VFD(IV-18)を光らせる

vfd_emit.ino

const uint8_t sw_out = 9;
uint16_t target_value = 1023;
 
const uint8_t segments_pin[] = {0, 1, 2, 3, 4, 5, 6};
const uint8_t orders_pin[] = {A4, A3, A2, A1, 13, 12, 11, 10};
const uint8_t segments_count = 7;
const uint8_t orders_count = 8;
const uint8_t segment_data[] = {
  0b11111100,//0
  0b01100000,//1
  0b11011010,//2
  0b11110010,//3
  0b01100110,//4
  0b10110110,//5
  0b10111110,//6
  0b11100100,//7
  0b11111110,//8
  0b11110110,//9
  0b11101110,//A
  0b00111110,//b
  0b10011100,//C
  0b01111010,//d
  0b10011110,//E
  0b10001110,//F
};
uint8_t show_num[] = {0,1,2,3,4,5,6,7};

void setup() {
  pinMode(sw_out,OUTPUT);
  for(uint8_t i = 0 ; i < segments_count ; ++i){
    pinMode(segments_pin[i], OUTPUT);
    digitalWrite(segments_pin[i], LOW);
  }  
  for(uint8_t i = 0 ; i < orders_count ; ++i){
    pinMode(orders_pin[i], OUTPUT);
    digitalWrite(orders_pin[i], LOW);
  }  
}
 
void loop() {
  /* voltage boost */
  uint16_t data = analogRead(A0);
  uint8_t duty = (target_value < data) ? 0 : ((target_value - data) >> 2);
  analogWrite(sw_out, duty);
  /* VFD show */
  for(uint8_t i = 0 ; i < orders_count ; ++i){
    digitalWrite(orders_pin[i], LOW);
    for(uint8_t j = 0 ; j < segments_count ; ++j){
      digitalWrite(segments_pin[j],(segment_data[show_num[i]] << j) & 0x80);
    }
    digitalWrite(orders_pin[i], HIGH);
    delayMicroseconds(50000);//deadtime
    digitalWrite(orders_pin[i], LOW);
  }  
}