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README_en.md

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ae7seg

This is a library for AE-7SEG-BOARD, a 7-segment LED serial driver module from Akizuki Electronics.

The library supports dot segments, multi-digit, SPI or GPIO connections.

Features

  • Controlling seven-segment LED using 74595 shift register
  • Support display dot segment, and any segments
  • Support multiple digits (no limit)
  • Support SPI and GPIO (can use any pins as SDI and SCK)

Usage

After the library is installed, include the header file to your sketch

#include <ae7seg.h>

and then, declare AE7SEGSPI or AE7SEGGPIO and specify the number of LATCH pin.

// use SPI
AE7SEGSPI ae7seg(PIN_LATCH);

// ...or use GPIO
AE7SEGGPIO ae7seg(PIN_LATCH, PIN_SDI, PIN_SCK);

Call writeNumber(number) function with beginWrite() and endWrite() in order to display one digit.

ae7seg.beginWrite();
ae7seg.writeNumber(7);  // to display "7"
ae7seg.endWrite();

To write multiple digits, call writeNumber(number) as many digits as you need.

ae7seg.beginWrite();
ae7seg.writeNumber(4);  // the most significant digit = "4"
ae7seg.writeNumber(2);
ae7seg.endWrite();

To display a dot segment, call writeNumber(number, true). If there is no second argument, it is implicitly hidden.

ae7seg.beginWrite();
ae7seg.writeNumber(4, true);  // display a dot segment
ae7seg.writeNumber(2);        // implicitly hidden a dot segment
ae7seg.endWrite();

To display any segment, call writeDigit(digit) instead of writeNumber(number).

ae7seg.beginWrite();
ae7seg.writeDigit(0b01101110);  // "H"
ae7seg.endWrite();

License

MIT License