ivoras/esp8266dash.ino

## esp8266dash.ino
// For use with this EasyEDA project: https://easyeda.com/account/project/setting/basic?project=c5413ffccb63491c831e6907e39ede2f
#include <EEPROM.h>
#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>
#include <ESP8266WebServer.h>
#include <ESP8266HTTPClient.h>

#define PIN_POWER 2
#define PIN_LED 1
#define PIN_CONFIG 14

#define EEPROM_CONFIG_SIGNATURE 0x54
#define EEPROM_CONFIG_VERSION 1

struct DashConfig {
  byte signature;
  byte ver;
  char ssid[50];
  char password[50];
};

ESP8266WiFiMulti wifi;
ESP8266WebServer server(80);

bool config_mode = false;
bool led_state = false;
uint32_t led_time = 0;
int count;
struct DashConfig cfg;


bool read_eeprom_config() {
  byte *b = (byte*)&cfg;
  for (int i = 0; i < sizeof(cfg); i++)
    *(b++) = EEPROM.read(i);
  return cfg.signature == EEPROM_CONFIG_SIGNATURE && cfg.ver == EEPROM_CONFIG_VERSION;
}

void write_eeprom_config() {
  byte *b = (byte*)&cfg;
  for (int i = 0; i < sizeof(cfg); i++)
    EEPROM.write(i, *(b++));
  EEPROM.commit();
}

void led_on() {
  digitalWrite(PIN_LED, LOW);
}

void led_off() {
  digitalWrite(PIN_LED, HIGH);
}

String htmlHead(String title) {
  String html;

  html += "<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n<meta charset=\"utf-8\">\n<meta http-equiv=\"x-ua-compatible\" content=\"ie=edge\">\n<title>" + title + "</title>\n";
  html += "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n";
  html += "<style>body {background: white; margin-left: 5%; margin-right: 5%; font-family: Segoe UI, Droid Sans, Arial, sans-serif;}</style>\n";
  html += "</head><body>\n";

  return html;
}

String htmlFoot() {
  return "</body></html>";
}

void handleRoot() {
  String html = htmlHead("Akira_Dash device configuration");

  html += "<h1>Akira_Dash device configuration</h1>\n";
  html += "<form method=\"POST\" action=\"/save\">\n";
  html += "<table align=\"center\">\n";
  html += "<tr><td>Your WiFi SSID:</td><td><input name=\"ssid\" type=\"text\" value=\""; html += cfg.ssid; html += "\" size=\"20\"></td></tr>\n";
  html += "<tr><td>Your WiFi password:</td><td><input name=\"password\" type=\"password\" size=\"20\"></td></tr>\n";
  html += "<tr><td colspan=\"2\"><input type=\"submit\"></td></tr>\n";
  html += "</table>\n";
  html += "</form>\n";

  html += htmlFoot();

  server.send(200, "text/html", html);
}

void handleSave() {
  String ssid = server.arg("ssid");
  String password = server.arg("password");

  String html = htmlHead("Akira_Dash configuration saved");
  html += "<p>The configuration has been saved. You can start using the device now!</p>\n";
  html += htmlFoot();

  server.send(200, "text/html", html);

  strcpy(cfg.ssid, ssid.c_str());
  strcpy(cfg.password, password.c_str());
  cfg.signature = EEPROM_CONFIG_SIGNATURE;
  cfg.ver = EEPROM_CONFIG_VERSION;

  write_eeprom_config();
  delay(50);
  digitalWrite(PIN_POWER, LOW);
  // Bye bye.
}

void setup() {
  // put your setup code here, to run once:
  pinMode(PIN_POWER, OUTPUT);
  digitalWrite(PIN_POWER, HIGH);
  pinMode(PIN_LED, OUTPUT);
  pinMode(PIN_CONFIG, INPUT_PULLUP);

  led_on();
  delay(5);
  EEPROM.begin(512);

  wifi.addAP("SignalGrad", "Crta3000");
  config_mode = false;
  return;

  if (digitalRead(PIN_CONFIG) == LOW) {
    config_mode = true;
  } else {
    config_mode = !read_eeprom_config();
  }

  if (!config_mode) {
    wifi.addAP(cfg.ssid, cfg.password);
    return;
  }

  cfg.password[0] = '\0';
  if (cfg.signature != EEPROM_CONFIG_SIGNATURE || cfg.ver != EEPROM_CONFIG_VERSION)
    cfg.ssid[0] = '\0';

  char ap_ssid[100];
  char ap_password[100];
  sprintf(ap_ssid, "Akira_Dash_%06x", ESP.getChipId());
  sprintf(ap_password, "%06x", ESP.getChipId());

