#ifndef __LED_MATRIX_H #define __LED_MATRIX_H typedef unsigned char uint8_t; void led_matrix_init(void); int led_matrix_set_brightness(int brightness); int led_matrix_draw_point(int x, int y, uint8_t color); void led_matrix_fill_rectangle(int x0, int y0, int x1, int y1, void *color); #endif