//! Blinks an LED
//!
//! This assumes that a LED is connected to GPIO4.
//! Depending on your target and the board you are using you should change the pin.
//! If your board doesn't have on-board LEDs don't forget to add an appropriate resistor.
//!

use esp_idf_hal::delay::FreeRtos;
use esp_idf_hal::gpio::*;
use esp_idf_hal::peripherals::Peripherals;
use core::fmt::Write;

use ssd1306::{mode::TerminalMode, prelude::*, I2CDisplayInterface, Ssd1306};
use stm32f1xx_hal::{
    i2c::{ DutyCycle, Mode},
    prelude::*,
    stm32,
};

fn main() -> anyhow::Result<()> {
    esp_idf_sys::link_patches();

    let peripherals = Peripherals::take().unwrap();
    let mut led = PinDriver::output(peripherals.pins.gpio4)?;
    let interface = I2CDisplayInterface::new(i2c);
    println!("Hello World");


    let mut display = Ssd1306::new(
        interface,
        DisplaySize128x64,
        DisplayRotation::Rotate0,
    ).into_terminal_mode();
    display.init().unwrap();
    display.clear().unwrap();

    for c in 97..123 {
    let _ = display.write_str(unsafe { core::str::from_utf8_unchecked(&[c]) });
    }
    for c in 65..91 {
        let _ = display.write_str(unsafe { core::str::from_utf8_unchecked(&[c]) });
    }

    // The `write!()` macro is also supported
    write!(display, "Hello, {}", "world");

    loop {
        led.set_high()?;
        // we are sleeping here to make sure the watchdog isn't triggered
        FreeRtos::delay_ms(1000);

        led.set_low()?;
        FreeRtos::delay_ms(1000);
    }
}