Atmega 2560 - UART0 RX Interrupt not functional
Posted: Sat May 23, 2026 9:31 am
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 for the reason.
SendChar/SendString and ReceiveChar/ReceiveString are perfectly functional without using Interrupt.
When i use interrupt no serial data is received.
I suspect that something is wrong in the configuration, when ISR is activated, but i do not know what.
I realized that the flow is not functional and start to search for the reason.
SendChar/SendString and ReceiveChar/ReceiveString are perfectly functional without using Interrupt.
When i use interrupt no serial data is received.
I suspect that something is wrong in the configuration, when ISR is activated, but i do not know what.