pi-frame-server/src/main.rs

use clap::{Args, Parser, Subcommand};
use epd_waveshare::{epd7in3f::Epd7in3f, prelude::WaveshareDisplay};

pub mod imageproc;

/// The main
#[derive(Debug, Parser)]
#[command(version, about)]
struct Cli {
    #[command(subcommand)]
    command: Command,
}

#[derive(Debug, Subcommand)]
enum Command {
    /// Load a single image
    Load,
    /// Start the HTTP sever
    Serve,
}

use linux_embedded_hal::spidev::SpidevOptions;
use linux_embedded_hal::spidev::SpiModeFlags;
use linux_embedded_hal::{CdevPin, Delay, SpidevBus, SpidevDevice};

use linux_embedded_hal::gpio_cdev::{Chip, LineRequestFlags};

fn main() -> anyhow::Result<()> {
    let cli = Cli::parse();
    println!("CLI {cli:?}");
    if let Command::Load = cli.command {
        println!("loading");

        let mut spi = SpidevDevice::open("/dev/spidev0.0")?;
        let spi_options = SpidevOptions::new().bits_per_word(8).max_speed_hz(10_000_000).mode(SpiModeFlags::SPI_MODE_0).build();
        spi.configure(&spi_options)?;
        let mut gpiochip = Chip::new("/dev/gpiochip0")?;
        let busy_pin = CdevPin::new(gpiochip.get_line(24)?.request(
            LineRequestFlags::INPUT,
            0,
            "frametool",
        )?)?;
        let dc_pin = CdevPin::new(gpiochip.get_line(25)?.request(
            LineRequestFlags::OUTPUT,
            0,
            "frametool",
        )?)?;
        let rst_pin = CdevPin::new(gpiochip.get_line(17)?.request(
            LineRequestFlags::OUTPUT,
            0,
            "frametool",
        )?)?;
        let mut delay = Delay { };

        let mut panel = Epd7in3f::new(&mut spi, busy_pin, dc_pin, rst_pin, &mut delay, None)?;
        panel.show_7block(&mut spi, &mut delay)?;

    }

    Ok(())
}