131 lines
3.9 KiB
C++
131 lines
3.9 KiB
C++
/**
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*
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* @license MIT License
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*
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* Copyright (c) 2024 lewis he
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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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* @file AW9364LedDriver.hpp
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* @author Lewis He (lewishe@outlook.com)
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* @date 2024-11-22
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*
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*/
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#pragma once
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#include "SensorLib.h"
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#include "VirtualGpio.hpp"
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constexpr uint8_t MAX_BRIGHTNESS_STEPS = 16;
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class AW9364LedDriver
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{
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public:
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void begin(uint8_t pin)
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{
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_driver_pin = pin;
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_virtualGpio = NULL;
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this->_pinMode(_driver_pin, OUTPUT);
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this->_digitalWrite(_driver_pin, LOW);
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}
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void begin(VirtualGpio *handler, uint8_t pin)
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{
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_virtualGpio = handler;
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_driver_pin = pin;
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this->_pinMode(_driver_pin, OUTPUT);
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this->_digitalWrite(_driver_pin, LOW);
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}
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void setBrightness(uint8_t value)
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{
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if (_brightness == value) {
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return;
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}
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if (value > 16) {
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value = 16;
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}
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if (value == 0) {
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this->_digitalWrite(_driver_pin, 0);
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_brightness = 0;
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return;
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}
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if (_brightness == 0) {
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this->_digitalWrite(_driver_pin, 1);
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_brightness = MAX_BRIGHTNESS_STEPS;
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}
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int from = MAX_BRIGHTNESS_STEPS - _brightness;
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int to = MAX_BRIGHTNESS_STEPS - value;
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int num = (MAX_BRIGHTNESS_STEPS + to - from) % MAX_BRIGHTNESS_STEPS;
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uint32_t frequency = 0;
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if (_virtualGpio) {
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// If use I / O port Expander for driving, need to increase the I2C communication rate.
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// The test uses XINLUDA XL9555. The manual advertises the maximum communication rate as 400K.
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// In fact, it can be driven normally at 1000K.
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// https://item.szlcsc.com/datasheet/XL9555/639796.html
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frequency = _virtualGpio->getClock();
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_virtualGpio->setClock(1000000UL);
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}
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for (int i = 0; i < num; i++) {
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this->_digitalWrite(_driver_pin, 0);
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this->_digitalWrite(_driver_pin, 1);
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}
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if (_virtualGpio) {
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// Restore the original communication speed to avoid disrupting
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// the communication of other devices that do not support high-speed rates
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_virtualGpio->setClock(frequency);
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}
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_brightness = value;
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}
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uint8_t getBrightness() const
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{
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return _brightness;
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}
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protected:
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void _pinMode(uint8_t pin, uint8_t mode)
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{
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if (_virtualGpio) {
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_virtualGpio->pinMode(pin, mode);
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} else {
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pinMode(pin, mode);
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}
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}
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void _digitalWrite(uint8_t pin, uint8_t value)
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{
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if (_virtualGpio) {
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_virtualGpio->digitalWrite(pin, value);
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} else {
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digitalWrite(pin, value);
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}
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}
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private:
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VirtualGpio *_virtualGpio = NULL;
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uint8_t _driver_pin;
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uint8_t _brightness = 0;
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}; |