  WiFi.softAP(ap_ssid, ap_password);
  server.on("/", handleRoot);
  server.on("/save", handleSave);
  server.begin();
}

void loop() {

  if (config_mode) {
    server.handleClient();
    return;
  }

  if  ((wifi.run() == WL_CONNECTED)) {
    led_on();

    HTTPClient http;

//    USE_SERIAL.print("[HTTP] begin...\n");
    // configure traged server and url
    char url[100];
    sprintf(url, "http://www.example.com/dash/?id=%d", ESP.getChipId());
    http.begin(url); //HTTP

    // start connection and send HTTP header
    int httpCode = http.GET();

    // httpCode will be negative on error
    if(httpCode > 0) {
      // HTTP header has been send and Server response header has been handled
//      USE_SERIAL.printf("[HTTP] GET... code: %d\n", httpCode);

      // file found at server
      if(httpCode == HTTP_CODE_OK) {
          String payload = http.getString();
//          USE_SERIAL.println(payload);
      }
    } else {
//      USE_SERIAL.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
    }

    http.end();
    led_off();
    delay(200);
    digitalWrite(PIN_POWER, LOW);
  } else {
    // Keep blinking if not connected
    digitalWrite(PIN_LED, led_state ? LOW : HIGH);
    if (millis() - led_time >= 500) {
      led_state = !led_state;
      led_time = millis();
      if (++count >= 20) // Give up after 10 seconds
        digitalWrite(2, LOW);
    }
  }
}
	// For use with this EasyEDA project: https://easyeda.com/account/project/setting/basic?project=c5413ffccb63491c831e6907e39ede2f
	#include <EEPROM.h>
	#include <ESP8266WiFi.h>
	#include <ESP8266WiFiMulti.h>
	#include <ESP8266WebServer.h>
	#include <ESP8266HTTPClient.h>

	#define PIN_POWER 2
	#define PIN_LED 1
	#define PIN_CONFIG 14

	#define EEPROM_CONFIG_SIGNATURE 0x54
	#define EEPROM_CONFIG_VERSION 1

	struct DashConfig {
	byte signature;
	byte ver;
	char ssid[50];
	char password[50];
	};

	ESP8266WiFiMulti wifi;
	ESP8266WebServer server(80);

	bool config_mode = false;
	bool led_state = false;
	uint32_t led_time = 0;
	int count;
	struct DashConfig cfg;


	bool read_eeprom_config() {
	byte b = (byte)&cfg;
	for (int i = 0; i < sizeof(cfg); i++)
	*(b++) = EEPROM.read(i);
	return cfg.signature == EEPROM_CONFIG_SIGNATURE && cfg.ver == EEPROM_CONFIG_VERSION;
	}

	void write_eeprom_config() {
	byte b = (byte)&cfg;
	for (int i = 0; i < sizeof(cfg); i++)
	EEPROM.write(i, *(b++));
	EEPROM.commit();
	}

	void led_on() {
	digitalWrite(PIN_LED, LOW);
	}

	void led_off() {
	digitalWrite(PIN_LED, HIGH);
	}

	String htmlHead(String title) {
	String html;

	html += "<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n<meta charset=\"utf-8\">\n<meta http-equiv=\"x-ua-compatible\" content=\"ie=edge\">\n<title>" + title + "</title>\n";
	html += "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n";
	html += "<style>body {background: white; margin-left: 5%; margin-right: 5%; font-family: Segoe UI, Droid Sans, Arial, sans-serif;}</style>\n";
	html += "</head><body>\n";

