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Co-authored-by: Michal Obrembski <michal@obrembski.com> Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
#pragma once
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#include "esphome/components/gpio_expander/cached_gpio.h"
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#include "esphome/components/i2c/i2c.h"
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#include "esphome/core/component.h"
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#include "esphome/core/hal.h"
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namespace esphome {
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namespace tca9555 {
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class TCA9555Component : public Component,
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public i2c::I2CDevice,
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public gpio_expander::CachedGpioExpander<uint8_t, 16> {
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public:
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TCA9555Component() = default;
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/// Check i2c availability and setup masks
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void setup() override;
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void pin_mode(uint8_t pin, gpio::Flags flags);
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float get_setup_priority() const override;
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void dump_config() override;
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void loop() override;
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protected:
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bool digital_read_hw(uint8_t pin) override;
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bool digital_read_cache(uint8_t pin) override;
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void digital_write_hw(uint8_t pin, bool value) override;
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/// Mask for the pin mode - 1 means output, 0 means input
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uint16_t mode_mask_{0x00};
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/// The mask to write as output state - 1 means HIGH, 0 means LOW
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uint16_t output_mask_{0x00};
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/// The state read in digital_read_hw - 1 means HIGH, 0 means LOW
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uint16_t input_mask_{0x00};
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bool read_gpio_modes_();
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bool write_gpio_modes_();
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bool read_gpio_outputs_();
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};
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/// Helper class to expose a TCA9555 pin as an internal input GPIO pin.
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class TCA9555GPIOPin : public GPIOPin, public Parented<TCA9555Component> {
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public:
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void setup() override;
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void pin_mode(gpio::Flags flags) override;
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bool digital_read() override;
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void digital_write(bool value) override;
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std::string dump_summary() const override;
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void set_pin(uint8_t pin) { this->pin_ = pin; }
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void set_inverted(bool inverted) { this->inverted_ = inverted; }
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void set_flags(gpio::Flags flags) { this->flags_ = flags; }
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protected:
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uint8_t pin_;
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bool inverted_;
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gpio::Flags flags_;
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};
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} // namespace tca9555
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} // namespace esphome
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