The trouble isn't that the Arduino doesn't support hardware flow control but that the USB-to-serial adapter built into the Arduino doesn't support hardware flow control.
I have another USB-to-serial controller I got to program my handheld ham radio that does support that, you can wire that to your Arduino and it just works...
But really it is a bad bit of cost cutting because the AVR8 is capable of very fast and reliable communications and you shouldn't need to have to add another dongle to get access to it.
I have another USB-to-serial controller I got to program my handheld ham radio that does support that, you can wire that to your Arduino and it just works...
But really it is a bad bit of cost cutting because the AVR8 is capable of very fast and reliable communications and you shouldn't need to have to add another dongle to get access to it.