biom.c

#include <Adafruit_Fingerprint.h>

const int led_pin_accept = 8;
const int led_pin_deny = 9;
volatile int finger_status = -1;
SoftwareSerial mySerial(2, 3); // TX/RX on fingerprint sensor
Adafruit_Fingerprint finger = Adafruit_Fingerprint( & mySerial);
void setup() {
  Serial.begin(9600);
  pinMode(led_pin_accept, OUTPUT);
  pinMode(led_pin_deny, OUTPUT);
  while (!Serial); // For Yun/Leo/Micro/Zero/...
  delay(100);
  Serial.println("\n\nAdafruit finger detect test"); // set the data rate for the sensor serial port
  finger.begin(57600);
  if (finger.verifyPassword()) {
    Serial.println("Found fingerprint sensor!");
  } else {
    Serial.println("Did not find fingerprint sensor :(");
    while (1) {
      delay(1);
    }
  }
  finger.getTemplateCount();
  Serial.print("Sensor contains ");
  Serial.print(finger.templateCount);
  Serial.println(" templates");
  Serial.println("Waiting for valid finger...");
}
void loop() // run over and over again
{
  finger_status = getFingerprintIDez();
  if (finger_status != -1 and finger_status != -2) {
    digitalWrite(led_pin_accept, HIGH);
    delay(1000);
  } else {
    if (finger_status == -2) {
      for (int ii = 0; ii < 5; ii++) {
        digitalWrite(led_pin_deny, HIGH);
        delay(50);
        digitalWrite(led_pin_deny, LOW);
        delay(50);
      }
    }
    digitalWrite(led_pin_accept, LOW);
  }
  delay(50); //don't ned to run this at full speed.
} // returns -1 if failed, otherwise returns ID# 
int getFingerprintIDez() {
  uint8_t p = finger.getImage();
  if (p != 2) {
    Serial.println(p);
  }
  if (p != FINGERPRINT_OK) return -1;
  p = finger.image2Tz();
  if (p != 2) {
    Serial.println(p);
  }
  if (p != FINGERPRINT_OK) return -1;
  p = finger.fingerFastSearch();
  if (p != FINGERPRINT_OK) return -2; // found a match!
  Serial.print("Found ID #");
  Serial.print(finger.fingerID);
  Serial.print(" with confidence of ");
  Serial.println(finger.confidence);
  return finger.fingerID;
}