Yes, i should have thought of this. I removed the CH340 from the board (i use ICSP for programming) and now the uart0 line is "free".
Tested and is working with interrupt activated.
Thanks.

Using Flowcode 10, i made a flow which is using interrupt UART0 RX (Channel 1, 19200 baud rate) and a very small macro to save the received serial data in a circular buffer. Microcontroller used is Atmega 2560, board - Mega 2560 Pro.
I realized that the flow is not functional and start to search ...

Hi,

My setup is:
raspberry pi with mosquitto mqtt broker
mqtt client running on node red (installed on the same raspberry pi)
mqtt client on ESP32-wroom-32d
node red mqtt client is requesting data from ESP32 mqtt client

"Do you think that one of the MQTT functions is taking too long, if so, which ...

It is possible, that i do not fully understand how to use it.

Hi,

I have a question regarding MQTT_Client component. When i use it in a loop, program is not going further until a message is received or a "timeout" occur (i measured ~80seconds)
I want to "leave" the MQTT_Client function after ~50seconds, is there another way, beside using an interrupt ...

Hi,

Checked, functional.
Many thanks Ben.

Hello,

Thanks, i will check it in the following days.

Tiberiu

In the mean time i use "IoT Made Easy" library.
Now, from Node Red to ESP32, via MQTT i can send and receive data without any compile error.

Tiberiu

When i try to use MQTT Client, i have the bellow compiler error:

../main/esp-project.c: In function 'FCD_0a9d1_MQTT_Client1__Disconnect':
../main/esp-project.c:1110:9: error: 'FCR_RETVAL' may be used uninitialized in this function [-Werror=maybe-uninitialized]
:
^
cc1.exe: some warnings being ...

Hi,

I have to admit that this the first time when i use ESP32 modules.
My intention is to setup a communication between 2 modules, connected to my wi-fi router.
I do not know if this can be done with wlan esp32 library.
But, because i like to try new things i will order 2 modules and do some tests ...