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improve x86 rtc
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lhw2002426 committed Feb 27, 2024
1 parent 07a16d5 commit 9c6d491
Showing 1 changed file with 21 additions and 2 deletions.
23 changes: 21 additions & 2 deletions modules/ruxhal/src/time.rs
Original file line number Diff line number Diff line change
Expand Up @@ -42,11 +42,30 @@ pub fn current_time_nanos() -> u64 {
ticks_to_nanos(current_ticks())
}

#[cfg(all(feature = "rtc", target_arch = "x86_64"))]
pub static mut BASE_TIME: u64 = 0;
#[cfg(all(feature = "rtc", target_arch = "x86_64"))]
pub static mut LAST_TIME: u64 = 0;

/// Returns the current clock time in [`TimeValue`].
#[allow(unreachable_code)]
pub fn current_time() -> TimeValue {
#[cfg(any(target_arch = "x86_64", target_arch = "aarch64"))]
#[cfg(feature = "rtc")]
#[cfg(all(feature = "rtc", target_arch = "x86_64"))]
{
unsafe {
let nanos = current_time_nanos();
if BASE_TIME == 0 {
BASE_TIME = rtc_read_time();
}
if (nanos / NANOS_PER_SEC) - LAST_TIME > 1800 {
BASE_TIME = rtc_read_time() - (nanos / NANOS_PER_SEC);
LAST_TIME = nanos / NANOS_PER_SEC;
}
let rtc_time = BASE_TIME + (nanos / NANOS_PER_SEC);
return Duration::new(rtc_time, (nanos % (NANOS_PER_SEC)) as u32);
}
}
#[cfg(all(feature = "rtc", target_arch = "aarch64"))]
{
let nanos = current_time_nanos();
let rtc_time = rtc_read_time();
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