	return html;
	}

	String htmlFoot() {
	return "</body></html>";
	}

	void handleRoot() {
	String html = htmlHead("Akira_Dash device configuration");

	html += "<h1>Akira_Dash device configuration</h1>\n";
	html += "<form method=\"POST\" action=\"/save\">\n";
	html += "<table align=\"center\">\n";
	html += "<tr><td>Your WiFi SSID:</td><td><input name=\"ssid\" type=\"text\" value=\""; html += cfg.ssid; html += "\" size=\"20\"></td></tr>\n";
	html += "<tr><td>Your WiFi password:</td><td><input name=\"password\" type=\"password\" size=\"20\"></td></tr>\n";
	html += "<tr><td colspan=\"2\"><input type=\"submit\"></td></tr>\n";
	html += "</table>\n";
	html += "</form>\n";

	html += htmlFoot();

	server.send(200, "text/html", html);
	}

	void handleSave() {
	String ssid = server.arg("ssid");
	String password = server.arg("password");

	String html = htmlHead("Akira_Dash configuration saved");
	html += "<p>The configuration has been saved. You can start using the device now!</p>\n";
	html += htmlFoot();

	server.send(200, "text/html", html);

	strcpy(cfg.ssid, ssid.c_str());
	strcpy(cfg.password, password.c_str());
	cfg.signature = EEPROM_CONFIG_SIGNATURE;
	cfg.ver = EEPROM_CONFIG_VERSION;

	write_eeprom_config();
	delay(50);
	digitalWrite(PIN_POWER, LOW);
	// Bye bye.
	}

	void setup() {
	// put your setup code here, to run once:
	pinMode(PIN_POWER, OUTPUT);
	digitalWrite(PIN_POWER, HIGH);
	pinMode(PIN_LED, OUTPUT);
	pinMode(PIN_CONFIG, INPUT_PULLUP);

	led_on();
	delay(5);
	EEPROM.begin(512);

	wifi.addAP("SignalGrad", "Crta3000");
	config_mode = false;
	return;

	if (digitalRead(PIN_CONFIG) == LOW) {
	config_mode = true;
	} else {
	config_mode = !read_eeprom_config();
	}

	if (!config_mode) {
	wifi.addAP(cfg.ssid, cfg.password);
	return;
	}

	cfg.password[0] = '\0';
	if (cfg.signature != EEPROM_CONFIG_SIGNATURE \|\| cfg.ver != EEPROM_CONFIG_VERSION)
	cfg.ssid[0] = '\0';

	char ap_ssid[100];
	char ap_password[100];
	sprintf(ap_ssid, "Akira_Dash_%06x", ESP.getChipId());
	sprintf(ap_password, "%06x", ESP.getChipId());

	WiFi.softAP(ap_ssid, ap_password);
	server.on("/", handleRoot);
	server.on("/save", handleSave);
	server.begin();
	}

	void loop() {

	if (config_mode) {
	server.handleClient();
	return;
	}

	if ((wifi.run() == WL_CONNECTED)) {
	led_on();

	HTTPClient http;

	// USE_SERIAL.print("[HTTP] begin...\n");
	// configure traged server and url
	char url[100];
	sprintf(url, "http://www.example.com/dash/?id=%d", ESP.getChipId());
	http.begin(url); //HTTP

	// start connection and send HTTP header
	int httpCode = http.GET();

	// httpCode will be negative on error
	if(httpCode > 0) {
	// HTTP header has been send and Server response header has been handled
	// USE_SERIAL.printf("[HTTP] GET... code: %d\n", httpCode);

	// file found at server
	if(httpCode == HTTP_CODE_OK) {
	String payload = http.getString();
	// USE_SERIAL.println(payload);
	}
	} else {
	// USE_SERIAL.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
	}

	http.end();
	led_off();
	delay(200);
	digitalWrite(PIN_POWER, LOW);
	} else {
	// Keep blinking if not connected
	digitalWrite(PIN_LED, led_state ? LOW : HIGH);
	if (millis() - led_time >= 500) {
	led_state = !led_state;
	led_time = millis();
	if (++count >= 20) // Give up after 10 seconds
	digitalWrite(2, LOW);
	}
	}
	}