RS232 Interrupt on CCS C

glenjoy · Joined: 18 Oct 2004 Posts: 21

I want to implement a serial routine in my program; it is getting a character from the serial port, now while waiting for the incoming serial data, I still want to monitor some important event outside my microcontroller, how to implement this w/o this:

main

{
char x;
while(1)
x = getc();
...........
..........

}

Because as far as I know the program will stop at at getc() and will wait for an input before it will got to the next line.

Kasper · Posted: Wed Mar 02, 2005 8:59 am

set up the serial receive interrupt

SherpaDoug · Joined: 07 Sep 2003 Posts: 1640 Location: Cape Cod Mass USA

The key is to call kbhit() to see if a character is available before calling getc()

{
char x;
while(1)
if (kbhit()) x = getc();
...........
..........

}
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glenjoy · Joined: 18 Oct 2004 Posts: 21

Is the kbhit useful for keyboards input only? whta if the input is not from a PC but from another serial peripherals?

Ttelmah · Guest

Bbhit, really has nothing to do with 'keyboards'!. The name dates from the early 'standard' use of 'C', which was assumed to have a serial terminal attached. Hence 'kbhit', just reflects whether there is an incoming character from the serial, which was assumed in this configuration to be a 'keyboard' character.

Best Wishes