# define alarmPin   7
# define buzzerPin  6

void setup() {
  Serial.begin(115200);
  Serial.println("hello there!\n");

  pinMode(alarmPin, INPUT_PULLUP);
  pinMode(buzzerPin, OUTPUT);
}

void loop()
{
  check_alarm_condition(!digitalRead(alarmPin));
  delay(500);
}

# define ALARM  5000

void check_alarm_condition(int alarm_condition) {
    static unsigned long start_time;
    static int alarm_raised;
    unsigned long current_time;

    if (alarm_condition) {
        if (start_time == 0) {
            start_time = millis();  // Initialize start_time if it has not been set yet
        }

        current_time = millis();
        if ((current_time - start_time) > ALARM && !alarm_raised) {  // 60000 milliseconds is equal to 10 minutes
            printf("Alarm condition has been true for 10 minutes\n");
            turnOnBuzzer();  // Turn on the buzzer
            alarm_raised = 1;  // Set the flag to indicate that the alarm has been raised
        }
    } else {
        start_time = 0;  // Reset start_time if the alarm condition is no longer true
        alarm_raised = 0;  // Reset the flag if the alarm condition is no longer true
        turnOffBuzzer();  // Turn off the buzzer
    }
}
// # include <stdint.h>

void checkAlarmCondition(int alarmCondition)
{
    static uint32_t startTime;
    static int alarmRaised;
    uint32_t currentTime;

    if (alarmCondition && startTime == 0)
        startTime = millis();  // Initialize startTime if it has not been set yet
        
    currentTime = millis();
    
    if ((currentTime - startTime) > 3000) {  // 60000 milliseconds is equal to 10 minutes
      if (!alarmRaised) {
        Serial.print("Alarm condition has been true for 10 minutes\n");
        turnOnBuzzer();  // Turn on the buzzer
        alarmRaised = 1;  // Set the flag to indicate that the alarm has been raised
      }
    }
    else {
        startTime = 0;  // Reset startTime if the alarm condition is no longer true
        alarmRaised = 0;  // Reset the flag if the alarm condition is no longer true
        turnOffBuzzer();  // Turn off the buzzer
    }
}


void turnOffBuzzer()
{
  Serial.print("            and OFF\n");
  digitalWrite(buzzerPin, LOW);
}

void turnOnBuzzer()
{
  Serial.print("Alarm is ON.\n");
  digitalWrite(buzzerPin, HIGH);
}


long  in;
long  out;

long myMap(long x, long in_min, long in_max, long out_min, long out_max) {
  return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}

void loop0() {

  in =  40000L;

  Serial.print("total seconds in ");
  Serial.println(in);

  out = myMap( in, 0, 86400, 0, 65535);

  Serial.print("after map 1 ");
  Serial.println(out);

  out  = myMap(out, 0, 65535, 0, 86400);

  Serial.print("after map 2 ");
  Serial.println(out);

  for (;;);  // or just put the code in setup();
}