Arduino > Wemos D1 Mini Matrix Shield
Contents (hide)
- 1. Installation
- 2. Code de base
- 3. Dessiner des images
- 4. Exemples
- 4.1 Demo
- 4.2 Neige
- 4.3 Serveur pour afficher du texte
- 4.4 Image par UDP
1. Installation
- Installer la logithèque «wemos_matrix_gfx» ici
ou avec le "library manager".
- Installer aussi la logithèque «adafruit gfx library» avec le "library manager".
2. Code de base
Global :
// INCLUDE LIBRARY: #include <Adafruit_GFX.h> #include <WEMOS_Matrix_GFX.h> // INSTANTIATE MATRIX OBJECT: MLED matrix(7); // SET TO MAXIMUM INTENSITY (7).
Dans loop() :
// EFFACER LE CONTENU PRECEDENT:
matrix.clear();
// DESSINER UN PIXEL:
matrix.drawPixel(x, y, LED_ON);
// DESSINER UNE LIGNE:
matrix.drawLine( x0, y0, x1, y1, LED_ON);
// DESSINER UN RECTANGLE VIDE:
matrix.drawRect( x , y, width, height , LED_ON);
// REMPLIR UN RECTANGLE:
matrix.fillRect(x, y, width, height , LED_ON);
// DESSINER UN CERCLE VIDE:
matrix.drawCircle( x , y, radius, LED_ON);
// REMPLIR UN CERCLE:
matrix.fillCircle(x, y, radius, LED_ON);
// DESSINER UN TRIANGLE VIDE:
matrix.drawTriangle(x0, y0, x1, y1, x2, y2, LED_ON );
// REMPLIR UN TRIANGLE:
matrix.fillTriangle(ux0, y0, x1, y1, x2, y2, LED_ON);
// TEXTE:
matrix.setTextSize(1);
matrix.setTextWrap(false); // NO TEXT WRAP
matrix.setTextColor(LED_ON);
matrix.setCursor(x,y);
matrix.print("text");
// METTRE A JOUR LES PIXELS A LA MATRICE:
matrix.writeDisplay(); // write the changes we made to the display
// FOR MORE, SEE:
// https://learn.adafruit.com/adafruit-gfx-graphics-library/graphics-primitives
3. Dessiner des images
Définir les images dans l'espace global (avant setup() ) :
// EN BINAIRE :
const unsigned char image_name[] PROGMEM = {
B00111100,
B01000010,
B10100101,
B10000001,
B10100101,
B10011001,
B01000010,
B00111100 };
// OU
// EN HEXADECIMALE :
const unsigned char image_name [] PROGMEM = {
0xff, 0xff, 0xbd, 0xff,0xff, 0xbd, 0xc3, 0xff
};
Dans loop() :
matrix.drawBitmap(x, y, image_name , 8, 8, LED_ON);
Convertir les images avec image2cpp 
:
4. Exemples
4.1 Demo
#include <Adafruit_GFX.h>
#include <WEMOS_Matrix_GFX.h>
MLED matrix(7); //set intensity=7 (maximum)
void setup() {
Serial.begin(57600);
Serial.println("8x8 LED Matrix Test");
}
static const uint8_t PROGMEM
smile_bmp[] =
{ B00111100,
B01000010,
B10100101,
B10000001,
B10100101,
B10011001,
B01000010,
B00111100 },
neutral_bmp[] =
{ B00111100,
B01000010,
B10100101,
B10000001,
B10111101,
B10000001,
B01000010,
B00111100 },
frown_bmp[] =
{ B00111100,
B01000010,
B10100101,
B10000001,
B10011001,
B10100101,
B01000010,
B00111100 };
void loop() {
matrix.clear();
matrix.drawBitmap(0, 0, smile_bmp, 8, 8, LED_ON);
matrix.writeDisplay();
delay(500);
matrix.clear();
matrix.drawBitmap(0, 0, neutral_bmp, 8, 8, LED_ON);
matrix.writeDisplay();
delay(500);
matrix.clear();
matrix.drawBitmap(0, 0, frown_bmp, 8, 8, LED_ON);
matrix.writeDisplay();
delay(500);
matrix.clear(); // clear display
matrix.drawPixel(0, 0, LED_ON);
matrix.writeDisplay(); // write the changes we just made to the display
delay(500);
matrix.clear();
matrix.drawLine(0,0, 7,7, LED_ON);
matrix.writeDisplay(); // write the changes we just made to the display
delay(500);
matrix.clear();
matrix.drawRect(0,0, 8,8, LED_ON);
matrix.fillRect(2,2, 4,4, LED_ON);
matrix.writeDisplay(); // write the changes we just made to the display
delay(500);
matrix.clear();
matrix.drawCircle(3,3, 3, LED_ON);
matrix.writeDisplay(); // write the changes we just made to the display
delay(500);
matrix.setTextSize(1);
matrix.setTextWrap(false); // we dont want text to wrap so it scrolls nicely
matrix.setTextColor(LED_ON);
for (int8_t x=0; x>=-36; x--) {
matrix.clear();
matrix.setCursor(x,0);
matrix.print("Hello");
matrix.writeDisplay();
delay(100);
}
matrix.setRotation(3);
for (int8_t x=7; x>=-36; x--) {
matrix.clear();
matrix.setCursor(x,0);
matrix.print("World");
matrix.writeDisplay();
delay(100);
}
matrix.setRotation(0);
}
4.2 Neige
4.3 Serveur pour afficher du texte
Changer le ssid et le mot de passe pour votre configuration réseau!
