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problem with kbhit()

 
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cyberant



Joined: 04 Jun 2007
Posts: 27

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problem with kbhit()
PostPosted: Wed Jun 13, 2007 5:38 am     Reply with quote
I have the problem that if I jump into a function - for example functionA() I want to check for another character and this only gets recognized if Im done with this functionA(). Of Course I can use another kbhit() inside the functionA() but inside a are much more other functions which for example drive a stepper motor and if i use kbhit() everywhere inside its very confusing. Sad
Is there a better way to solf this?

Code:

while(true)
{

if (kbhit()) getc(var)
else
{
if (var=='A') {functionA()}
if (var=='B') {functionB()}
if (var=='C') {functionC()}
}

}
libor



Joined: 14 Dec 2004
Posts: 288
Location: Hungary

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PostPosted: Wed Jun 13, 2007 6:19 am     Reply with quote
This is what interrupts are for.
You fill a buffer with incoming data in an interrupt service routine, and check the buffer's contents in the main code.
There are plenty of examples (here and elsewhere) how to do it.
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