Please Never use a popup any where in the app its extremely annoying, use a window I propse you call it "Console" or "LOG " .. oh what do you know you already have one!!!.. so please stop with the popups... also remove the Refresh button Let Connect ...

Same problem here.. can you please look at this issue STM as it cant be the boards .. hence every single thread on this problems goes cold a working Interupt enabled RX TX example with the latest STMCube/HAL would be nice For STM32F4xx