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Arduino使用红外遥控控制8×8点阵显示

8×8点阵简介

查看往期文章——Arduino控制8×8点阵显示中的相关介绍

红外接收模块

红外接收模块

引脚：IN、VCC、GND

红外遥控器

红外遥控器

连接线路图

使用引脚数量为16个，所以需要占用开发板16个引脚。考虑到使用的开发板只有14个数字引脚，6个模拟引脚，所以这里将模拟引脚做数字引脚使用。使用的数字引脚为编号2 ~ 13，模拟引脚为A0 ~ A3。

连接电路图时为避免线路缠绕，采用按顺序一次连接引脚的方式。点阵1~16引脚分别对应开发板的10，11，12，13，A3，A2，A1，A0，2，3，4，5，6，7，8，9。连接时考虑到保护点阵，在各个引脚进线处增加了电阻。

线路图

编写控制程序

  • 理清引脚-编号关系，列表查看如下：

image.png

|点阵列编号|1|2|3|4|5|6|7|8| |-|-|-|-|-|-|-|-|-|-| |点阵引脚|13|3|4|10|6|11|15|16| |开发板引脚|6|A2|A3|3|12|4|8|9| |点阵行编号|1|2|3|4|5|6|7|8| |点阵引脚|9|14|8|12|1|7|2||5| |开发板引脚|2|7|10|5|A0|11|A1|13|

因此定义控制点阵列引脚数组：

//Col : 13,3,4,10,6,11,15,16(点阵引脚)
int colPin[]= {6,A2,A3,3,12,4,8,9}; //pin
C++

定义控制点阵行引脚数组：

//Row : 9,14,8,12,1,7,2,5(点阵引脚)
int rowPin[]= {2,7,10,5,A0,11,A1,13}; //pin
C++

编写程序如下：

在setup()中:

  • 启动串口通讯：
  Serial.begin(9600); 
C++
  • 设置所有引脚为输出模式：
for(int i=0;i<8;i++){
    pinMode(colPin[i],OUTPUT);//设置输出
    pinMode(rowPin[i],OUTPUT);//设置输出
  }
C++
  • 调用reset()实现点阵显示清空，reset()定义如下：
void reset(){
  for(int i=0;i<8;i++){
    digitalWrite(colPin[i],LOW);
    digitalWrite(rowPin[i],HIGH);
  }
}
C++

此外，需要定义一些函数：

  • 定义显示函数showChar()，用于使点阵显示相应字符：
void showChar(int data[8][8]){
  for(int i=0;i<100;i++){
    for(int row=0;row<8;row++){
      digitalWrite(rowPin[row],LOW);
      for(int col=0;col<8;col++){
        digitalWrite(colPin[col],data[row][col]);
      }
      delay(1);
      reset();
    }
  }
  delay(1000);
}
C++

所需传入参数为8×8的二维整型数组data；最外层i-for循环100次用于延长单次显示时间，大约持续零点几秒，否则显示时间过短，效果不好；row-for循环中，每次循环首先将该行控制的点阵行通低电平：digitalWrite(rowPin[row],LOW);然后再col-for循环遍历每列，将该列控制的点阵列通data数组相应的电平值：digitalWrite(colPin[col],data[row][col]);

调用示例如下：

//显示数字‘0’
int data[8][8]={
0,0,0,1,1,0,0,0,
0,0,1,0,0,1,0,0,
0,1,0,0,0,0,1,0,
0,1,0,0,0,0,1,0,
0,1,0,0,0,0,1,0,
0,1,0,0,0,0,1,0,
0,0,1,0,0,1,0,0,
0,0,0,1,1,0,0,0
};
showChar(data);
C++
  • IRremote库使用
    为了实现红外遥控，需要用到Arduino内置库IRremote
    核心代码为
#include <IRremote.h>
//红外接收引脚
const int irRecPin = A5;

IRrecv irrecv(irRecPin);
decode_results irResults;

void setup() {
  Serial.begin(9600); //启动串口通讯
  irrecv.enableIRIn();
}
void loop() {
  //红外
  if (irrecv.decode(&irResults)) {
    long code =irResults.value;
    Serial.println(code);
    irrecv.resume(); // Receive the next value
  }
}
C++

