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ESP32 BLE Fails to Advertise or Get Detected by Mobile App in Temperature Monitoring Project

Posted by Enthernet Code_0000
11:51 am
21/11/2024

Hello guys ahv gotten to a new stage on my project simple temperature monitoring system using `MicroPython` on a `Zephyr` `RTOS`-supported microcontroller, such as the `ESP32`, and transmit the data over `Bluetooth` Low Energy (BLE) to a mobile app. Am currently transmit the temperature and humidity data over Bluetooth Low Energy (BLE) from the `ESP32` to a mobile app but `BLE` fails to advertise or the mobile app does not detect the `ESP32`.

Here’s my code

import bluetooth
from machine import Pin
import dht

sensor = dht.DHT11(Pin(4))
ble = bluetooth.BLE()
ble.active(True)

def advertise():
    adv_data = b'x02x01x06' + b'x03x03xaaxfe'
    ble.gap_advertise(100, adv_data)

def send_data(temp, hum):
    data = "Temp: {}°C, Hum: {}%".format(temp, hum)
    ble.gatts_notify(0, 0, data.encode('utf-8'))

advertise()

while True:
    sensor.measure()
    temp = sensor.temperature()
    hum = sensor.humidity()
    send_data(temp, hum)