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Hello everyone again. I have a problem with Timer1 interrupts in my code. I want to generate pulses that drive my stepper motor. My motor is gonna work 8 sec (3200 pulses) and stop 4 sec continuously ...

No.

You have a hardware problem.
The software is also faulty, but the hardware has to be fixed first.

What smoothing do you have on the PIC itself?.
How is your supply generated?.
How are the ...

Getchar is receiving two characters.

You wait 100mSec after you have seen kbhit, before you call getchar.
In that time another character has sometimes arrived.
Remember (for instance), that the e ...

hello everyone. I have problem with getchar. After loading my codes when the program comes getchar line, getchar sending chars two times. Getchar doesn't do waiting for input char. at that moment, see ...

I don't know how to call Timer1 interrupt when the program is in rda interrupt.

Simple answer, You don't.

Spend as little time as possible in the interrupts (i.e. set flags etc then get out). ...

The location of your interrupt directives is wrong:

#int_rda
#int_timer1
#priority rda, timer1
void serihaberlesme_kesmesi ()
{
klavye=getchar();
.
.
.
}

void timer1_interrupts()
...

Hello everyone, this is my first topic here. Let me introduce what will i try to do. I want to control stepper motor by using serial comm. interface rs232. Firstly I set a Timer1 interrupt to produce ...