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Captive Portal_ESP32_LED_Matrix.ino
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Captive Portal_ESP32_LED_Matrix.ino
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#include <WiFi.h>
#include <WiFiClient.h>
#include <WebServer.h>
#include <ESPmDNS.h>
#include <SPIFFS.h>
#include <DNSServer.h>
#include <EEPROM.h>
//#include <Adafruit_NeoPixel.h>
#include <FastLED.h>
#define GPIO_OUT_W1TS_REG (DR_REG_GPIO_BASE + 0x0008)
#define GPIO_OUT_W1TC_REG (DR_REG_GPIO_BASE + 0x000c)
//#define PIXEL_PIN 17 // Digital IO pin connected to the NeoPixels.
#define LED_PIN 17
#define COLOR_ORDER GRB
#define CHIPSET WS2812
static const byte WiFiPwdLen = 25;
static const byte APSTANameLen = 20;
struct WiFiEEPromData
{
bool APSTA = true; // Access Point or Sation Mode - true AP Mode
bool PwDReq = false; // PasswordRequired
bool CapPortal = true ; //CaptivePortal on in AP Mode
char APSTAName[APSTANameLen]; // STATION /AP Point Name TO cONNECT, if definded
char WiFiPwd[WiFiPwdLen]; // WiFiPAssword, if definded
char ConfigValid[3]; //If Config is Vaild, Tag "TK" is required"
};
struct BMPHeader // BitMapStucture
{
uint32_t fileSize; // Serial.print("File size: ");
uint32_t creatorBytes; //
uint32_t imageOffset; // Start of image data "Image Offset:
uint32_t headerSize; // Serial.print("Header size: ");
uint32_t width;
uint32_t height;
uint16_t planes;
uint16_t depth; // bits per pixel
uint32_t format;
};
/* hostname for mDNS. Should work at least on windows. Try http://esp8266.local */
const char *ESPHostname = "ESP32";
// DNS server
const byte DNS_PORT = 53;
DNSServer dnsServer;
//Conmmon Paramenters
bool SoftAccOK = false;
// Web server
WebServer server(80);
/* Soft AP network parameters */
IPAddress apIP(172, 20, 0, 1);
IPAddress netMsk(255, 255, 255, 0);
/** Should I connect to WLAN asap? */
//boolean connect;
/** Last time I tried to connect to WLAN */
//long lastConnectTry = 0;
unsigned long currentMillis = 0;
unsigned long startMillis;
//const short period = 10; // Sleep after this Minutes of inactivity
/** Current WLAN status */
short status = WL_IDLE_STATUS;
File fsUploadFile; // a File object to temporarily store the received file
WiFiEEPromData MyWiFiConfig;
String getContentType(String filename); // convert the file extension to the MIME type
bool handleFileRead(String path); // send the right file to the client (if it exists)
void handleFileUpload(); // upload a new file to the SPIFFS
String temp ="";
int ScreenResWidth = 8; // LED Display xy Dimesions
int ScreenResHeight = 8;
int Pixel_Count = ScreenResWidth *ScreenResHeight; // Maximal LED'S
byte BRIGHTNESS = 100; // PresetBrightness
// Params for LED's
const uint8_t kMatrixWidth = 8;
const uint8_t kMatrixHeight = 8;
const bool kMatrixSerpentineLayout = false;
#define NUM_LEDS (kMatrixWidth * kMatrixHeight)
CRGB leds_plus_safety_pixel[ NUM_LEDS + 1];
CRGB* const leds( leds_plus_safety_pixel + 1);
// const char* Headers[] = {"User-Agent", "Connection"}; // Gewünschte Header-Elemente festlegen
//Adafruit_NeoPixel strip = Adafruit_NeoPixel(Pixel_Count, PIXEL_PIN, NEO_RGB + NEO_KHZ800);
void setup()
{
REG_WRITE(GPIO_OUT_W1TS_REG, BIT(GPIO_NUM_16)); // Guru Meditation Error Remediation set
delay(1);
REG_WRITE(GPIO_OUT_W1TC_REG, BIT(GPIO_NUM_16)); // Guru Meditation Error Remediation clear
bool ConnectSuccess = false;
bool CreateSoftAPSucc = false;
bool CInitFSSystem = false;
bool CInitHTTPServer = false;
byte len;
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB
}
Serial.println(F("Serial Interface initalized at 9600 Baud."));
FastLED.addLeds<CHIPSET, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalSMD5050);
FastLED.setBrightness( BRIGHTNESS );
FastLED.show();
// strip.begin();
// strip.setBrightness(LED_Brightness); // Set globalBRIGHTNESS
// strip.show(); // Initialize all pixels to 'off'
WiFi.setAutoReconnect (false);
WiFi.persistent(false);
WiFi.disconnect();
WiFi.setHostname(ESPHostname); // Set the DHCP hostname assigned to ESP station.
