Com port question
Hello.
Quoted 3 lines · Ged Haywood
I do not think FIFO buffering will help a program which manipulates the DTR line directly, as the UART is not actually sending data in the normal way - it's just being used as a 1-bit data latch.
Right, that's what I implied to actually. It works quite fast in a FIFO mode [only when the actual data transfer is concerned of course]. In all other cases it falls down with perforance [and the DTR case is the one of those].