ロボット制御⑩ Arduino UNO R4 Wifi を使ってみる
今回は、無線が使えるようになったArduino UNO R4 Wifiを購入して使ってみました。

/*
  Hellow World!
*/

void setup() {
  Serial.begin(115200);
  delay(500);
}

void loop() {
  Serial.println("Hello World!");
}

/*
  LED Matrix Sample Programe 01
  for Arduino UNO R4 Wifi
*/
#include <Arduino_LED_Matrix.h>

ArduinoLEDMatrix matrix;

byte frame[8][12] = {
  { 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0 },
  { 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0 },
  { 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0 },
  { 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0 },
  { 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0 },
  { 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0 },
  { 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0 },
  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
};

void setup() {
  Serial.begin(115200);
  matrix.begin();
}

void loop() {
  matrix.renderBitmap(frame, 8, 12);
  delay(1000);
  matrix.clear();
  delay(1000);
}

/*
  LED Matrix Sample Program 02.
  for Arduino UNO R4 Wifi
*/
#include <Arduino_LED_Matrix.h>

ArduinoLEDMatrix matrix;

unsigned long frame[] = {
  0x3184a444,
  0x42081100,
  0xa0040000
};

void setup() {
  Serial.begin(115200);
  matrix.begin();
  for (int b = 0; b < 3; b++) {
    Serial.println(frame[b], BIN);
  }
}

void loop() {
  matrix.loadFrame(frame);
  delay(500);
  matrix.clear();
  delay(500);
}

/*
  LED Matrix Sample Program 03.
  for Arduino UNO R4 Wifi
*/
#include <Arduino_LED_Matrix.h>
#include "animation.h"

ArduinoLEDMatrix matrix;

void setup() {
  Serial.begin(115200);
  matrix.loadSequence(animation);
  matrix.begin();
  matrix.play(true);
}

void loop() {
  delay(500);
  Serial.println(millis());
}

const uint32_t animation[][4] = {
	{
		0x4,
		0x0,
		0x0,
		66
	},
	{
		0xe,
		0x400000,
		0x0,
		66
	},
	{
		0x1b01f,
		0xe00400,
		0x0,
		66
	},
	{
		0x1103b83f,
		0x81f00e00,
		0x40000000,
		66
	},
	{
		0x3187bc7f,
		0xc3f81f00,
		0xe0040000,
		66
	},
	{
		0x71cfbeff,
		0xe7fc3f81,
		0xf00e0040,
		66
	},
	{
		0xfbefffff,
		0xfffe7fc3,
		0xf81f00e0,
		66
	},
	{
		0xfbefffff,
		0xffffffe7,
		0xfc3f81f0,
		66
	},
	{
		0xffffffff,
		0xffffffff,
		0xfe7fc3f8,
		66
	},
	{
		0xffffffff,
		0xffffffff,
		0xffffe7fc,
		66
	},
	{
		0xffffffff,
		0xffffffff,
		0xfffffffe,
		66
	},
	{
		0xffffffff,
		0xffffffff,
		0xffffffff,
		66
	}
};

/*
  LED Matrix Sample Program 04.
  for Arduino UNO R4 Wifi.
  Scrolling Text Example.
*/
#include <ArduinoGraphics.h>
#include <Arduino_LED_Matrix.h>

ArduinoLEDMatrix matrix;

void setup() {
  Serial.begin(115200);
  matrix.begin();

  matrix.beginDraw();
  matrix.stroke(0xFFFFFFFF);
  const char text[] = "UNO r4";
  matrix.textFont(Font_4x6);
  matrix.beginText(0, 1, 0xFFFFFF);
  matrix.println(text);
  matrix.endText();
  matrix.endDraw();
  delay(2000);
}

void loop() {
  matrix.beginDraw();
  matrix.stroke(0xFFFFFFFF);
  matrix.textScrollSpeed(50);

  // add the text
  const char text[] = "    Hello World!    ";
  matrix.textFont(Font_5x7);
  matrix.beginText(0, 1, 0xFFFFFF);
  matrix.println(text);
  matrix.endText(SCROLL_LEFT);

  matrix.endDraw();
}

//arduino_secrets.h header file
#define SECRET_SSID "yournetwork"
#define SECRET_PASS "yourpassword"

/*
  WiFi Sample Program 01
  for Arduino UNO R4 Wifi.
  Simple Webserver
*/
#include <WiFiS3.h>
#include "arduino_screts.h"

char ssid[] = SECRET_SSID;    // your network ssid (name)
char pass[] = SECRET_PASS;    // your network password (use for WPA/WAP2, or use as key for WEP)
int keyIndex = 0;             // your network key index number (needed only for WEP)

int led = LED_BUILTIN;
int status = WL_IDLE_STATUS;
WiFiServer server(80);

void setup() {
  Serial.begin(115200);
  pinMode(led, OUTPUT);

  // check for the WiFi module:
  if (WiFi.status() == WL_NO_MODULE) {
    Serial.println("Communication with WiFi module failed!");
    while (true);    // don't continue
  }
  String fv = WiFi.firmwareVersion();
  if (fv < WIFI_FIRMWARE_LATEST_VERSION) {
    Serial.println("Please upgrade the firmware");
  }

  // attempt to connect to WiFi network:
  while (status != WL_CONNECTED) {
    Serial.print("Attempting to connect to Network named: ");
    Serial.println(ssid);
    // Connect to WPA/WPA2 network.
    status = WiFi.begin(ssid, pass);
    delay(10000);   // wait 10 seconds for connection;
  }
  server.begin();
  printWifiStatus();
}

void loop() {
  WiFiClient client = server.available();  // listen for incoming clients
  if (client) {
    Serial.println("new client");
    String currentLine = "";
    while (client.connected()) {
      char c = client.read();
      Serial.write(c);
      if (c == '\n') {
        if (currentLine.length() == 0) {
          // the headers of the HTTP response:
          client.println("HTTP/1.1 200 OK");
          client.println("Context-type:text/html");
          client.println();
          // the content of the HTTP response:
          client.print("<p style=\"font-size:7vw;\">Click <a href=\"/H\">here</a> turn the LED on<br></p>");
          client.print("<p style=\"font-size:7vw;\">Click <a href=\"/L\">here</a> turn the LED off<br></p>");
          client.println();
          // break out of the while loop:
          break;
        } else {
          // then clear currentLine:
          currentLine = "";
        }
      } else if (c != '\r') {
        currentLine += c;
      }

      // Check to see if the client request was "GET /H" or "GET /L":
      if (currentLine.endsWith("GET /H")) {
        digitalWrite(led, HIGH);
      }
      if (currentLine.endsWith("GET /L")) {
        digitalWrite(led, LOW);
      }
    }
    // close the connection
    client.stop();
    Serial.println("client disconnected");
  }
}

void printWifiStatus() {
  // print the SSID of the network you're attached to:
  Serial.print("SSID: ");
  Serial.println(WiFi.SSID());
  // print your board's IP address:
  IPAddress ip = WiFi.localIP();
  Serial.print("IP Address: ");
  Serial.println(ip);
  // print the received signal strength:
  long rssi = WiFi.RSSI();
  Serial.print("signal strength (RSSI): ");
  Serial.print(rssi);
  Serial.println(" dBm");
  // print where to go in a browser:
  Serial.print("To see this page in action, open a browser to http://");
  Serial.println(ip);
}