Velleman VM207 Mode D'emploi page 16

Dans la fonction setup, la partie la plus importante du code est la fonction matrix.begin() permettant
d'initialiser le panneau. Le code qui suit fait référence au contenu graphique affiché sur le panneau. Compilez
et téléversez le code sur l'Arduino Uno. Si nécessaire, copiez le code complet ci-dessous:
// Adafruit_NeoMatrix example for single NeoPixel Shield.
// Scrolls 'Howdy' across the matrix in a portrait (vertical) orientation.
#include <Adafruit_GFX.h>
#include <Adafruit_NeoMatrix.h>
#include <Adafruit_NeoPixel.h>
#ifndef PSTR
#define PSTR // Make Arduino Due happy
#endif
#define PIN 6
// MATRIX DECLARATION:
// Parameter 1 = width of NeoPixel matrix
// Parameter 2 = height of matrix
// Parameter 3 = pin number (most are valid)
// Parameter 4 = matrix layout flags, add together as needed:
// NEO_MATRIX_TOP, NEO_MATRIX_BOTTOM, NEO_MATRIX_LEFT, NEO_MATRIX_RIGHT:
// Position of the FIRST LED in the matrix; pick two, e.g.
// NEO_MATRIX_TOP + NEO_MATRIX_LEFT for the top-left corner.
// NEO_MATRIX_ROWS, NEO_MATRIX_COLUMNS: LEDs are arranged in horizontal
// rows or in vertical columns, respectively; pick one or the other.
// NEO_MATRIX_PROGRESSIVE, NEO_MATRIX_ZIGZAG: all rows/columns proceed
// in the same order, or alternate lines reverse direction; pick one.
// See example below for these values in action.
// Parameter 5 = pixel type flags, add together as needed:
// NEO_KHZ800
// NEO_KHZ400
// NEO_GRB
// NEO_RGB
// Example for NeoPixel Shield.
// as a 5x8 tall matrix, with the USB port positioned at the top of the
// Arduino. When held that way, the first pixel is at the top right, and
// lines are arranged in columns, progressive order.
// 800 KHz (v2) pixels that expect GRB color data.
Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(8, 8, PIN,
NEO_MATRIX_TOP
NEO_MATRIX_ROWS + NEO_MATRIX_PROGRESSIVE,
NEO_GRB
const uint16_t colors[] = {
matrix.Color(255, 0, 0), matrix.Color(0, 255, 0), matrix.Color(0, 0, 255) };
MODE D'EMPLOI K8403
800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
Pixels are wired for GRB bitstream (most NeoPixel products)
Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
In this application we' d like to use it
+ NEO_MATRIX_LEFT +
+ NEO_KHZ800);
The shield uses
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