Class LedMatrix

java.lang.Object
io.github.jabrena.juno.api.led.LedMatrix
public final class LedMatrix extends Object
The board's built-in LED matrix operations, recognized as compiler intrinsics by Juno: 12x8 on the UNO R4 WiFi and 13x8 on the UNO Q. columns() tells a program which one it was compiled for; frames are packed row by row, MSB first, into 32-bit words (columns() * 8 pixels: three words on the R4, four on the Q).

  • Method Summary

    Modifier and Type
    Method
    Description
    static void
    begin()
     
    static void
    clear()
     
    static int
    columns()
    The number of columns of the matrix on the board this program is compiled for: 12 or 13.
    static void
    loadFrame(int word0, int word1, int word2)
    Loads a frame of at most 96 pixels: loadFrame(int, int, int, int) with word3 zero.
    static void
    loadFrame(int word0, int word1, int word2, int word3)
    Loads a frame packed MSB-first into four 32-bit words, exactly as the underlying loadFrame(const uint32_t[...]) of the board's Arduino_LED_Matrix library expects: the UNO R4's 96 pixels use the first three words and ignore word3; the UNO Q's 104 pixels use all four, the last holding the final 8 pixels in its top bits.

    Methods inherited from class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Method Details

    • begin

      public static void begin()

    • columns

      public static int columns()
      The number of columns of the matrix on the board this program is compiled for: 12 or 13.

    • loadFrame

      public static void loadFrame(int word0, int word1, int word2, int word3)
      Loads a frame packed MSB-first into four 32-bit words, exactly as the underlying loadFrame(const uint32_t[...]) of the board's Arduino_LED_Matrix library expects: the UNO R4's 96 pixels use the first three words and ignore word3; the UNO Q's 104 pixels use all four, the last holding the final 8 pixels in its top bits.

    • loadFrame

      public static void loadFrame(int word0, int word1, int word2)
      Loads a frame of at most 96 pixels: loadFrame(int, int, int, int) with word3 zero.

    • clear

      public static void clear()