Add and remove libs and components for Arduino Core 3 (#400)
* Add and remove libs and components for Arduino Core 3 * Add back NimBLE-Arduino in resources
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set(COMPONENT_SRCS "main.cpp")
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set(COMPONENT_ADD_INCLUDEDIRS ".")
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register_component()
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#
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# "main" pseudo-component makefile.
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#
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# (Uses default behaviour of compiling all source files in directory, adding 'include' to include path.)
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164
lib/esp-nimble-cpp/examples/basic/BLE_notify/main/main.cpp
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164
lib/esp-nimble-cpp/examples/basic/BLE_notify/main/main.cpp
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/*
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Video: https://www.youtube.com/watch?v=oCMOYS71NIU
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Based on Neil Kolban example for IDF: https://github.com/nkolban/esp32-snippets/blob/master/cpp_utils/tests/BLE%20Tests/SampleNotify.cpp
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Ported to Arduino ESP32 by Evandro Copercini
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updated by chegewara
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Refactored back to IDF by H2zero
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Create a BLE server that, once we receive a connection, will send periodic notifications.
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The service advertises itself as: 4fafc201-1fb5-459e-8fcc-c5c9c331914b
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And has a characteristic of: beb5483e-36e1-4688-b7f5-ea07361b26a8
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The design of creating the BLE server is:
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1. Create a BLE Server
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2. Create a BLE Service
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3. Create a BLE Characteristic on the Service
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4. Create a BLE Descriptor on the characteristic
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5. Start the service.
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6. Start advertising.
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A connect hander associated with the server starts a background task that performs notification
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every couple of seconds.
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*/
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/** NimBLE differences highlighted in comment blocks **/
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/*******original********
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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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***********************/
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#include <NimBLEDevice.h>
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extern "C" {void app_main(void);}
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BLEServer* pServer = NULL;
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BLECharacteristic* pCharacteristic = NULL;
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bool deviceConnected = false;
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bool oldDeviceConnected = false;
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uint32_t value = 0;
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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 "4fafc201-1fb5-459e-8fcc-c5c9c331914b"
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#define CHARACTERISTIC_UUID "beb5483e-36e1-4688-b7f5-ea07361b26a8"
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/** None of these are required as they will be handled by the library with defaults. **
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** Remove as you see fit for your needs */
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class MyServerCallbacks: public BLEServerCallbacks {
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void onConnect(BLEServer* pServer, BLEConnInfo& connInfo) {
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deviceConnected = true;
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};
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void onDisconnect(BLEServer* pServer, BLEConnInfo& connInfo, int reason) {
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deviceConnected = false;
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}
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/***************** New - Security handled here ********************
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****** Note: these are the same return values as defaults ********/
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uint32_t onPassKeyDisplay(){
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printf("Server Passkey Display\n");
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/** This should return a random 6 digit number for security
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* or make your own static passkey as done here.
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*/
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return 123456;
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};
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void onConfirmPIN(const NimBLEConnInfo& connInfo, uint32_t pass_key){
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printf("The passkey YES/NO number: %" PRIu32 "\n", pass_key);
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/** Inject false if passkeys don't match. */
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NimBLEDevice::injectConfirmPIN(connInfo, true);
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};
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void onAuthenticationComplete(const NimBLEConnInfo& connInfo){
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/** Check that encryption was successful, if not we disconnect the client */
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if(!connInfo.isEncrypted()) {
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NimBLEDevice::getServer()->disconnect(connInfo.getConnHandle());
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printf("Encrypt connection failed - disconnecting client\n");
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return;
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}
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printf("Starting BLE work!");
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};
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/*******************************************************************/
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};
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void connectedTask (void * parameter){
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for(;;) {
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// notify changed value
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if (deviceConnected) {
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pCharacteristic->setValue((uint8_t*)&value, 4);
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pCharacteristic->notify();
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value++;
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vTaskDelay(100/portTICK_PERIOD_MS); // bluetooth stack will go into congestion, if too many packets are sent
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}
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// disconnecting
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if (!deviceConnected && oldDeviceConnected) {
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vTaskDelay(500/portTICK_PERIOD_MS); // give the bluetooth stack the chance to get things ready
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pServer->startAdvertising(); // restart advertising
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printf("start advertising\n");
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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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vTaskDelay(10/portTICK_PERIOD_MS); // Delay between loops to reset watchdog timer
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}
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vTaskDelete(NULL);
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}
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void app_main(void) {
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// Create the BLE Device
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BLEDevice::init("ESP32");
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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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pCharacteristic = pService->createCharacteristic(
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CHARACTERISTIC_UUID,
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/******* Enum Type NIMBLE_PROPERTY now *******
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BLECharacteristic::PROPERTY_READ |
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BLECharacteristic::PROPERTY_WRITE |
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BLECharacteristic::PROPERTY_NOTIFY |
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BLECharacteristic::PROPERTY_INDICATE
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);
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**********************************************/
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NIMBLE_PROPERTY::READ |
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NIMBLE_PROPERTY::WRITE |
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NIMBLE_PROPERTY::NOTIFY |
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NIMBLE_PROPERTY::INDICATE
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);
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// Create a BLE Descriptor
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/***************************************************
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NOTE: DO NOT create a 2902 descriptor.
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it will be created automatically if notifications
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or indications are enabled on a characteristic.
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pCharacteristic->addDescriptor(new BLE2902());
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****************************************************/
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// Start the service
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pService->start();
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// Start advertising
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BLEAdvertising *pAdvertising = BLEDevice::getAdvertising();
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pAdvertising->addServiceUUID(SERVICE_UUID);
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pAdvertising->setScanResponse(false);
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/** This method had been removed **
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pAdvertising->setMinPreferred(0x0); // set value to 0x00 to not advertise this parameter
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**/
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xTaskCreate(connectedTask, "connectedTask", 5000, NULL, 1, NULL);
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BLEDevice::startAdvertising();
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printf("Waiting a client connection to notify...\n");
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}
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