Please help, any idea?

Are you sure your power supply is adequate?

Same as me, tried using others mqtt broker, no problem.

As mentioned using other mqtt broker, connect this board to laptop using usb cable, no problem.

Hi,

I tried to connect to IoT platform from ESP32 through MQTT.
My code as below. There is no problem when I use Adafruit MQTT broker.
But I got a "Guru Meditation Error: Core 1 panic'ed (InstrFetchProhibited)" error when tried to send MQTT to this IoT platform.

Is it due to the key is too long ...

result.c_str() is null terminated string
https://stackoverflow.com/questions/203 ... ted-string

what do you want to read and send is array of uint8 values

Can you advise where and how to fix my code?

Hi,

I'm developing a gateway for my sensor module (as ble server). I would like to
publish the sensor data to mqtt broker. So I'm using ESP32 that can use BT + WiFi.

Below is my programming. Based is from example of BLE_Client. And I modify
by myself (some took from this forum discussion).

My ...

Hi,

I'm very amateur in programming. I only have basic knowledge in C/C++.
So very sorry if my question or programming is very in low level.

I'm developing a gateway for my sensor module (as ble server). I would like to
publish the sensor data to mqtt broker. So I'm using ESP32 that can use BT ...