Using the com port on the iMX53

[leonardfairclot]

Has anyone created an application that opens the com port and listens to incoming messages and sends a response?

I'm writing in C and I believe that the "stdio.h" should have everything I need.  When I try to open the port I get error messages.  It doesn't seem to like the parameters:

int portnum

portnum = open("dev/ttys0", O_RDWR | O_NOCITY | O_NDELAY);

[leonardfairclot]

So I should be using "ttymxc1"?

[Yuri]

At first - for development / debugging - the "ttymxc0" may be used (in order to avoid problems how
to implement hardware connection with "ttymxc1" on the QSB) 

[leonardfairclot]

Yuri

I'll try again on Sunday night, Mondya morning your time.

Thanks

Leonard

[Yuri]

Please use O_NOCTTY instead of O_NOCITY 

[leonardfairclot]

Hi Yuri

I have it compiling with a comport trying to open. I asked Sun and I'll

ask you as well, what port should I be trying to open? I'm trying to

open "/dev/ttymxc0" is this

correct? I also tried "/dev/ttymxc1".

Thanks

Leonard

[weidong_sun]

Hello,Leonard,

     I have programed UART on i.mx51, I paster source code and Makefile here. you can refer to them.

Regards,

Weidong