10 Buttons Using 1 Interrupt

1const int commonPin = 2;
2const int buttonPins[] = {4,5,6,7,8,9,10,11,12,13};
3
4unsigned  long lastFire = 0;
5
6void setup() {
7  configureCommon(); // Setup pins for  interrupt
8
9  attachInterrupt(digitalPinToInterrupt(commonPin), pressInterrupt,  FALLING);
10
11  Serial.begin(9600);
12}
13
14void loop() {
15  // Empty!
16}
17
18void  pressInterrupt() { // ISR
19  if (millis() - lastFire < 200) { // Debounce
20    return;
21  }
22  lastFire = millis();
23
24  configureDistinct(); // Setup  pins for testing individual buttons
25
26  for (int i = 0; i < sizeof(buttonPins)  / sizeof(int); i++) { // Test each button for press
27    if (!digitalRead(buttonPins[i]))  {
28      press(i);
29    }
30  }
31
32  configureCommon(); // Return to original  state
33}
34
35void configureCommon() {
36  pinMode(commonPin, INPUT_PULLUP);
37
38  for (int i = 0; i < sizeof(buttonPins) / sizeof(int); i++) {
39    pinMode(buttonPins[i],  OUTPUT);
40    digitalWrite(buttonPins[i], LOW);
41  }
42}
43
44void configureDistinct()  {
45  pinMode(commonPin, OUTPUT);
46  digitalWrite(commonPin, LOW);
47
48  for  (int i = 0; i < sizeof(buttonPins) / sizeof(int); i++) {
49    pinMode(buttonPins[i],  INPUT_PULLUP);
50  }
51}
52
53void press(int button) { // Our handler
54  Serial.println(button  + 1);
55}

1#include <Servo.h>
2#include <avr/sleep.h>
3#include <avr/power.h>
4
5const  int commonPin = 2;
6const int buttonPins[] = {4,5,6,7,8,9,10,11,12,13};
7
8const  int servoEnablePin = A1;
9const int servoPin = A0;
10Servo servo;
11
12unsigned  long lastFire = 0;
13int status = 0;
14
15void setup() {
16  pinMode(commonPin,  INPUT_PULLUP);
17  
18  configureCommon();
19  
20  attachInterrupt(digitalPinToInterrupt(commonPin),  pressInterrupt, FALLING);
21
22  servo.attach(servoPin);
23  pinMode(servoEnablePin,  OUTPUT);
24}
25
26void loop() {
27  if (millis()-lastFire > 5000) {
28    digitalWrite(servoEnablePin,  LOW);
29    
30    set_sleep_mode(SLEEP_MODE_PWR_DOWN);
31    sleep_enable();  
32    sleep_mode();
33  }
34
35  delay(10);
36}
37
38void pressInterrupt()  {
39  sleep_disable();
40  power_all_enable();
41  
42  if (millis()-lastFire  < 200) {
43    return;
44  }
45  lastFire = millis();
46  
47  configureDistinct();
48
49  for (int i=0;i<sizeof(buttonPins)/sizeof(int);i++) {
50    if (!digitalRead(buttonPins[i]))  {
51      press(i);
52    }
53  }
54
55  configureCommon();
56}
57
58void  configureCommon() {
59  pinMode(commonPin, INPUT_PULLUP);
60  
61  for (int i=0;i<sizeof(buttonPins)/sizeof(int);i++)  {
62    pinMode(buttonPins[i], OUTPUT);
63    digitalWrite(buttonPins[i], LOW);
64  }
65}
66
67void configureDistinct() {
68  pinMode(commonPin, OUTPUT);
69  digitalWrite(commonPin, LOW);
70  
71  for (int i=0;i<sizeof(buttonPins)/sizeof(int);i++)  {
72    pinMode(buttonPins[i], INPUT_PULLUP);
73  }
74}
75
76void press(int  button) {
77  digitalWrite(servoEnablePin, HIGH);
78  servo.write(map(button,0,9,0,180));
79}

