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63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
/**
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* @file servo.h
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* @brief Header for SG90 servo driver (PWM)
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* @author Kevin Thomas
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* @date 2025
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*
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* MIT License
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*
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* Copyright (c) 2025 Kevin Thomas
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef SERVO_H
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#define SERVO_H
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#include <stdint.h>
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#include <stdbool.h>
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/**
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* @brief Initialize servo driver on a given GPIO pin
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*
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* Configures PWM for a 50 Hz servo (SG90). Call once before using other API.
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*
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* @param pin GPIO pin number to use for servo PWM
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*/
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void servo_init(uint8_t pin);
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/**
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* @brief Set servo pulse width in microseconds (typical 1000-2000)
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*
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* @param pulse_us Pulse width in microseconds
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*/
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void servo_set_pulse_us(uint16_t pulse_us);
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/**
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* @brief Set servo angle in degrees (0 to 180)
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*
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* Maps 0..180 degrees to the configured pulse range (default 1000..2000 us).
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* Values outside [0,180] will be clamped.
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*
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* @param degrees Angle in degrees
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*/
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void servo_set_angle(float degrees);
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#endif // SERVO_H
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