output via serial com1

Simon Clubley simon.clubley at googlemail.com
Tue Jun 30 13:23:21 UTC 2009


On 30/06/2009, Simon Clubley <simon.clubley at googlemail.com> wrote:
> On 30/06/2009, lee <funnyvoice at tlabs.ac.za> wrote:
>  > Hi... Im trying to output my screen "output" to console via serial cable
>  >  on com1.
>  >
>  >  Here is my Code:
>  >
>  >  void testCom1(void) {
>  >   char buffer[256];
>  >
>  >   printf("*** Simple COM1 Test (9600 8N1) ***\n");
>  >
>  >   int fd = open("/dev/ttyS1", O_RDWR | O_NOCTTY | _FNDELAY);
>  >
>
> That's COM2, not COM1. Try /dev/ttyS0.
>

It looks like I was wrong about that. I don't use termios, but I
thought I had seen documentation and code which showed the first
serial port in a BSP was /dev/ttyS0 (as it is in Linux), but while
looking for something else, I found a PC386 based code reference which
says otherwise.

Sorry for the misinformation.

Simon.

-- 
Simon Clubley
simon.clubley at googlemail.com



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