CubieBoard Forum

Cubieboard itself => Beginners => Topic started by: tomg on March 07, 2014, 01:03:55 am

Title: uart troubles on CB2 Fixed
Post by: tomg on March 07, 2014, 01:03:55 am
Can anyone help me to get uart5 and uart6 running ?

I have set up script.bin for PI10, PI11, PI12 and PI13
and the system now shows them in dmesg as ttyS1 and ttyS2

I have linked U14 pin 45 and 47 (tx to rx)
and linked U14 pin 46 and 48 (tx to rx)

When I run minicom I do not get any response on either ttyS1 or ttyS2

Running linux #1 SMP PREEMPT Sat Oct 26 18:10:18 CST 2013

Well I have answered my own question. Even though the two uarts which I am using
are 2 wire, the minicom application defaults to hardware flow control and as soon as I switched
that off hey presto data is delivered.

It makes no sense that a 2 wire interface should have hardware flow control
but there it is.