embassy/tests/stm32/src/bin/gpio.rs

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2021-11-24 03:18:30 +01:00
#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
#[path = "../example_common.rs"]
mod example_common;
use defmt::assert;
use embassy::executor::Spawner;
use embassy_stm32::gpio::{Input, Level, Output, Pull, Speed};
use embassy_stm32::Peripherals;
use embedded_hal::digital::v2::{InputPin, OutputPin};
use example_common::*;
#[embassy::main]
async fn main(_spawner: Spawner, p: Peripherals) {
info!("Hello World!");
let (mut a, mut b) = (p.PG14, p.PG9);
// Test initial output
{
let b = Input::new(&mut b, Pull::None);
{
let _a = Output::new(&mut a, Level::Low, Speed::Low);
cortex_m::asm::delay(1000);
assert!(b.is_low().unwrap());
}
{
let _a = Output::new(&mut a, Level::High, Speed::Low);
cortex_m::asm::delay(1000);
assert!(b.is_high().unwrap());
}
}
// Test input no pull
{
let b = Input::new(&mut b, Pull::None);
// no pull, the status is undefined
let mut a = Output::new(&mut a, Level::Low, Speed::Low);
cortex_m::asm::delay(1000);
assert!(b.is_low().unwrap());
a.set_high().unwrap();
cortex_m::asm::delay(1000);
assert!(b.is_high().unwrap());
}
// Test input pulldown
{
let b = Input::new(&mut b, Pull::Down);
cortex_m::asm::delay(1000);
assert!(b.is_low().unwrap());
let mut a = Output::new(&mut a, Level::Low, Speed::Low);
cortex_m::asm::delay(1000);
assert!(b.is_low().unwrap());
a.set_high().unwrap();
cortex_m::asm::delay(1000);
assert!(b.is_high().unwrap());
}
// Test input pullup
{
let b = Input::new(&mut b, Pull::Up);
cortex_m::asm::delay(1000);
assert!(b.is_high().unwrap());
let mut a = Output::new(&mut a, Level::Low, Speed::Low);
cortex_m::asm::delay(1000);
assert!(b.is_low().unwrap());
a.set_high().unwrap();
cortex_m::asm::delay(1000);
assert!(b.is_high().unwrap());
}
info!("Test OK");
cortex_m::asm::bkpt();
}