Re: [ts-7000] Re: segmentation fault :(

["Hatem Mohamed" <>]

Hi Peter,

Firstly Thnx Alot for changing my status.
Thnx Also for ur advice really it makes a good result thnx Man

Hatem Mohamed

On 29 Mar 2007 04:48:04 -0700, PeterElliot <> wrote:

Hi Hatam,

You're messages were pending moderation - I've changed your status
now so future posts should come through without moderation...

A quick look at your code, the only thing I see is that you are not
mapping on a page boundary...

> start = mmap(0, getpagesize(), PROT_READ|PROT_WRITE, MAP_SHARED,
fd,
> 0x80840004);

Try:

start = mmap(0, getpagesize(), PROT_READ|PROT_WRITE, MAP_SHARED, fd,
0x80840000);

Then add 4 as an offset.

Regards,

PJE

--- In ts-7000%40yahoogroups.com, "Hatem Mohamed" <> wrote:
>
> Hi every body
> I have Ts-7300 , I wrote this C code on it and it is compiled
successfully
> but when I tried to execute the file I get this message "
segmentation
> fault "
> all I wanted from this code was to make pins from Dio0 ~ Dio7 all
zeros.
>
> #include<unistd.h>
> #include<sys/types.h>
> #include<sys/mman.h>
> #include<stdio.h>
> #include<fcntl.h>
> #include<string.h>
> int main()
> {
> volatile unsigned char *P1DR;
> unsigned char *start;
> int fd = open("/dev/mem", O_RDWR);
> start = mmap(0, getpagesize(), PROT_READ|PROT_WRITE, MAP_SHARED,
fd,
> 0x80840004);
> P1DR = (unsigned char *)(start + 0x00);
> *P1DR=0x00;
> close(fd);
> return 0;
> }
>
>
> that was my first question
>
> the second question
>
> can I make any pin in the 55 Dio zero or one alone I mean is there
any
> function can do that directly ??
>
> --
> Hatem Mohamed
>

-- 
Hatem Mohamed

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