/*! \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