#include <stdio.h> #include <string.h> #include <stdlib.h> #include <fcntl.h> const char thermal_path[] = "/sys/class/thermal/thermal_zone0/temp"; int main(int argv, char *argc[]) { int fd = 0; int ret = 0; int i; char mbuf[128] = {0,}; float temp = 0.0; fd = open(thermal_path, O_RDONLY); if(fd < 0) { printf("open file[%s] failed\n", thermal_path); return (0); } while(1) { memset(mbuf, 0, 128); lseek(fd, 0, SEEK_SET); ret = read(fd, mbuf, 128); if(ret < 0) { printf("read file failed\n"); close(fd); return (0); } temp = atof(mbuf); temp = temp / 1000.0; printf("thermel temp = %f\n", temp); sleep(1); } close(fd); return (0); }
板载温度计的采集
![](http://www.cghlg.com/uphotos/jobs/thumb/avatar.jpg)
官方已经提供了温度计的实现,所以我们直接打开文件即可,前有两位网友使用cat命令来读取,楼主这里使用文件打开的方式读取,测试效果还是不错的,现将源代码分享出来,供大家借鉴:
关键词: 温度计 采集 imx6
![](http://www.cghlg.com/uphotos/machinnneee/thumb/avatar.jpg)
![](http://www.cghlg.com/uphotos/nelsonzhang/thumb/avatar.jpg)
![](http://www.cghlg.com/uphotos/1618804331/thumb/avatar.jpg)
![](http://www.cghlg.com/uphotos/1416454888/thumb/avatar.jpg)
![](http://www.cghlg.com/uphotos/1473746832/thumb/avatar.jpg)
![](http://www.cghlg.com/uphotos/1473746832/thumb/avatar.jpg)
![](http://www.cghlg.com/uphotos/1473746832/thumb/avatar.jpg)
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