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|
#![no_std]
#![no_main]
#[cfg(feature = "rp2040")]
teleprobe_meta::target!(b"rpi-pico");
#[cfg(feature = "rp235xb")]
teleprobe_meta::target!(b"pimoroni-pico-plus-2");
use defmt::{assert, *};
use embassy_executor::Spawner;
#[cfg(feature = "rp2040")]
use embassy_rp::gpio::OutputOpenDrain;
use embassy_rp::gpio::{Flex, Input, Level, Output, Pull};
use {defmt_rtt as _, panic_probe as _};
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let p = embassy_rp::init(Default::default());
info!("Hello World!");
let (mut a, mut b) = (p.PIN_0, p.PIN_1);
// Test initial output
{
let b = Input::new(b.reborrow(), Pull::None);
{
let a = Output::new(a.reborrow(), Level::Low);
delay();
assert!(b.is_low());
assert!(!b.is_high());
assert!(a.is_set_low());
assert!(!a.is_set_high());
}
{
let mut a = Output::new(a.reborrow(), Level::High);
delay();
assert!(!b.is_low());
assert!(b.is_high());
assert!(!a.is_set_low());
assert!(a.is_set_high());
// Test is_set_low / is_set_high
a.set_low();
delay();
assert!(b.is_low());
assert!(a.is_set_low());
assert!(!a.is_set_high());
a.set_high();
delay();
assert!(b.is_high());
assert!(!a.is_set_low());
assert!(a.is_set_high());
// Test toggle
a.toggle();
delay();
assert!(b.is_low());
assert!(a.is_set_low());
assert!(!a.is_set_high());
a.toggle();
delay();
assert!(b.is_high());
assert!(!a.is_set_low());
assert!(a.is_set_high());
}
}
// Test input no pull
{
let b = Input::new(b.reborrow(), Pull::None);
// no pull, the status is undefined
let mut a = Output::new(a.reborrow(), Level::Low);
delay();
assert!(b.is_low());
a.set_high();
delay();
assert!(b.is_high());
}
// Test input pulldown
#[cfg(feature = "rp2040")]
{
let b = Input::new(b.reborrow(), Pull::Down);
delay();
assert!(b.is_low());
let mut a = Output::new(a.reborrow(), Level::Low);
delay();
assert!(b.is_low());
a.set_high();
delay();
assert!(b.is_high());
}
// Test input pullup
{
let b = Input::new(b.reborrow(), Pull::Up);
delay();
assert!(b.is_high());
let mut a = Output::new(a.reborrow(), Level::Low);
delay();
assert!(b.is_low());
a.set_high();
delay();
assert!(b.is_high());
}
// OUTPUT OPEN DRAIN
#[cfg(feature = "rp2040")]
{
let mut b = OutputOpenDrain::new(b.reborrow(), Level::High);
let mut a = Flex::new(a.reborrow());
a.set_as_input();
// When an OutputOpenDrain is high, it doesn't drive the pin.
b.set_high();
a.set_pull(Pull::Up);
delay();
assert!(a.is_high());
a.set_pull(Pull::Down);
delay();
assert!(a.is_low());
// When an OutputOpenDrain is low, it drives the pin low.
b.set_low();
a.set_pull(Pull::Up);
delay();
assert!(a.is_low());
a.set_pull(Pull::Down);
delay();
assert!(a.is_low());
// Check high again
b.set_high();
a.set_pull(Pull::Up);
delay();
assert!(a.is_high());
a.set_pull(Pull::Down);
delay();
assert!(a.is_low());
// When an OutputOpenDrain is high, it reads the input value in the pin.
b.set_high();
a.set_as_input();
a.set_pull(Pull::Up);
delay();
assert!(b.is_high());
a.set_as_output();
a.set_low();
delay();
assert!(b.is_low());
// When an OutputOpenDrain is low, it always reads low.
b.set_low();
a.set_as_input();
a.set_pull(Pull::Up);
delay();
assert!(b.is_low());
a.set_as_output();
a.set_low();
delay();
assert!(b.is_low());
}
// FLEX
// Test initial output
{
//Flex pin configured as input
let mut b = Flex::new(b.reborrow());
b.set_as_input();
{
//Flex pin configured as output
let mut a = Flex::new(a.reborrow()); //Flex pin configured as output
a.set_low(); // Pin state must be set before configuring the pin, thus we avoid unknown state
a.set_as_output();
delay();
assert!(b.is_low());
}
{
//Flex pin configured as output
let mut a = Flex::new(a.reborrow());
a.set_high();
a.set_as_output();
delay();
assert!(b.is_high());
}
}
// Test input no pull
{
let mut b = Flex::new(b.reborrow());
b.set_as_input(); // no pull by default.
let mut a = Flex::new(a.reborrow());
a.set_low();
a.set_as_output();
delay();
assert!(b.is_low());
a.set_high();
delay();
assert!(b.is_high());
}
// Test input pulldown
#[cfg(feature = "rp2040")]
{
let mut b = Flex::new(b.reborrow());
b.set_as_input();
b.set_pull(Pull::Down);
delay();
assert!(b.is_low());
let mut a = Flex::new(a.reborrow());
a.set_low();
a.set_as_output();
delay();
assert!(b.is_low());
a.set_high();
delay();
assert!(b.is_high());
}
// Test input pullup
{
let mut b = Flex::new(b.reborrow());
b.set_as_input();
b.set_pull(Pull::Up);
delay();
assert!(b.is_high());
let mut a = Flex::new(a.reborrow());
a.set_high();
a.set_as_output();
delay();
assert!(b.is_high());
a.set_low();
delay();
assert!(b.is_low());
}
info!("Test OK");
cortex_m::asm::bkpt();
}
fn delay() {
cortex_m::asm::delay(10000);
}
|
