Created
January 6, 2016 16:25
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2 進数カウンター
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| const int LED4 = 13; | |
| const int LED3 = 12; | |
| const int LED2 = 11; | |
| const int LED1 = 10; | |
| const int BTN1 = 7; | |
| int old_input = LOW; | |
| int new_input = LOW; | |
| int count = 0; | |
| void setup() { | |
| pinMode(LED4, OUTPUT); | |
| pinMode(LED3, OUTPUT); | |
| pinMode(LED2, OUTPUT); | |
| pinMode(LED1, OUTPUT); | |
| pinMode(BTN1, INPUT); | |
| // Serial.begin(38400); | |
| } | |
| void loop() { | |
| digitalWrite(LED4, LOW); | |
| digitalWrite(LED3, LOW); | |
| digitalWrite(LED2, LOW); | |
| digitalWrite(LED1, LOW); | |
| new_input = digitalRead(BTN1); | |
| if ((old_input == LOW) && (new_input == HIGH)) { | |
| count++; | |
| delay(10); // デバウンシング | |
| // Serial.println(count); | |
| } | |
| // & : マスク (AND) | |
| if ((count & 8) == 8) { | |
| digitalWrite(LED4, HIGH); | |
| } | |
| if ((count & 4) == 4) { | |
| digitalWrite(LED3, HIGH); | |
| } | |
| if ((count & 2) == 2) { | |
| digitalWrite(LED2, HIGH); | |
| } | |
| if ((count & 1) == 1) { | |
| digitalWrite(LED1, HIGH); | |
| } | |
| old_input = new_input; | |
| } |
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