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love1angel · Nov 26, 2024 · a9a35aa · a9a35aa
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diff --git a/org-roam/20241009152415-abbreviation.org b/org-roam/20241009152415-abbreviation.org
@@ -16,17 +16,20 @@
 
 * AD (Autonomous Driving)
 
-    | SLAM    | Simultaneous Localization and Mapping |                                            |
-    |         |                                       |                                            |
-    | TOR     | Take OveR                             |                                            |
-    | ADAS    | Autonomous Driving Assistance System  |                                            |
-    |         |                                       |                                            |
-    | SWA     | Side Warning Assist                   | 变道辅助，在变道时检测车辆侧面或后面的盲区 |
-    | LCA     | Lane Change Assist                    | 类似 SWA                                   |
-    |         |                                       |                                            |
-    | USS     | Ultrasonic Sensor System              | 超声波雷达                                 |
-    |         |                                       |                                            |
-    | scooter |                                       | 踏板摩托车                                 |
+    | SLAM      | Simultaneous Localization and Mapping |                                            |
+    |           |                                       |                                            |
+    | TOR       | Take OveR                             |                                            |
+    | ADAS      | Autonomous Driving Assistance System  |                                            |
+    |           |                                       |                                            |
+    | SWA       | Side Warning Assist                   | 变道辅助，在变道时检测车辆侧面或后面的盲区 |
+    | LCA       | Lane Change Assist                    | 类似 SWA                                   |
+    |           |                                       |                                            |
+    | USS       | Ultrasonic Sensor System              | 超声波雷达                                 |
+    |           |                                       |                                            |
+    | scooter   |                                       | 踏板摩托车                                 |
+    |           |                                       |                                            |
+    | Cartesian |                                       | adj. 笛卡尔坐标系                          |
+    |           |                                       |                                            |
 
 * Maths
 
@@ -56,6 +59,9 @@
     | AKA   | Also Known As    |
     | TBH   | To Be Honest     |
     | WIP   | Work In Progress |
+    |       |                  |
+    | i.e.  | that is          |
+    | e.x.  | for example      |
 
 * life
 

diff --git a/org-roam/20241021141129-misc.org b/org-roam/20241021141129-misc.org
@@ -13,26 +13,15 @@ git push --set-upstream origin ft_panda/enable_v2x
 diff -Naur APATH BPATH
 
 
-滴答定时器中断频率 = 时间片
-中断是一瞬间的事情，中断服务程序不能做过多的事情，特别是延时，通常是设置标志位
 
-有优先级，可抢断
 
-ucos 调用系统延迟函数，挂起，低优先级任务可以执行
+ps -A | grep
 
-中断嵌套，高优先级可以打断低优先级中断
+strace -c -p <pid>
 
-中断可以打断任意任务
+taskset -c 7 perf stat ./play
 
-高优先级一直执行，低优先级执行不会执行
+perf report
 
-[file:img/1.png]
 
-《Cortex M3 权威指南(中文)》
-《Cortex M3 与 M4 权威指南》
-
-1. 任务调度器
-2. 任务启动流程，中断管理，任务切换
-3. 队列，信号量，内存管理
-
-[file:img/3.png]
+Intensity/Reflectivity lidar
diff --git a/org-roam/20241108104935-nix.org b/org-roam/20241108104935-nix.org
@@ -8,13 +8,14 @@
 不在系统区域可见
 nix-shell -p neofetch --run neofetch
 
+https://github.com/LnL7/nix-darwin
 
 mkdir -p ~/.config/nix/nix-darwin
 cd ~/.config/nix/nix-darwin
 nix flake init -t nix-darwin --extra-experimental-features "nix-command flakes"
 
 
-改完配置
+改完配置，不是 #mac 就是默认用户名
 nix run nix-darwin --extra-experimental-features "nix-command flakes" -- switch --flake ~/.config/nix/nix-darwin#mac
 
 which darwin-rebuild
@@ -24,18 +25,9 @@ darwin-rebuild switch --flake ~/.config/nix/nix-darwin#mac
 nix search nixpkgs tmux
 
 
-
-** test
-
-$ nix-shell -p git --run 'git clone xxx.git ~/.dotfiles'
-$ nix run nix-darwin --extra-experimental-features "nix-command flakes"  -- switch --flake ~/.dotfiles/nix/darwin#
-
-$ nix run nix-darwin --extra-experimental-features "nix-command flakes"  -- switch --flake ~/.config/nix-darwin#heli
-
-
 ** under
 
