Beranda teks menggunakan esp8266 dan dot matrix displat 8x8 Nana Permana | Berbagi Baik Selasa, Agustus 22, 2023 0 #include <ESP8266WiFi.h> #include <MD_Parola.h> #include <MD_MAX72xx.h> #include <SPI.h> // Turn on debug statements to the serial output #define DEBUG 0 #if DEBUG #define PRINT(s, x) { Serial.print(F(s)); Serial.print(x); } #define PRINTS(x) Serial.print(F(x)) #define PRINTX(x) Serial.println(x, HEX) #else #define PRINT(s, x) #define PRINTS(x) #define PRINTX(x) #endif #define HARDWARE_TYPE MD_MAX72XX::FC16_HW #define MAX_DEVICES 8 #define CS_PIN 15 // or SS // HARDWARE SPI MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES); // WiFi login parameters - network name and password const char* ssid = "***********"; const char* password = "***********"; // WiFi Server object and parameters WiFiServer server(80); // Scrolling parameters uint8_t frameDelay = 25; // default frame delay value textEffect_t scrollEffect = PA_SCROLL_LEFT; // Global message buffers shared by Wifi and Scrolling functions #define BUF_SIZE 512 char curMessage[BUF_SIZE]; char newMessage[BUF_SIZE]; bool newMessageAvailable = false; const char WebResponse[] = "HTTP/1.1 200 OK\nContent-Type: text/html\n\n"; const char WebPage[] = "<!DOCTYPE html>" \ "<html>" \ "<head>" \ "<title>MajicDesigns Test Page</title>" \ "<script>" \ "strLine = \"\";" \ "function SendData()" \ "{" \ " nocache = \"/&nocache=\" + Math.random() * 1000000;" \ " var request = new XMLHttpRequest();" \ " strLine = \"&MSG=\" + document.getElementById(\"data_form\").Message.value;" \ " strLine = strLine + \"/&SD=\" + document.getElementById(\"data_form\").ScrollType.value;" \ " strLine = strLine + \"/&I=\" + document.getElementById(\"data_form\").Invert.value;" \ " strLine = strLine + \"/&SP=\" + document.getElementById(\"data_form\").Speed.value;" \ " request.open(\"GET\", strLine + nocache, false);" \ " request.send(null);" \ "}" \ "</script>" \ "</head>" \ "<body>" \ "<p><b>Smart Notice Board</b></p>" \ "<form id=\"data_form\" name=\"frmText\">" \ "<label>Message:<br><input type=\"text\" name=\"Message\" maxlength=\"255\"></label>" \ "<br><br>" \ "<input type = \"radio\" name = \"Invert\" value = \"0\" checked> Normal" \ "<input type = \"radio\" name = \"Invert\" value = \"1\"> Inverse" \ "<br>" \ "<input type = \"radio\" name = \"ScrollType\" value = \"L\" checked> Left Scroll" \ "<input type = \"radio\" name = \"ScrollType\" value = \"R\"> Right Scroll" \ "<br><br>" \ "<label>Speed:<br>Fast<input type=\"range\" name=\"Speed\"min=\"10\" max=\"200\">Slow"\ "<br>" \ "</form>" \ "<br>" \ "<input type=\"submit\" value=\"Send Data\" onclick=\"SendData()\">" \ "</body>" \ "</html>"; const char *err2Str(wl_status_t code) { switch (code) { case WL_IDLE_STATUS: return("IDLE"); break; // WiFi is in process of changing between statuses case WL_NO_SSID_AVAIL: return("NO_SSID_AVAIL"); break; // case configured SSID cannot be reached case WL_CONNECTED: return("CONNECTED"); break; // successful connection is established case WL_CONNECT_FAILED: return("CONNECT_FAILED"); break; // password is incorrect case WL_DISCONNECTED: return("CONNECT_FAILED"); break; // module is not configured in station mode default: return("??"); } } uint8_t htoi(char c) { c = toupper(c); if ((c >= '0') && (c <= '9')) return(c - '0'); if ((c >= 'A') && (c <= 'F')) return(c - 'A' + 0xa); return(0); } void getData(char *szMesg, uint16_t len) // Message may contain data for: // New text (/&MSG=) // Scroll direction (/&SD=) // Invert (/&I=) // Speed (/&SP=) { char *pStart, *pEnd; // pointer to start and end of text // check text message pStart = strstr(szMesg, "/&MSG="); if (pStart != NULL) { char *psz = newMessage; pStart += 