1const int commonPin = 2;
2const int buttonPins[] = {4,5,6,7,8,9,10,11,12,13};
3
4unsigned   long lastFire = 0;
5
6void setup() {
7  configureCommon(); // Setup pins for   interrupt
8
9  attachInterrupt(digitalPinToInterrupt(commonPin), pressInterrupt,   FALLING);
10
11  Serial.begin(9600);
12}
13
14void loop() {
15  // Empty!
16}
17
18void   pressInterrupt() { // ISR
19  if (millis() - lastFire < 200) { // Debounce
20     return;
21  }
22  lastFire = millis();
23
24  configureDistinct(); // Setup   pins for testing individual buttons
25
26  for (int i = 0; i < sizeof(buttonPins)   / sizeof(int); i++) { // Test each button for press
27    if (!digitalRead(buttonPins[i]))   {
28      press(i);
29    }
30  }
31
32  configureCommon(); // Return to original   state
33}
34
35void configureCommon() {
36  pinMode(commonPin, INPUT_PULLUP);
37
38   for (int i = 0; i < sizeof(buttonPins) / sizeof(int); i++) {
39    pinMode(buttonPins[i],   OUTPUT);
40    digitalWrite(buttonPins[i], LOW);
41  }
42}
43
44void configureDistinct()   {
45  pinMode(commonPin, OUTPUT);
46  digitalWrite(commonPin, LOW);
47
48  for   (int i = 0; i < sizeof(buttonPins) / sizeof(int); i++) {
49    pinMode(buttonPins[i],   INPUT_PULLUP);
50  }
51}
52
53void press(int button) { // Our handler
54  Serial.println(button   + 1);
55}

1#include <Servo.h>
2#include <avr/sleep.h>
3#include <avr/power.h>
4
5const   int commonPin = 2;
6const int buttonPins[] = {4,5,6,7,8,9,10,11,12,13};
7
8const   int servoEnablePin = A1;
9const int servoPin = A0;
10Servo servo;
11
12unsigned   long lastFire = 0;
13int status = 0;
14
15void setup() {
16  pinMode(commonPin,   INPUT_PULLUP);
17  
18  configureCommon();
19  
20  attachInterrupt(digitalPinToInterrupt(commonPin),   pressInterrupt, FALLING);
21
22  servo.attach(servoPin);
23  pinMode(servoEnablePin,   OUTPUT);
24}
25
26void loop() {
27  if (millis()-lastFire > 5000) {
28    digitalWrite(servoEnablePin,   LOW);
29    
30    set_sleep_mode(SLEEP_MODE_PWR_DOWN);
31    sleep_enable();   
32    sleep_mode();
33  }
34
35  delay(10);
36}
37
38void pressInterrupt()   {
39  sleep_disable();
40  power_all_enable();
41  
42  if (millis()-lastFire   < 200) {
43    return;
44  }
45  lastFire = millis();
46  
47  configureDistinct();
48
49   for (int i=0;i<sizeof(buttonPins)/sizeof(int);i++) {
50    if (!digitalRead(buttonPins[i]))   {
51      press(i);
52    }
53  }
54
55  configureCommon();
56}
57
58void   configureCommon() {
59  pinMode(commonPin, INPUT_PULLUP);
60  
61  for (int i=0;i<sizeof(buttonPins)/sizeof(int);i++)   {
62    pinMode(buttonPins[i], OUTPUT);
63    digitalWrite(buttonPins[i], LOW);
64   }
65}
66
67void configureDistinct() {
68  pinMode(commonPin, OUTPUT);
69   digitalWrite(commonPin, LOW);
70  
71  for (int i=0;i<sizeof(buttonPins)/sizeof(int);i++)   {
72    pinMode(buttonPins[i], INPUT_PULLUP);
73  }
74}
75
76void press(int   button) {
77  digitalWrite(servoEnablePin, HIGH);
78  servo.write(map(button,0,9,0,180));
79}