted");
      break;
    }
   
  }
  }
}


void loop() {
  Serial.println("Doing some task.......");
  delay(5000);
}

Code explanation

Read, Increment, and Store Restart Count:

Use EEPROM.get() to read the current value from the defined address.
Increment the value and write it back to EEPROM using EEPROM.put().

int restartCount;
EEPROM.get(RESTART_COUNT_ADDR, restartCount); // Read current value
restartCount++;
EEPROM.put(RESTART_COUNT_ADDR, restartCount); // Write updated value
Serial.print("Microcontroller restarted ");
Serial.print(restartCount);
Serial.println(" times.");

User Option to Reset Counter:

Prompt the user via Serial Monitor.
Wait for input (Y/y to reset, anything else to continue).

Serial.println("Do you want to reset the counter? Press Y or N");
while (1) {
  if (Serial.available()) {
    char input = Serial.read();
    if (input == 'Y' || input == 'y') {
      Serial.println("Resetting restart counter...");
      EEPROM.put(RESTART_COUNT_ADDR, 0); // Reset counter
      Serial.println("Restart counter reset. Please restart the microcontroller.");
      break;
    } else {
      Serial.println("Counter not reset.");
      break;
    }
  }
}

Caution

Keep in mind the limited write cycle with the EEPROM cell.

Also, it is advisable to reset the EEPROM beforehand.

Output

Output Video

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