//SN160 Phase 1 Crossing Signal Baseline
//Modified by Paul and David Bradt
//A sketch //using tone() function
//Code from
//https://www.programmingelectronics.com/an-easy-way-to-make-noise-with-arduino-using-tone/
//Specify digital pin on the Arduino that the positive lead of piezo buzzer is attached.
int piezoPin = 8;
#define LED_1 1
#define LED_2 2
void setup() {
pinMode(LED_1, OUTPUT); //Red LED 1
pinMode(LED_2, OUTPUT); //Red LED 2
}//close setup
void loop() {
/*Tone needs 2 arguments, but can take three
1) Pin#
2) Frequency - this is in hertz (cycles per second) which determines the pitch of the noise
made
3) Duration - how long the tone plays
*/
digitalWrite(LED_1, HIGH);
digitalWrite(LED_2, LOW);
delay(200); // wait for a .2 second
digitalWrite(LED_1, LOW);
digitalWrite(LED_2, HIGH);
// Section of code that simulates the crossing bell
tone(piezoPin, 1000, 100);
delay(200); //wait for 0.2 second then start again
}