CAvrStepper.h File Reference

Header file for CAvrStepper.cpp. More...

Go to the source code of this file.

Classes
class	CAvrStepper
	Holding data used by timer interrupt for speed ramp calculation. More...
Defines
#define	T1_FREQ   (2000000L)
#define	FSPR   200
	Number of (full)steps per round on stepper motor in use.
#define	SPR   (FSPR * 2)
#define	ALPHA   (1.0 / SPR)
#define	A_T_x100   ((long)(ALPHA * T1_FREQ * 100))
#define	T1_FREQ_148   ((int)((T1_FREQ *0.676) / 100))
#define	A_SQ   (long)(ALPHA * 2 * 100000000)
#define	A_x20000   ((int)(ALPHA * 20000))

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Detailed Description

Header file for CAvrStepper.cpp.

• File: CAvrStepper.h
• Compiler: GNU
• Supported devices: All devices with a 16 bit timer can be used. The example is written for ATmega48
• AppNote: AVR446 - Linear speed control of stepper motor

Author:

Atmel Corporation: http://www.atmel.com
Support email: avr@atmel.com

Kirk J. Davis BTO Corporation

Name:

RELEASE_1_0

Revision:

1.2

RCSfile:

speed_cntr.h,v

Date:

2006/05/08 12:25:58

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Define Documentation

#define T1_FREQ   (2000000L)

Frequency of timer1 in [Hz].

Modify this according to frequency used. Because of the prescaler setting, the timer1 frequency is the clock frequency divided by 8.