hello.rs

#![no_std]
#![no_main]

use panic_halt as _;
use cortex_m_rt::entry;
use stm32f1xx_hal::{pac, prelude::*};
use liquid_crystal::{prelude::*};
use liquid_crystal::Parallel;

#[entry]
fn main() -> ! {

    //Rust logo
    let rust1: [u8; 8] = [0b00001,0b00011,0b00011,0b01110,0b11100,0b11000,0b01000,0b01000];
    let rust2: [u8; 8] = [0b10001,0b11111,0b00000,0b00000,0b11110,0b10001,0b10001,0b11110];
    let rust3: [u8; 8] = [0b10000,0b11000,0b11000,0b01110,0b00111,0b00011,0b00010,0b000010];

    let rust4: [u8; 8] = [0b01000,0b01000,0b11000,0b11100,0b01110,0b00011,0b00011,0b00001];
    let rust5: [u8; 8] = [0b11000,0b10100,0b10010,0b00000,0b00000,0b00000,0b11111,0b10001];
    let rust6: [u8; 8] = [0b00010,0b00010,0b00011,0b00111,0b01110,0b11000,0b11000,0b10000];

    let cp = cortex_m::Peripherals::take().unwrap();
    let dp = pac::Peripherals::take().unwrap();

    let mut flash = dp.FLASH.constrain();
    let rcc = dp.RCC.constrain();
    let clocks = rcc.cfgr.freeze(&mut flash.acr);


    let mut gpioc = dp.GPIOC.split();
    let mut gpioa = dp.GPIOA.split();


    let en = gpioc.pc13.into_push_pull_output(&mut gpioc.crh);
    let rs = gpioc.pc14.into_push_pull_output(&mut gpioc.crh);
    let d4 = gpioc.pc15.into_push_pull_output(&mut gpioc.crh);
    let d5 = gpioa.pa0.into_push_pull_output(&mut gpioa.crl);
    let d6 = gpioa.pa1.into_push_pull_output(&mut gpioa.crl);
    let d7 = gpioa.pa2.into_push_pull_output(&mut gpioa.crl);

    let mut delay = cp.SYST.delay(&clocks);

    let mut lcd_interface = Parallel::new(d4, d5, d6, d7, rs, en, lcd_dummy);
    let mut lcd = LiquidCrystal::new(&mut lcd_interface, Bus4Bits, LCD16X2);

    lcd.begin(&mut delay);
    lcd.custom_char(&mut delay, &rust1, 0);
    lcd.custom_char(&mut delay, &rust2, 1);
    lcd.custom_char(&mut delay, &rust3, 2);
    lcd.custom_char(&mut delay, &rust4, 3);
    lcd.custom_char(&mut delay, &rust5, 4);
    lcd.custom_char(&mut delay, &rust6, 5);

    lcd.write(&mut delay,Text("hello World!"))
        .write(&mut delay,Command(MoveLine2))
        .write(&mut delay,Text("made in Rust!"));
    lcd.set_cursor(&mut delay, 0, 13)
        .write(&mut delay, CustomChar(0))
        .write(&mut delay, CustomChar(1))
        .write(&mut delay, CustomChar(2));

    lcd.set_cursor(&mut delay, 1, 13)
        .write(&mut delay, CustomChar(3))
        .write(&mut delay, CustomChar(4))
        .write(&mut delay, CustomChar(5));
    loop {}
}