蓝牙控制部分介绍见文 Arduino使用蓝牙控制8×8点阵显示，本文暂不赘述

案例

编写程序实现可由红外和蓝牙同时进行控制点阵显示：


#include <IRremote.h>

//Col : 13,3,4,10,6,11,15,16(点阵引脚)
const int colPin[] = {6, A2, A3, 3, 12, 4, 8, 9}; //pin
//Row : 9,14,8,12,1,7,2,5(点阵引脚)
const int rowPin[] = {2, 7, 10, 5, A0, 11, A1, 13}; //pin
//红外接收引脚
const int irRecPin = A5;
const int PROGMEM data_0[8][8] =
{
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 1, 0, 0, 1, 0, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 0, 1, 0, 0, 1, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0
};

const int PROGMEM data_1[8][8] =
{
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 1, 0, 1, 0, 0, 0,
  0, 0, 0, 0, 1, 0, 0, 0,
  0, 0, 0, 0, 1, 0, 0, 0,
  0, 0, 0, 0, 1, 0, 0, 0,
  0, 0, 0, 0, 1, 0, 0, 0,
  0, 0, 0, 0, 1, 0, 0, 0,
  0, 1, 1, 1, 1, 1, 1, 0
};
const int PROGMEM data_2[8][8] =
{
  0, 0, 1, 1, 1, 0, 0, 0,
  0, 1, 0, 0, 0, 1, 0, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 0, 0, 0, 0, 0, 1, 0,
  0, 0, 0, 0, 0, 1, 0, 0,
  0, 0, 0, 0, 1, 0, 0, 0,
  0, 0, 1, 1, 0, 0, 0, 0,
  0, 1, 1, 1, 1, 1, 1, 0
};
const int PROGMEM data_3[8][8] =
{
  0, 0, 1, 1, 1, 1, 0, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 0, 0, 0, 0, 0, 1, 0,
  0, 0, 0, 0, 0, 1, 0, 0,
  0, 0, 1, 1, 1, 0, 0, 0,
  0, 0, 0, 0, 0, 1, 0, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 0, 1, 1, 1, 1, 0, 0
};
const int PROGMEM data_4[8][8] =
{
  0, 0, 0, 0, 1, 0, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 1, 0, 1, 0, 0, 0,
  0, 1, 0, 0, 1, 0, 0, 0,
  1, 1, 1, 1, 1, 1, 1, 1,
  0, 0, 0, 0, 1, 0, 0, 0,
  0, 0, 0, 0, 1, 0, 0, 0,
  0, 0, 0, 0, 1, 0, 0, 0
};
const int PROGMEM data_5[8][8] =
{
  0, 1, 1, 1, 1, 1, 1, 0,
  0, 1, 0, 0, 0, 0, 0, 0,
  0, 1, 0, 0, 0, 0, 0, 0,
  0, 1, 1, 1, 1, 1, 0, 0,
  0, 0, 0, 0, 0, 0, 1, 0,
  0, 0, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 0, 1, 1, 1, 1, 0, 0
};
const int PROGMEM data_6[8][8] =
{
  0, 0, 1, 1, 1, 1, 0, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 0, 0,
  0, 1, 0, 1, 1, 1, 0, 0,
  0, 1, 1, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 0, 1, 1, 1, 1, 0, 0
};
const int PROGMEM data_7[8][8] =
{
  0, 0, 1, 1, 1, 1, 0, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 0, 0, 0, 0, 0, 1, 0,
  0, 0, 0, 0, 0, 0, 1, 0,
  0, 0, 0, 0, 0, 1, 0, 0,
  0, 0, 0, 0, 1, 0, 0, 0,
  0, 0, 0, 1, 0, 0, 0, 0
};
const int PROGMEM data_8[8][8] =
{
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 1, 0, 0, 1, 0, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 0, 1, 0, 0, 1, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 1, 0, 0, 1, 0, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 0, 1, 1, 1, 1, 0, 0
};
const int PROGMEM data_9[8][8] =
{
  0, 0, 1, 1, 1, 1, 0, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 1, 1, 1, 1, 1, 0,
  0, 0, 0, 0, 0, 0, 1, 0,
  0, 0, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 0, 1, 1, 1, 1, 0, 0
};
const int PROGMEM data_A[8][8] =
{
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 1, 0, 0, 1, 0, 0,
  0, 0, 1, 1, 1, 1, 0, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  1, 0, 0, 0, 0, 0, 0, 1,
  1, 0, 0, 0, 0, 0, 0, 1
};
const int PROGMEM data_a[8][8] =
{
  0, 0, 1, 1, 1, 1, 1, 0,
  0, 0, 0, 0, 0, 0, 0, 1,
  0, 0, 0, 0, 0, 0, 0, 1,
  0, 1, 1, 1, 1, 1, 1, 1,
  1, 0, 0, 0, 0, 0, 0, 1,
  1, 0, 0, 0, 0, 0, 0, 1,
  1, 0, 0, 0, 0, 0, 1, 1,
  0, 1, 1, 1, 1, 1, 0, 1
};
const int PROGMEM data_b[8][8] =
{
  0, 1, 0, 0, 0, 0, 0, 0,
  0, 1, 0, 0, 0, 0, 0, 0,
  0, 1, 0, 0, 0, 0, 0, 0,
  0, 1, 0, 1, 1, 1, 0, 0,