if (loadCredentials()) // Load WLAN credentials for WiFi Settings
{
Serial.println(F("Valid Credentials found."));
if (MyWiFiConfig.APSTA == true) // AP Mode
{
Serial.println(F("Access Point Mode selected."));
Serial.println(MyWiFiConfig.APSTA);
len = strlen(MyWiFiConfig.APSTAName);
MyWiFiConfig.APSTAName[len+1] = '\0';
len = strlen(MyWiFiConfig.WiFiPwd);
MyWiFiConfig.WiFiPwd[len+1] = '\0';
CreateSoftAPSucc = CreateWifiSoftAP();
} else
{
Serial.println(F("Station Mode selected."));
len = strlen(MyWiFiConfig.APSTAName);
MyWiFiConfig.APSTAName[len+1] = '\0';
len = strlen(MyWiFiConfig.WiFiPwd);
MyWiFiConfig.WiFiPwd[len+1] = '\0';
len = ConnectWifiAP();
if ( len == 3 ) { ConnectSuccess = true; } else { ConnectSuccess = false; }
}
} else
{ //Set default Config - Create AP
Serial.println(F("NO Valid Credentials found."));
SetDefaultWiFiConfig ();
CreateSoftAPSucc = CreateWifiSoftAP();
saveCredentials();
// Blink
delay(500);
}
// Initalize Filesystem
CInitFSSystem = InitalizeFileSystem();
if (!(CInitFSSystem)) {Serial.println(F("File System not initalized ! ")); }
if ((ConnectSuccess or CreateSoftAPSucc))
{
Serial.print (F("IP Address: "));
if (CreateSoftAPSucc) { Serial.println(WiFi.softAPIP());}
if (ConnectSuccess) { Serial.println(WiFi.localIP());}
InitalizeHTTPServer();
}
else
{
Serial.setDebugOutput(true); //Debug Output for WLAN on Serial Interface.
Serial.println(F("Error: Cannot connect to WLAN. Set DEFAULT Configuration."));
SetDefaultWiFiConfig();
CreateSoftAPSucc = CreateWifiSoftAP();
InitalizeHTTPServer();
SetDefaultWiFiConfig();
saveCredentials();
}
for ( int i = 0; i < 64; i++)
{
leds[i]= 0x000000;
}
FastLED.show(); // Clear Display :)
}
void InitalizeHTTPServer()
{
bool initok = false;
/* Setup web pages: root, wifi config pages, SO captive portal detectors and not found. */
server.on("/", handleRoot);
server.on("/wifi", handleWifi);
server.on("/filesystem", HTTP_GET,handleDisplayFS);
server.on("/upload", HTTP_POST, []() {
server.send(200, "text/plain", "");
}, handleFileUpload);
//if (MyWiFiConfig.CapPortal) { server.on("/generate_204", handleRoot); } //Android captive portal. Maybe not needed. Might be handled by notFound handler.
// if (MyWiFiConfig.CapPortal) { server.on("/favicon.ico", handleRoot); } //Another Android captive portal. Maybe not needed. Might be handled by notFound handler. Checked on Sony Handy
// if (MyWiFiConfig.CapPortal) { server.on("/fwlink", handleRoot); } //Microsoft captive portal. Maybe not needed. Might be handled by notFound handler.
server.on("/generate_204", handleRoot); //Android captive portal. Maybe not needed. Might be handled by notFound handler.
server.on("/favicon.ico", handleRoot); //Another Android captive portal. Maybe not needed. Might be handled by notFound handler. Checked on Sony Handy
server.on("/fwlink", handleRoot); //Microsoft captive portal. Maybe not needed. Might be handled by notFound handler.
server.onNotFound ( handleNotFound );
// Speicherung Header-Elemente anfordern
// server.collectHeaders(Headers, sizeof(Headers)/ sizeof(Headers[0]));
server.begin(); // Web server start
}
boolean InitalizeFileSystem() {
bool initok = false;
initok = SPIFFS.begin();
delay(200);
if (!(initok))
{
Serial.println(F("Format SPIFFS"));
SPIFFS.format();
initok = SPIFFS.begin();
}
return initok;
}
boolean CreateWifiSoftAP()
{
WiFi.disconnect();
Serial.print(F("Initalize SoftAP "));
if (MyWiFiConfig.PwDReq)
{
SoftAccOK = WiFi.softAP(MyWiFiConfig.APSTAName, MyWiFiConfig.WiFiPwd); // Passwortlänge mindestens 8 Zeichen !
} else
{
SoftAccOK = WiFi.softAP(MyWiFiConfig.APSTAName); // Access Point WITHOUT Password
// Overload Function:; WiFi.softAP(ssid, password, channel, hidden)
}
delay(2000); // Without delay I've seen the IP address blank
WiFi.softAPConfig(apIP, apIP, netMsk);
if (SoftAccOK)
{
//Serial.println("IP Adress: " + WiFi.softAPIP());
//Serial.println(MyWiFiConfig.APSTAName);
//Serial.println(MyWiFiConfig.WiFiPwd);
/* Setup the DNS server redirecting all the domains to the apIP */
dnsServer.setErrorReplyCode(DNSReplyCode::NoError);
dnsServer.start(DNS_PORT, "*", apIP);
Serial.println(F("successful."));
// Serial.setDebugOutput(true); // Debug Output for WLAN on Serial Interface.
