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#pragma once
#include <stdint.h>
#include <stddef.h>
#include "driver/spi_master.h"
// Initialize ST7735 display over SPI
void st7735_init(void);
// Set drawing window (column/row address)
void st7735_set_window(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1);
// Write RGB565 pixel data to display (blocking, 2 bytes per pixel)
void st7735_write_pixels(const uint16_t *data, size_t len);
// Queue RGB565 pixel data for async DMA transfer
void st7735_write_pixels_async(const uint16_t *data, size_t len, spi_transaction_t *trans);
// Wait for the previous async transfer to complete
void st7735_wait_async(void);
