53 lines
1.3 KiB
Rust
53 lines
1.3 KiB
Rust
#![no_std]
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#![no_main]
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#![feature(type_alias_impl_trait)]
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teleprobe_meta::target!(b"rpi-pico");
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use defmt::*;
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use embassy_executor::Spawner;
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use embassy_rp::pac;
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use embassy_time::Timer;
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use {defmt_rtt as _, panic_probe as _};
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#[embassy_executor::main]
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async fn main(_spawner: Spawner) {
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embassy_rp::init(Default::default());
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info!("Hello World!");
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const PI_F: f32 = 3.1415926535f32;
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const PI_D: f64 = 3.14159265358979323846f64;
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pac::BUSCTRL
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.perfsel(0)
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.write(|r| r.set_perfsel(pac::busctrl::vals::Perfsel::ROM));
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for i in 0..=360 {
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let rad_f = (i as f32) * PI_F / 180.0;
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info!(
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"{}° float: {=f32} / {=f32} / {=f32} / {=f32}",
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i,
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rad_f,
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rad_f - PI_F,
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rad_f + PI_F,
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rad_f % PI_F
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);
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let rad_d = (i as f64) * PI_D / 180.0;
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info!(
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"{}° double: {=f64} / {=f64} / {=f64} / {=f64}",
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i,
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rad_d,
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rad_d - PI_D,
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rad_d + PI_D,
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rad_d % PI_D
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);
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Timer::after_millis(10).await;
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}
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let rom_accesses = pac::BUSCTRL.perfctr(0).read().perfctr();
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// every float operation used here uses at least 10 cycles
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defmt::assert!(rom_accesses >= 360 * 12 * 10);
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info!("Test OK");
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cortex_m::asm::bkpt();
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}
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