DFRobot_LedDisplayModule

• 中文版

This is a 4bits / 8bits digital tube. It communicates with the host via IIC to show numbers from 0 to 9, capital letters A, B, C, D, E, F, H, L, O, P, U and dash-.
The IIC address of 4 bits digital tube in default is 0x48.
The IIC address of 8 bits digital tube in default is 0xE0. This address can be changed to 0xE2, 0xE4, 0xE6 with different combinations of 2 welding points that in the back of the display.

Product Link (https://www.dfrobot.com)

SKU: DFR0646\DFR0645

Table of Contents

• Summary
• Installation
• Methods
• Compatibility
• History
• Credits

Summary

This is an Arduino IDE library to help realize the communication between the 4bits/8bits digital tube and Arduino
The library ease the control of display by IIC

Installation

To use this library, please download the library file first and paste it into the \Arduino\libraries directory, then open the examples folder and run the demo in the folder.

Methods

  /**
   * @fn begin
   * @brief  init digital tube
   * @param bit set display digit
   * @return Return 0 if the initialization is successful, otherwise return non-zero
   */
  int begin(eSetBit_t bit);

  /**
   * @fn displayOn
   * @brief Turn ON the display
   * @n IIC command to turn ON the display
   * @return None
   */
  void displayOn();

  /**
   * @fn displayOff
   * @brief Turn OFF the display 
   * @n IIC command to turn OFF the display
   * @return None
   */  
  void displayOff();

  /**
   * @fn flashTwos
   * @brief Flash mode of the 8 bits digital tube, flash at 0.5Hz
   * @n IIC flash command
   * @return None
   */
  void flashTwos();

  /**
   * @fn flashOnes
   * @brief Flash mode of the 8 bits digital tube, flash at 1Hz
   * @n IIC flash command
   * @return None
   */
  void flashOnes();

  /**
   * @fn flashHalfs
   * @brief Flash mode of the 8 bits digital tube, flash at 2Hz
   * @n IIC flash command
   * @return None
   */
  void flashHalfs();

  /**
   * @fn stopFlash
   * @brief The 8 bits digital tube stops flash 
   * @n IIC command to stop flash
   * @return None
   */
  void stopFlash();

  /**
   * @fn setBrightness
   * @brief Set brightness ofdigital tube
   * @param brightnessValue The brightness value can be set to numbers 1~8
   * @return None
   */
  void setBrightness(int brightnessValue); 

  /**
   * @fn setDisplayArea
   * @brief Display area of the digital tube
   * @param areaData Display area from the first bit to the fourth bit could be number 1~4.
   * @return None
   */
  void setDisplayArea(int areaData1 = 82,int areaData2 = 82,int areaData3 = 82,int areaData4 = 82,int areaData5 = 82,int areaData6 = 82,int areaData7 = 82,int areaData8 = 82);

  /**
   * @fn print
   * @brief Print data of  digital tube
   * @param sensorData It could be both integer and decimal
   * @return None
   */  
  void print(double sensorData);

  /**
   * @fn print
   * @brief Print data of  digital tube
   * @param buf  Displayed data of bit 1 to bit 8 could be the numbers 0 to 9, capital letters A, B, C, D, E, F, H, L, O, P, U and dash-,
   * @n and it also could be decimal points, such as "0." "9." "A." "-."
   * @return None
   */
  void print(const char *buf1 = "82",const char *buf2 = "82",const char *buf3 = "82",const char *buf4 = "82",const char *buf5 = "82",const char *buf6 = "82",const char *buf7 = "82",const char *buf8 = "82");

Compatibility

History

• 2019/12/10 Version V1.0.0 released.
• 2022/03/21 Version V1.0.1 released.

Credits

Written by Actor (wenzheng.wang@dfrobot.com), 2019. (Welcome to our website)