LEDチカチカまできたので次はWIFIでスマホからLEDを点けるに挑戦。
おいらのHTTPなどの知識が古いかも。まあ見てゆけば分かるだろう。
まずは例題ライブラリをダウンロードせよということで以下を実行。
問題なくうまく行った。pythonの版(2.7/3.5.3.6混在なmac)で何か起こるかもと思ったが問題なかった。
$>mkdir -p ~/Documents/Arduino/hardware/espressif $>cd ~/Documents/Arduino/hardware/espressif $>git clone https://github.com/espressif/arduino-esp32.git esp32 $>cd esp32 $>git submodule update --init --recursive $>cd tools $>python get.py
Arduinoを立ち上げて以下のサンプルファイルを開く。
~/Documents/Arduino/hardware/espressif/esp32/libraries/WiFi/examples/SimpleWiFiServer/SimpleWiFiServer.ino
ソース30, 31行目を家のWiFiルータのSSIDとパスワードに書きかえ。
/* WiFi Web Server LED Blink */ #include <WiFi.h> const char* ssid = "wx03-xxxxx"; const char* password = "xxxxxxxxx"; WiFiServer server(80); void setup() { Serial.begin(115200); pinMode(5, OUTPUT); // set the LED pin mode delay(10); // We start by connecting to a WiFi network Serial.println(); Serial.println(); Serial.print("Connecting to "); Serial.println(ssid); WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(""); Serial.println("WiFi connected."); Serial.println("IP address: "); Serial.println(WiFi.localIP()); server.begin(); } int value = 0; void loop(){ WiFiClient client = server.available(); // listen for incoming clients if (client) { // if you get a client, Serial.println("New Client."); // print a message out the serial port String currentLine = ""; // make a String to hold incoming data from the client while (client.connected()) { // loop while the client's connected if (client.available()) { // if there's bytes to read from the client, char c = client.read(); // read a byte, then Serial.write(c); // print it out the serial monitor if (c == '\n') { // if the byte is a newline character // if the current line is blank, you got two newline characters in a row. // that's the end of the client HTTP request, so send a response: if (currentLine.length() == 0) { // HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK) // and a content-type so the client knows what's coming, then a blank line: client.println("HTTP/1.1 200 OK"); client.println("Content-type:text/html"); client.println(); // the content of the HTTP response follows the header: client.print("<h1>Click <a href=\"/H\">here</a> to turn the LED on pin 5 on.</h1>"); client.print("<h1>Click <a href=\"/L\">here</a> to turn the LED on pin 5 off.</h1><br>"); // The HTTP response ends with another blank line: client.println(); // break out of the while loop: break; } else { // if you got a newline, then clear currentLine: currentLine = ""; } } else if (c != '\r') { // if you got anything else but a carriage return character, currentLine += c; // add it to the end of the currentLine } // Check to see if the client request was "GET /H" or "GET /L": if (currentLine.endsWith("GET /H")) { digitalWrite(5, HIGH); // GET /H turns the LED on } if (currentLine.endsWith("GET /L")) { digitalWrite(5, LOW); // GET /L turns the LED off } } } // close the connection: client.stop(); Serial.println("Client Disconnected."); } }
●シリアルモニタに表示
ブラウザにESPのIP(以下赤文字)を入れると以下表示されてくる。
※ESP32側は5ピンにLEDを付けておく
Click here to turn the LED on pin 5 on.
Click here to turn the LED on pin 5 off.
●シリアルモニタ表示(リセットして点灯をクリックを実施)
畳んでいるモニタ表示をオープン
rst:0x1 (POWERON_RESET),boot:0x12 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0018,len:4
load:0x3fff001c,len:952
load:0x40078000,len:6084
load:0x40080000,len:7936
entry 0x40080310
Connecting to wx03-bc7caa
………….
WiFi connected.
IP address:
192.168.179.7
New Client.
GET /H HTTP/1.1
Host: 192.168.179.7
Connection: keep-alive
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Referer: http://192.168.179.7/L
Accept-Encoding: gzip, deflate
Accept-Language: ja,en-US;q=0.9,en;q=0.8
Client Disconnected.
New Client.
GET /favicon.ico HTTP/1.1
Host: 192.168.179.7
Connection: keep-alive
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36
Accept: image/webp,image/apng,image/*,*/*;q=0.8
Referer: http://192.168.179.7/H
Accept-Encoding: gzip, deflate
Accept-Language: ja,en-US;q=0.9,en;q=0.8
Client Disconnected.