main.ino

const int dischargePin = 10;  // Digital output pin for controlling transistor
const int voltagePin = A0;    // Analog input pin for measuring battery voltage

float dischargeCurrent = 0.80; // Specify the discharge current in amperes
int pulseDuration = 900000;     // Specify the pulse duration in milliseconds
bool dischargeComplete = false;  // Flag variable to track pulse discharge completion

void setup() {
  pinMode(dischargePin, OUTPUT);
  pinMode(voltagePin, INPUT);
  Serial.begin(9600); // Initialize serial communication
  Serial.print("start");
}

void loop() {
  unsigned long startTime = millis(); // Record start time
  int k = 1;
  dischargeComplete = false;
  
  // Run the discharge for the specified pulse duration
   while (millis() - startTime < pulseDuration && !dischargeComplete) {
    analogWrite(dischargePin, 255); // Set maximum PWM duty cycle to deliver maximum current

    int batteryVoltage = analogRead(voltagePin);
    float voltage = batteryVoltage * (5.0 / 1023.0); // Convert ADC value to voltage (assuming 5V Arduino)
    
    // Print voltage to Serial Monitor
    Serial.print(k);
    Serial.print(", ");
    Serial.print(voltage, 5);
    Serial.print("\n");
    k++;

    delay(1000); // Delay between voltage measurements
  }

  // Turn off the discharge after the specified pulse duration
  analogWrite(dischargePin, 0);
  dischargeComplete = true; // Set discharge complete flag

  // Measure battery voltage continuously until discharge is complete
  while (dischargeComplete) {
    // Measure battery voltage
    int batteryVoltage = analogRead(voltagePin);
    float voltage = batteryVoltage * (5.0 / 1023.0); // Convert ADC value to voltage (assuming 5V Arduino)
    
    // Print voltage to Serial Monitor
    Serial.print(k);
    Serial.print(", ");
    Serial.print(voltage, 5);
    Serial.print("\n");
    k ++;
    
    delay(1000);  // Delay between voltage measurements
  }
}

should ensure the discharge process runs for the specific pulse or until iot's manually stopped

fixed the while loops so i make sure to test it cuz i cant