31 lines
893 B
C++
31 lines
893 B
C++
#pragma once
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#include "esphome/core/component.h"
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#include "esphome/components/lcd_base/lcd_display.h"
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#include "esphome/components/i2c/i2c.h"
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namespace esphome {
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namespace lcd_pcf8574 {
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class PCF8574LCDDisplay : public lcd_base::LCDDisplay, public i2c::I2CDevice {
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public:
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void set_writer(std::function<void(PCF8574LCDDisplay &)> &&writer) { this->writer_ = std::move(writer); }
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void setup() override;
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void dump_config() override;
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void backlight();
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void no_backlight();
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protected:
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bool is_four_bit_mode() override { return true; }
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void write_n_bits(uint8_t value, uint8_t n) override;
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void send(uint8_t value, bool rs) override;
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void call_writer() override { this->writer_(*this); }
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// Stores the current state of the backlight.
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uint8_t backlight_value_;
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std::function<void(PCF8574LCDDisplay &)> writer_;
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};
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} // namespace lcd_pcf8574
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} // namespace esphome
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