44 lines
1.3 KiB
Rust
44 lines
1.3 KiB
Rust
#![no_std]
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#![no_main]
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extern crate panic_abort;
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extern crate cortex_m_rt as rt;
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extern crate microbit;
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use core::fmt::Write;
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use rt::ExceptionFrame;
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use microbit::hal::prelude::*;
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use microbit::hal::delay::Delay;
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use microbit::hal::serial;
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use microbit::hal::serial::BAUD115200;
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#[entry]
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fn main() -> ! {
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if let Some(p) = microbit::Peripherals::take() {
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// Split GPIO
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let mut gpio = p.GPIO.split();
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// Configure RX and TX pins accordingly
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let tx = gpio.pin24.into_push_pull_output().downgrade();
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let rx = gpio.pin25.into_floating_input().downgrade();
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// Configure serial communication
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let (mut tx, _) = serial::Serial::uart0(p.UART0, tx, rx, BAUD115200).split();
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// Configure button GPIOs as inputs
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let button_a = gpio.pin17.into_floating_input();
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let button_b = gpio.pin26.into_floating_input();
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// delay
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let mut delay = Delay::new(p.TIMER0);
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loop {
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writeln!(
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tx, "Button A(down:{}, up:{}) B(down:{}, up:{})",
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button_a.is_low(),
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button_a.is_high(),
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button_b.is_low(),
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button_b.is_high(),
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).unwrap();
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delay.delay_ms(100_u8);
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}
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}
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panic!("End");
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}
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