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arduino-cli/libraries/Adafruit_Fingerprint_Sensor_Library/examples/ledcontrol/ledcontrol.ino

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+/***************************************************
+  This is an example sketch for our optical Fingerprint sensor with LED ring
+
+  These displays use TTL Serial to communicate, 2 pins are required to
+  interface
+  Adafruit invests time and resources providing this open source code,
+  please support Adafruit and open-source hardware by purchasing
+  products from Adafruit!
+
+  Written by Limor Fried/Ladyada for Adafruit Industries.
+  BSD license, all text above must be included in any redistribution
+ ****************************************************/
+
+
+#include <Adafruit_Fingerprint.h>
+
+
+
+#if (defined(__AVR__) || defined(ESP8266)) && !defined(__AVR_ATmega2560__)
+// For UNO and others without hardware serial, we must use software serial...
+// pin #2 is IN from sensor (GREEN wire)
+// pin #3 is OUT from arduino  (WHITE wire)
+// Set up the serial port to use softwareserial..
+SoftwareSerial mySerial(2, 3);
+
+#else
+// On Leonardo/M0/etc, others with hardware serial, use hardware serial!
+// #0 is green wire, #1 is white
+#define mySerial Serial1
+
+#endif
+
+Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);
+
+void setup()
+{
+  Serial.begin(9600);
+  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);
+  delay(5);
+  if (finger.verifyPassword()) {
+    Serial.println("Found fingerprint sensor!");
+  } else {
+    Serial.println("Did not find fingerprint sensor :(");
+    while (1) { delay(1); }
+  }
+
+  Serial.println(F("Reading sensor parameters"));
+  finger.getParameters();
+  Serial.print(F("Status: 0x")); Serial.println(finger.status_reg, HEX);
+  Serial.print(F("Sys ID: 0x")); Serial.println(finger.system_id, HEX);
+  Serial.print(F("Capacity: ")); Serial.println(finger.capacity);
+  Serial.print(F("Security level: ")); Serial.println(finger.security_level);
+  Serial.print(F("Device address: ")); Serial.println(finger.device_addr, HEX);
+  Serial.print(F("Packet len: ")); Serial.println(finger.packet_len);
+  Serial.print(F("Baud rate: ")); Serial.println(finger.baud_rate);
+
+
+}
+
+void loop()                     // run over and over again
+{
+  // LED fully on
+  finger.LEDcontrol(FINGERPRINT_LED_ON, 0, FINGERPRINT_LED_RED);
+  delay(250);
+  finger.LEDcontrol(FINGERPRINT_LED_ON, 0, FINGERPRINT_LED_BLUE);
+  delay(250);
+  finger.LEDcontrol(FINGERPRINT_LED_ON, 0, FINGERPRINT_LED_PURPLE);
+  delay(250);
+
+  // flash red LED
+  finger.LEDcontrol(FINGERPRINT_LED_FLASHING, 25, FINGERPRINT_LED_RED, 10);
+  delay(2000);
+  // Breathe blue LED till we say to stop
+  finger.LEDcontrol(FINGERPRINT_LED_BREATHING, 100, FINGERPRINT_LED_BLUE);
+  delay(3000);
+  finger.LEDcontrol(FINGERPRINT_LED_GRADUAL_ON, 200, FINGERPRINT_LED_PURPLE);
+  delay(2000);
+  finger.LEDcontrol(FINGERPRINT_LED_GRADUAL_OFF, 200, FINGERPRINT_LED_PURPLE);
+  delay(2000);
+}