fnd.c

uint8_t aFndData[16] = {0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7D, 0x27,
                        0x7F, 0x6F, 0x77, 0x7C, 0x39, 0x5E, 0x79, 0x71};
uint8_t aFndSelData[6] = {0x3E, 0x3D, 0x3B, 0x37, 0x2F, 0x1F};
                  
int aPinFndData[8] = {13, 12, 11, 10, 9, 8, 7, 6};
int aPinFndSel[6] = {5, 4, 3, 2, 1, 0};

void setup() {
  // put your setup code here, to run once:
  for(int i=0; i<8; i++) {
    pinMode(aPinFndData[i], OUTPUT);
  }
  for(int i=0; i<6; i++) {
    pinMode(aPinFndSel[i], OUTPUT);
  }
}

void loop() {
  int aFndNum[6] = {0, 1, 3, 5, 7, 9};
  for(int k=0; k<6; k++) {
    fndSelOut(aFndSelData[k]);
    fndDataOut(aFndData[aFndNum[k]]);
    delay(2);  
  }
}

void fndDataOut(uint8_t data) {
  for(int i=0; i<8; i++) {
    digitalWrite(aPinFndData[i], (data >> i) & 0x01);
  }
}

void fndSelOut(uint8_t data) {
  for(int i=0; i<6; i++) {
    digitalWrite(aPinFndSel[i], (data >> i) & 0x01);
  }
}