} else
{
Serial.println(F("Soft AP Error."));
Serial.println(MyWiFiConfig.APSTAName);
Serial.println(MyWiFiConfig.WiFiPwd);
}
return SoftAccOK;
}
byte ConnectWifiAP()
{
Serial.println(F("Initalizing Wifi Client."));
byte connRes = 0;
byte i = 0;
WiFi.disconnect();
WiFi.softAPdisconnect(true); // Function will set currently configured SSID and password of the soft-AP to null values. The parameter is optional. If set to true it will switch the soft-AP mode off.
delay(500);
// Serial.println("Length of PAssword = "); Serial.println(strlen(MyWiFiConfig.WiFiPwd));
// Serial.println("Size of PAssword = "); Serial.println(sizeof(MyWiFiConfig.WiFiPwd));
// Serial.println(MyWiFiConfig.WiFiPwd);
// Serial.println("Length of PAssword = "); Serial.println(strlen(pass));
// Serial.println("Size of PAssword = "); Serial.println(sizeof(pass));
// Serial.println(pass);
WiFi.begin(MyWiFiConfig.APSTAName, MyWiFiConfig.WiFiPwd);
connRes = WiFi.waitForConnectResult();
while (( connRes == 0 ) and (i != 10)) //if connRes == 0 "IDLE_STATUS - change Statius"
{
connRes = WiFi.waitForConnectResult();
delay(2000);
i++;
Serial.print(F("."));
// statement(s)
}
while (( connRes == 1 ) and (i != 10)) //if connRes == 1 NO_SSID_AVAILin - SSID cannot be reached
{
connRes = WiFi.waitForConnectResult();
delay(2000);
i++;
Serial.print(F("."));
// statement(s)
}
if (connRes == 3 ) {
WiFi.setAutoReconnect(true); // Set whether module will attempt to reconnect to an access point in case it is disconnected.
// Setup MDNS responder
if (!MDNS.begin(ESPHostname)) {
Serial.println(F("Error: MDNS"));
} else { MDNS.addService("http", "tcp", 80); }
}
while (( connRes == 4 ) and (i != 10)) //if connRes == 4 Bad Password. Sometimes happens this with corrct PWD
{
WiFi.begin(MyWiFiConfig.APSTAName, MyWiFiConfig.WiFiPwd);
connRes = WiFi.waitForConnectResult();
delay(2000);
i++;
Serial.print(F("."));
}
if (connRes == 4 ) {
Serial.println(F("STA Pwd Err"));
Serial.println(MyWiFiConfig.APSTAName);
Serial.println(MyWiFiConfig.WiFiPwd);
WiFi.disconnect();
}
// if (connRes == 6 ) { Serial.println("DISCONNECTED - Not in station mode"); }
// WiFi.printDiag(Serial);
Serial.println("");
return connRes;
}
uint16_t read16(File f)
{
// BMP data is stored little-endian, same as Arduino.
uint16_t result;
((uint8_t *)&result)[0] = f.read(); // LSB
((uint8_t *)&result)[1] = f.read(); // MSB
return result;
}
uint32_t read32(File f)
{
// BMP data is stored little-endian, same as Arduino.
