thanks! I think I found what was the problem. I was using software uart, which caused the interrupt to not work

thanks, it worked

Why can't the flowcode 9 variables be visible in the proteus ???

unfortunately the interrupt does not work for me

what version are you talking about? did I miss something

yes I checked everything, this option works without interruption.
I do not understand what's the matter

baud rate on sim 800l 9600, as well as on the atmega328p controller, I do not understand what the problem is. I would be grateful if you showed how to properly organize the reception of data via UART

Thank you. I will now post an example, I am trying to receive data from sim800l, and unfortunately I can't get interrupted

Hi guys! why flowcode 9 does not work interrupt on UART avr microcontroller?

Example 2, I cannot send from the console to the UART port, You could help me if you know how to do it