Re: [ts-7000] Re: Segmentation fault

[Ali Koksal <>]

Hi,
you can also use the write command

int fd = open("/dev/ttyAM0", O_RDWR | O_NOCTTY | O_NDELAY);
/* set baud rate etc. here */
write(fd, text, strlen(text));

Best regards
Ali

On Wed, Apr 29, 2009 at 2:37 PM, PeterElliot <> wrote:

Hi,

Before you can access memory directly you need to use mmap to gain access to that section of memory. I'm not sure if the outb function does this or assumes you've already done so.

Search the group message archive for mmap examples.

Regards,

PJE

--- In ts-7000%40yahoogroups.com, "ts7300" <> wrote:
>
> Hi,
> I am written a simple program to send data FF on com1 of ttyAM0
> -------------------------------------------------------
> #include<asm/io.h>
> int main()
> {
> while(1)
> {
> outb(0xFF,0X808C);
> }
> return 0;
> }
> ----------------------------------------------------
> while 0x808C is address of port ttyAM0 and FF is data.I am able to compile this code and afterward trying to run executable its shows segmentation fault on console.
>
> Can somebody try to help me out from this.
>

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