4.4 Image par UDP
Code Arduino
Changer le ssid et le mot de passe pour votre configuration réseau! Choisir aussi une adresse IP unique!
// SEND AN ASCII MASSAGE BY UDP TO DRAW THE PIXELS.
// A AN ASCII MASSAGE IS A MESSAGE THAT STARTS WITH AN "ADDRESS".
// IT IS THEN FOLLOWED BY VALUES SEPARATED BY SPACES.
// IT ENDS WITH A NEW LINE (ASCII CODE 10).
// DRAW AN IMAGE
////////////////
// SEND THE FOLLOWING MASSAGE TO DRAW AN IMAGE:
// img row0 row1 row2 row3 row4 row5 row6 row7
// EACH rowX DATA IS A NUMBER BETWEEN 0-255 THAT REPRESENTS
// THE 8 PIXELS FOR THAT ROW.
// EXAMPLES:
// CLEAR:
// img 0 0 0 0 0 0 0 0
// FILL:
// img 255 255 255 255 255 255 255 255
// FACE:
// img 255 255 189 255 255 189 195 255
// FROWN:
// img 255 255 189 255 255 195 189 255
// DRAW A PIXEL
////////////////
// SEND THE FOLLOWING MASSAGE TO DRAW A PIXEL
// pix x y state
// x AND y IS THE POSITION OF THE PIXEL.
// state IS EITHER 0 OR 1 (OFF OR ON).
// INCLUDE ESP8266WiFi:
#include <ESP8266WiFi.h>
const char* ssid = "*****";
const char* password = "*****";
IPAddress ip(10, 5, 0, 120);
IPAddress gateway(10, 5, 0, 1);
IPAddress subnet(255, 255, 255, 0);
// INCLUDE ESP8266 UDP
#include <WiFiUdp.h>
WiFiUDP udp;
// INCLUDE MASSAGE PARSER
#include <AsciiMassageParser.h>
// PACKER(FOR SENDING) AND PARSER(FOR RECEIVING) INSTANCES.
AsciiMassageParser inbound;
// WEMOS MATRIX SHIELD:
#include <Adafruit_GFX.h>
#include <WEMOS_Matrix_GFX.h>
MLED matrix(7); //set intensity=7 (maximum)
///////////
// SETUP //
///////////
void setup() {
// INITIATE SERIAL COMMUNICATION.
Serial.begin(57600);
WiFi.config(ip , gateway , subnet );
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
Serial.print("Waiting for connection: ");
Serial.print(millis());
Serial.println(" ms");
delay(50);
}
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
// START LISTENING ON UDP PORT 7777.
udp.begin(7777);
}
//////////
// LOOP //
//////////
void loop() {
// RECEIVE PACKETS OVER UDP
if ( udp.parsePacket() ) {
if ( inbound.parseStream( &udp ) ) {
if ( inbound.fullMatch("img") ) {
matrix.clear();
for ( int y = 0 ; y < 8 ; y++ ) {
byte p = inbound.nextByte();
for ( int x = 0; x < 8; x++) {
if ( bitRead(p, x) ) matrix.drawPixel( x , y , LED_ON);
}
}
matrix.writeDisplay();
} else if ( inbound.fullMatch("pix") ) {
byte x = inbound.nextByte();
byte y = inbound.nextByte();
byte state = inbound.nextByte();
matrix.drawPixel( x , y , state);
matrix.writeDisplay();
}
}
}
}
Code Max
Choisir l'adresse IP de votre Wemos!
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