嵌入式编程实现记录开发板启动次数

我们在有些试验的时候，需要记录开发板的启动次数，看是否启动成功，用于判断是否符合标准，但是我们又不想自行人工的去数启动的次数，这里就使用一个小程序来实现
代码如下：

#include <stdio.h>  
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

void help()
{
    printf("Param is incorrect,Please check it \n");
    printf("Usage:   runtimes filename(filename path is absulute path)\n");
    //printf("\nfilename : the filename you want to savefile\r\n");
    return ;
}

int main(int arc, char *argv[])
{
    if(arc !=2)
    {
        help();
        exit(0);
    }
    //printf("argv[1]=%s\r\n",argv[1]);
    FILE *fp = NULL;
    char *str="";
    fp = fopen (argv[1], "r");
    if (fp == NULL) //file is not found,then counts=0,create file and write 0 count
    {   
        fp = fopen (argv[1], "w+");
        fprintf(fp,"PowerOn counts is 1\r\n");
        printf("PowerOn counts is %d\n",1);
        fclose(fp);
        exit(0);      
    }
    else
    {
        //calc this file have lines
        int ch;
        int lines=1;       
        while((ch = fgetc(fp)) != EOF)
        {
            if(ch == '\n')
                lines++;
        }
        fclose(fp);

        //reopen file and write lines+1        
        fp = fopen (argv[1], "a");        
        fprintf(fp,"PowerOn counts is %d\r\n",lines);
        fclose(fp);
        printf("PowerOn counts is %d\n",lines);
        exit(0);             
    }   
    return 0;
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53

编译成arm系统下的执行文件，拷贝到开发板中。
执行如下：
root@imx6ulevk:~# ./runtimes ~
Segmentation fault
root@imx6ulevk:~# ./runtimes ~/runtimes.log
PowerOn counts is 1
root@imx6ulevk:~# ./runtimes ~/runtimes.log
PowerOn counts is 2
root@imx6ulevk:~# ./runtimes ~/runtimes.log
PowerOn counts is 3
root@imx6ulevk:~# ./runtimes ~/runtimes.log
PowerOn counts is 4
程序执行成功，然后将这个命令放入到启动时执行的脚本中，就可以自动实现了。

具体如何将文件加入到开发板的启动序列中，查阅自己的开发板的手册或者参考我以前发的文章吧。

下面我们可能进行嵌入式系统的通讯接口的编程实现，欢迎关注。

创作不易，点个赞再走呗，期待共同提高。