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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::info;
use embassy_executor::Spawner;
use embassy_rp::clocks::{clk_sys_freq, core_voltage, ClockConfig, CoreVoltage};
use embassy_rp::config::Config;
use embassy_time::Instant;
use {defmt_rtt as _, panic_probe as _};
const COUNT_TO: i64 = 10_000_000;
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let mut config = Config::default();
// Initialize with 200MHz clock configuration
config.clocks = ClockConfig::system_freq(200_000_000);
// if we are rp235x, we need to manually set the core voltage. rp2040 should do this automatically
#[cfg(feature = "rp235xb")]
{
config.clocks.core_voltage = CoreVoltage::V1_15;
}
let _p = embassy_rp::init(config);
// We should be at core voltage of 1.15V
assert_eq!(core_voltage().unwrap(), CoreVoltage::V1_15, "Core voltage is not 1.15V");
// We should be at 200MHz
assert_eq!(clk_sys_freq(), 200_000_000, "System clock frequency is not 200MHz");
// Test the system speed
let time_elapsed = {
let mut counter = 0;
let start = Instant::now();
while counter < COUNT_TO {
counter += 1;
}
let elapsed = Instant::now() - start;
elapsed.as_millis()
};
// Tests will fail if unused variables are detected:
// Report the elapsed time, so that the compiler doesn't optimize it away for the chip not on test
info!(
"At {}Mhz: Elapsed time to count to {}: {}ms",
clk_sys_freq() / 1_000_000,
COUNT_TO,
time_elapsed
);
// Check if the elapsed time is within expected limits
// for rp2040 we expect about 600ms
#[cfg(feature = "rp2040")]
// allow 1% error
assert!(time_elapsed < 606, "Elapsed time is too long");
// for rp235x we expect about 450ms
#[cfg(feature = "rp235xb")]
assert!(time_elapsed < 455, "Elapsed time is too long");
cortex_m::asm::bkpt();
}
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