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30a542e763
* Add backlight handling for lcd_pcf8574 Switch the backlight on or off by calling id(mydisplay).backlight() or id(mydisplay).no_backlight() in lamda functions (assuming mydisplay is the custom id for the LCD). * Use abstract method Co-authored-by: Attila Darazs <attila@darazs.com> Co-authored-by: Otto Winter <otto@otto-winter.com>
50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
#pragma once
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#include "esphome/core/esphal.h"
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#include "esphome/components/lcd_base/lcd_display.h"
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namespace esphome {
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namespace lcd_gpio {
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class GPIOLCDDisplay : public lcd_base::LCDDisplay {
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public:
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void set_writer(std::function<void(GPIOLCDDisplay &)> &&writer) { this->writer_ = std::move(writer); }
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void setup() override;
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void set_data_pins(GPIOPin *d0, GPIOPin *d1, GPIOPin *d2, GPIOPin *d3) {
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this->data_pins_[0] = d0;
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this->data_pins_[1] = d1;
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this->data_pins_[2] = d2;
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this->data_pins_[3] = d3;
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}
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void set_data_pins(GPIOPin *d0, GPIOPin *d1, GPIOPin *d2, GPIOPin *d3, GPIOPin *d4, GPIOPin *d5, GPIOPin *d6,
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GPIOPin *d7) {
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this->data_pins_[0] = d0;
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this->data_pins_[1] = d1;
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this->data_pins_[2] = d2;
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this->data_pins_[3] = d3;
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this->data_pins_[4] = d4;
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this->data_pins_[5] = d5;
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this->data_pins_[6] = d6;
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this->data_pins_[7] = d7;
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}
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void set_enable_pin(GPIOPin *enable) { this->enable_pin_ = enable; }
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void set_rs_pin(GPIOPin *rs) { this->rs_pin_ = rs; }
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void set_rw_pin(GPIOPin *rw) { this->rw_pin_ = rw; }
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void dump_config() override;
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protected:
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bool is_four_bit_mode() override { return this->data_pins_[4] == nullptr; }
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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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GPIOPin *rs_pin_{nullptr};
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GPIOPin *rw_pin_{nullptr};
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GPIOPin *enable_pin_{nullptr};
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GPIOPin *data_pins_[8]{nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr};
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std::function<void(GPIOLCDDisplay &)> writer_;
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};
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} // namespace lcd_gpio
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} // namespace esphome
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