-$ git revert
+$ git revert <commit hash>
 $ darwin-rebuild switch --rollback
 
 
@@ -53,3 +45,8 @@ darwin-rebuild
 }
 
 mynixos.com
+
+** build
+
+$ nix-shell -p git --run 'git clone xxx.git ~/.dotfiles'
+$ nix run nix-darwin --extra-experimental-features "nix-command flakes"  -- switch --flake ~/.config/nix/nix-darwin#mac
diff --git a/org-roam/20241113165318-ucos3.org b/org-roam/20241113165318-ucos3.org
@@ -0,0 +1,36 @@
+:PROPERTIES:
+:ID:       580F87C8-EE19-4D9C-BF07-239125D14348
+:END:
+#+title: ucos3
+
+ucos3 micro C O S three
+
+滴答定时器中断频率 = 时间片
+中断是一瞬间的事情，中断服务程序不能做过多的事情，特别是延时，通常是设置标志位
+
+有优先级，可抢断
+
+ucos 调用系统延迟函数，挂起，低优先级任务可以执行
+
+裸机又称为前后台系统，前台系统指的是中断服务函数，后台指的大循环
+
+
+中断可以嵌套，高优先级可以打断低优先级中断
+
+中断可以打断任意任务，是内核层的，软件优先级是软件层面的
+
+高优先级一直执行，除非进入挂起态，否则低优先级执行不会执行
+
+* 2
+
+[file:img/1.png]
+
+《Cortex M3 权威指南(中文)》
+《Cortex M3 与 M4 权威指南》
+
+1. 任务调度器
+2. 任务启动流程，中断管理，任务切换
+3. 队列，信号量，内存管理
+
+[file:img/2.png]
+[file:img/3.png]
diff --git a/org-roam/algorithm/sort/20241126154919-sort.org b/org-roam/algorithm/sort/20241126154919-sort.org
@@ -0,0 +1,6 @@
+:PROPERTIES:
+:ID:       0465412E-68B1-42E9-9886-9D843AE4FCB2
+:END:
+#+title: sort
+
+1. [[id:6E287A86-F44B-4234-8F25-5BA46A008263][heap sort]]
diff --git a/org-roam/algorithm/sort/heapsort/20241126154928-heap_sort.org b/org-roam/algorithm/sort/heapsort/20241126154928-heap_sort.org
@@ -0,0 +1,16 @@
+:PROPERTIES:
+:ID:       6E287A86-F44B-4234-8F25-5BA46A008263
+:END:
+#+title: heap sort
+
+* heap sort
+
+|              |                 |          |
+|--------------+-----------------+----------|
+| std::greater | descending sort | min heap |
+| std::less    | ascending sort  | max heap |
+
+
+make_heap() 默认是构造最大堆，在 pop_heap() 后，将最大的移到了 back 位置
+
+堆排序就是不停构造堆，并且交换
diff --git a/org-roam/csdiy/20241012221708-zju_93001.org b/org-roam/csdiy/20241012221708-zju_93001.org
@@ -12,14 +12,26 @@
 3. 解决问题的效率，和算法的巧妙程度有关
 
 * CH1
+
+逻辑结构：线性结构，树结构，图结构
+
+物理结构：数组，链表
+
+抽象数据类型：abstract data type
+
+矩阵：二维数组，十字链表
+
 #+begin_src c
+// calc duration
 #include <time.h>
 #include <stdio.h>
 
 int main()
 {
     clock_t i1 = clock();
     clock_t i2 = clock();
+
+    // printf("%lf\n", (double)(i2 - i1) / CLK_TCK);
     printf("%lf\n", (double)(i2 - i1) / CLOCKS_PER_SEC);
     return 0;
 }

diff --git a/org-roam/img/2.png b/org-roam/img/2.png
diff --git a/org-roam/img/3.png b/org-roam/img/3.png
diff --git a/org-roam/img/Screenshot 2024-11-05 at 14.24.36.png b/org-roam/img/Screenshot 2024-11-05 at 14.24.36.png
diff --git a/org-roam/org-roam.db b/org-roam/org-roam.db