  0, 1, 1, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 1, 0, 0,
  0, 1, 1, 1, 1, 0, 0, 0
};
const int PROGMEM data_c[8][8] =
{
  0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 1, 1, 1, 1, 0, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 0, 0,
  0, 1, 0, 0, 0, 0, 0, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 0, 1, 1, 1, 1, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0
};
const int PROGMEM data_d[8][8] =
{
  0, 0, 0, 0, 0, 0, 1, 0,
  0, 0, 0, 0, 0, 0, 1, 0,
  0, 0, 0, 0, 0, 0, 1, 0,
  0, 1, 1, 1, 1, 0, 1, 0,
  1, 0, 0, 0, 0, 1, 1, 0,
  1, 0, 0, 0, 0, 0, 1, 0,
  1, 0, 0, 0, 0, 1, 1, 0,
  0, 1, 1, 1, 1, 0, 0, 1
};
const int PROGMEM data_e[8][8] =
{
  0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 1, 1, 1, 0, 0,
  0, 0, 1, 0, 0, 0, 1, 0,
  0, 1, 1, 1, 1, 1, 0, 0,
  0, 1, 0, 0, 0, 0, 0, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 0, 1, 1, 1, 1, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0
};
const int PROGMEM data_H[8][8] =
{
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 1, 1, 1, 1, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0
};
const int PROGMEM data_h[8][8] =
{
  0, 1, 0, 0, 0, 0, 0, 0,
  0, 1, 0, 0, 0, 0, 0, 0,
  0, 1, 0, 0, 0, 0, 0, 0,
  0, 1, 0, 1, 1, 0, 0, 0,
  0, 1, 1, 0, 0, 1, 0, 0,
  0, 1, 0, 0, 0, 1, 0, 0,
  0, 1, 0, 0, 0, 1, 0, 0,
  0, 1, 0, 0, 0, 0, 1, 0
};
const int PROGMEM data_i[8][8] =
{
  0, 0, 0, 0, 1, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 1, 0, 1, 0, 0, 0,
  0, 0, 0, 0, 1, 0, 0, 0,
  0, 0, 0, 0, 1, 0, 0, 0,
  0, 0, 1, 1, 1, 1, 1, 0,
  0, 0, 0, 0, 0, 0, 0, 0
};
const int PROGMEM data_l[8][8] =
{
  0, 0, 0, 1, 0, 0, 0, 0,
  0, 0, 1, 1, 0, 0, 0, 0,
  0, 0, 0, 1, 0, 0, 0, 0,
  0, 0, 0, 1, 0, 0, 0, 0,
  0, 0, 0, 1, 0, 0, 0, 0,
  0, 0, 0, 1, 0, 0, 0, 0,
  0, 0, 0, 1, 0, 1, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0
};
const int PROGMEM data_n[8][8] =
{
  0, 0, 0, 0, 0, 0, 0, 0,
  0, 1, 0, 1, 1, 1, 0, 0,
  0, 1, 1, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 0, 0, 0, 0, 0, 0, 0
};
const int PROGMEM data_o[8][8] =
{
  0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 1, 1, 1, 1, 0, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 0, 1, 1, 1, 1, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0
};
const int PROGMEM data_r[8][8] =
{
  0, 0, 0, 0, 0, 0, 0, 0,
  0, 1, 0, 1, 1, 1, 0, 0,
  0, 0, 1, 0, 0, 0, 1, 0,
  0, 0, 1, 0, 0, 0, 0, 0,
  0, 0, 1, 0, 0, 0, 0, 0,
  0, 0, 1, 0, 0, 0, 0, 0,
  0, 0, 1, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0
};
const int PROGMEM data_u[8][8] =
{
  0, 0, 0, 0, 0, 0, 0, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 1, 0, 0, 0, 1, 1, 0,
  0, 0, 1, 1, 1, 0, 1, 0,
  0, 0, 0, 0, 0, 0, 0, 0
};
const int PROGMEM data_incr[8][8] =
{
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0,
  1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1,
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0
};
const int PROGMEM data_decr[8][8] =
{
  0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,
  1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1,
  0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,
};
const int PROGMEM data_warning[8][8] =
{
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0
};
const int PROGMEM data_default[8][8] =
{
  0, 0, 0, 0, 0, 0, 0, 0,
  0, 1, 1, 1, 0, 1, 1, 0,
  1, 0, 0, 0, 1, 0, 0, 1,
  1, 0, 0, 0, 0, 0, 0, 1,
  1, 0, 0, 0, 0, 0, 0, 1,
  0, 1, 0, 0, 0, 0, 1, 0,
  0, 0, 1, 0, 0, 1, 0, 0,
  0, 0, 0, 1, 1, 0, 0, 0
};

