其中,set alarm是一个在Linux中设置rtc闹钟的函数。 在Linux系统中,设置rtc闹钟需要通过rtc设备节点进行操作。rtc设备节点一般位于/sys/class/rtc/rtc0/路径下。通过rtc设备节点,我们可以使用ioctl系统调用调用set alarm函数来设置rtc的闹钟。 set alarm函数的原型定义如下: int ioctl(int fd, RTC_ALM_SET, struct ...
我对下面main()中的行rtc_set_alarm(RTC_0, (RTC[RTC_0].rtc_ccvr + ALARM));有疑问。在rtc_set_alarm()的第二个参数中,我将RTC理解为指向地址0xB0000400的struct类型的指针。然后,它使用.rtc_ccvr访问结构的第一个成员。--- &#x 浏览2提问于2016-11-04得票数 1 1回答 android sys rtc唤醒警报...
1. 使用命令行设置RTC Alarm Linux系统通常提供了/sys/class/rtc/rtcX/wakealarm接口来设置RTC Alarm,其中rtcX是RTC设备的编号,如rtc0。以下是通过命令行设置RTC Alarm的步骤: 查看RTC设备编号: 通常RTC设备编号为rtc0,但可以通过ls /sys/class/rtc/来确认。 设置RTC Alarm: 使用echo命令将时间值写入/sys/clas...
int (*alarm_irq_enable)(struct device *, unsigned int enabled); }; 实现: static const struct rtc_class_ops test_rtc_ops = { .read_time = test_rtc_read_time, .set_time = test_rtc_set_time, .read_alarm = test_rtc_read_alarm, .set_alarm = test_rtc_set_alarm, .ioctl = test_...
s3c_rtc_tickno, s3c_rtc_alarmno); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); //获取资源 if (res == NULL) { dev_err(&pdev->dev, "failed to get memory region resource\n"); return -ENOENT; } s3c_rtc_mem = request_mem_region(res->start, ...
int (*set_alarm)(struct device *, struct rtc_wkalrm *); int (*proc)(struct device *, struct seq_file *); int (*set_mmss64)(struct device *, time64_t secs); int (*set_mmss)(struct device *, unsigned long secs); int (*read_callback)(struct device *, int data); ...
int (*alarm_irq_enable)(struct device *, unsigned int enabled); }; 实现: static const struct rtc_class_ops hym8563_rtc_ops = { .read_time = hym8563_rtc_read_time, .set_time = hym8563_rtc_set_time, .alarm_irq_enable = hym8563_rtc_alarm_irq_enable, ...
int(*set_alarm)(struct device *, struct rtc_wkalrm *); int(*proc)(struct device *, struct seq_file *); int(*set_mmss)(struct device *,unsignedlongsecs); int(*read_callback)(struct device *,intdata); int(*alarm_irq_enable)(struct device *,unsignedintenabled); ...
int (*read_time)(struct device *, struct rtc_time *); int (*set_time)(struct device *, struct rtc_time *); int (*read_alarm)(struct device *, struct rtc_wkalrm *); int (*set_alarm)(struct device *, struct rtc_wkalrm *); ...
1.1.2Linux内核RTC实时时钟配置查看与选择: 进入到内核根目录下,输入:make menuconfig进入到内核配置菜单: 根据选项进入到RTC实时驱动菜单: Device Drivers ---> [*] Real Time Clock ---> ││ [*] Set system time from RTC on startup and resume ││ ...