abstracting display, touch and sd

display/low_level_display_epaper.h

@@ -0,0 +1,48 @@
+#ifndef LOW_LEVEL_DISPLAY_EPAPER_H
+#define LOW_LEVEL_DISPLAY_EPAPER_H
+
+#include "low_level_display.h"
+
+// E-paper display configuration structure
+struct epaper_config {
+    void* spi;           // SPI instance
+    int gpio_din;        // MOSI pin
+    int gpio_clk;        // Clock pin
+    int gpio_cs;         // Chip select pin
+    int gpio_dc;         // Data/Command pin
+    int gpio_rst;        // Reset pin
+    int gpio_busy;       // Busy pin
+};
+
+class LowLevelDisplayEPaper : public LowLevelDisplay {
+private:
+    const epaper_config* config;
+    int width;
+    int height;
+    bool initialized;
+    uint8_t* framebuffer;  // E-paper needs a framebuffer
+    bool dirty;            // Track if display needs refresh
+    
+public:
+    LowLevelDisplayEPaper(const epaper_config* cfg, int w, int h);
+    ~LowLevelDisplayEPaper() override;
+    
+    // Core display operations - native 1-bit monochrome
+    bool init() override;
+    void clear(bool white = true) override;
+    void draw_pixel(int x, int y, bool white) override;
+    void draw_buffer(const uint8_t* bit_buffer) override;
+    void refresh() override;  // Actually update the e-paper display
+    
+    // Display properties
+    int get_width() const override { return width; }
+    int get_height() const override { return height; }
+    DisplayType get_type() const override { return DISPLAY_TYPE_EPAPER; }
+    bool is_color() const override { return false; }  // Most e-paper is monochrome
+    
+    // E-paper specific
+    void clear_display();
+    void sleep();  // Put display in low power mode
+};
+
+#endif // LOW_LEVEL_DISPLAY_EPAPER_H