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Add example for Wireless Bridge
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‎examples/2.4G_RF/BLE_WiFi/BLE_WiFi.ino‎

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/*
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* HelTec Automation(TM) Wireless Bridge dedicated test code, witch includ
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* follow functions:
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*
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* - Transfer WiFi and BLE message to each other;
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*
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* Because WiFi and BLE need working at the same time, this example can only
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* run with Heltec Wireless Bridge:
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* https://heltec.org/project/wireless-bridge/
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*
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* Detail description about this demo code, please refer to this document:
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*
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*
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* by Aaron.Lee from HelTec AutoMation, ChengDu, China
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* 成都惠利特自动化科技有限公司
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* www.heltec.cn
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*
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* this project also realess in GitHub:
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* https://github.com/HelTecAutomation/Heltec_ESP32
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*/
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#include <BLEDevice.h>
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#include <BLEServer.h>
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#include <BLEUtils.h>
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#include <BLE2902.h>
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#include <WiFi.h>
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#include <WiFiClient.h>
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#include <WebServer.h>
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#include <ESPmDNS.h>
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#include <Update.h>
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BLEServer *pServer = NULL;
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BLECharacteristic * pTxCharacteristic;
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bool deviceConnected = false;
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bool oldDeviceConnected = false;
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const char* ssid = "Your_WiFi_Name";
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const char* password = "Your_WiFi_Password";
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String First_data = "ABCD";
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// See the following for generating UUIDs:
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// https://www.uuidgenerator.net/
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#define SERVICE_UUID "6E400001-B5A3-F393-E0A9-E50E24DCCA9E" // UART service UUID
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#define CHARACTERISTIC_UUID_RX "6E400002-B5A3-F393-E0A9-E50E24DCCA9E"
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#define CHARACTERISTIC_UUID_TX "6E400003-B5A3-F393-E0A9-E50E24DCCA9E"
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class MyServerCallbacks: public BLEServerCallbacks {
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void onConnect(BLEServer* pServer) {
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deviceConnected = true;
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};
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void onDisconnect(BLEServer* pServer) {
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deviceConnected = false;
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}
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};
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String BLE_data;
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uint16_t num=0;
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bool BLEDownLink = false;
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uint32_t BLEdonwlinkTime;
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class MyCallbacks: public BLECharacteristicCallbacks {
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void onWrite(BLECharacteristic *pCharacteristic) {
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BLE_data = "";
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std::string rxValue = pCharacteristic->getValue();
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if (rxValue.length() > 0) {
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Serial.println("Received Value: ");
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for (int i = 0; i < rxValue.length(); i++)
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{
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Serial.print(rxValue[i]);
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BLE_data = BLE_data + (String)rxValue[i];
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}
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BLEDownLink = true;
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BLEdonwlinkTime = millis();
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num++;
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Serial.println();
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Serial.print(num);
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Serial.print(":");
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Serial.println(BLE_data);
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}
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}
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};
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WebServer server(80);
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String htmlS ="<html>\
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<head>\
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<title>Wireless_Bridge</title>\
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<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\
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</head>\
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<style type=\"text/css\">\
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.header{display: block;margin-top:10px;text-align:center;width:100%;font-size:10px}\
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.input{display: block;text-align:center;width:100%}\
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.input input{height: 20px;width: 300px;text-align:center;border-radius:15px;}\
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.input select{height: 26px;width: 305px;text-align:center;border-radius:15px;}\
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.btn,button{width: 305px;height: 40px;border-radius:20px; background-color: #000000; border:0px; color:#ffffff; margin-top:20px;}\
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</style>\
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<script type=\"text/javascript\">\
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function myrefresh()\
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{\
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window.location.reload();\
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}\
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window.onload=function(){\
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setTimeout('myrefresh()',10000);\
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} \
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</script>\
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<body>\
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<div style=\"width:100%;text-align:center;font-size:25px;font-weight:bold;margin-bottom:20px\">Wireless_Bridge</div>\
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<div style=\"width:100%;text-align:center;\">\
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<div class=\"header\"><span>(Note 1: The default refresh time of this page is 10s. If you need to modify the refresh time, you can modify it in the 'setTimeout' function.)</span></div>\
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<div class=\"header\"><span>(Note 2: The refresh time needs to be modified according to the data sending frequency.)</span></div>\
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<div class=\"header\"><span>Data: ";
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String htmlF = "</span></div>\
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</form>\
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</div>\
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</body>\
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</html>";
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String htmlW = "<html>\
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<head>\
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<title>Wireless_Bridge</title>\
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<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\
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</head>\
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<style type=\"text/css\">\
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.header{display: block;margin-top:10px;text-align:center;width:100%;font-size:10px}\
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.input{display: block;text-align:center;width:100%}\
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.input input{height: 20px;width: 300px;text-align:center;border-radius:15px;}\
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.input select{height: 26px;width: 305px;text-align:center;border-radius:15px;}\
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.btn,button{width: 305px;height: 40px;border-radius:20px; background-color: #000000; border:0px; color:#ffffff; margin-top:20px;}\
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</style>\
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<script type=\"text/javascript\">\
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window.onload=function(){\
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document.getElementsByName(\"server\")[0].value = \"\";\
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} \
