讨论详情 - Online Judge

机器人等级考试
四位数码管595显示4位数字
admin SU @ 2025-7-21 15:35:33

```arduino
const int dataPin = 9;    // 数据引脚 (DS)
const int clockPin = 10;   // 时钟引脚 (SH_CP)
const int latchPin = 11;    // 锁存引脚 (ST_CP)
const byte disNum[11] = {
  // 数码管各段状态定义（共阴极：1=亮，0=灭）
  //  abcdefgdp  
  0b11111100, //0
  0b01100000, //1
  0b11011010, //2
  0b11110010, //3
  0b01100110, //4
  0b10110110, //5
  0b10111110, //6
  0b11100000, //7
  0b11111110, //8
  0b11110110, //9
  0b00000001  //.
};

void setup() {
  // put your setup code here, to run once:
  pinMode(dataPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(latchPin, OUTPUT);
  byte duan = 0b10110110;//5  //0表示选中
  byte wei = 0b00000010;//位  1表示选中
  digitalWrite(clockPin, LOW);
  digitalWrite(latchPin, LOW);
}
void disPlayNumber(int n) { //1234
  byte wei = 0b00000001;
  int arr[5]={};
  int index = 5;
  while (n != 0) {
    index -= 1;
    arr[index] = n%10;
    n/=10;
  }
  for(int i=1;i<=4;i++){
    shiftOut(dataPin, clockPin, MSBFIRST, wei);
    shiftOut(dataPin, clockPin, LSBFIRST, ~disNum[arr[i]]);
    digitalWrite(latchPin, LOW);         // 开始传输
    digitalWrite(latchPin, HIGH);        // 锁存数据
    wei = (wei<<1);
  }
}
void loop() {
  // put your main code here, to run repeatedly:
  disPlayNumber(8);
}

admin SU @ 2025-7-21 15:52:14

admin SU @ 2025-7-21 15:51:39

const int dataPin = 9;    // 数据引脚 (DS)
const int clockPin = 10;   // 时钟引脚 (SH_CP)
const int latchPin = 11;    // 锁存引脚 (ST_CP)
const byte disNum[11] = {
  // 数码管各段状态定义（共阴极：1=亮，0=灭）
  //  abcdefgdp  
  0b11111100, //0
  0b01100000, //1
  0b11011010, //2
  0b11110010, //3
  0b01100110, //4
  0b10110110, //5
  0b10111110, //6
  0b11100000, //7
  0b11111110, //8
  0b11110110, //9
  0b00000001  //.
};

![](/file/2/LrLJDo8gHn3RfFFtOpa3B.png)


void setup() {
  // put your setup code here, to run once:
  pinMode(dataPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(latchPin, OUTPUT);
  byte duan = 0b10110110;//5  //0表示选中
  byte wei = 0b00000010;//位  1表示选中
  digitalWrite(clockPin, LOW);
  digitalWrite(latchPin, LOW);
}
void disPlayNumber(int digit,int number){
  byte v = 0b0;//
  //~bitClear(v,digit-1)
  shiftOut(dataPin, clockPin, MSBFIRST, bitSet(v,digit-1));
  shiftOut(dataPin, clockPin, LSBFIRST, ~disNum[number]);
  digitalWrite(latchPin, LOW);         // 开始传输
  digitalWrite(latchPin, HIGH);        // 锁存数据

}
void disPlayNumbers(int n){//1234
  int arr[5]={};
  arr[1] = n%10;//获取个位
  arr[2] = n/10%10;//获取十位
  arr[3] = n/100%10;
  arr[4] = n/1000%10;
  for(int i=1;i<=4;i++){
    disPlayNumber(4-i+1,arr[i]);
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  //disPlayNumber(4,8);
  disPlayNumbers(721);
}