servoconf.h

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/*! \file servoconf.h \brief Interrupt-driven RC Servo configuration. */
//*****************************************************************************
//
// File Name    : 'servoconf.h'
// Title        : Interrupt-driven RC Servo function library
// Author       : Pascal Stang - Copyright (C) 2002
// Created      : 07/31/2002
// Revised      : 09/30/2002
// Version      : 1.0
// Target MCU   : Atmel AVR Series
// Editor Tabs  : 4
//
// NOTE: you need the latest version (3.2+) of the AVR-GCC compiler to use this
//  function library.  Download it from http://www.avrfreaks.net/AVRGCC
//
// Description : This code allows you to drive up to 8 RC servos from any
//      combination of ports and pins on the AVR processor. Using interrupts,
//      this code continuously sends control signals to the servo to maintain
//      position even while your code is doing other work.
//
//      The servoInit and servoOff effectively turn on and turn off servo
//      control.  When you run ServoInit, it automatically assigns each
//      "channel" of servo control to be output on the SERVO_DEFAULT_PORT.
//      One "channel" of servo control can control one servo and must be
//      assigned single I/O pin for output.
//
//      If you're using all eight channels (SERVO_NUM_CHANNELS = 8), then
//      then by default the code will use SERVO_DEFAULT_PORT pins 0-7.
//      If you're only using four channels, then pins 0-3 will be used by
//      default.
//
//      The command servoSetChannelIO(channel, port, pin) allows you to
//      reassign the output of any channel to any port and I/O pin you
//      choose.  For exampe, if you have an RC servo connected to PORTC, pin 6,
//      and you wish to use channel 2 to control it, use:
//
//      servoSerChannelIO( 2, _SFR_IO_ADDR(PORTC), 6)
//
//      (NOTE: you must include the "_SRF_IO_ADDR()" part around your port)
//
//      The servoSetPostion and servoGetPosition commands allow you to command
//      a given servo to your desired position.  The position you request must
//      lie between the SERVO_MIN and SERVO_MAX limit you defined.
//
// This code is distributed under the GNU Public License
//      which can be found at http://www.gnu.org/licenses/gpl.txt
//
//*****************************************************************************

#ifndef SERVOCONF_H
#define SERVOCONF_H

// set number of servo channels (1 to 8)
//      This is the number of servos you would like to drive
//      Each "Channel" can control one servo and by default will
//      map directly to the port pin of the same number on the
//      SERVO_DEFAULT_PORT.  You can change this default port/pin
//      assignment for a given channel to any port/pin you like.
//      See the "servoSetChannelIO" function.
#define SERVO_NUM_CHANNELS      4
// set default SERVO output port
//      This is the AVR port which you have connected to your servos 
//      See top of file for how servo "channels" map to port pins
#define SERVO_DEFAULT_PORT      PORTB
// set servo characteristics (min and max raw position)
//      You must find these by testing using your brand/type of servos.
//      The min/max settings will change proportional to F_CPU, the CPU
//      clock frequency.
// The numbers below good for parallax servos at an F_CPU of ~8MHz.
//#define SERVO_MAX             71
//#define SERVO_MIN             17
// The numbers below good for parallax servos at an F_CPU of ~14.745MHz.
#define SERVO_MAX               138
#define SERVO_MIN               34

// set servo scaled range
//      This sets the scaled position range of the servo.  Allowed scaled
//      positions are 0 -> SERVO_POSITION_MAX, and correspond to raw
//      positions of SERVO_MIN -> SERVO_MAX.
#define SERVO_POSITION_MAX      255

#endif

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