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修复 get_time_us 的精度问题 #4

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修复 get_time_us 的精度问题 #4

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2 changes: 1 addition & 1 deletion os/src/timer.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -14,7 +14,7 @@ pub fn get_time() -> usize {

/// get current time in microseconds
pub fn get_time_us() -> usize {
time::read() / (CLOCK_FREQ / MICRO_PER_SEC)
(time::read() as f64 / (CLOCK_FREQ as f64 / MICRO_PER_SEC as f64)) as _
}

/// set the next timer interrupt
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