Arduino与Proteus仿真实例-HT16K33驱动4位7段数码管仿真

HT16K33驱动4位段数码管仿真

七段显示模块是一种用于显示数字的电子设备，由七个LED段组成。由于 LED 的尺寸很小，因此很容易将多个 LED 连接在一起以形成一个类似七段显示器的单元。在七段显示模块中，七个LED排列成一个矩形。有时，在七段显示单元中会看到一个额外的 LED，用于显示小数点。

在前面的实例中，对7段数码管做了详细的介绍，请参考：

HT16K33 是一个内存映射和多功能 LED 控制器驱动器。设备中最大显示段数为128个模式（16段和8个公共点），带有13*3（MAX.）矩阵键扫描电路。 HT16K33 的软件配置特性使其适用于多种 LED 应用，包括 LED 模块和显示子系统。 HT16K33 与大多数微控制器兼容，并通过两线双向 I2C 总线进行通信。

在前面的实例中，对HT16K33做了相关介绍，请参考：

1、仿真电路原理图

2、仿真代码实现

本次使用到如下开源库：

Adafruit_LED_Backpack

开源库中的演示代码如下：

/\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* 
 This is a library for our I2C LED Backpacks

 Designed specifically to work with the Adafruit LED 7-Segment backpacks 
 ----> http://www.adafruit.com/products/881
 ----> http://www.adafruit.com/products/880
 ----> http://www.adafruit.com/products/879
 ----> http://www.adafruit.com/products/878

 These displays use I2C to communicate, 2 pins are required to 
 interface. There are multiple selectable I2C addresses. For backpacks
 with 2 Address Select pins: 0x70, 0x71, 0x72 or 0x73. For backpacks
 with 3 Address Select pins: 0x70 thru 0x77

 Adafruit invests time and resources providing this open source code, 
 please support Adafruit and open-source hardware by purchasing 
 products from Adafruit!

 Written by Limor Fried/Ladyada for Adafruit Industries. 
 BSD license, all text above must be included in any redistribution
 \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*/

#include <Wire.h> // Enable this line if using Arduino Uno, Mega, etc.
#include <Adafruit\_GFX.h>
#include "Adafruit\_LEDBackpack.h"

Adafruit_7segment matrix = Adafruit\_7segment();

void setup() {
#ifndef \_\_AVR\_ATtiny85\_\_
  Serial.begin(9600);
  Serial.println("7 Segment Backpack Test");
#endif
  matrix.begin(0x70);
}

void loop() {
  // try to print a number thats too long
  matrix.print(10000, DEC);
  matrix.writeDisplay();
  delay(500);

  // print a hex number
  matrix.print(0xBEEF, HEX);
  matrix.writeDisplay();
  delay(500);

  // print a floating point 
  matrix.print(12.34);
  matrix.writeDisplay();
  delay(500);

  // print a string message
  matrix.print("7SEG");
  matrix.writeDisplay();
  delay(100);
  
  // print with print/println
  for (uint16\_t counter = 0; counter < 9999; counter++) {
    matrix.println(counter);
    matrix.writeDisplay();
    delay(10);
  }

  // method #2 - draw each digit
  uint16\_t blinkcounter = 0;
  boolean drawDots = false;
  for (uint16\_t counter = 0; counter < 9999; counter ++) {
    matrix.writeDigitNum(0, (counter / 1000), drawDots);
    matrix.writeDigitNum(1, (counter / 100) % 10, drawDots);
    matrix.drawColon(drawDots);
    matrix.writeDigitNum(3, (counter / 10) % 10, drawDots);
    matrix.writeDigitNum(4, counter % 10, drawDots);
   
    blinkcounter+=50;
    if (blinkcounter < 500) {
      drawDots = false;
    } else if (blinkcounter < 1000) {
      drawDots = true;
    } else {
      blinkcounter = 0;
    }
    matrix.writeDisplay();
    delay(10);
  }
}