uint32_t result;
((uint8_t *)&result)[0] = f.read(); // LSB
((uint8_t *)&result)[1] = f.read();
((uint8_t *)&result)[2] = f.read();
((uint8_t *)&result)[3] = f.read(); // MSB
return result;
}
BMPHeader ReadBitmapSpecs(String filename)
{
File file;
BMPHeader BMPData;
file =SPIFFS.open(filename, "r");
if (!file)
{
file.close();
// Serial.print("File not found");
return BMPData;
}
// Parse BMP header
if (read16(file) == 0x4D42) // BMP signature
{
BMPData.fileSize = read32(file);
BMPData.creatorBytes = read32(file);
BMPData.imageOffset = read32(file); // Start of image data
BMPData.headerSize = read32(file);
BMPData.width = read32(file);
BMPData.height = read32(file);
BMPData.planes = read16(file);
BMPData.depth = read16(file); // bits per pixel
BMPData.format = read32(file);
}
file.close();
return BMPData;
}
#define SD_BUFFER_PIXELS 20
void drawBitmap_SPIFFS(String filename, uint8_t x, uint8_t y)
{
File file;
uint8_t buffer[3 * SD_BUFFER_PIXELS]; // pixel buffer, size for r,g,b
bool valid = false; // valid format to be handled
bool flip = true; // bitmap is stored bottom-to-top
uint32_t pos = 0;
// uint32_t startTime = millis();
// if ((x >= display.width()) || (y >= display.height())) return;
// Serial.print("Loading image into Display.. '");
// Serial.println(filename);
file =SPIFFS.open(filename, "r");
if (!file)
{
Serial.print(F("Filesytem Error"));
return;
}
// Parse BMP header
if (read16(file) == 0x4D42) // BMP signature
{
uint32_t fileSize = read32(file);
uint32_t creatorBytes = read32(file);
uint32_t imageOffset = read32(file); // Start of image data
uint32_t headerSize = read32(file);
uint32_t width = read32(file);
uint32_t height = read32(file);
uint16_t planes = read16(file);
uint16_t depth = read16(file); // bits per pixel
uint32_t format = read32(file);
if ((planes == 1) && (format == 0)) // uncompressed is handled
{
Serial.print("File size: "); Serial.println(fileSize);
Serial.print("Image Offset: "); Serial.println(imageOffset);
Serial.print("Header size: "); Serial.println(headerSize);
Serial.print("Bit Depth: "); Serial.println(depth);
Serial.print("Image size: ");
Serial.print(width);
Serial.print('x');
Serial.println(height);
// BMP rows are padded (if needed) to 4-byte boundary
uint32_t rowSize = (width * depth / 8 + 3) & ~3;
if (height < 0)
{
height = -height;
flip = false;
}
uint16_t w = width;
uint16_t h = height;
//if ((x + w - 1) >= display.width()) w = display.width() - x;
//if ((y + h - 1) >= display.height()) h = display.height() - y;
size_t buffidx = sizeof(buffer); // force buffer load
for (uint16_t row = 0; row < h; row++) // for each line
{
if (flip) // Bitmap is stored bottom-to-top order (normal BMP)
pos = imageOffset + (height - 1 - row) * rowSize;
else // Bitmap is stored top-to-bottom
pos = imageOffset + row * rowSize;
if (file.position() != pos)
{ // Need seek?
file.seek(pos,SeekSet); // if mode is SeekSet, position is set to offset bytes from the beginning.
// if mode is SeekCur, current position is moved by offset bytes.
// if mode is SeekEnd, position is set to offset bytes from the end of the
buffidx = sizeof(buffer); // force buffer reload
}
uint8_t bits;
for (uint16_t col = 0; col < w; col++) // for each pixel
{
// Time to read more pixel data?
if (buffidx >= sizeof(buffer))
{
file.read(buffer, sizeof(buffer));
buffidx = 0; // Set index to beginning
}
switch (depth)
{
case 1: // one bit per pixel b/w format
{
valid = true;
if (0 == col % 8)
{
bits = buffer[buffidx++];
}
uint16_t bw_color = bits & 0x80;
Serial.println(bw_color,HEX);
// FastLED.setPixelColor(col*row,bw_color);
// display.drawPixel(col, row, bw_color);
bits <<= 1;
}
break;
case 24: // standard BMP format
{
valid = true;
uint16_t b = buffer[buffidx++];
uint16_t g = buffer[buffidx++];
uint16_t r = buffer[buffidx++];
// uint16_t bw_color = ((r + g + b) / 3 > 0xFF / 2)
uint16_t PixelNum = (row*8)+col;
Serial.print("PixelNumber: ");
Serial.print(PixelNum);
Serial.print(" Row: ");
Serial.print(row);
Serial.print(" Colum: ");
Serial.print(col);
Serial.print(" Color: ");
Serial.print(r,HEX);
Serial.print(g,HEX);
Serial.print(b,HEX);
Serial.print(" - ");
Serial.print(col,HEX);
Serial.println("");
leds[PixelNum].red = r;
leds[PixelNum].green = g;
leds[PixelNum].blue = b;
}
break;
}
} // end pixel
} // end line
FastLED.show(); // Show results :)
}
}
file.close();
if (!(valid))
{
Serial.println(F("Err: BMP"));
}
}
void handleFileUpload() { // Dateien vom Rechnenknecht oder Klingelkasten ins SPIFFS schreiben
if (server.uri() != "/upload") return;
HTTPUpload& upload = server.upload();
if (upload.status == UPLOAD_FILE_START) {
String filename = upload.filename;
if (upload.filename.length() > 30) {
upload.filename = upload.filename.substring(upload.filename.length() - 30, upload.filename.length()); // Dateinamen auf 30 Zeichen kürzen
