mirror of
https://github.com/randybb/esphome-configs.git
synced 2026-01-02 19:47:29 +01:00
62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
#pragma once
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#include "esphome/core/component.h"
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#include "esphome/core/esphal.h"
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#include "esphome/components/i2c/i2c.h"
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namespace esphome {
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namespace pca9554 {
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/// Modes for PCA9554 pins
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enum PCA9554GPIOMode : uint8_t {
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PCA9554_INPUT = INPUT,
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PCA9554_OUTPUT = OUTPUT,
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};
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class PCA9554Component : public Component, public i2c::I2CDevice {
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public:
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PCA9554Component() = default;
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/// Check i2c availability and setup masks
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void setup() override;
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/// Helper function to read the value of a pin.
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bool digital_read(uint8_t pin);
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/// Helper function to write the value of a pin.
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void digital_write(uint8_t pin, bool value);
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/// Helper function to set the pin mode of a pin.
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void pin_mode(uint8_t pin, uint8_t mode);
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float get_setup_priority() const override;
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void dump_config() override;
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protected:
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bool read_gpio_();
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bool write_gpio_();
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/// Mask for the pin mode - 1 means input, 0 means output
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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 read_gpio_ - 1 means HIGH, 0 means LOW
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uint16_t input_mask_{0x00};
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};
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/// Helper class to expose a PCA9554 pin as an internal input GPIO pin.
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class PCA9554GPIOPin : public GPIOPin {
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public:
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PCA9554GPIOPin(PCA9554Component *parent, uint8_t pin, uint8_t mode, bool inverted = false);
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void setup() override;
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void pin_mode(uint8_t mode) override;
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bool digital_read() override;
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void digital_write(bool value) override;
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protected:
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PCA9554Component *parent_;
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};
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} // namespace pca9554
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} // namespace esphome
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