#include <SoftwareSerial.h>

bool started = false;
// rx_pin = 1; tx_pin = 2; rx is assigning input pin and tx assigns output pin
SoftwareSerial Serial (1, 2); 

void setup() {
  Serial.begin(9600); //standard serial setup
  //must set high time out because parseInt only waits 1s for input. This allows us to enter input at our pace
  Serial.setTimeout(10000000); 
  pinMode (4, OUTPUT); //mosfet_shutter = 3; //ATtiny45 PB3
  pinMode (3, OUTPUT); //mosfet_focus = 4; //ATtiny45 PB4
  Serial.println("Init");
}
void loop() {
  /*command to say that if the program hasnt started, listen for input s, which then starts the rest of the 
  code and we can input variables*/
    if (!started){
        if (Serial.read() == 's'){
          started = true;
        }
       //once s has been recieved and program starts, we enter this part of the code
      } else { 
        Serial.println("Enter Duration"); 
        //enter an unsigned long in milliseconds. Needs a letter (or non-number) to know the end of the integer
        unsigned long duration = Serial.parseInt(); 
        Serial.println(duration);
        Serial.println("Enter Interval");
        //enter an unsigned long in milliseconds. Needs a letter (or non-number) to know the end of the integer
        unsigned long interval = Serial.parseInt(); 
        Serial.println(interval);
        //putting runtime in terms of millis function which counts time passed since start of program
        unsigned long runtime = millis(); 
        //while the runtime is < the duration we entered, go through the loop of writing high and low
        while (millis() - runtime <= duration){ 
            digitalWrite (3, HIGH); //write shutter high (activates mosfet and shorts the circuit)
            delay(120); //short delay so that the interval can be .5 sec since 'interval' must be greater than delay
            digitalWrite (4, HIGH); //write focus high (activates mosfet and shorts the circuit)
            //put a delay between focus and shutter so that the camera has time to focus
            delay(120); //short delay so that the interval can be .5 sec
            digitalWrite (4, LOW);
            //digitalWrite (4, LOW); //write focus low (turns off mosfet)
            digitalWrite (3, LOW); //write shutter low
            //minus delay so time between photos is only the interval value we entered
            delay(interval-250);
        }
    }
}