PI_sunyang的博客

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <fcntl.h> #include <unistd.h> #include <sys/types.h>int main () { int fd1,fd2,ret; char str[] = "You are foolish"; char b

void send_char_com( unsigned char ch) { ES=0; TI=0; SBUF=ch; while (!TI ); TI= 0 ; ES=1 ; } void main() { SCON = 0x50; //串口方式1,允许接收 TMOD = 0x20; //定时器1定时方式2 PCON=0x00; //cup正常工作 TCON = 0x50; //设定时器1开始计

#include <stdio.h> #include <string.h> #include <stdlib.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h>int main(void) { int fd, bytenum; int currpos; char wbuf[10] = "123

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include <fcntl.h> #include <unistd.h>void *mymemcpy(void *desc,const void * src,size_t size) { if((desc == NULL) && (

#include <stdio.h>int main(void) { short int x; char x0,x1; x = 0x1234; x0 = ((char *)&x)[0];//低地址 x1 = ((char *)&x)[1];//高地址 printf("x0 = 0x%x , x1 = 0x%x\n",x0,x1 ); return

1.ls /proc 2.cat /proc/version 查看内核版本 lsb_release -a

c training 1.利用全局变量（毒药） #include //input five int numbers,return min & max, in one function int min_element; int max_element; int min_max(int a,int b,int c) { int t; if (a > b) {

linux application access i2c device #include &lt;sys/ioctl.h&gt; #include &lt;fcntl.h&gt; #include &lt;linux/i2c-dev.h&gt; #include &lt;linux/i2c.h&gt; #define CHIP "/dev/i2c-1" #define CHIP_AD...