107 lines
3.3 KiB
C
107 lines
3.3 KiB
C
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/*#############################################################################
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## Author: Shaun Reed ##
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## Legal: All Content (c) 2025 Shaun Reed, all rights reserved ##
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## ##
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## Contact: shaunrd0@gmail.com | URL: www.shaunreed.com ##
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##############################################################################
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*/
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#ifndef SSD1306_H
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#define SSD1306_H
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#include <esp_lcd_panel_ssd1306.h>
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#include "panel_device.h"
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// According to specific display hardware.
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// https://www.digikey.com/en/products/detail/winstar-display/WEA012864DWPP3N00003/20533255
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#define SCREEN_WIDTH 128 // OLED display width, in pixels.
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#define SCREEN_HEIGHT 64 // OLED display height, in pixels.
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// According to SSD1306 datasheet.
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// https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf
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#define I2C_HW_ADDR 0x3C
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#define LCD_PIXEL_CLOCK_HZ (400 * 1000)
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// Bit number used to represent command and parameter
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#define LCD_CMD_BITS 8
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#define LCD_PARAM_BITS 8
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/**
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* Example of implementing the IPanelDevice interface for SSD1306 LCD device.
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*/
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class SSD1306 final : public IPanelDevice {
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public:
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/**
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* Construct a new SSD1306 device.
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*
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* @param i2c I2C master bus to manage this device.
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*/
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explicit SSD1306(I2C &i2c) :
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SSD1306(i2c, {.height = SCREEN_HEIGHT}) { }
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/**
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* Construct a new SSD1306 device given a specific SSD1306 configuration.
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*
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* @param i2c I2C master bus to manage this device.
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* @param config SSD1306 vendor configuration.
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* @param width Width of the device screen in pixels.
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* @param height Height of the device screen in pixels.
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*/
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SSD1306(I2C &i2c,
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esp_lcd_panel_ssd1306_config_t config,
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int width = SCREEN_WIDTH,
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int height = SCREEN_HEIGHT
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) :
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IPanelDevice(i2c,
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(esp_lcd_panel_io_i2c_config_t) {
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.dev_addr = I2C_HW_ADDR,
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// User data to pass to the LVGL flush_ready callback.
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// See IPanelDevice::lvgl_flush_ready_cb
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.user_ctx = nullptr,
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.control_phase_bytes = 1,
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.dc_bit_offset = 6,
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.lcd_cmd_bits = LCD_CMD_BITS,
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.lcd_param_bits = LCD_PARAM_BITS,
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.scl_speed_hz = LCD_PIXEL_CLOCK_HZ,
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},
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width,
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height
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),
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ssd1306_config_(config) { }
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~SSD1306() final = default;
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//
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// PUBLIC METHODS
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/**
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* Provides the SSD1306 vendor configuration to IPanelDevice consumers.
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*
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* @return Address of the SSD1306 vendor configuration structure.
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*/
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void *vendor_config() override
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{
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return &ssd1306_config_;
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}
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//
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// PUBLIC MEMBERS
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/// SSD1306 configuration structure.
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esp_lcd_panel_ssd1306_config_t ssd1306_config_;
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private:
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//
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// PRIVATE METHODS
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/// Initializes the ESP LCD panel handle for the SSD1306 device.
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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) override
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{
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ESP_ERROR_CHECK(esp_lcd_new_panel_ssd1306(io, &config, &panel));
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}
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};
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#endif // SSD1306_H
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