more sdlog experiments
More work on sd logging exp
Functions to convert between psas timespec and RTCTime
more updates to psas_rtc after merge
More experiments with setting SSR in RTC
setting ssr again...
fixing coversions to a psas_timespec
More testing of rtc api
Cleaned up API. Added psas_get_unix_time
Progress on logging to sdcard, generic message header development
First commit of crc16 code in common util directory. Edited but untested.
Using pycrc to generate CRC code in common util directory
More work on sdlog_exp with crc16
stack size investigation for sdlog_ thread
More debugging-switch to different brand of microSD card
Reset fp to end of checksum after eod markers written
Interface for sd logging. See psas_sdlog.
Merge branch 'master' into sd
Change DEBUG statements
More sdlog experiments for reliability