IRrecv irrecv(irRecPin);
decode_results irResults;

void setup() {
  Serial.begin(9600); //启动串口通讯
  irrecv.enableIRIn();
  for (int i = 0; i < 8; i++) {
    pinMode(colPin[i], OUTPUT); //设置输出
    pinMode(rowPin[i], OUTPUT); //设置输出
  }
  reset();
  //  initView();
}
void loop() {
  //蓝牙
  if (Serial.available() > 0) {
    char c = Serial.read();
    dealChar(c);
    Serial.print("char value:");
    Serial.println(c);
  }
  //红外
  if (irrecv.decode(&irResults)) {
    long code =irResults.value;
//    Serial.println(code);
    irrecv.resume(); // Receive the next value
    dealIRRes(code);
  }
}

void initView() {
  showCharList("HelloArduino!0123456789.");
}

void reset() {
  for (int i = 0; i < 8; i++) {
    digitalWrite(colPin[i], LOW);
    digitalWrite(rowPin[i], HIGH);
  }
}
void dealChar(char ch) {
  switch (ch) {
    case '0' : {
        showChar(data_0);
        break;
      }
    case '1' : {
        showChar(data_1);
        break;
      }
    case '2' : {
        showChar(data_2);
        break;
      }
    case '3' : {
        showChar(data_3);
        break;
      }
    case '4' : {
        showChar(data_4);
        break;
      }
    case '5' : {
        showChar(data_5);
        break;
      }
    case '6' : {
        showChar(data_6);
        break;
      }
    case '7' : {
        showChar(data_7);
        break;
      }
    case '8' : {
        showChar(data_8);
        break;
      }
    case '9' : {
        showChar(data_9);
        break;
      }
    case 'A' : {
        showChar(data_A);
        break;
      }
    case 'a' : {
        showChar(data_a);
        break;
      }
    case 'b' : {
        showChar(data_b);
        break;
      }
    case 'c' : {
        showChar(data_c);
        break;
      }
    case 'd' : {
        showChar(data_d);
        break;
      }
    case 'e' : {
        showChar(data_e);
        break;
      }
    case 'H' : {
        showChar(data_H);
        break;
      }
    case 'h' : {
        showChar(data_h);
        break;
      }
    case 'i' : {
        showChar(data_i);
        break;
      }
    case 'l' : {
        showChar(data_l);
        break;
      }
    case 'n' : {
        showChar(data_n);
        break;
      }
    case 'o' : {
        showChar(data_o);
        break;
      }
    case 'r' : {
        showChar(data_r);
        break;
      }
    case 'u' : {
        showChar(data_u);
        break;
      }
    case '!' : {
        showChar(data_warning);
        break;
      }
    default : {
        showChar(data_default);
        break;
      }
  }
}

void dealIRRes(long code){
  switch (code) {
    case 16769055 : {
        showChar(data_decr);
        break;
      }
    case 16754775 : {
        showChar(data_incr);
        break;
      }
    case 16738455 : {
        showChar(data_0);
        break;
      }
    case 16724175 : {
        showChar(data_1);
        break;
      }
    case 16718055 : {
        showChar(data_2);
        break;
      }
    case 16743045 : {
        showChar(data_3);
        break;
      }
    case 16716015 : {
        showChar(data_4);
        break;
      }
    case 16726215 : {
        showChar(data_5);
        break;
      }
    case 16734885 : {
        showChar(data_6);
        break;
      }
    case 16728765 : {
        showChar(data_7);
        break;
      }
    case 16730805 : {
        showChar(data_8);
        break;
      }
    case 16732845 : {
        showChar(data_9);
        break;
      }
  }
}

void showChar(const int data[8][8]) {

  for (int i = 0; i < 50; i++) {
    for (int row = 0; row < 8; row++) {
      digitalWrite(rowPin[row], LOW);
      for (int col = 0; col < 8; col++) {
        digitalWrite(colPin[col], pgm_read_byte(&data[row][col]));
      }
      delay(1);
      reset();
    }
  }
  delay(100);
}
void showCharList(const char * list) {
  for (int i = 0; i < strlen(list); i++) {
    dealChar(list[i]);
  }
}
C++

演示效果

微信原创文章

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2022-08-10 Arduino控制8×8点阵显示

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2022-05-06 前端选择本地图片并压缩

2022-05-05 前端选择本地文件并显示

2022-05-01 写了一个很简易的Markdown编辑器

2022-04-30 Java 生成二维码（已优化）

2022-04-30 Java 生成二维码

2022-04-30 写了一个纯前端的验证码

文章作者： 续加仪
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