/* display a point on the lcd using the given colour. */
void lcd_draw_point_color(rt_uint16_t x, rt_uint16_t y, rt_uint16_t color)
/* display a point on the lcd using the given colour. */
void lcd_draw_point_color(rt_uint16_t x, rt_uint16_t y, rt_uint16_t color)
{
    lcd_address_set(x, y, x, y);
    lcd_write_half_word(color);
}