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author | Georgiy Bondarenko <69736697+nehilo@users.noreply.github.com> | 2021-03-04 20:54:23 +0300 |
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committer | Georgiy Bondarenko <69736697+nehilo@users.noreply.github.com> | 2021-03-04 20:54:23 +0300 |
commit | e8701195e66f2d27ffe17fb514eae8173795aaf7 (patch) | |
tree | 9f519c4abf6556b9ae7190a6210d87ead1dfadde /Marlin/src/HAL/ESP32/Servo.cpp | |
download | kp3s-lgvl-e8701195e66f2d27ffe17fb514eae8173795aaf7.tar.xz kp3s-lgvl-e8701195e66f2d27ffe17fb514eae8173795aaf7.zip |
Initial commit
Diffstat (limited to 'Marlin/src/HAL/ESP32/Servo.cpp')
-rw-r--r-- | Marlin/src/HAL/ESP32/Servo.cpp | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/Marlin/src/HAL/ESP32/Servo.cpp b/Marlin/src/HAL/ESP32/Servo.cpp new file mode 100644 index 0000000..fcf5848 --- /dev/null +++ b/Marlin/src/HAL/ESP32/Servo.cpp @@ -0,0 +1,69 @@ +/** + * 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 + * + * 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/>. + * + */ +#ifdef ARDUINO_ARCH_ESP32 + +#include "../../inc/MarlinConfig.h" + +#if HAS_SERVOS + +#include "Servo.h" + +// Adjacent channels (0/1, 2/3 etc.) share the same timer and therefore the same frequency and resolution settings on ESP32, +// so we only allocate servo channels up high to avoid side effects with regards to analogWrite (fans, leds, laser pwm etc.) +int Servo::channel_next_free = 12; + +Servo::Servo() { + channel = channel_next_free++; +} + +int8_t Servo::attach(const int inPin) { + if (channel >= CHANNEL_MAX_NUM) return -1; + if (inPin > 0) pin = inPin; + + ledcSetup(channel, 50, 16); // channel X, 50 Hz, 16-bit depth + ledcAttachPin(pin, channel); + return true; +} + +void Servo::detach() { ledcDetachPin(pin); } + +int Servo::read() { return degrees; } + +void Servo::write(int inDegrees) { + degrees = constrain(inDegrees, MIN_ANGLE, MAX_ANGLE); + int us = map(degrees, MIN_ANGLE, MAX_ANGLE, MIN_PULSE_WIDTH, MAX_PULSE_WIDTH); + int duty = map(us, 0, TAU_USEC, 0, MAX_COMPARE); + ledcWrite(channel, duty); +} + +void Servo::move(const int value) { + constexpr uint16_t servo_delay[] = SERVO_DELAY; + static_assert(COUNT(servo_delay) == NUM_SERVOS, "SERVO_DELAY must be an array NUM_SERVOS long."); + if (attach(0) >= 0) { + write(value); + safe_delay(servo_delay[channel]); + TERN_(DEACTIVATE_SERVOS_AFTER_MOVE, detach()); + } +} +#endif // HAS_SERVOS + +#endif // ARDUINO_ARCH_ESP32 |