78 lines
2.1 KiB
C++
78 lines
2.1 KiB
C++
#ifndef PANEL_DEVICE_H
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#define PANEL_DEVICE_H
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#include <esp_lcd_panel_dev.h>
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#include <esp_lcd_panel_ops.h>
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#include <esp_lcd_panel_ssd1306.h>
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#include <driver/i2c_types.h>
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#include <esp_lcd_panel_io.h>
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#include <esp_log.h>
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#include "display/lv_display.h"
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#include "i2c.h"
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#define LVGL_PALETTE_SIZE 8
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class IPanelDevice {
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public:
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explicit IPanelDevice(I2C &i2c,
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esp_lcd_panel_io_i2c_config_t config,
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int width,
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int height) :
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IPanelDevice(i2c, config, width, height,
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width * height / 8 + LVGL_PALETTE_SIZE) { }
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explicit IPanelDevice(I2C &i2c,
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esp_lcd_panel_io_i2c_config_t io_config,
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int width,
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int height,
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size_t draw_buf_size) :
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width_(width),
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height_(height),
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rst_num_(i2c.rst_num_),
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lv_buf_size_(draw_buf_size),
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i2c_bus_(i2c.i2c_bus_),
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io_config_(io_config) { }
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virtual ~IPanelDevice() = default;
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[[nodiscard]] lv_display_t *create_display() const
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{
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auto display = lv_display_create(width_, height_);
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assert(display);
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return display;
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}
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void create_panel(esp_lcd_panel_dev_config_t &config,
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esp_lcd_panel_io_handle_t io,
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esp_lcd_panel_handle_t &panel)
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{
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// If the passed handle is already allocated, delete it.
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if (panel != nullptr) {
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ESP_LOGI(TAG, "Removing unused panel");
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esp_lcd_panel_del(panel);
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}
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ESP_LOGI(TAG, "Install SSD1306 panel driver");
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init_panel(config, io, panel);
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}
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int32_t width_;
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int32_t height_;
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int rst_num_;
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// LVGL reserves 2x4 bytes in the buffer to be used as a palette.
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size_t lv_buf_size_;
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// TODO: Can we use a static accessor in I2C instead?
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i2c_master_bus_handle_t i2c_bus_;
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esp_lcd_panel_io_i2c_config_t io_config_;
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private:
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virtual void init_panel(esp_lcd_panel_dev_config_t &config,
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esp_lcd_panel_io_handle_t io,
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esp_lcd_panel_handle_t &panel) = 0;
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};
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#endif // PANEL_DEVICE_H
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