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Update sys_time unit to ms && Update clock freq of K210.

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This commit is contained in:
Yifan Wu 2020-12-29 21:49:51 +08:00
parent 62513f62fe
commit e4fee9944e
4 changed files with 13 additions and 8 deletions
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4
os/src/config.rs
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@ -5,7 +5,7 @@ pub const APP_BASE_ADDRESS: usize = 0x80100000;
pub const APP_SIZE_LIMIT: usize = 0x20000;
#[cfg(feature = "board_k210")]
pub const CPU_FREQ: usize = 10000000;
pub const CLOCK_FREQ: usize = 403000000 / 62;
#[cfg(feature = "board_qemu")]
pub const CPU_FREQ: usize = 12500000;
pub const CLOCK_FREQ: usize = 12500000;

4
os/src/syscall/process.rs
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@ -2,7 +2,7 @@ use crate::task::{
suspend_current_and_run_next,
exit_current_and_run_next,
};
use crate::timer::get_time;
use crate::timer::get_time_ms;
pub fn sys_exit(xstate: i32) -> ! {
println!("[kernel] Application exited with code {}", xstate);
@ -16,5 +16,5 @@ pub fn sys_yield() -> isize {
}
pub fn sys_get_time() -> isize {
get_time() as isize
get_time_ms() as isize
}

11
os/src/timer.rs
View File

@ -1,13 +1,18 @@
use riscv::register::time;
use crate::sbi::set_timer;
use crate::config::CPU_FREQ;
use crate::config::CLOCK_FREQ;
const TICKS_PER_SEC: usize = 100;
const MSEC_PER_SEC: usize = 1000;
pub fn get_time() -> usize {
time::read()
}
pub fn set_next_trigger() {
set_timer(get_time() + CPU_FREQ / TICKS_PER_SEC);
pub fn get_time_ms() -> usize {
time::read() / (CLOCK_FREQ / MSEC_PER_SEC)
}
pub fn set_next_trigger() {
set_timer(get_time() + CLOCK_FREQ / TICKS_PER_SEC);
}

2
user/src/bin/03sleep.rs
View File

@ -9,7 +9,7 @@ use user_lib::{sys_get_time, sys_yield};
#[no_mangle]
fn main() -> i32 {
let current_timer = sys_get_time();
let wait_for = current_timer + 10000000;
let wait_for = current_timer + 3000;
while sys_get_time() < wait_for {
sys_yield();
}