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idriszmy/ESP32BlynkBLE.ino

Last active Mar 22, 2021
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Control and Monitor Sensor Data on ESP32 Using Blynk BLE
/*
Tutorial: Control and Monitor Sensor Data on ESP32 Using Blynk BLE
Board: ESP32 Dev Module (Hibiscus Sense ESP32)
https://my.cytron.io/p-hibiscus-sense-esp32-iot-development-board?tracking=idris
External libraries:
- Blynk by Volodymyr Shymanskyy V0.6.1
- Adafruit NeoPixel by Adafruit V1.7.0
- Adafruit BME280 by Adafruit V2.1.2
*/
#define BLYNK_PRINT Serial
#define BLYNK_USE_DIRECT_CONNECT
#include <Adafruit_NeoPixel.h>
#include <Adafruit_BME280.h>
#include <BlynkSimpleEsp32_BLE.h>
#include <BLEDevice.h>
#include <BLEServer.h>
Adafruit_NeoPixel rgb(1, 16);
Adafruit_BME280 bme;
char auth[] = "YourAuthToken";
long prevMillis = 0;
int red, green, blue;
boolean colorChange = false;
BLYNK_WRITE(V0)
{
red = param[0].asInt() / 10;
green = param[1].asInt() / 10;
blue = param[2].asInt() / 10;
colorChange = true;
}
void setup()
{
// Debug console
Serial.begin(115200);
rgb.begin();
if (!bme.begin()) {
Serial.println("Failed to find Hibiscus Sense BME280 chip");
}
Serial.println("Waiting for connections...");
Blynk.setDeviceName("Blynk");
Blynk.begin(auth);
rgb.show();
}
void loop()
{
Blynk.run();
if (colorChange == true) {
colorChange = false;
rgb.setPixelColor(0, red, green, blue);
rgb.show();
Serial.print("RGB color updated!");
}
if (millis() - prevMillis > 2000) {
float pressure = bme.readPressure() / 100;
float humidity = bme.readHumidity();
float temperature = bme.readTemperature();
Serial.print("Barometric Pressure: ");
Serial.print(pressure);
Serial.println(" hPa");
Blynk.virtualWrite(1, pressure);
Serial.print("Humidity: ");
Serial.print(humidity);
Serial.println(" %RH");
Blynk.virtualWrite(2, humidity);
Serial.print("Temperature: ");
Serial.print(temperature);
Serial.println(" *C");
Blynk.virtualWrite(3, temperature);
Serial.println();
prevMillis = millis();
}
}
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