byte array pointer question

[andy.dreistadt@gmail.com]

Hi all,

I know this is a pretty easy question for most, but I haven't touched
C++ in 5 years and am a bit rusty.

I have the following set-up:

my_function(BYT E *buf,WORD len)
{
//some stuff

int num_bytes = serialSendRcv(0 , buf, len, 5000);

//....more stuff
}


The problem is that the first byte of the buf array (buf[0]) is a
filter byte that I no longer need and do not want to pass to the
serialSendRcv() method. Instead, I would like to send it the array
containing buf[1]..buf[len]. I heard the best way to do this is to
dereference the array and increment the address, but I can't remember
how that's done.

Thanks in advance for any help you can give,

Andy

[Victor Bazarov]

Re: byte array pointer question

andy.dreistadt@ gmail.com wrote:[color=blue]
> I know this is a pretty easy question for most, but I haven't touched
> C++ in 5 years and am a bit rusty.
>
> I have the following set-up:
>
> my_function(BYT E *buf,WORD len)
> {
> //some stuff
>
> int num_bytes = serialSendRcv(0 , buf, len, 5000);[/color]

What you are asking below is

int num_bytes = serialSendRcv(0 , buf + 1, len - 1, 5000);

I have no idea what '0' and '5000' are supposed to mean and whether
they need to change as well.
[color=blue]
>
> //....more stuff
> }
>
>
> The problem is that the first byte of the buf array (buf[0]) is a
> filter byte that I no longer need and do not want to pass to the
> serialSendRcv() method. Instead, I would like to send it the array
> containing buf[1]..buf[len]. I heard the best way to do this is to
> dereference the array and increment the address, but I can't remember
> how that's done.[/color]

Victor

[andy.dreistadt@gmail.com]

Re: byte array pointer question

Victor,

It worked! Thanks again for your help.

Andy