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Arduino Library for STLED316S LED controller with keyscan

Link to STLED316S product page

• Adjustment of the correspondence between the driver outputs and the display segments
• Drive individualy each Digit LED display
• Drive individualy each LED output
• Display of raw data, decimal number or hexadecimal number
• Brightness adjustment of each digit and LED
• Keyscan reading (possibility on interruption)
• (option) Hardware SPI (Reading the registers of the STLED316S is not possible using the hardware SPI. In this mode it is not possible to read the status of the Keyscan)

• Version 1.0.0 -- Intial version
• Version 1.0.1 -- Addition of a private variable to save the state of the LEDs.
• Version 1.0.2 -- Fix vtable linker error
• Version 1.0.3 :
  • Modify default correspondence between the driver outputs and the display segments (STLED316S Display Board compatibility)
  • Add an example of using the keys interrupt
• Version 1.1.0 :
  • Add display float function
  • Add display signed decimal function
  • Add keyscan read function

• Arduino Uno (5V) : Tested
• Arduino Mega (5V) : Tested
• Arduino Due : Not tested
• STM32 : Not tested
• ESP8266 : Not tested
• ESP32 : Not tested
• ...

STLED316S Display Board :

Download STLED316S from this Github repository, un-zip or extract the files and place the STLED316S directory in your .../Arduino/libraries/... folder. The .../Arduino/... folder is the one where your Arduino IDE sketches are usually located.

Include the STLED316S.h file at the beginning of your sketch:

#include <STLED316S.h>

The object should be created with only the parameters:

• Number of digit
• STB pin (chip select)
• Clock pin
• DIN/DOUT pin

Example:

#define NBR_OF_DIGIT  2
#define STB_PIN       8
#define CLK_PIN       13
#define DATA_PIN      11

STLED316S stled(NBR_OF_DIGIT, STB_PIN, CLK_PIN, DATA_PIN);

To initialise the STLED316S it is necessary to call the begin() function.

Without parameters (digA = SEG1, digB = SEG2, digC = SEG3 ...) :

stled.begin();

With parameters -> Adjustment of the correspondence between the driver outputs and the display segments: begin(uint8_t digA, uint8_t digB, uint8_t digC, uint8_t digD, uint8_t digE, uint8_t digF, uint8_t digG, uint8_t digDP) with :

• digA : Output pin of STLED316S for segment a
• digB : Output pin of STLED316S for segment b
• digC : Output pin of STLED316S for segment c
• digD : Output pin of STLED316S for segment d
• digE : Output pin of STLED316S for segment e
• digF : Output pin of STLED316S for segment f
• digG : Output pin of STLED316S for segment g
• digDP : Output pin of STLED316S for segment DP Values : (STLED316S outputs) SEG1, SEG2, SEG3, SEG4, SEG5, SEG6, SEG7 or SEG8

Example:

stled.begin(SEG1, SEG2, SEG3, SEG4, SEG5, SEG6, SEG7, SEG8);

• STLED316S_display.ino : Control LED and digit
• STLED316S_keyscan.ino : Reading the keyscan status with polling
• STLED316S_keys_interrupt.ino : Reading the keyscan status on interruption
• STLED316S_spi.ino : Using hardware SPI

You can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.