6; // skip to start of data pEnd = strstr(pStart, "/&"); if (pEnd != NULL) { while (pStart != pEnd) { if ((*pStart == '%') && isxdigit(*(pStart + 1))) { // replace %xx hex code with the ASCII character char c = 0; pStart++; c += (htoi(*pStart++) << 4); c += htoi(*pStart++); *psz++ = c; } else *psz++ = *pStart++; } *psz = '\0'; // terminate the string newMessageAvailable = (strlen(newMessage) != 0); PRINT("\nNew Msg: ", newMessage); } } // check scroll direction pStart = strstr(szMesg, "/&SD="); if (pStart != NULL) { pStart += 5; // skip to start of data PRINT("\nScroll direction: ", *pStart); scrollEffect = (*pStart == 'R' ? PA_SCROLL_RIGHT : PA_SCROLL_LEFT); P.setTextEffect(scrollEffect, scrollEffect); P.displayReset(); } // check invert pStart = strstr(szMesg, "/&I="); if (pStart != NULL) { pStart += 4; // skip to start of data PRINT("\nInvert mode: ", *pStart); P.setInvert(*pStart == '1'); } // check speed pStart = strstr(szMesg, "/&SP="); if (pStart != NULL) { pStart += 5; // skip to start of data int16_t speed = atoi(pStart); PRINT("\nSpeed: ", P.getSpeed()); P.setSpeed(speed); frameDelay = speed; } } void handleWiFi(void) { static enum { S_IDLE, S_WAIT_CONN, S_READ, S_EXTRACT, S_RESPONSE, S_DISCONN } state = S_IDLE; static char szBuf[1024]; static uint16_t idxBuf = 0; static WiFiClient client; static uint32_t timeStart; switch (state) { case S_IDLE: // initialise PRINTS("\nS_IDLE"); idxBuf = 0; state = S_WAIT_CONN; break; case S_WAIT_CONN: // waiting for connection { client = server.available(); if (!client) break; if (!client.connected()) break; #if DEBUG char szTxt[20]; sprintf(szTxt, "%03d:%03d:%03d:%03d", client.remoteIP()[0], client.remoteIP()[1], client.remoteIP()[2], client.remoteIP()[3]); PRINT("\nNew client @ ", szTxt); #endif timeStart = millis(); state = S_READ; } break; case S_READ: // get the first line of data PRINTS("\nS_READ "); while (client.available()) { char c = client.read(); if ((c == '\r') || (c == '\n')) { szBuf[idxBuf] = '\0'; client.flush(); PRINT("\nRecv: ", szBuf); state = S_EXTRACT; } else szBuf[idxBuf++] = (char)c; } if (millis() - timeStart > 1000) { PRINTS("\nWait timeout"); state = S_DISCONN; } break; case S_EXTRACT: // extract data PRINTS("\nS_EXTRACT"); // Extract the string from the message if there is one getData(szBuf, BUF_SIZE); state = S_RESPONSE; break; case S_RESPONSE: // send the response to the client PRINTS("\nS_RESPONSE"); // Return the response to the client (web page) client.print(WebResponse); client.print(WebPage); state = S_DISCONN; break; case S_DISCONN: // disconnect client PRINTS("\nS_DISCONN"); client.flush(); client.stop(); state = S_IDLE; break; default: state = S_IDLE; } } void setup() { Serial.begin(57600); PRINTS("\n[MD_Parola WiFi Message Display]\nType a message for the scrolling display from your internet browser"); P.begin(); P.setIntensity(0); P.displayClear(); P.displaySuspend(false); P.displayScroll(curMessage, PA_LEFT, scrollEffect, frameDelay); curMessage[0] = newMessage[0] = '\0'; // Connect to and initialise WiFi network PRINT("\nConnecting to ", ssid); WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { PRINT("\n", err2Str(WiFi.status())); delay(500); } PRINTS("\nWiFi connected"); // Start the server server.begin(); PRINTS("\nServer started"); // Set up first message as the IP address sprintf(curMessage, "%03d:%03d:%03d:%03d", WiFi.localIP()[0], WiFi.localIP()[1], WiFi.localIP()[2], WiFi.localIP()[3]); PRINT("\nAssigned IP ", curMessage); } void loop() { handleWiFi(); if (P.displayAnimate()) { if (newMessageAvailable) { strcpy(curMessage, newMessage); newMessageAvailable = false; } P.displayReset(); } }
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