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84fe476
Adds a basic FPU test.
thejpster Oct 12, 2025
bcab2e8
Merge branch 'main' into add-fpu-test
thejpster Oct 13, 2025
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1 change: 1 addition & 0 deletions examples/mps3-an536/Cargo.toml
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Expand Up @@ -22,6 +22,7 @@ semihosting = { version = "0.1.18", features = ["stdio"] }
arm-gic = { version = "0.7.1", optional = true }
critical-section = "1.2.0"
heapless = "0.9.1"
libm = "0.2.15"
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Should this be optional as with gic?

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So I was thinking about that feature. For the examples I'm inclined to make the GIC crate mandatory and remove the feature. If you don't want to use the GIC, don't use it. I don't know it makes the examples better if they show how to make your interrupt controller optional?

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If it was in the cortex-ar crate then yeah, totally should be optional.

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@korken89 korken89 Oct 13, 2025 •
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Yeah, I mean examples are not really held by SemVer anyways. I think easy running of examples triumphs 👍

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But lets take that in another PR, I can help out with that small thing. :)


[build-dependencies]
arm-targets = {version = "0.3.0", path = "../../arm-targets"}
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202 changes: 202 additions & 0 deletions examples/mps3-an536/reference/fpu-test-armv8r-none-eabihf.out
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Sine wave test (f32)...
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Sine wave test (f64)...
( 0.0000) ..............................o
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40 changes: 40 additions & 0 deletions examples/mps3-an536/src/bin/fpu-test.rs
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//! Simple FPU test

#![no_std]
#![no_main]

// pull in our start-up code
use cortex_r_rt::entry;

// pull in our library
use mps3_an536 as _;

use semihosting::println;

static BAR: &str = "............................................................";
const MAX_LEN: f32 = BAR.len() as f32;

/// The entry-point to the Rust application.
///
/// It is called by the start-up code in `cortex-r-rt`.
#[entry]
fn main() -> ! {
const STEPS: u32 = 100;
const RADIANS_PER_STEP: f32 = (2.0 * core::f32::consts::PI) / 50.0;
println!("Sine wave test (f32)...");
for row in 0u32..100u32 {
let angle = (row as f32) * RADIANS_PER_STEP;
let sine = libm::sinf(angle);
let bar_len = ((sine + 1.0) * (MAX_LEN / 2.0)) as usize;
println!("({:7.04}) {:.*}o", sine, bar_len, BAR);
}

println!("Sine wave test (f64)...");
for row in 0u32..100u32 {
let angle = (row as f64) * f64::from(RADIANS_PER_STEP);
let sine = libm::sin(angle);
let bar_len = ((sine + 1.0) * (f64::from(MAX_LEN) / 2.0)) as usize;
println!("({:7.04}) {:.*}o", sine, bar_len, BAR);
}
semihosting::process::exit(0);
}
1 change: 1 addition & 0 deletions examples/versatileab/Cargo.toml
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Expand Up @@ -20,6 +20,7 @@ cortex-ar = { path = "../../cortex-ar", features = ["critical-section-single-cor
cortex-a-rt = { path = "../../cortex-a-rt" }
cortex-r-rt = { path = "../../cortex-r-rt" }
semihosting = { version = "0.1.18", features = ["stdio"] }
libm = "0.2.15"
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Should this be optional?


[build-dependencies]
arm-targets = { version = "0.3.0", path = "../../arm-targets" }
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