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Marcus Priesch 2014-03-12 12:29:33 +01:00 • committed by Ralf Schlatterbeck
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examples/osd/dual-rgbw-actor/t4-servo-config.h Normal file
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// Copyright (C) 2014 Marcus Priesch, All rights reserved
// In Prandnern 31, A--2122 Riedenthal, Austria. office@priesch.co.at
// ****************************************************************************
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
// ****************************************************************************
//
//++
// Name
// t4-servo-config
//
// Purpose
// configuration for t4-servo
//
// Revision Dates
// 10-Mar-2014 (MPR) Creation
// ««revision-date»»···
//--
#include <avr/io.h>
#ifndef __T4_SERVO_CONFIG_H__
#define __T4_SERVO_CONFIG_H__ 1
// timing: (X:pwm, _:zero)
//
// X_______________XXXXXXXXXXXXX_______________XXXXXXXXXXXXX
//
// |<------------->|<--------->|<------------->|<--------->| ...
// SERVO_OFFSET SERVO_MAX SERVO_OFFSET SERVO_MAX
//
// within SERVO_MAX you get the PWM set with servo_set (id, pwm)
// if you set SERVO_OFFSET to zero, you get a pwm from 0 to 100% duty cycle
//
// the period of the smallest tick is derived from the timer4 prescaler
// plus the ISR overhead. however, the latter one should be constant
// regardless of the pwm signal generated
#define SERVO_OFFSET 0
#define SERVO_MIN 0
#define SERVO_MAX 64
// Counter value for timer 4 without any prescaler for a single tick
#define PWMFREQ 200
#define T4_VALUE F_CPU/SERVO_MAX/PWMFREQ
#define SERVO_COUNT 8
#define T4_SENSOR_NAME "Dual RGBW Led"
#endif