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/**
* Marlin 3D Printer Firmware
* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* Based on Sprinter and grbl.
* Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
* Copyright (c) 2017 Victor Perez
*
* 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 3 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, see <https://www.gnu.org/licenses/>.
*
*/
#pragma once
// Pin number of unattached pins
#define NOT_ATTACHED (-1)
#define INVALID_SERVO 255
#ifndef MAX_SERVOS
#define MAX_SERVOS 3
#endif
#define SERVO_DEFAULT_MIN_PW 544
#define SERVO_DEFAULT_MAX_PW 2400
#define SERVO_DEFAULT_MIN_ANGLE 0
#define SERVO_DEFAULT_MAX_ANGLE 180
#define HAL_SERVO_LIB libServo
class libServo {
public:
libServo();
bool attach(const int32_t pin, const int32_t minAngle=SERVO_DEFAULT_MIN_ANGLE, const int32_t maxAngle=SERVO_DEFAULT_MAX_ANGLE);
bool attached() const { return pin != NOT_ATTACHED; }
bool detach();
void move(const int32_t value);
int32_t read() const;
private:
void servoWrite(uint8_t pin, const uint16_t duty_cycle);
uint8_t servoIndex; // index into the channel data for this servo
int32_t pin = NOT_ATTACHED;
int32_t minAngle;
int32_t maxAngle;
int32_t angle;
bool setupSoftPWM(const int32_t pin);
void pauseSoftPWM();
void pwmSetDuty(const uint16_t duty_cycle);
};
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