On Fri, Sep 12, 2014 at 1:49 PM, Janusz Uzycki [off-list ref] wrote:

quoted

Dedicated CTS and RTS pins are unusable together with a lot of other
peripherals because they share the same line. Pinctrl is limited.

Moreover, the USART controller doesn't handle DTR/DSR/DCD/RI signals,

You meant "AUART controller"

Thanks Fabio. I wait for more comments, especially to comments-questions 
in the code.

best regards
Janusz