SECOND UART

[davidedp]

Hi everybody, I am new in this forum. As the title  suggests I'm trying to have the second UART working in the olinuxino RT5350F. Searching on google I understood that it is necessary to change the DTS file before recompiling in order to enable the UART full. After having read this article http://vonger.cn/?p=1409 for the VOCORE, I tried to make the same changes on the DTS of the olinuxinoEVB but I did not succeeded. It seems that the gpios necessary for the full uart are already in use. Did anybody already did it? Can you give me any advice?

[Giovanni_R]

Hi,
Have a look at the post entitled "Changing pinmux for rt5350f" on this forum.
(https://www.olimex.com/forum/index.php?topic=4586)

I think you will find there some useful information to enable the second UART and keep debug console on the first one.

Giovanni

[Riaan]

Hello,

I am having some difficulty getting the second UART to work. When I try to use ttyS1 I get the following errors: "write error: Input/output error" or "read error: Input/output error". What am I doing wrong, and what do I need to do to get it to work?

Thank you!