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Home > Archive > Unix Programming > July 2006 > help required.
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| chathsuom@gmail.com 2006-07-20, 7:24 pm |
| hi,
i am beginner for g++. i am using following code for reading from
serial port. but when i using it without a new line it doesnt read
anything. i need my prgram to read whenever other side is sending
without a new line.
fp = open("/dev/ttyS0", O_RDWR | O_NOCTTY |O_NDELAY);
fcntl(fp, F_SETFL,0);
read(fp,pPointer,2);
can any one help..
chaths
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| Pascal Bourguignon 2006-07-20, 7:24 pm |
| chathsuom@gmail.com writes:
> i am beginner for g++. i am using following code for reading from
> serial port. but when i using it without a new line it doesnt read
> anything. i need my prgram to read whenever other side is sending
> without a new line.
>
> fp = open("/dev/ttyS0", O_RDWR | O_NOCTTY |O_NDELAY);
> fcntl(fp, F_SETFL,0);
> read(fp,pPointer,2);
> can any one help..
By default, there's a cooked line discipline installed to the terminals.
You need to configure the device to behave as you want. To receive
each character as soon as it's available and with no processing,
you'll want to set it to the RAW mode, and to disable any special
character such as backspace, control-c, control-u, control-z, etc.
man termios
--
__Pascal Bourguignon__ http://www.informatimago.com/
NEW GRAND UNIFIED THEORY DISCLAIMER: The manufacturer may
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ten-dimensional. However, the consumer is reminded that this
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