查看4位数码管模块的源代码


[[Image:4位数码管-小数点.jpg|350px|thumb|4位数码管]]



=== 产品简介 ===
<br>
4位数码管模块是采用TM1650专用数码管驱动芯片驱动4位0.56英寸数码管。模块提供小数点、时钟两种模式可选择，采用PH2.0-4P接口/XH2.54-4P排针接口，配合专用传感器线使用方便接线；且有M3安装柱可选配，方便固定。

TM1650 是专用的数码管驱动芯片，多可以驱动4个8段数码管，2线控制接口，节省单片机端口资源。通过芯片内部的寄存器可以设置显示的位数和显示的亮度，8级亮度可调。

将4位数码管模块加入项目中，可用来显示数值、时钟等信息。



=== 规格参数 ===
<br>
*数码管：0.56 英寸，4 位
*驱动IC：TM1650
*工作电压 3V~5V
*工作温度：-40℃~80℃
*亮度等级：8 级亮度可设置
*模块尺寸：50.5mm * 19.5mm 
*安装孔：3mm
*安装孔中心距：42mm * 12mm
*模块重量：3.8g



=== 引脚说明 ===
<br>
*1. GND 黑线  --  Gnd(地)
*2. VCC 红线  --  Vcc(电源+5V)
*3. CLK 蓝线  --  信号
*3. DIO 白线  --  信号


=== 应用示例 ===
<br>

'''电路连接'''

<br>
{|border="1" cellspacing="0" align="center" cellpadding="5" width="600px"
|-
|align="center"|4位数码管显示模块
|align="center"|Arduino UNO
|-
|align="center"|VCC
|align="center"|+5V
|-
|align="center"|GND
|align="center"|GND
|-
|align="center"|CLK
|align="center"|D10
|-
|align="center"|DIO
|align="center"|D11
|}

<br>

'''电路连接示意图'''

<br>
<img src="http://yfrobot.gitee.io/pic/wiki/4位数码管显示.png"  alt="4位数码管显示" />

<font color="darkorenge">''' 提示'''</font>：以下程序需使用到 tm1650库文件，文件下载地址见页末 - 参考资料。下载后将其解压至arduinoIDE安装目录/libraries文件夹中，例如： "D:\Program Files\Arduino\arduino-1.6.4-windows\arduino-1.6.4\libraries"。

'''示例代码'''
<br><br>
<font color="darkcyan">'''示例一'''</font>：4位数码管显示测试
<br>

[http://yfrobot.gitee.io/lib/YFTM1650.rar TM1650库文件]
<pre >
/*------------------------------------------------------------------------------------

   TM1650 nixie tube

   This example code shows how to use the functions of the TM1650 Library.

  -------------------------------------------------------------------------------------*/
/*************************************************************************************/

#include<tm1650.h>

#define ON	DISPLAY_ON
#define OFF	DISPLAY_OFF
#define SegmentMode		_8_SEGMENT_MODE
unsigned char  LightLevel = LV2;
unsigned char  WorkMode = NORMAL_MODE;

//define each segment
const unsigned char  Seg_test[8] =      {0x20, 0x01, 0x02, 0x04, 0x08, 0x10, 0x40, 0x80};
//number 0-9 code
const unsigned char Number_arr[10] =   {0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f};

unsigned char i, j = 0, k = 0, l = 0, m = 0;
unsigned char temp[4] = {0x3f, 0x06, 0x5b, 0x4f};
boolean err = 0;

int	pin_SCK = 10;
int	pin_DIO = 11;

TM1650 tm1650(pin_SCK, pin_DIO);

void setup()
{

}

void loop()
{

  //config tm1650
  err = tm1650.DisplayConfig_TM1650(LightLevel, SegmentMode, WorkMode, ON);
  //all nixie tube turn on
  for (i = 0; i < 4; i++)
  {
    err = tm1650.DisplayOneDigi_TM1650(i + 1, 0xFF);
  }
  delay(500);

  //loop each segment
  for (m = 0; m < 8; m++)
  {
    for (i = 0; i < 4; i++)
    {
      err = tm1650.DisplayOneDigi_TM1650(i + 1, Seg_test[m]);
    }
    delay(500);
  }

