Create bbn_m5atomS3_lite_ethernet_webserver.ino

bareboat-necessities · Jan 26, 2025 · 8a7388d · 8a7388d
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commit 8a7388d
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diff --git a/bbn_m5atomS3_lite_ethernet_webserver/bbn_m5atomS3_lite_ethernet_webserver.ino b/bbn_m5atomS3_lite_ethernet_webserver/bbn_m5atomS3_lite_ethernet_webserver.ino
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+/**
+   based on:
+
+   @file HTTP.ino
+   @author SeanKwok ([email protected])
+   @brief M5AtomS3 Atomic PoE Base HTTP Test
+   @version 0.1
+   @date 2023-12-13
+
+
+   @Hardware: M5AtomS3 + Atomic PoE Base
+   @Platform Version: Arduino M5Stack Board Manager v2.0.9
+   @Dependent Library:
+   M5GFX: https://github.com/m5stack/M5GFX
+   M5Unified: https://github.com/m5stack/M5Unified
+   M5AtomS3: https://github.com/m5stack/M5AtomS3
+   M5_Ethernet: https://github.com/m5stack/M5-Ethernet
+*/
+
+#include <M5AtomS3.h>  // M5AtomLiteS3
+//#include <M5Atom.h>  // M5AtomLite
+
+#include <Arduino.h>
+#include <SPI.h>
+#include <M5_Ethernet.h>
+#include <WebServer.h>
+
+// M5AtomLiteS3
+#define SCK  5
+#define MISO 7
+#define MOSI 8
+#define CS   6
+
+// M5AtomLite
+//#define SCK  22
+//#define MISO 23
+//#define MOSI 33
+//#define CS   19
+
+byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
+
+EthernetServer server(80);
+
+void header_page(EthernetClient client, int request_status = 200) {   // The first half of the common PHP file
+  client.println("HTTP/1.1 " + String(request_status) + " Not found");
+  client.println("Content-Type: text/html");
+  client.println("Connection: close");  // the connection will be closed after completion of the response
+  client.println("Refresh: 20");  // refresh the page automatically every 5 sec
+  client.println();
+  client.println("<!DOCTYPE HTML>");
+  client.println("<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0, user-scalable=no\"><title>Control LED</title><style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}body{margin-top: 50px;} h1 {color: #444444;margin: 50px auto 30px;} h3 {color: #444444;margin-bottom: 50px;}.button {display: block;width: 80px;background-color: #3498db;border: none;color: white;padding: 13px 30px;text-decoration: none;font-size: 25px;margin: 0px auto 35px;cursor: pointer;border-radius: 4px;}.button-on {background-color: #3498db;}.button-on:active {background-color: #2980b9;}.button-off {background-color: #34495e;}.button-off:active {background-color: #2c3e50;}p {font-size: 14px;color: #888;margin-bottom: 10px;}</style></head>");
+  client.println("<html><h1>ESP32 Web Server</h1><h3>Using Station Mode</h3>");
+}
+
+void footer_page(EthernetClient client) {   // The closing lines of every page
+  client.println("</html>");
+}
+
+void handle_OnConnect(EthernetClient client) {
+  header_page(client);
+  client.println("<a class=\"button button-on\" href=\"/ledOn\">LOW</a>");
+  footer_page(client);
+  Serial.println("Connection!\nQ: OFF");
+}
+
+void handle_ledOn(EthernetClient client) {
+  header_page(client);
+  client.println("<a class=\"button button-on\" href=\"/ledOff\">HIGH</a>");
+  footer_page(client);
+  Serial.println("Q: ON");
+}
+
+void handle_ledOff(EthernetClient client) {
+  header_page(client);
+  client.println("<a class=\"button button-on\" href=\"/ledOn\">LOW</a>");
+  footer_page(client);
+  Serial.println("Q: OFF");
+}
+
+void handle_NotFound(EthernetClient client, String url) {
+  header_page(client, 400);
+  client.println("<a>The path " + url + " doesn't exist</a>");
+  Serial.println("Error, unrecognised path");
+}
+
+void setup() {
+  Serial.begin(115200);
+
+  Serial.println("Initializing SPI...");
+  SPI.begin(SCK, MISO, MOSI, -1);
+  Serial.println("Initializing ethernet...");
+  Ethernet.init(CS);
+
+  while (Ethernet.begin(mac) != 1) {
+    Serial.println("Error getting IP address via DHCP, trying again...");
+    delay(2000);
+  }
+
+  // Check for Ethernet hardware present
+  if (Ethernet.hardwareStatus() == EthernetNoHardware) {
+    Serial.println(
+      "Ethernet shield was not found.  Sorry, can't run without "
+      "hardware. :(");
+    while (true) {
+      delay(1);  // do nothing, no point running without Ethernet hardware
+    }
+  }
+  if (Ethernet.linkStatus() == LinkOFF) {
+    Serial.println("Ethernet cable is not connected.");
+  }
+
+  // start the server
+  server.begin();
+  Serial.print("Server is at ");
+  Serial.println(Ethernet.localIP());
+}
+
+void loop() {
+  // listen for incoming clients
+  EthernetClient client = server.available();
+  if (client) {
+    //Serial.println("new client");
+    String client_message = "";
+    int argument_reading = 0;
+
+    // An http request ends with a blank line
+    boolean currentLineIsBlank = true;
+    while (client.connected()) {
+      if (client.available()) {
+        char c = client.read();
+
+        // get arguments. note: path arguments must not have any blank spaces
+        if (String(c) == " " || String(c) == "?") argument_reading++;
+        if (argument_reading == 1 && String(c) != " ") client_message = client_message + c;
+
+        // check end of request
+        if (c == '\n' && currentLineIsBlank) {
+          // Send response
+          // handle arguments
+          if (client_message == "/") handle_OnConnect(client);
+          else if (client_message == "/ledOn") handle_ledOn(client);
+          else if (client_message == "/ledOff") handle_ledOff(client);
+          else handle_NotFound(client, client_message);
+          break;
+        }
+        if (c == '\n') {
+          // you're starting a new line
+          currentLineIsBlank = true;
+        } else if (c != '\r') {
+          // you've gotten a character on the current line
+          currentLineIsBlank = false;
+          //Serial.write("We're here");
+        }
+      }
+    }
+    // give the web browser time to receive the data
+    delay(4);
+    // close the connection:
+    client.stop();
+  }
+}