aixiao
084f378a18
增加 dth11 温度湿度传感器 目前工作的有DS18B20温度传感、DTH11温度湿度传感器 未测试的有info_sound、info_ultrasound、info_infrared二进制程序 修改： gpio/Makefile 新文件： gpio/conf/info.conf 新文件： gpio/dth11.c 删除： gpio/info_infrared 修改： gpio/info_infrared.c 删除： gpio/info_light 修改： gpio/info_light.c 删除： gpio/info_pin 修改： gpio/info_pin.c 删除： gpio/info_sound 修改： gpio/info_sound.c 删除： gpio/info_ultrasound 修改： gpio/info_ultrasound.c 修改： gpio/log/light.pid 修改： gpio/log/wind.pid 新文件： gpio/log/wind_daemon.pid 删除： gpio/wind 修改： gpio/wind.c
84 lines
1.5 KiB
C
84 lines
1.5 KiB
C
/* DS18B20 温度传感器
|
|
*
|
|
*
|
|
*/
|
|
|
|
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <dirent.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
#include <stdlib.h>
|
|
|
|
#define N 99
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int _main(char *optarg);
|
|
|
|
int ch;
|
|
opterr = 0;
|
|
while((ch = getopt(argc, argv, "d:h?")) != -1)
|
|
switch (ch) {
|
|
case 'd':
|
|
_main(optarg);
|
|
break;
|
|
case 'h': case '?':
|
|
printf("wind -d device\n");
|
|
exit(0);
|
|
break;
|
|
default:
|
|
;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int _main(char *optarg)
|
|
{
|
|
char path[50] = "/sys/bus/w1/devices/";
|
|
char rom[20];
|
|
char buffer[N+1];
|
|
DIR *dirp;
|
|
struct dirent *direntp;
|
|
FILE *fp;
|
|
char *temp;
|
|
float value;
|
|
//char *device; // 设备
|
|
//if(optarg == '\0') {
|
|
// strcmp(device, optarg);
|
|
//}
|
|
system("sudo modprobe w1-gpio");
|
|
system("sudo modprobe w1-therm");
|
|
if((dirp = opendir(path)) == NULL) {
|
|
exit(0);
|
|
}
|
|
|
|
while((direntp = readdir(dirp)) != NULL) {
|
|
if(strstr(direntp->d_name, optarg)) {
|
|
strcpy(rom, direntp->d_name);
|
|
}
|
|
}
|
|
closedir(dirp);
|
|
|
|
strcat(path, rom);
|
|
strcat(path, "/w1_slave");
|
|
//printf("%s\n", path);
|
|
|
|
if ((fp = fopen(path, "r")) < 0) {
|
|
exit(0); /* 文件不存在,则退出. */
|
|
}
|
|
while(fgets(buffer, N, fp) != NULL){
|
|
;
|
|
}
|
|
|
|
temp = strchr(buffer, 't');
|
|
sscanf(temp, "t=%s", temp);
|
|
value = atof(temp) / 1000;
|
|
printf("%.0f\n", value);
|
|
|
|
fclose(fp);
|
|
return value;
|
|
}
|