", SOFT_WDT_DEV); timeout = 7; printf("set timeout to %d ", timeout); ioctl(fd, WDIOC_SETTIMEOUT, &timeout); timeout = 0; ioctl(fd, WDIOC_GETTIMEOUT, &timeout); printf("get timeout returns %d ", timeout); ioctl(fd, WDIOC_GETSUPPORT, &ident); printf("dog name is %s ...
#define WDIOC_SETTIMEOUT _IOWR(WATCHDOG_IOCTL_BASE, 6, int) #define WDIOC_GETTIMEOUT _IOR(WATCHDOG_IOCTL_BASE, 7, int) #define WDIOC_SETPRETIMEOUT _IOWR(WATCHDOG_IOCTL_BASE, 8, int) #define WDIOC_GETPRETIMEOUT _IOR(WATCHDOG_IOCTL_BASE, 9, int) #define WDIOC_GETTIMELEFT _IOR(WA...
->WDIOC_SETTIMEOUT--设置timeout。 ->WDIOC_GETTIMEOUT--获取timeout值。 ->WDIOC_SETPRETIMEOUT--设置pretimeout。 ->WDIOC_GETPRETIMEOUT--获取pretimeout。 ->WDIOC_GETTIMELEFT--获取到reboot的剩余时间。 watchdog_write()是对watchdog进行喂狗接口: watchdog_write--写入任意字符都触发ping进行喂狗。
#define WDIOC_GETBOOTSTATUS _IOR(WATCHDOG_IOCTL_BASE, 2, int) #define WDIOC_GETTEMP _IOR(WATCHDOG_IOCTL_BASE, 3, int) #define WDIOC_SETOPTIONS _IOR(WATCHDOG_IOCTL_BASE, 4, int) #define WDIOC_KEEPALIVE _IOR(WATCHDOG_IOCTL_BASE, 5, int) #define WDIOC_SETTIMEOUT _IOWR(WATCHDOG_IOCT...
timeout = atoi(argv[2]); printf("Timeout = %ds\n", timeout); //设置超时 ioctl(fd, WDIOC_SETTIMEOUT, &timeout); break; case 1: //喂狗 ioctl(fd, WDIOC_KEEPALIVE, NULL); break; default: break; } close(fd); return 0; }复制代码 第16行打开设备。第23行使...
ioctl(fd, WDIOC_SETTIMEOUT, &timeout); printf("The timeout was set to %d seconds\n", timeout); 如果设备的超时值的粒度只能到分钟,则这个例子可能实际打印"The timeout was set to 60 seconds"。 自从Linux 2.4.18内核,通过GETTIMEOUT ioctl命令查询当前超时值也是可能的: ...
ioctl(fd, WDIOC_SETTIMEOUT, &timeout); printf("The timeout was set to %d seconds\n", timeout); 如果设备的超时值的粒度只能到分钟,则这个例子可能实际打印"The timeout was set to 60 seconds"。 自从Linux 2.4.18内核,通过GETTIMEOUT ioctl命令查询当前超时值也是可能的: ...
int timeout = 15; // 设置超时时间为15秒 if (ioctl(fd, WDIOC_SETTIMEOUT, &timeout) == -1) { perror("cannot set watchdog timeout"); close(fd); return 1; } 定期喂狗: c while (1) { if (write(fd, " ", 1) != 1) { perror("cannot feed the watchdog"); break; ...
"Watchdog is started at boot time if set to 1, default=" __MODULE_STRING(CONFIG_S3C2410_WATCHDOG_ATBOOT)); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); ...
int timeout = 10;//超时时间为10s wdt_fd = open(WDT,O_WRONLY); if(wdt_fd == -1) { printf("---Fail to open "WDT"!\n"); } ioctl(wdt_fd,WDIOC_SETTIMEOUT,&timeout); ioctl(wdt_fd,WDIOC_GETTIMEOUT,&timeout); while(1) ...