From 93e0abe9bce6378baf01b4e9f2e43919a33489a9 Mon Sep 17 00:00:00 2001
From: Jarda
Date: Mon, 14 Aug 2023 23:59:03 +0200
Subject: [PATCH] Add code examples - esphome and webserver
---
.../ESPlan_webserver_SD_read.ino | 244 ++++++++++++++++++
SW/ESPlan_webserver_SD_read/page.h | 41 +++
SW/esplan_esphome.yaml | 51 ++++
3 files changed, 336 insertions(+)
create mode 100644 SW/ESPlan_webserver_SD_read/ESPlan_webserver_SD_read.ino
create mode 100644 SW/ESPlan_webserver_SD_read/page.h
create mode 100644 SW/esplan_esphome.yaml
diff --git a/SW/ESPlan_webserver_SD_read/ESPlan_webserver_SD_read.ino b/SW/ESPlan_webserver_SD_read/ESPlan_webserver_SD_read.ino
new file mode 100644
index 0000000..14b98d3
--- /dev/null
+++ b/SW/ESPlan_webserver_SD_read/ESPlan_webserver_SD_read.ino
@@ -0,0 +1,244 @@
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include "page.h"
+
+const char *host = "esplan"; // Connect to http://ESPlan.local
+
+// SD card defines
+#define SCK 14
+#define MISO 12
+#define MOSI 13
+#define CS 15
+SPIClass spi = SPIClass(HSPI);
+
+// Set web server port number to 80
+WebServer server(80);
+
+// LAN8720A parameters
+#define ETH_POWER_PIN -1
+#define ETH_ADDR 0
+#define ETH_MDC_PIN 23
+#define ETH_MDIO_PIN 18
+#define ETH_NRST_PIN 5
+
+static bool eth_connected = false;
+
+void WiFiEvent(WiFiEvent_t event)
+{
+ switch (event) {
+ case ARDUINO_EVENT_ETH_START:
+ Serial.println("ETH Started");
+ //set eth hostname here
+ ETH.setHostname("esplan");
+ break;
+ case ARDUINO_EVENT_ETH_CONNECTED:
+ Serial.println("ETH Connected");
+ break;
+ case ARDUINO_EVENT_ETH_GOT_IP:
+ Serial.print("ETH MAC: ");
+ Serial.print(ETH.macAddress());
+ Serial.print(", IPv4: ");
+ Serial.print(ETH.localIP());
+ if (ETH.fullDuplex()) {
+ Serial.print(", FULL_DUPLEX");
+ }
+ Serial.print(", ");
+ Serial.print(ETH.linkSpeed());
+ Serial.println("Mbps");
+ eth_connected = true;
+ break;
+ case ARDUINO_EVENT_ETH_DISCONNECTED:
+ Serial.println("ETH Disconnected");
+ eth_connected = false;
+ break;
+ case ARDUINO_EVENT_ETH_STOP:
+ Serial.println("ETH Stopped");
+ eth_connected = false;
+ break;
+ default:
+ break;
+ }
+}
+
+void readFile(fs::FS &fs, const char *path)
+{
+ char text[100] = {0};
+ char out[100] = {0};
+ uint8_t i = 0;
+ Serial.printf("Reading file: %s\n", path);
+
+ File file = fs.open(path);
+ if (!file)
+ {
+ Serial.println("Failed to open file for reading");
+ return;
+ }
+
+ Serial.print("Read from file: ");
+ while (file.available())
+ {
+ text[i] = file.read();
+ if(text[i++] == '\n')
+ {
+ Serial.print(text);
+ sprintf(out, "%s
", text);
+ server.sendContent(out);
+ memset(text, 0, 99*sizeof(*text));
+ memset(out, 0, 99*sizeof(*out));
+ i = 0;
+ }
+ }
+ file.close();
+}
+
+void writeFile(fs::FS &fs, const char *path, const char *message)
+{
+ Serial.printf("Writing file: %s\n", path);
+
+ File file = fs.open(path, FILE_WRITE);
+ if (!file)
+ {
+ Serial.println("Failed to open file for writing");
+ return;
+ }
+ if (file.print(message))
+ {
+ Serial.println("File written");
+ }
+ else
+ {
+ Serial.println("Write failed");
+ }
+ file.close();
+}
+
+uint8_t appendFile(fs::FS &fs, const char *path, const char *message)
+{
+ Serial.printf("Appending to file: %s\n", path);
+
+ File file = fs.open(path, FILE_APPEND);
+ if (!file)
+ {
+ Serial.println("Failed to open file for appending");
+ return 1;
+ }
+ if (file.print(message))
+ {
+ Serial.println("Message appended");
+ file.close();
+ return 0;
+ }
+ else
+ {
+ Serial.println("Append failed");
+ file.close();
+ return 1;
+ }
+}
+
+void handleRoot()
+{
+ server.setContentLength(CONTENT_LENGTH_UNKNOWN);
+ server.send_P(200, "text/html", index_html);
+ spi.begin(SCK, MISO, MOSI, CS);
+ if (SD.begin(CS, spi))
+ {
+ Serial.println("SD Card initialized.");
+ readFile(SD, "/output.txt");
+ }
+ else
+ {
+ server.sendContent("SD card not found!
");
+ }
+ server.sendContent("
+ ");
+ server.sendContent(""); // This ends sending
+ SD.end();
+ spi.end();
+}
+
+void handleSubmit()
+{
+ char text[100] = {0};
+ spi.begin(SCK, MISO, MOSI, CS);
+ if (SD.begin(CS, spi))
+ {
+ Serial.println("SD Card initialized.");
+ sprintf(text, "%s\n", server.arg(0).c_str());
+ Serial.println(server.arg(0));
+ if (appendFile(SD, "/output.txt", text))
+ {
+ writeFile(SD, "/output.txt", text);
+ }
+ }
+ SD.end();
+ spi.end();
+ handleRoot();
+}
+
+void handleNotFound()
+{
+ String message = "Error\n\n";
+ message += "URI: ";
+ message += server.uri();
+ message += "\nMethod: ";
+ message += (server.method() == HTTP_GET) ? "GET" : "POST";
+ message += "\nArguments: ";
+ message += server.args();
+ message += "\n";
+ for (uint8_t i = 0; i < server.args(); i++)
+ {
+ message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
+ }
+ server.send(404, "text/plain", message);
+}
+
+void DNS_setup()
+{
+ if (MDNS.begin(host))
+ {
+ MDNS.addService("http", "tcp", 80);
+ Serial.println("MDNS responder started");
+ Serial.print("You can now connect to http://");
+ Serial.print(host);
+ Serial.println(".local");
+ }
+}
+
+void setup()
+{
+ Serial.begin(115200);
+ // For reseting LAN8720A
+ pinMode(ETH_NRST_PIN, OUTPUT);
+ digitalWrite(ETH_NRST_PIN, LOW);
+ delay(500);
+ digitalWrite(ETH_NRST_PIN, HIGH);
+
+ WiFi.onEvent(WiFiEvent);
+ ETH.begin(ETH_ADDR, ETH_POWER_PIN, ETH_MDC_PIN, ETH_MDIO_PIN, ETH_PHY_LAN8720, ETH_CLOCK_GPIO17_OUT);
+
+ DNS_setup();
+
+ server.on("/", handleRoot); // Main page
+
+ server.on("/get", handleSubmit); // Function done on GET request
+
+ server.onNotFound(handleNotFound); // Function done when hangle is not found
+
+ server.begin();
+ Serial.println("HTTP server started");
+}
+
+void loop()
+{
+ if(eth_connected)
+ {
+ server.handleClient();
+ }
+ delay(2); // allow the cpu to switch to other tasks
+}
\ No newline at end of file
diff --git a/SW/ESPlan_webserver_SD_read/page.h b/SW/ESPlan_webserver_SD_read/page.h
new file mode 100644
index 0000000..de0a7c5
--- /dev/null
+++ b/SW/ESPlan_webserver_SD_read/page.h
@@ -0,0 +1,41 @@
+#ifndef page_h
+#define page_h
+
+
+const char index_html[] PROGMEM = R"rawliteral(
+
+
+