59 lines
1.4 KiB
Rust
Executable file
59 lines
1.4 KiB
Rust
Executable file
//! This example shows how a embedded program can be written that is testable on the host with
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//! libtest.
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//!
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//! The tests can be run with:
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//! ```bash
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//! cargo test --example=test-on-host --target=x86_64-unknown-linux-gnu
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//! ```
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#![cfg_attr(not(test), no_main)]
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#![no_std]
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#[cfg(not(test))]
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extern crate panic_halt;
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use hal::{pac, prelude::*, rcc::Config};
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#[cfg_attr(not(test), cortex_m_rt::entry)] // this is the entrypoint unless testing
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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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// Configure the clock.
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let mut rcc = dp.RCC.freeze(Config::hsi16());
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// Acquire the GPIOA peripheral. This also enables the clock for GPIOA in
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// the RCC register.
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let gpioa = dp.GPIOA.split(&mut rcc);
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// Configure PA5 as output.
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let mut led = gpioa.pa5.into_push_pull_output();
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// Get the delay provider.
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let mut delay = cp.SYST.delay(rcc.clocks);
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loop {
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led.set_high().unwrap();
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delay.delay_ms(500_u16);
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let important_number = some_function(19);
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delay.delay_ms(important_number as u16);
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led.set_low().unwrap();
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delay.delay_ms(500_u16);
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}
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}
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fn some_function(num: i32) -> i32 {
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num * 2
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}
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#[cfg(test)]
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mod tests {
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use crate::some_function;
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#[test]
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fn test_it_works() {
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assert_eq!(some_function(9), 18)
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}
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}
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