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1 | #include <NewPing.h> | |
2 | #include <NewTone.h> | |
3 | ||
4 | // Select which PWM-capable pins are to be used. | |
5 | #define RED_PIN 10 | |
6 | #define GREEN_PIN 11 | |
7 | #define BLUE_PIN 9 | |
8 | ||
9 | #define TRIGGER_PIN 6 // Arduino pin tied to trigger pin on the ultrasonic sensor. | |
10 | #define ECHO_PIN 7 // Arduino pin tied to echo pin on the ultrasonic sensor. | |
11 | #define MAX_DISTANCE 200 // Maximum distance we want to ping for (in centimeters). | |
12 | ||
13 | NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // NewPing setup of pins and maximum distance. | |
14 | boolean triggered = false; | |
15 | ||
16 | ||
17 | #define ALARM 3 | |
18 | float sinVal; | |
19 | int toneVal; | |
20 | ||
21 | void setup(){ | |
22 | ||
23 | //set pinModes for RGB strip | |
24 | pinMode(RED_PIN,OUTPUT); | |
25 | pinMode(BLUE_PIN,OUTPUT); | |
26 | pinMode(GREEN_PIN,OUTPUT); | |
27 | ||
28 | pinMode(ALARM, OUTPUT); | |
29 | ||
30 | //reset lights | |
31 | analogWrite(RED_PIN,0); | |
32 | analogWrite(BLUE_PIN,0); | |
33 | analogWrite(RED_PIN,0); | |
34 | ||
35 | delay(5000); | |
36 | Serial.begin(115200); // Open serial monitor at 115200 baud to see ping results. | |
37 | ||
38 | ||
39 | } | |
40 | ||
41 | void loop(){ | |
42 | if(triggered == true){ | |
43 | alarm(); | |
44 | } | |
45 | else{ | |
46 | delay(50);// Wait 50ms between pings (about 20 pings/sec). 29ms should be the shortest delay between pings. | |
47 | unsigned int uS = sonar.ping(); // Send ping, get ping time in microseconds (uS). | |
48 | unsigned int distance = uS / US_ROUNDTRIP_CM; | |
49 | Serial.println(distance); | |
50 | if(distance < 50){ | |
51 | triggered = true; | |
52 | } | |
53 | } | |
54 | } | |
55 | ||
56 | void alarm(){ | |
57 | color(255,0,0); //red | |
58 | delay(100); | |
59 | color(255,255,0); //yelow | |
60 | delay(100); | |
61 | ||
62 | for (int x=0; x<180; x++) { | |
63 | // convert degrees to radians then obtain sin value | |
64 | sinVal = (sin(x*(3.1412/180))); | |
65 | // generate a frequency from the sin value | |
66 | toneVal = 2000+(int(sinVal*1000)); | |
67 | NewTone(ALARM, toneVal); | |
68 | } | |
69 | } | |
70 | ||
71 | //helper function enabling us to send a colour in one command | |
72 | void color (unsigned char red, unsigned char green, unsigned char blue) // the color generating function | |
73 | { | |
74 | analogWrite(RED_PIN, red); | |
75 | analogWrite(BLUE_PIN, blue); | |
76 | analogWrite(GREEN_PIN, green); | |
77 | } |