[C#] XML

資料收集:
https://dotblogs.com.tw/yc421206/2010/08/10/17108

[Linux] Kernel函式庫

Kernel

●忙碌等待(busy wait)
會占住CPU,不讓CPU處理其他事,不適合長時間使用.

#include <linux/delay.h>
void mdelay(unsigned long msecs); //毫秒
void udelay(unsigned long msecs); //微秒
void ndelay(unsigned long msecs); //奈秒


●不忙碌等待(non-busy wait)

#include <linux/delay.h>
void ssleep(unsigned int seconds);
void msleep(unsigned int mecs);
unsigned long msleep_interruptible(unsigned int mecs);

[C] 函式庫(Library)

●ASCII ->Hex

unsigned long int strtoul(const char *str, char **endptr, int base)

str: string

endptr:

base: 這是基數，2~36，或者是特殊值0。

●取絕對值

#include <stdlib.h>

int abs (int j);

●讓程式空轉以達到延遲

__NOP();

●小寫字母轉大寫
int toupper(int c);

access

http://naeilproj.blogspot.com/2015/08/linux-c-c.html

bswap_32

https://man7.org/linux/man-pages/man3/bswap.3.html

dump_stack();

#include <linux/kprobes.h>

#include <asm/traps.h>

●stroul

char ptr; 

u32 value stroul("1234", ptr, 10);

把string 1234轉成value 1234

10表10進位(base)

●atoi

value → string

●strcat

●sscanf

●strstr

char *p strstr("abcde", "de")

在abcde中找de, *p為d的位置

●snprintf / fprintf

https://iamcgod.blogspot.com/2023/03/c-fprintf-sprintf.html

[C#] 例外處理

例外處理(Exception)

[C#] StatusStrip

 1.從工具箱拉StatusStrip,並照下步驟拉兩個StatusLabel.

2.第一個StatusStrip叫Status並修改外觀,第二個無預設名稱.

3.toolStripStatusLabel2.Text = "Test";

[C#] byte/char/string轉換

●byte → char

byte[] byte1 = new byte[5]{0x01,0x02,0x03,0x04,0x05};
char[] char1 = Encoding.ASCII.GetChars(byte1);


●char → byte

char[] char1 = new char[5]{a,b,c,d,e};
byte[] byte1 = Encoding.Default.GetBytes(char1 );


●string  → char[]

string string1 = "abcde";
char[] char1 = string1.ToCharArray(); 

●string  → byte[]

string string1 = "abcde"; 

byte[] byte1 = Encoding.UTF8.GetBytes(string1);

 

●byte[]  → string

byte[] byte1 = new byte[5] { 0x31, 0x32, 0x33, 0x34, 0x35 };

string string1 = Encoding.UTF8.GetString(byte1);

[Linux] Note

 thread介紹

https://blog.gtwang.org/programming/pthread-multithreading-programming-in-c-tutorial/

Ubuntu Linux 中使用網路芳鄰分享目錄

https://blog.gtwang.org/linux/ubuntu-linux-share-files-with-windows/

cross compiler: 編譯出來的程式不是給自己用

各版本kernel code

https://elixir.bootlin.com/linux/v5.18.3/source/net