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/** NimBLE_Server Demo:
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*
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* Demonstrates many of the available features of the NimBLE server library.
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*
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* Created: on March 22 2020
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* Author: H2zero
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*
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*/
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#include <NimBLEDevice.h>
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static NimBLEServer* pServer;
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NimBLECharacteristic* pBeefCharacteristic;
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int counter;
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/** Handler class for characteristic actions */
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class CharacteristicCallbacks: public NimBLECharacteristicCallbacks {
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void onRead(NimBLECharacteristic* pCharacteristic){
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counter++;
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pCharacteristic->setValue(counter);
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Serial.print(pCharacteristic->getUUID().toString().c_str());
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Serial.print(": onRead(), value: ");
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Serial.println(pCharacteristic->getValue().c_str());
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};
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};
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static CharacteristicCallbacks chrCallbacks;
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void setup() {
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Serial.begin(115200);
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Serial.println("Starting NimBLE Server");
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counter = 0;
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/** sets device name */
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NimBLEDevice::init("Acell_Miha_1");
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/** Optional: set the transmit power, default is 3db */
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//NimBLEDevice::setPower(ESP_PWR_LVL_P9); /** +9db */
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/** Set the IO capabilities of the device, each option will trigger a different pairing method.
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* BLE_HS_IO_DISPLAY_ONLY - Passkey pairing
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* BLE_HS_IO_DISPLAY_YESNO - Numeric comparison pairing
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* BLE_HS_IO_NO_INPUT_OUTPUT - DEFAULT setting - just works pairing
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*/
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//NimBLEDevice::setSecurityIOCap(BLE_HS_IO_DISPLAY_ONLY); // use passkey
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//NimBLEDevice::setSecurityIOCap(BLE_HS_IO_DISPLAY_YESNO); //use numeric comparison
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/** 2 different ways to set security - both calls achieve the same result.
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* no bonding, no man in the middle protection, secure connections.
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*
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* These are the default values, only shown here for demonstration.
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*/
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//NimBLEDevice::setSecurityAuth(false, false, true);
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NimBLEDevice::setSecurityAuth(/*BLE_SM_PAIR_AUTHREQ_BOND | BLE_SM_PAIR_AUTHREQ_MITM |*/ BLE_SM_PAIR_AUTHREQ_SC);
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pServer = NimBLEDevice::createServer();
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// pServer->setCallbacks(new ServerCallbacks());
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NimBLEService* pDeadService = pServer->createService("DEAD");
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pBeefCharacteristic = pDeadService->createCharacteristic(
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"BEEF",
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NIMBLE_PROPERTY::READ |
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//NIMBLE_PROPERTY::WRITE |
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/** Require a secure connection for read and write access */
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NIMBLE_PROPERTY::READ_ENC // only allow reading if paired / encrypted
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//NIMBLE_PROPERTY::WRITE_ENC // only allow writing if paired / encrypted
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);
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pBeefCharacteristic->setValue(counter);
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pBeefCharacteristic->setCallbacks(&chrCallbacks);
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/** 2904 descriptors are a special case, when createDescriptor is called with
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* 0x2904 a NimBLE2904 class is created with the correct properties and sizes.
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* However we must cast the returned reference to the correct type as the method
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* only returns a pointer to the base NimBLEDescriptor class.
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*/
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// NimBLE2904* pBeef2904 = (NimBLE2904*)pBeefCharacteristic->createDescriptor("2904");
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// pBeef2904->setFormat(NimBLE2904::FORMAT_UTF8);
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/** Note a 0x2902 descriptor MUST NOT be created as NimBLE will create one automatically
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* if notification or indication properties are assigned to a characteristic.
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*/
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/** Custom descriptor: Arguments are UUID, Properties, max length in bytes of the value */
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NimBLEDescriptor* pBeef2904 = pBeefCharacteristic->createDescriptor(
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"C01D",
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NIMBLE_PROPERTY::READ |
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NIMBLE_PROPERTY::WRITE|
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NIMBLE_PROPERTY::WRITE_ENC, // only allow writing if paired / encrypted
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20
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);
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/** Start the services when finished creating all Characteristics and Descriptors */
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pDeadService->start();
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NimBLEAdvertising* pAdvertising = NimBLEDevice::getAdvertising();
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/** Add the services to the advertisment data **/
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pAdvertising->addServiceUUID(pDeadService->getUUID());
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/** If your device is battery powered you may consider setting scan response
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* to false as it will extend battery life at the expense of less data sent.
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*/
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pAdvertising->setScanResponse(true);
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pAdvertising->start();
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Serial.println("Advertising Started");
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}
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void loop() {
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}
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