ioctl(RTC_RD_TIME) to /dev/rtc to read the time failed: Invalid argument
时间: 2024-05-25 22:18:46 浏览: 168
rtc_test.rar_linux rtc_rtc test
This error message indicates that there was an issue with the input arguments provided to the ioctl() system call when trying to read the time from the RTC (Real Time Clock) device file /dev/rtc.
This error message "Invalid argument" could be caused by a number of factors, including:
1. Incorrect usage of the ioctl() system call. Make sure that the arguments passed to the ioctl() function are valid and correctly formatted.
2. RTC driver not properly installed or configured. Make sure that the RTC driver is installed and properly configured on your system.
3. RTC device file not found or not accessible. Make sure that the RTC device file (/dev/rtc) is present in the system and has the proper permissions to be accessed.
4. Hardware failure. The RTC device itself may be faulty or malfunctioning, causing the ioctl() system call to fail.
To resolve this issue, you can try the following steps:
1. Verify that the RTC device is installed and properly configured on your system.
2. Make sure that the RTC device file (/dev/rtc) exists and has the proper permissions to be accessed.
3. Check that the input arguments to the ioctl() function are valid and correctly formatted.
4. If none of the above steps work, it may be necessary to replace the RTC device or seek assistance from a hardware specialist.
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