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</script>\
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<body>\
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<div style=\"width:100%;text-align:center;font-size:25px;font-weight:bold;margin-bottom:20px\">Wireless_Bridge</div>\
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<div style=\"width:100%;text-align:center;\">\
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<div class=\"header\"><span>(Note : The data received by Bluetooth needs to be viewed with a Bluetooth debugging tool.)</span></div>\
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<form method=\"POST\" action=\"\" onsubmit=\"\">\
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<div class=\"header\"><span>DATA</span></div>\
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<div class=\"input\"><input type=\"text\" name=\"server\" value=\"\"></div>\
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<div class=\"header\"><input class=\"btn\" type=\"submit\" name=\"submit\" value=\"Submit\"></div>\
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</form>\
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</div>\
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</body>\
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</html>";
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String Page_data="";
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String symbol=":";
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void ROOT_HTML()
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{
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Page_data =Page_data+ (String)num+ symbol + BLE_data +"<br>";
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String html = htmlS + Page_data + htmlF;
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server.send(200,"text/html",html);
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}
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bool WiFiDownLink = false;
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uint32_t WiFidonwlinkTime;
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String Write_data;
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void ROOT_HTMLW()
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{
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if(server.hasArg("server"))
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{
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Serial.println(server.arg("server"));
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Write_data=server.arg("server");
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WiFiDownLink = true;
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WiFidonwlinkTime = millis();
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pTxCharacteristic->setValue((uint8_t *)Write_data.c_str(), strlen(Write_data.c_str()));
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pTxCharacteristic->notify();
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}
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server.send(200,"text/html",htmlW);
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}
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void setup() {
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Serial.begin(115200);
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pinMode(WIFI_LED, OUTPUT);
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pinMode(BLE_LED, OUTPUT);
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digitalWrite(WIFI_LED, HIGH);
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digitalWrite(BLE_LED, HIGH);
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delay(1000);
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digitalWrite(WIFI_LED, LOW);
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digitalWrite(BLE_LED, LOW);
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Serial.println();
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Serial.println("Booting Sketch...");
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WiFi.mode(WIFI_STA);
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WiFi.begin(ssid, password);
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if (WiFi.waitForConnectResult() == WL_CONNECTED) {
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server.on("/", ROOT_HTML);
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server.on("/w", ROOT_HTMLW);
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server.begin();
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MDNS.addService("http", "tcp", 80);
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Serial.println("");
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Serial.println("WiFi connected.");
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Serial.println("View page IP address: ");
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Serial.println(WiFi.localIP());
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Serial.println("Write page IP address: ");
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Serial.print(WiFi.localIP());
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Serial.println("/w");
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} else {
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Serial.println("WiFi Failed");
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}
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// Create the BLE Device
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BLEDevice::init("UART Service");
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// Create the BLE Server
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pServer = BLEDevice::createServer();
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pServer->setCallbacks(new MyServerCallbacks());
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// Create the BLE Service
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BLEService *pService = pServer->createService(SERVICE_UUID);
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// Create a BLE Characteristic
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pTxCharacteristic = pService->createCharacteristic(
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CHARACTERISTIC_UUID_TX,
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BLECharacteristic::PROPERTY_NOTIFY
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);
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pTxCharacteristic->addDescriptor(new BLE2902());
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BLECharacteristic * pRxCharacteristic = pService->createCharacteristic(
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CHARACTERISTIC_UUID_RX,
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BLECharacteristic::PROPERTY_WRITE
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);
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pRxCharacteristic->setCallbacks(new MyCallbacks());
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// Start the service
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pService->start();
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// Start advertising
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pServer->getAdvertising()->start();
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Serial.println("Waiting a client connection to notify...");
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}
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bool State = false;
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void loop() {
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server.handleClient();
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if (deviceConnected && State == false) {
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State = true;
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delay(1000);
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pTxCharacteristic->setValue((uint8_t *)First_data.c_str(), strlen(First_data.c_str()));
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pTxCharacteristic->notify();
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}
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// disconnecting
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if (!deviceConnected && oldDeviceConnected) {
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State = false;
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delay(500); // give the bluetooth stack the chance to get things ready
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pServer->startAdvertising(); // restart advertising
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Serial.println("start advertising");
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oldDeviceConnected = deviceConnected;
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}
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// connecting
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if (deviceConnected && !oldDeviceConnected) {
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// do stuff here on connecting
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oldDeviceConnected = deviceConnected;
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}
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if(BLEDownLink)
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{
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BLEDownLink = false;
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digitalWrite(BLE_LED,HIGH);
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}
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else if(digitalRead(BLE_LED) && (millis()-BLEdonwlinkTime)> 1000)
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{
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digitalWrite(BLE_LED,LOW);
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}
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if(WiFiDownLink)
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{
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WiFiDownLink = false;
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digitalWrite(WIFI_LED,HIGH);
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}
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else if(digitalRead(WIFI_LED) && (millis()-WiFidonwlinkTime)> 1000)
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{
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digitalWrite(WIFI_LED,LOW);
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}
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}

‎examples/TimeNTP_ESP32WiFi/TimeNTP_ESP32WiFi.ino‎ renamed to ‎examples/2.4G_RF/TimeNTP_ESP32WiFi/TimeNTP_ESP32WiFi.ino‎

File renamed without changes.

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