1.0.0

src/display.h

@@ -0,0 +1,51 @@
+#ifndef DISPLAY_H
+#define DISPLAY_H
+
+#include <stdint.h>
+
+// Initialize display (SSD1306 I2C or GC9A01 SPI depending on build config)
+void display_init(void);
+
+// Clear entire framebuffer
+void display_clear(void);
+
+// Write framebuffer to display
+void display_update(void);
+
+// Set text cursor position
+void display_set_cursor(uint8_t x, uint8_t y);
+
+// Get current cursor Y position
+uint8_t display_get_cursor_y(void);
+
+// Get display dimensions
+uint8_t display_width(void);
+uint8_t display_height(void);
+
+// Print string at current cursor (wraps, advances cursor)
+void display_print(const char* str);
+
+// Get pixel value at (x, y)
+uint8_t display_get_pixel(uint8_t x, uint8_t y);
+
+// Set pixel at (x, y) to color (0=black, 1=white)
+void display_draw_pixel(uint8_t x, uint8_t y, uint8_t color);
+
+// Fill rectangle with color
+void display_fill_rect(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint8_t color);
+
+// High-level functions
+
+// Scroll display up by N pixels
+void display_scroll_up(uint8_t pixels);
+
+// Check if scroll is needed and perform it
+void display_check_and_scroll(void);
+
+// Print message to display + serial
+void printout(const char* str);
+
+// Clear display and show version header
+void cls(void);
+
+#endif // DISPLAY_H