@brief (Optional) Local log file name prefix. It should follow the regular expression pattern of [a-zA-Z0-9_\@-.]{1,128}.
The final file name will be the prefix followed by "_" and the file creation time, and "_rtclog.log" at the end. For example, logPrefix_2023-05-25_172324_rtclog.log.
@brief (Optional) The limits for total log file size in MB. The range is 1 to 100 MB, and the default value is 10 MB.
If logFileSize < 1, it will be set to 1 MB. If logFileSize > 100, it will be set to 100 MB.
The maximum size for a single log file is 2 MB.
If 1 ≤ logFileSize ≤ 2, one log file will be generated. If logFileSize > 2, the first ⌊logFileSize/2⌋ files will be filled with 2 MB each, the ⌊logFileSize/2⌋+1 fill will be filled with logFileSize mod 2.
If the size exceeds the remaining space, the oldest file will be deleted.