}
Serial.println("FileUpload Name: " + upload.filename);
if (!filename.startsWith("/")) filename = "/" + filename;
//fsUploadFile = SPIFFS.open(filename, "w");
fsUploadFile = SPIFFS.open("/" + server.urlDecode(upload.filename), "w");
filename = String();
} else if (upload.status == UPLOAD_FILE_WRITE) {
// Serial.print("handleFileUpload Data: "); Serial.println(upload.currentSize);
if (fsUploadFile)
fsUploadFile.write(upload.buf, upload.currentSize);
} else if (upload.status == UPLOAD_FILE_END) {
if (fsUploadFile)
fsUploadFile.close();
// Serial.print("handleFileUpload Size: "); Serial.println(upload.totalSize);
// server.sendContent(Header);
handleDisplayFS();
}
}
void handleDisplayFS() { // HTML Filesystem
// Page: /filesystem
temp ="";
// HTML Header
server.sendHeader("Cache-Control", "no-cache, no-store, must-revalidate");
server.sendHeader("Pragma", "no-cache");
server.sendHeader("Expires", "-1");
server.setContentLength(CONTENT_LENGTH_UNKNOWN);
// HTML Content
server.send ( 200, "text/html", temp );
temp += "<!DOCTYPE HTML><html lang='de'><head><meta charset='UTF-8'><meta name= viewport content='width=device-width, initial-scale=1.0,'>";
server.sendContent(temp);
temp = "";
temp += "<style type='text/css'><!-- DIV.container { min-height: 10em; display: table-cell; vertical-align: middle }.button {height:35px; width:90px; font-size:16px}";
server.sendContent(temp);
temp = "";
temp += "body {background-color: powderblue;}</style><head><title>File System Manager</title></head>";
temp += "<h2>Serial Peripheral Interface Flash Filesystem</h2><body><left>";
server.sendContent(temp);
temp = "";
if (server.args() > 0) // Parameter wurden ubergeben
{
if (server.hasArg("delete"))
{
String FToDel = server.arg("delete");
if (SPIFFS.exists(FToDel))
{
SPIFFS.remove(FToDel);
temp += "File " + FToDel + " successfully deleted.";
} else
{
temp += "File " + FToDel + " cannot be deleted.";
}
server.sendContent(temp);
temp = "";
}
if (server.hasArg("format") and server.arg("on"))
{
SPIFFS.format();
temp += "SPI File System successfully formatted.";
server.sendContent(temp);
temp = "";
} // server.client().stop(); // Stop is needed because we sent no content length
}
temp += "<table border=2 bgcolor = white width = 400 ><td><h4>Current SPIFFS Status: </h4>";
temp += formatBytes(SPIFFS.usedBytes() * 1.05) + " of " + formatBytes(SPIFFS.totalBytes()) + " used. <br>";
temp += formatBytes((SPIFFS.totalBytes() - (SPIFFS.usedBytes() * 1.05)))+ " free. <br>";
temp += "</td></table><br>";
server.sendContent(temp);
temp = "";
// Check for Site Parameters
temp += "<table border=2 bgcolor = white width = 400><tr><th><br>";
temp += "<h4>Available Files on SPIFFS:</h4><table border=2 bgcolor = white ></tr></th><td>Filename</td><td>Size</td><td>Action </td></tr></th>";
server.sendContent(temp);
temp = "";
File root = SPIFFS.open("/");
File file = root.openNextFile();
while (file)
{
temp += "<td> <a title=\"Download\" href =\"" + String(file.name()) + "\" download=\"" + String(file.name()) + "\">" + String(file.name()) + "</a> <br></th>";
temp += "<td>"+ formatBytes(file.size())+ "</td>";
temp += "<td><a href =filesystem?delete=" + String(file.name()) + "> Delete </a></td>";
temp += "</tr></th>";
file = root.openNextFile();
}
temp += "</tr></th>";
temp += "</td></tr></th><br></th></tr></table></table><br>";
temp += "<table border=2 bgcolor = white width = 400 ><td><h4>Upload</h4>";
temp += "<label> Choose File: </label>";
temp += "<form method='POST' action='/upload' enctype='multipart/form-data' style='height:35px;'><input type='file' name='upload' style='height:35px; font-size:13px;' required>\r\n<input type='submit' value='Upload' class='button'></form>";
temp += " </table><br>";
server.sendContent(temp);
temp = "";
temp += "<td><a href =filesystem?format=on> Format SPIFFS Filesystem. (Takes up to 30 Seconds) </a></td>";
temp += "<table border=2 bgcolor = white width = 500 cellpadding =5 ><caption><p><h3>Systemlinks:</h2></p></caption><tr><th><br>";
temp += " <a href='/'>Main Page</a><br><br></th></tr></table><br><br>";
server.sendContent(temp);
temp = "";
temp += "<footer><p>Programmed and designed by: Tobias Kuch</p><p>Contact information: <a href='mailto:[email protected]'>[email protected]</a>.</p></footer></body></html>";
//server.send ( 200, "", temp );
server.sendContent(temp);
server.client().stop(); // Stop is needed because we sent no content length
temp = "";
}
/** Load WLAN credentials from EEPROM */
bool loadCredentials()
{
bool RetValue;
EEPROM.begin(512);
EEPROM.get(0, MyWiFiConfig);
EEPROM.end();
if (String(MyWiFiConfig.ConfigValid) == String("TK"))
{
RetValue = true;
} else
{
RetValue = false; // WLAN Settings not found.
