//! Demo for the 4-display device by AzDelivery. This is the device in the gif in the README.md.
//! (https://www.az-delivery.de/products/4-x-64er-led-matrix-display).

use max_7219_led_matrix_util::setup_adapter;
use max_7219_led_matrix_util::{prepare_display, show_moving_text_in_loop};

const NUM_DISPLAYS: usize = 4;

fn main() {
    println!("Demo for the 4-display device by AzDelivery. This is the device in the gif in the README.md.");
    println!();
    println!(
        "Provide 3 pins (gpio pin nums) please and connect all to the device: <data> <cs> <clk>"
    );
    println!("for example: '12 16 21'");
    println!();

    let args: Vec<String> = std::env::args().collect();
    assert_eq!(args.len(), 4, "Provide three args!");

    let data_pin = args[1].parse::<u32>().unwrap();
    let cs_pin = args[2].parse::<u32>().unwrap();
    let clk_pin = args[3].parse::<u32>().unwrap();

    println!("data={}, cs={}, clk={}", data_pin, cs_pin, clk_pin);

    // display adapter (std-feature, doesn't work in no_std)
    let mut display = setup_adapter("/dev/gpiochip0", NUM_DISPLAYS, data_pin, cs_pin, clk_pin);
    prepare_display(&mut display, NUM_DISPLAYS, 0x0F);
    show_moving_text_in_loop(
        &mut display,
        "HALLO LEON!!!  ",
        NUM_DISPLAYS,
        // ms for each animation step
        50,
        // gap_width
        None,
    );
}