Topics created by Rhys Jones

@Rhys-Jones Which device exactly are you plugging in? If you plug it in on a Linux PC, what does dmesg say? This should give you the info on which driver is needed.

Double-check that you have RX and TX connected correctly - they're easy to get swapped, as the usual convention is to connect TX of one device to RX of another. Also, you can check that you're getting bits by cating /dev/ttyS1, or using a terminal program like minicom or screen.