MAX7219 Seven Segment Display

[zeysh]

Hello Pieter,

I try to get the MCU::TimeDisplay on a MAX7219 Seven Segment Display.

I see something that may be usefull in the documentation MAX7219SevenSegmentDisplay.
Could you provide an example for that ?

Thanks!

#include <Control_Surface.h> // Include the Control Surface library
#include <AH/Hardware/LEDs/MAX7219SevenSegmentDisplay.hpp>

// Instantiate a MIDI over USB interface.
USBMIDI_Interface midi;

MCU::TimeDisplay timedisplay;

void setup() {
  Control_Surface.begin(); // Initialize Control Surface
  // No need to initialize the MAX7219 or to set pinModes, all of this
  // is handled by Control Surface.
}

void loop() {
  Control_Surface.loop(); // Update the Control Surface
}

[tttapa]

I don't have the necessary hardware to test it, but if my memory serves me right, something like this should work:

#include <Control_Surface.h>

MAX7219SevenSegmentDisplay<> disp{SPI, 10}; // load/CS pin

void setup() {
  disp.begin();
  disp.display("hello.");
}

void loop() {}

You could get the text from the timedisplay using MCU::TimeDisplay::getText (although there are lower-level ways to do this without an intermediate buffer).

[zeysh]

Hi Pieter,

Thanks for your reply. Works perfectly!

#include <Control_Surface.h> // Include the Control Surface library

// Instantiate a MIDI over USB interface.
USBMIDI_Interface midi;

MCU::TimeDisplay timedisplay;

MAX7219SevenSegmentDisplay<> disp(SPI, 10); // load/CS pin
//MCU::TimeDisplay::getText;

void timecode() {
  char ticks[4];
  timedisplay.getText(ticks, 6, 3);
  char beats[3];
  timedisplay.getText(beats, 3, 2);
  char bars[4];
  timedisplay.getText(bars, 0, 3);
  char allTime[8] = "";
  strcat(allTime, bars);
  strcat(allTime, ".");
  strcat(allTime, beats);
  strcat(allTime, ".");
  strcat(allTime, ticks);
  disp.display(allTime);
}

void setup() {
  Control_Surface.begin(); // Initialize Control Surface
  disp.begin(); 
  // No need to initialize the MAX7219 or to set pinModes, all of this
  // is handled by Control Surface.
}

void loop() {
  Control_Surface.loop(); // Update the Control Surface
  timecode();
}