Function piet_embedded_graphics::batch::draw_blocks

pub fn draw_blocks<SPI, DC, RST, T>(
    display: &mut ST7735<SPI, DC, RST>, 
    item_pixels: T
) -> Result<(), ()> where
    SPI: Write<u8>,
    DC: OutputPin,
    RST: OutputPin,
    T: IntoIterator<Item = Pixel<Rgb565>>, 

Draw the pixels in the item as Pixel Blocks of contiguous Pixel Rows. The pixels are grouped by row then by block.