Re: Serial port access from C / Objective C
Re: Serial port access from C / Objective C
- Subject: Re: Serial port access from C / Objective C
- From: "Vansickle, Greg" <email@hidden>
- Date: Tue, 16 Jun 2009 09:04:11 -0700
- Acceptlanguage: en-US
- Thread-topic: Serial port access from C / Objective C
Sorry,
Thanks for asking.
On the write, errno = 2 and strerrno(errno) returns "No such device or file".
On the read, errno = 35 and strerrno(errno) returns "Resource temporarily unavailable".
Clearly the write is the issue, but the errno isn't making sense to me.
On 6/16/09 12:19 AM, "Andrew Farmer" <email@hidden> wrote:
On 15 Jun 2009, at 15:10, Vansickle, Greg wrote:
> With the write / read in place, although the write appears to work
> (numbytes returns 5), the photometer does not respond (I get no
> "REMOTE" indication on the instrument panel. The subsequent read
> fails (returns -1).
This indicates that an error is occurring when you try to read from
the device. What shows up in errno when this occurs?
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden