/* start the main program */voidmain(){unsignedcharsec,min,hour,day,month,year;/* Initialize the lcd before displaying any thing on the lcd */LCD_Init(8,2,16);/* Initialize the RTC(ds1307) before reading or writing time/date */RTC_Init();/*### Set the time and Date only once...
针对你提出的“hwclock: ioctl(rtc_rd_time) to /dev/rtc0 to read the time failed: invalid argument”错误信息,这里是一些可能的解决步骤和建议: 分析错误信息: 错误信息表明hwclock命令在尝试通过ioctl系统调用读取/dev/rtc0设备的时间时遇到了问题,具体错误是“invalid argument”(无效参数)。这通常意味着提...
Start a system with an attached RTC but the battery backing of the RTC runs out, so it starts without a valid time set. hwclockreports the following error instead $ sudo hwclock hwclock: RTC_RD_TIME: Invalid argument Additional program output to the terminal or log subsystem illustrating the ...
NET: Registered protocol family 17 s3c-rtc s3c2410-rtc: hctosys: invalid date/time 以上信息说明当前 RTC 时间invalid , RTC 初始时间为 Wed Dec 31 23:59:59 1969 ; 从内核函数 int rtc_valid_tm(struct rtc_time *tm) ,可以看出,当 year 小于 1970 时,认为是时间 invalid ,函数返回 -EINVAL ; dr...
hwclock: settimeofday() failed: Invalid argument [root@kevin /]# hwclock -w s3c2410-rtc s3c2410-rtc: rtc only supports 100 years hwclock: RTC_SET_TIME: Invalid argument 以上错误信息都是因为 year 设置不当引起的。没有设置 RTC , RTC 也不会启动计时。 下面首先设置正确的系统时间,然后将系统时间传...
The "hwclock: RTC_RD_TIME: Invalid argument" is due to driver is returning -EINVAL when low voltage is detected. You can try with below step: Read the control register 1 in pcf2127_rtc_set_time () function and set the STOP bit and write back the new value. static int pcf2127_rtc_...
7、调用 RTCRun() 后应立即调用 API RTCTimeSet() 来启动时钟,这样可以减少误差。 8、使用 RTCCalendarSet() 可以设置指定的日期信息。日期信息作为一个参数传递给此函数。此函数设置天、 月份和年份值。也有 Api 来单独设置这些值。 9、可以通过调用 RTCTimeGet() 和 RTCCalendarGet() 从有关寄存器分别读取...
Register 0x03 contains the REG_SECONDS_OS flag at bit 7. When it is set theInvalid argumenterror occurs,hwclock -rstops working while the timestamp provided by the IC is still ok. Contributor That's a comprehensive explanation of the problem. My summary would be: ...
hwclock: RTC_SET_TIME: Invalid argument 以上错误信息都是因为 year 设置不当引起的。没有设置 RTC , RTC 也不会启动计时。 下面首先设置正确的系统时间,然后将系统时间传递给 RTC 。 [root@kevin /]# date 040612282008.20 Sun Apr 6 12:28:20 UTC 2008 ...
when I use hwclock -r ,the error is hwclock: RTC_RD_TIME: Invalid argument I worry about the pins for spi1 in pinctrl_ecspi1: ecspi1grp are wrong, are you make sure the pins are correct? when I ckeck cat /proc/interrupts | grep spi I find the...