시리얼 모니터에 0~9까지의 숫자를 입력해서
7-segment에 출력하기
(BCD 디코더를 사용X)
int incomingByte = 0;
byte seven_seg_digits[10][7] = { { 0,0,0,0,0,0,1 }, // = 0
{ 1,0,0,1,1,1,1 }, // = 1
{ 0,0,1,0,0,1,0 }, // = 2
{ 0,0,0,0,1,1,0 }, // = 3
{ 1,0,0,1,1,0,0 }, // = 4
{ 0,1,0,0,1,0,0 }, // = 5
{ 0,1,0,0,0,0,0 }, // = 6
{ 0,0,0,1,1,1,1 }, // = 7
{ 0,0,0,0,0,0,0 }, // = 8
{ 0,0,0,1,1,0,0 } // = 9
};
void setup() {
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
writeDot(0); // start with the "dot" off
Serial.begin(9600);
}
void writeDot(byte dot) {
digitalWrite(9, dot);
}
void sevenSegWrite(byte digit) {
byte pin = 2;
for (byte segCount = 0; segCount < 7; ++segCount) {
digitalWrite(pin, seven_seg_digits[digit][segCount]);
++pin;
}
}
void loop() {
Serial.println("Press Number from 0 to 9");
while(1){
if(Serial.available() >0){
incomingByte = Serial.read();
Serial.print("I received : ");
Serial.println(incomingByte, DEC);
sevenSegWrite(incomingByte - 48);
}
}
}
