Rotary Controlled LED Row

1// Define Pins
2#define CLK 2
3#define DT  3
4#define SW  4
5
6#define  LED1 9
7#define LED2 10
8#define LED3 11
9#define LED4 12
10#define LED5  13
11#define LED6 14//Analog 0/A0
12#define LED7 15//Analog 1/A1
13#define LED8  16//Analog 2/A2
14#define LED9 17//Analog 3/A3
15#define LED10 18//Analog 4/A4
16
17const  int interrupt0 = 0;// Interrupt 0 在 pin 2 上
18int count = 0;//Define the count
19int  lastCLK = 0;//CLK initial value
20 
21void setup()
22{
23  pinMode(SW, INPUT);
24  digitalWrite(SW, HIGH);
25  pinMode(CLK, INPUT);
26  pinMode(DT, INPUT);
27  attachInterrupt(interrupt0, ClockChanged, CHANGE);//Set the interrupt 0 handler,  trigger level change
28
29  pinMode(LED1, OUTPUT);
30  pinMode(LED2, OUTPUT);
31  pinMode(LED3, OUTPUT);
32  pinMode(LED4, OUTPUT);
33  pinMode(LED5, OUTPUT);
34  pinMode(LED6, OUTPUT);
35  pinMode(LED7, OUTPUT);
36  pinMode(LED8, OUTPUT);
37  pinMode(LED9, OUTPUT);
38  pinMode(LED10, OUTPUT);
39  
40  Serial.begin(9600);
41}
42  
43void loop()
44{
45  if (!digitalRead(SW) && count != 0) //Read the button  press and the count value to 0 when the counter reset
46  {
47    count = 0;
48    Serial.print("count:");
49    Serial.println(count);
50  }
51}
52
53void  LedOutput(int value) 
54{
55  // Turn off all LEDs
56  digitalWrite(LED1, LOW);
57  digitalWrite(LED2, LOW);
58  digitalWrite(LED3, LOW);
59  digitalWrite(LED4,  LOW);
60  digitalWrite(LED5, LOW);
61  digitalWrite(LED6, LOW);
62  digitalWrite(LED7,  LOW);
63  digitalWrite(LED8, LOW);
64  digitalWrite(LED9, LOW);
65  digitalWrite(LED10,  LOW);
66
67  // If encoder value is between 1-10, light up appropriate
68  //  number of LEDs
69  if (value >= 1 || value <= 10) {
70    switch(value) {
71      case 1: 
72        digitalWrite(LED1, HIGH);
73        break;
74      case  2:
75        digitalWrite(LED1, HIGH);
76        digitalWrite(LED2, HIGH);
77        break;
78      case 3:
79        digitalWrite(LED1, HIGH);
80        digitalWrite(LED2,  HIGH);
81        digitalWrite(LED3, HIGH);
82        break;
83      case 4:
84        digitalWrite(LED1, HIGH);
85        digitalWrite(LED2, HIGH);
86        digitalWrite(LED3,  HIGH);
87        digitalWrite(LED4, HIGH);
88        break;
89     case 5:
90        digitalWrite(LED1, HIGH);
91        digitalWrite(LED2, HIGH);
92        digitalWrite(LED3,  HIGH);
93        digitalWrite(LED4, HIGH);
94        digitalWrite(LED5, HIGH);
95        break;
96      case 6:
97        digitalWrite(LED1, HIGH);
98        digitalWrite(LED2,  HIGH);
99        digitalWrite(LED3, HIGH);
100        digitalWrite(LED4, HIGH);
101        digitalWrite(LED5, HIGH);
102        digitalWrite(LED6, HIGH);
103        break;
104      case 7:
105        digitalWrite(LED1, HIGH);
106        digitalWrite(LED2,  HIGH);
107        digitalWrite(LED3, HIGH);
108        digitalWrite(LED4, HIGH);
109        digitalWrite(LED5, HIGH);
110        digitalWrite(LED6, HIGH);
111        digitalWrite(LED7,  HIGH);
112        break;
113      case 8:
114        digitalWrite(LED1, HIGH);
115        digitalWrite(LED2, HIGH);
116        digitalWrite(LED3, HIGH);
117        digitalWrite(LED4,  HIGH);
118        digitalWrite(LED5, HIGH);
119        digitalWrite(LED6, HIGH);
120        digitalWrite(LED7, HIGH);
121        digitalWrite(LED8, HIGH);
122        break;
123      case 9:
124        digitalWrite(LED1, HIGH);
125        digitalWrite(LED2,  HIGH);
126        digitalWrite(LED3, HIGH);
127        digitalWrite(LED4, HIGH);
128        digitalWrite(LED5, HIGH);
129        digitalWrite(LED6, HIGH);
130        digitalWrite(LED7,  HIGH);
131        digitalWrite(LED8, HIGH);
132        digitalWrite(LED9, HIGH);      
133        break;   
134      case 10:
135        digitalWrite(LED1, HIGH);
136        digitalWrite(LED2, HIGH);
137        digitalWrite(LED3, HIGH);
138        digitalWrite(LED4,  HIGH);
139        digitalWrite(LED5, HIGH);
140        digitalWrite(LED6, HIGH);
141        digitalWrite(LED7, HIGH);
142        digitalWrite(LED8, HIGH);
143        digitalWrite(LED9,  HIGH);     
144        digitalWrite(LED10, HIGH);        
145        break;           
146    }
147  }
148}
149
150//The interrupt handlers
151void ClockChanged()
152{
153  int clkValue = digitalRead(CLK);//Read the CLK pin level
154  int dtValue = digitalRead(DT);//Read  the DT pin level
155  if (lastCLK != clkValue)
156  {
157    lastCLK = clkValue;
158    count += (clkValue != dtValue ? 1 : -1);//CLK and inconsistent DT + 1, otherwise  - 1
159
160    Serial.print("count:");
161    Serial.println(count);
162    LedOutput(count);
163  }
164}