}
return RetValue;
}
/** Store WLAN credentials to EEPROM */
bool saveCredentials()
{
bool RetValue;
// Check logical Errors
RetValue = true;
if (MyWiFiConfig.APSTA == true ) //AP Mode
{
if (MyWiFiConfig.PwDReq and (sizeof(String(MyWiFiConfig.WiFiPwd)) < 8))
{
RetValue = false; // Invalid Config
}
if (sizeof(String(MyWiFiConfig.APSTAName)) < 1)
{
RetValue = false; // Invalid Config
}
} //else //Station Mode
// {
/// if (MyWiFiConfig.PwDReq and (sizeof(String(MyWiFiConfig.WiFiPwd)) < 8))
// {
// RetValue = false; // Invalid Config
// }
// if ((sizeof(String(MyWiFiConfig.APSTAName)) < 1) or MyWiFiConfig.CapPortal)
// {
// RetValue = false; // Invalid Config
// }
// }
// End Check logical Errors
if (RetValue)
{
EEPROM.begin(512);
for (int i = 0 ; i < sizeof(MyWiFiConfig) ; i++)
{
EEPROM.write(i, 0);
}
strncpy( MyWiFiConfig.ConfigValid , "TK", sizeof(MyWiFiConfig.ConfigValid) );
EEPROM.put(0, MyWiFiConfig);
EEPROM.commit();
EEPROM.end();
}
return RetValue;
}
void SetDefaultWiFiConfig()
{
byte len;
MyWiFiConfig.APSTA = true;
MyWiFiConfig.PwDReq = true; // default PW required
MyWiFiConfig.CapPortal = true;
strncpy( MyWiFiConfig.APSTAName, "ESP_Config", sizeof(MyWiFiConfig.APSTAName) );
len = strlen(MyWiFiConfig.APSTAName);
MyWiFiConfig.APSTAName[len+1] = '\0';
strncpy( MyWiFiConfig.WiFiPwd, "12345678", sizeof(MyWiFiConfig.WiFiPwd) );
len = strlen(MyWiFiConfig.WiFiPwd);
MyWiFiConfig.WiFiPwd[len+1] = '\0';
strncpy( MyWiFiConfig.ConfigValid, "TK", sizeof(MyWiFiConfig.ConfigValid) );
len = strlen(MyWiFiConfig.ConfigValid);
MyWiFiConfig.ConfigValid[len+1] = '\0';
Serial.println(F("Reset WiFi Credentials."));
}
void handleRoot() {
// Main Page:
temp = "";
short PicCount = 0;
byte ServArgs = 0;
//Building Page
// HTML Header
server.sendHeader("Cache-Control", "no-cache, no-store, must-revalidate");
server.sendHeader("Pragma", "no-cache");
server.sendHeader("Expires", "-1");
server.setContentLength(CONTENT_LENGTH_UNKNOWN);
// HTML Content
server.send ( 200, "text/html", temp ); // Speichersparen - Schon mal dem Client senden
temp = "";
temp += "<!DOCTYPE HTML><html lang='de'><head><meta charset='UTF-8'><meta name= viewport content='width=device-width, initial-scale=1.0,'>";
temp += "<style type='text/css'><!-- DIV.container { min-height: 10em; display: table-cell; vertical-align: middle }.button {height:35px; width:90px; font-size:16px}";
server.sendContent(temp);
temp = "";
temp += "body {background-color: powderblue;}</style>";
temp += "<head><title>Tobi's LED Display</title></head>";
temp += "<h2>LED Display</h2>";
temp += "<body>";
server.sendContent(temp);
temp = "";
// Processing User Request
if (server.args() > 0) // Parameter wurden ubergeben
{
temp += "<br>Eingaben werden verarbeitet. Bitte warten..<br><br>";;
server.sendContent(temp);
temp = "";
// Update Background Paper
if (server.arg("PicSelect") == "off") // Display wird gelöscht
{
temp = "";
drawBitmap_SPIFFS(temp,0,0);
temp = "";
} else
{
temp = server.arg("PicSelect"); // Bild gewählt. Display inhalt per Picselect hergstellt
drawBitmap_SPIFFS(temp,0,0);
temp = "";
}
}
temp += "<table border=2 bgcolor = white ><caption><p><h3>Verfügbare Bilder für das Led Display</h2></p></caption>";
temp += "<form>";
temp += "<tr><th><input type='radio' name='PicSelect' value = 'off' checked> KEIN Bild anzeigen <br></th></tr>";
temp += "<tr><th>";
//Listet die Aktuell im SPIFFS vorhandenen Dateien auf
File root = SPIFFS.open("/");
File file = root.openNextFile();
PicCount = 1;
while (file)
{
if (String(file.name()).endsWith(".bmp") or String(file.name()).endsWith(".BMP"))
{
BMPHeader PicData = ReadBitmapSpecs(file.name());
if ((PicData.width < ScreenResWidth + 1) and (PicData.height < ScreenResHeight +1 )) // nur anzeigen , wenn maximale Displayauslösung unterstützt ist . Größere Bilder nicht mehr anzeigen
{
