unit_PCA9548AP.hpp

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/*
 * SPDX-FileCopyrightText: 2024 M5Stack Technology CO LTD
 *
 * SPDX-License-Identifier: MIT
 */
#ifndef M5_UNIT_PAHUB_UNIT_PCA9548AP_HPP
#define M5_UNIT_PAHUB_UNIT_PCA9548AP_HPP
 
#include <M5UnitComponent.hpp>
#include <array>
 
namespace m5 {
namespace unit {
 
class UnitPCA9548AP : public Component {
    M5_UNIT_COMPONENT_HPP_BUILDER(UnitPCA9548AP, 0x70);
 
public:
    constexpr static uint8_t MAX_CHANNEL{6};  
 
    explicit UnitPCA9548AP(const uint8_t addr = DEFAULT_ADDRESS);
    virtual ~UnitPCA9548AP() = default;
 
    uint8_t currentChannel() const
    {
        return _current;
    }
 
    bool readChannel(uint8_t& bits);
 
protected:
    virtual m5::hal::error::error_t select_channel(const uint8_t ch) override;
    virtual std::shared_ptr<Adapter> ensure_adapter(const uint8_t ch) override;
 
protected:
    uint8_t _current{0xFF};  // current channel 0 ~ MAX_CHANNEL
};
 
}  // namespace unit
}  // namespace m5
#endif