[SOLVED] How to implement read() for the following conditioin

linxquest · 12-13-2012, 01:03 AM

I am writing an athread for receiving data from a source which is transmitting 200 bytes of data at a baud rate of 1200 for every 200ms, I am receiving with baud rate of 115200, my thread can get control at any point of time, so how can i sense the 1st byte of the 200 byte transmission?

NevemTeve · 12-13-2012, 02:36 AM

In what context? PC or spec hw? If PC: Linux, DOS, Windows, etc? If linux: kernel-space or user-space?

linxquest · 12-13-2012, 02:55 AM

I am writing program in linux fedora version 11, thanks for the interest!

NevemTeve · 12-13-2012, 03:27 AM

Are you using a char special device like /dev/ttyS0? Or direct port-io?

linxquest · 12-13-2012, 04:59 AM

Hi nevemTeve....'m accesing data through serial port...

NevemTeve · 12-13-2012, 06:13 AM

Guessed so much. Could you answer my previous question: Are you using a char special device like /dev/ttyS0? Or direct port-io?

If you don't really know what this means, please read this first:
http://www.tldp.org/HOWTO/Serial-Programming-HOWTO/