temp += "<label for='radio1'><img src='"+ String(file.name())+"' alt='"+ String(file.name())+"' border='3' bordercolor=green> Bild "+ PicCount+"</label><input type='radio' value='"+ String(file.name())+"' name='PicSelect'/> <br>";
temp += String(file.name())+ " Res: "+ String(PicData.width) + "x" + String(PicData.height) + "px Filesize: "+ formatBytes(file.size()) + "</th></tr><tr><th>";
PicCount ++;
}
}
file = root.openNextFile();
}
server.sendContent(temp);
temp = "";
// temp += "</table><br>";
temp += "<button type='submit' name='action' value='0' style='height: 50px; width: 280px'>Auf Display anzeigen</button>";
temp += "</form>";
server.sendContent(temp);
temp += "<br><table border=2 bgcolor = white width = 280 cellpadding =5 ><caption><p><h3>Systemlinks:</h2></p></caption>";
temp += "<tr><th><br>";
temp += "<a href='/wifi'>WIFI Einstellungen</a><br><br>";
temp += "<a href='/filesystem'>Filemanager</a><br><br>";
temp += "</th></tr></table><br><br>";
temp += "<footer><p>Programmed and designed by: Tobias Kuch</p><p>Contact information: <a href='mailto:[email protected]'>[email protected]</a>.</p></footer>";
temp += "</body></html>";
server.sendContent(temp);
temp = "";
server.client().stop(); // Stop is needed because we sent no content length
}
void handleNotFound() {
if (captivePortal())
{ // If caprive portal redirect instead of displaying the error page.
return;
}
if (!handleFileRead(server.uri()))
{
temp = "";
// HTML Header
server.sendHeader("Cache-Control", "no-cache, no-store, must-revalidate");
server.sendHeader("Pragma", "no-cache");
server.sendHeader("Expires", "-1");
server.setContentLength(CONTENT_LENGTH_UNKNOWN);
// HTML Content
temp += "<!DOCTYPE HTML><html lang='de'><head><meta charset='UTF-8'><meta name= viewport content='width=device-width, initial-scale=1.0,'>";
temp += "<style type='text/css'><!-- DIV.container { min-height: 10em; display: table-cell; vertical-align: middle }.button {height:35px; width:90px; font-size:16px}";
temp += "body {background-color: powderblue;}</style>";
temp += "<head><title>File not found</title></head>";
temp += "<h2> 404 File Not Found</h2><br>";
temp += "<h4>Debug Information:</h4><br>";
temp += "<body>";
temp += "URI: ";
temp += server.uri();
temp += "\nMethod: ";
temp+= ( server.method() == HTTP_GET ) ? "GET" : "POST";
temp += "<br>Arguments: ";
temp += server.args();
temp += "\n";
for ( uint8_t i = 0; i < server.args(); i++ ) {
temp += " " + server.argName ( i ) + ": " + server.arg ( i ) + "\n";
}
temp += "<br>Server Hostheader: "+ server.hostHeader();
for ( uint8_t i = 0; i < server.headers(); i++ ) {
temp += " " + server.headerName ( i ) + ": " + server.header ( i ) + "\n<br>";
}
temp += "</table></form><br><br><table border=2 bgcolor = white width = 500 cellpadding =5 ><caption><p><h2>You may want to browse to:</h2></p></caption>";
temp += "<tr><th>";
temp += "<a href='/'>Main Page</a><br>";
temp += "<a href='/wifi'>WIFI Settings</a><br>";
temp += "<a href='/filesystem'>Filemanager</a><br>";
temp += "</th></tr></table><br><br>";
temp += "<footer><p>Programmed and designed by: Tobias Kuch</p><p>Contact information: <a href='mailto:[email protected]'>[email protected]</a>.</p></footer>";
temp += "</body></html>";
server.send ( 404, "", temp );
server.client().stop(); // Stop is needed because we sent no content length
temp = "";
}
}
/** Redirect to captive portal if we got a request for another domain. Return true in that case so the page handler do not try to handle the request again. */
boolean captivePortal() {
if (!isIp(server.hostHeader()) && server.hostHeader() != (String(ESPHostname)+".local")) {
// Serial.println("Request redirected to captive portal");
server.sendHeader("Location", String("http://") + toStringIp(server.client().localIP()), true);
server.send ( 302, "text/plain", ""); // Empty content inhibits Content-length header so we have to close the socket ourselves.
