Re: How to do a blocking read from a serial device?

• Subject: Re: How to do a blocking read from a serial device?
• From: Michael Smith <email@hidden>
• Date: Wed, 12 Jul 2006 12:09:32 -0700
• Delivered-to: email@hidden
• Delivered-to: email@hidden

On Jul 11, 2006, at 12:11 PM, Michael Smith wrote:

On Jul 11, 2006, at 12:04 PM, email@hidden
wrote:

Read(2) will block if there is no data so there's no need to sleep.
Using select(2) is one way to go about it but with only one file
descriptor/socket, it seems pointless to me.

Select(2) makes timeout handling (mandatory for disconnectable
devices such as those attached by USB or serial interfaces) much
simpler.

Shouldn't that return -1 or 0?

 = Mike

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