57 lines
1.5 KiB
Rust
Executable file
57 lines
1.5 KiB
Rust
Executable file
#![no_main]
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#![no_std]
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extern crate panic_halt;
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use core::fmt::Write;
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use cortex_m_rt::entry;
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use hal::{pac, prelude::*, rcc::Config};
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use hd44780_driver::HD44780;
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use heapless::Vec;
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#[entry]
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fn main() -> ! {
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let dp = pac::Peripherals::take().unwrap();
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let cp = cortex_m::Peripherals::take().unwrap();
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let mut rcc = dp.RCC.freeze(Config::hsi16());
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let gpioa = dp.GPIOA.split(&mut rcc);
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let _gpiob = dp.GPIOB.split(&mut rcc);
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let gpioc = dp.GPIOC.split(&mut rcc);
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let d0 = gpioc.pc0.into_push_pull_output();
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let d1 = gpioc.pc1.into_push_pull_output();
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let d2 = gpioc.pc2.into_push_pull_output();
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let d3 = gpioc.pc3.into_push_pull_output();
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let d4 = gpioc.pc4.into_push_pull_output();
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let d5 = gpioc.pc5.into_push_pull_output();
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let d6 = gpioc.pc6.into_push_pull_output();
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let d7 = gpioc.pc7.into_push_pull_output();
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let rs = gpioc.pc8.into_push_pull_output();
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let en = gpioc.pc9.into_push_pull_output();
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let mut delay = cp.SYST.delay(rcc.clocks);
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let mut led = gpioa.pa5.into_push_pull_output();
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let mut lcd = HD44780::new_8bit(rs, en, d0, d1, d2, d3, d4, d5, d6, d7, &mut delay).unwrap();
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let mut i = 0;
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let mut buf: Vec<u8, 40> = Vec::new();
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loop {
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lcd.write_str("Hello world!", &mut delay).unwrap();
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led.set_high().unwrap();
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delay.delay_ms(500_u16);
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led.set_low().unwrap();
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write!(buf, "hello: {i}").unwrap();
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lcd.write_bytes(&buf, &mut delay).unwrap();
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delay.delay_ms(500_u16);
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i += 1;
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}
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}
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