server.client().stop(); // Stop is needed because we sent no content length
return true;
}
return false;
}
/** Wifi config page handler */
void handleWifi()
{
// Page: /wifi
byte i;
byte len ;
temp = "";
// Check for Site Parameters
if (server.hasArg("Reboot") ) // Reboot System
{
temp = "Rebooting System in 5 Seconds..";
server.send ( 200, "text/html", temp );
delay(5000);
server.client().stop();
WiFi.disconnect();
delay(1000);
}
if (server.hasArg("WiFiMode") and (server.arg("WiFiMode") == "1") ) // STA Station Mode Connect to another WIFI Station
{
startMillis = millis(); // Reset Time Up Counter to avoid Idle Mode whiole operating
// Connect to existing STATION
if ( sizeof(server.arg("WiFi_Network")) > 0 )
{
Serial.println("STA Mode");
MyWiFiConfig.APSTA = false; // Access Point or Station Mode - false Station Mode
temp = "";
for ( i = 0; i < APSTANameLen;i++) { MyWiFiConfig.APSTAName[i] = 0; }
temp = server.arg("WiFi_Network");
len = temp.length();
for ( i = 0; i < len;i++)
{
MyWiFiConfig.APSTAName[i] = temp[i];
}
// MyWiFiConfig.APSTAName[len+1] = '\0';
temp = "";
for ( i = 0; i < WiFiPwdLen;i++) { MyWiFiConfig.WiFiPwd[i] = 0; }
temp = server.arg("STAWLanPW");
len = temp.length();
for ( i = 0; i < len;i++)
{
if (temp[i] > 32) //Steuerzeichen raus
{
MyWiFiConfig.WiFiPwd[i] = temp[i];
}
}
// MyWiFiConfig.WiFiPwd[len+1] = '\0';
temp = "WiFi Connect to AP: -";
temp += MyWiFiConfig.APSTAName;
temp += "-<br>WiFi PW: -";
temp += MyWiFiConfig.WiFiPwd;
temp += "-<br>";
temp += "Connecting to STA Mode in 2 Seconds..<br>";
server.send ( 200, "text/html", temp );
server.sendContent(temp);
delay(2000);
server.client().stop();
server.stop();
temp = "";
WiFi.disconnect();
WiFi.softAPdisconnect(true);
delay(500);
// ConnectWifiAP
bool SaveOk = saveCredentials();
i = ConnectWifiAP();
delay(700);
if (i != 3) // 4: WL_CONNECT_FAILED - Password is incorrect 1: WL_NO_SSID_AVAILin - Configured SSID cannot be reached
{
Serial.print(F("Cannot Connect to specified Network. Reason: "));
Serial.println(i);
server.client().stop();
delay(100);
WiFi.setAutoReconnect (false);
delay(100);
WiFi.disconnect();
delay(1000);
SetDefaultWiFiConfig();
CreateWifiSoftAP();
return;
} else
{
// Safe Config
bool SaveOk = saveCredentials();
InitalizeHTTPServer();
return;
}
}
}
if (server.hasArg("WiFiMode") and (server.arg("WiFiMode") == "2") ) // Change AP Mode
{
startMillis = millis(); // Reset Time Up Counter to avoid Idle Mode whiole operating
// Configure Access Point
temp = server.arg("APPointName");
len = temp.length();
temp =server.arg("APPW");
if (server.hasArg("PasswordReq"))
{
i = temp.length();
} else { i = 8; }
if ( ( len > 1 ) and (server.arg("APPW") == server.arg("APPWRepeat")) and ( i > 7) )
{
temp = "";
Serial.println(F("APMode"));
MyWiFiConfig.APSTA = true; // Access Point or Sation Mode - true AP Mode
if (server.hasArg("CaptivePortal"))
{
MyWiFiConfig.CapPortal = true ; //CaptivePortal on in AP Mode
} else { MyWiFiConfig.CapPortal = false ; }
if (server.hasArg("PasswordReq"))
{
MyWiFiConfig.PwDReq = true ; //Password Required in AP Mode
} else { MyWiFiConfig.PwDReq = false ; }
for ( i = 0; i < APSTANameLen;i++) { MyWiFiConfig.APSTAName[i] = 0; }
temp = server.arg("APPointName");
len = temp.length();
for ( i = 0; i < len;i++) { MyWiFiConfig.APSTAName[i] = temp[i]; }
MyWiFiConfig.APSTAName[len+1] = '\0';
temp = "";
for ( i = 0; i < WiFiPwdLen;i++) { MyWiFiConfig.WiFiPwd[i] = 0; }
temp = server.arg("APPW");
len = temp.length();
for ( i = 0; i < len;i++) { MyWiFiConfig.WiFiPwd[i] = temp[i]; }
MyWiFiConfig.WiFiPwd[len+1] = '\0';
temp = "";
if (saveCredentials()) // Save AP ConfigCongfig
{
temp = "Daten des AP Modes erfolgreich gespeichert. Reboot notwendig.";
} else { temp = "Daten des AP Modes fehlerhaft."; }
} else if (server.arg("APPW") != server.arg("APPWRepeat"))
{
temp = "";
temp = "WLAN Passwort nicht gleich. Abgebrochen.";
} else
{
temp = "";
temp = "WLAN Passwort oder AP Name zu kurz. Abgebrochen.";
}
// End WifiAP