Chapter3: power2/3/5 & sleep test worked on k210/qemu based on timer.

user/src/bin/00power_3.rs

@@ -0,0 +1,28 @@
+#![no_std]
+#![no_main]
+
+#[macro_use]
+extern crate user_lib;
+
+const LEN: usize = 100;
+
+#[no_mangle]
+fn main() -> i32 {
+    let p = 3u64;
+    let m = 998244353u64;
+    let iter: usize = 100000;
+    let mut s = [0u64; LEN];
+    let mut cur = 0usize;
+    s[cur] = 1;
+    for i in 1..=iter {
+        let next = if cur + 1 == LEN { 0 } else { cur + 1 };
+        s[next] = s[cur] * p % m;
+        cur = next;
+        if i % 10000 == 0 {
+            println!("power_3 [{}/{}]", i, iter);
+        }
+    }
+    println!("{}^{} = {}", p, iter, s[cur]);
+    println!("Test power_3 OK!");
+    0
+}

user/src/bin/00write_a.rs

@@ -1,21 +0,0 @@
-#![no_std]
-#![no_main]
-
-#[macro_use]
-extern crate user_lib;
-
-use user_lib::sys_yield;
-
-const WIDTH: usize = 10;
-const HEIGHT: usize = 5;
-
-#[no_mangle]
-fn main() -> i32 {
-    for i in 0..HEIGHT {
-        for _ in 0..WIDTH { print!("A"); }
-        println!(" [{}/{}]", i + 1, HEIGHT);
-        sys_yield();
-    }
-    println!("Test write_a OK!");
-    0
-}

user/src/bin/01power_5.rs

@@ -0,0 +1,28 @@
+#![no_std]
+#![no_main]
+
+#[macro_use]
+extern crate user_lib;
+
+const LEN: usize = 100;
+
+#[no_mangle]
+fn main() -> i32 {
+    let p = 5u64;
+    let m = 998244353u64;
+    let iter: usize = 70000;
+    let mut s = [0u64; LEN];
+    let mut cur = 0usize;
+    s[cur] = 1;
+    for i in 1..=iter {
+        let next = if cur + 1 == LEN { 0 } else { cur + 1 };
+        s[next] = s[cur] * p % m;
+        cur = next;
+        if i % 10000 == 0 {
+            println!("power_5 [{}/{}]", i, iter);
+        }
+    }
+    println!("{}^{} = {}", p, iter, s[cur]);
+    println!("Test power_5 OK!");
+    0
+}

user/src/bin/01write_b.rs

@@ -1,21 +0,0 @@
-#![no_std]
-#![no_main]
-
-#[macro_use]
-extern crate user_lib;
-
-use user_lib::sys_yield;
-
-const WIDTH: usize = 10;
-const HEIGHT: usize = 2;
-
-#[no_mangle]
-fn main() -> i32 {
-    for i in 0..HEIGHT {
-        for _ in 0..WIDTH { print!("B"); }
-        println!(" [{}/{}]", i + 1, HEIGHT);
-        sys_yield();
-    }
-    println!("Test write_b OK!");
-    0
-}

user/src/bin/02power_7.rs

@@ -0,0 +1,28 @@
+#![no_std]
+#![no_main]
+
+#[macro_use]
+extern crate user_lib;
+
+const LEN: usize = 100;
+
+#[no_mangle]
+fn main() -> i32 {
+    let p = 7u64;
+    let m = 998244353u64;
+    let iter: usize = 80000;
+    let mut s = [0u64; LEN];
+    let mut cur = 0usize;
+    s[cur] = 1;
+    for i in 1..=iter {
+        let next = if cur + 1 == LEN { 0 } else { cur + 1 };
+        s[next] = s[cur] * p % m;
+        cur = next;
+        if i % 10000 == 0 {
+            println!("power_7 [{}/{}]", i, iter);
+        }
+    }
+    println!("{}^{} = {}", p, iter, s[cur]);
+    println!("Test power_7 OK!");
+    0
+}

user/src/bin/02write_c.rs

@@ -1,21 +0,0 @@
-#![no_std]
-#![no_main]
-
-#[macro_use]
-extern crate user_lib;
-
-use user_lib::sys_yield;
-
-const WIDTH: usize = 10;
-const HEIGHT: usize = 3;
-
-#[no_mangle]
-fn main() -> i32 {
-    for i in 0..HEIGHT {
-        for _ in 0..WIDTH { print!("C"); }
-        println!(" [{}/{}]", i + 1, HEIGHT);
-        sys_yield();
-    }
-    println!("Test write_c OK!");
-    0
-}

user/src/bin/03sleep.rs

@@ -0,0 +1,18 @@
+#![no_std]
+#![no_main]
+
+#[macro_use]
+extern crate user_lib;
+
+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;
+    while sys_get_time() < wait_for {
+        sys_yield();
+    }
+    println!("Test sleep OK!");
+    0
+}