  //display form 0 to 9
  for (m = 0; m <= 9; m++)
  {
    for (i = 0; i < 4; i++)
    {
      err = tm1650.DisplayOneDigi_TM1650(i + 1, Number_arr[m]);
    }
    delay(500);
  }
  //display the content of array temp[]
  for (i = 0; i < 4; i++)
  {
    err = tm1650.DisplayOneDigi_TM1650(i + 1, temp[i]);
  }
  delay(500);

  //all turn off
  err = tm1650.DisplayOFF_TM1650(LightLevel, SegmentMode, WorkMode);
  delay(1000);

  //turn on again
  err = tm1650.DisplayON_TM1650(LightLevel, SegmentMode, WorkMode);
  delay(1000);
}
</pre>
程序下载地址：[http://yfrobot.gitee.io/ino/TM1650_nixie_tube.ino TM1650_nixie_tube]

程序运行结果：根据显示效果看程序，更方便理解

<!-- 
<br><br>
<font color="darkcyan">'''示例二'''</font>：电位器控制[http://www.yfrobot.com/wiki/index.php?title=%E5%BD%A9%E8%89%B2LED%E6%A8%A1%E5%9D%97 彩色LED模块]变色
<br>
'''电路连接示意图'''

<img src="http://wiki.yfrobot.com/image/sensor_circuit/potentiometer2.png-yf"  alt="potentiometer2" />
<br>

<pre>

/*
  Potentiometer control RGB LED change color
*/

#include <Adafruit_NeoPixel.h>

#define RGBLEDPin  5
#define NUMPIXELS  4
#define pPin  A0

// Parameter 1 = number of pixels in strip
// Parameter 2 = pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:
//   NEO_KHZ800  800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
//   NEO_KHZ400  400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
//   NEO_GRB     Pixels are wired for GRB bitstream (most NeoPixel products)
//   NEO_RGB     Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, RGBLEDPin, NEO_GRB + NEO_KHZ800);

int pVal = 0;
int RVal = 0;
int GVal = 0;
int BVal = 0;

void setup()
{
  pinMode(RGBLEDPin, OUTPUT);
  pixels.begin(); // This initializes the NeoPixel library.
  pixels.show();
}

void loop()
{
  pVal = analogRead(pPin);    //读取A0模拟口的数值（0-5V 对应 0-1203取值）
  if (pVal >= 0 && pVal <= 170) {
    RVal = 255;
    GVal = 0;
    BVal = map(pVal, 0, 170, 0, 255);
  } else if (pVal > 170 && pVal <= 340) {
    RVal = map(pVal, 170, 340, 255, 0);
    GVal = 0;
    BVal = 255;
  } else if (pVal > 340 && pVal <= 510) {
    RVal = 0;
    GVal = map(pVal, 340, 510, 0, 255);
    BVal = 255;
  } else if (pVal > 510 && pVal <= 680) {
    RVal = 0;
    GVal = 255;
    BVal = map(pVal, 510, 680, 255, 0);
  } else if (pVal > 680 && pVal <= 850) {
    RVal = map(pVal, 680, 850, 0, 255);
    GVal = 255;
    BVal = 0;
  } else {
    RVal = 255;
    GVal = map(pVal, 850, 1023, 255, 0);
    BVal = 0;
  }
  lightLED(RVal, GVal, BVal);
}

void lightLED(int r, int g , int b) {
  // For a set of NeoPixels the first NeoPixel is 0, second is 1, all the way up to the count of pixels minus one.
  for (int i = 0; i < NUMPIXELS; i++) {
    // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
    pixels.setPixelColor(i, r, g, b); // Moderately bright green color.
    pixels.show(); // This sends the updated pixel color to the hardware.
  }
}

</pre>

程序下载地址：[https://eyun.baidu.com/s/3dFaSHgP ChangeColor]

程序运行结果：转动电位器，彩色led变色。
-->


===参考资料===
<br>
[http://yfrobot.gitee.io/lib/YFTM1650.rar TM1650库文件]




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