https://github.com/davetcc/leddisplay

Arduino 7 segment display project
https://github.com/davetcc/leddisplay

7-segment arduino interrupt library

Last synced: about 2 months ago
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Arduino 7 segment display project

• Host: GitHub
• URL: https://github.com/davetcc/leddisplay
• Owner: davetcc
• Created: 2015-05-01T06:15:03.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2018-09-23T15:54:28.000Z (over 6 years ago)
• Last Synced: 2024-05-01T14:47:36.547Z (8 months ago)
• Topics: 7-segment, arduino, interrupt, library
• Language: C++
• Size: 21.5 KB
• Stars: 7
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# LedDisplay: Display driver for multi-digit 7-segment displays

LEDDisplay is a library that renders information onto multi-digit 7-segment displays. This library requires no additional hardware and uses the [mutliplex method to refresh each digit](https://www.thecoderscorner.com/electronics/microcontrollers/driving-displays/65-arduino-multiple-7-segment-display-tutorial/). Further, the standalone version can use interrupts to multiplex the digits of the display,  meaning that you don't have to constantly call an "update" method to do the multiplexing.

## Installation

Take a zip download (clone or download button) from here and install it into your Arduino libraries directory.

Libraries are usually installed into the Arduino directory under libraries. For example on Windows / MacOS it may be: `~/Documents/Arduino/libraries`

When you unzip into the libraries directory, enusre the directory is called leddisplay (you'll probably need to remove master from the end).

## Simple use case

Include the header and create a global display variable as below:

	#include 

	// startingPin where the A-G and DP are wired - must be sequential pins.

	// commonIsHigh set to true if your common pin is at 5V when on, otherwise false.

	// optional noOfDigits sets the number of digits for your display (default 4)

	LedDisplay display(startingPin, commonIsHigh, optional noOfDigits );

In setup start the library:

	void setup() {

		// This line starts the muliplexing of the digits on an interrupt

		// if you prefer you can update the display manually too (see docs).

		display.startInterrupt();

	}

Then you can draw onto the display, here's a few examples:

	display.setValueDec(20); // display 20 onto the display

	display.setValueFloat(1.234, 3); // display float with 3dp eg (1.234)

	display.setValueHex(254); // display the value as Hexadecimal.

	display.setValueRaw(1,1); // draw character 1 at position 1.

## More information

[TheCodersCorner library documenation](https://www.thecoderscorner.com/products/arduino-libraries/led-display/)