Hello,

Even though I had access to several UART implementations for the iCEstick already, including one I had implemented myself, it was indeed yours with your very intuitive naming of ports that helped my in identifying my own logic flaw. So, many thanks for you effort and for bringing it online.

To give something back and help others in a similar situtaion, I am offering an extension of your example. I named it uart_adder and hope that you consider to rename yours to uart_echo. Its grand achievement is to separate the input from the output and have a bit of computation in between - adding two bytes. The communication is not performed with a terminal program, a separate C program is provided.

I took some freedom to add a bit of verbosity to the README.md. This shall help google to find the project (it was only via a post in some forum that I found it) and give folks that stumble across it a bit more of a direction what this is all about.

Best,

Steffen