48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
#include <BLEDevice.h>
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#include <BLEUtils.h>
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#include <BLEServer.h>
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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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BLECharacteristic *pCharacteristic;
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void setup() {
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Serial.begin(115200);
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Serial.println("Starting BLE work!");
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BLEDevice::init("ESP32 Analog Advertiser");
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BLEServer *pServer = BLEDevice::createServer();
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BLEService *pService = pServer->createService(SERVICE_UUID);
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pCharacteristic = pService->createCharacteristic(
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CHARACTERISTIC_UUID,
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BLECharacteristic::PROPERTY_READ |
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BLECharacteristic::PROPERTY_NOTIFY
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);
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pService->start();
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BLEAdvertising *pAdvertising = BLEDevice::getAdvertising();
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pAdvertising->addServiceUUID(SERVICE_UUID);
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pAdvertising->setScanResponse(true);
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pAdvertising->setMinPreferred(0x06);
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pAdvertising->setMinPreferred(0x12);
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BLEDevice::startAdvertising();
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Serial.println("Characteristic defined! Now advertising analog values.");
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}
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void loop() {
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int analogValues[3];
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analogValues[0] = analogRead(A0);
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analogValues[1] = analogRead(A1);
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analogValues[2] = analogRead(A2);
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char valueStr[50];
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snprintf(valueStr, sizeof(valueStr), "A0:%d A1:%d A2:%d", analogValues[0], analogValues[1], analogValues[2]);
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Serial.println(valueStr);
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pCharacteristic->setValue(valueStr);
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pCharacteristic->notify();
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//delay(1000);
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}
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