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CCSDS sscanf function adapted for atmel stdio.c (see comments)

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Robin Müller 2019-11-10 13:08:02 +01:00
parent b8af3b5e3d
commit 2b44e1c9c4
1 changed files with 26 additions and 17 deletions
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39
timemanager/CCSDSTime.cpp
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@ -154,32 +154,41 @@ ReturnValue_t CCSDSTime::convertFromASCII(Clock::TimeOfDay_t* to, const uint8_t*
if (length < 19) {
return RETURN_FAILED;
}
uint16_t year;
uint8_t month;
uint16_t day;
uint8_t hour;
uint8_t minute;
float second;
// In the size optimized nano library used by ATMEL, floating point conversion
// is not allowed. There is a linker flag to allow it apparently, but I
// could not manage to make it run (removing -specs=nano.specs in linker flags works though,
// but we propably should include this). Using floats with sscanf is also expensive.
// Furthermore, the stdio.c library by ATMEL can't resolve the %hhi specifiers
// Therefore, I adapted this function.
int year;
int month;
int day;
int hour;
int minute;
int second;
int usecond;
// try Code A (yyyy-mm-dd)
int count = sscanf((char *) from, "%4hi-%2hhi-%2hiT%2hhi:%2hhi:%fZ", &year,
&month, &day, &hour, &minute, &second);
if (count == 6) {
//int count = sscanf((char *) from, "%4hi-%2hi-%2hiT%2hi:%2hi:%fZ", &year,
// &month, &day, &hour, &minute, &second);
int count = sscanf((char *) from, "%4d-%2d-%2dT%2d:%2d:%2d.%dZ", &year,
&month, &day, &hour, &minute, &second, &usecond);
if (count == 7) {
to->year = year;
to->month = month;
to->day = day;
to->hour = hour;
to->minute = minute;
to->second = second;
to->usecond = (second - floor(second)) * 1000000;
to->usecond = usecond;//(second - floor(second)) * 1000000;
return RETURN_OK;
}
// try Code B (yyyy-ddd)
count = sscanf((char *) from, "%4hi-%3hiT%2hhi:%2hhi:%fZ", &year, &day,
&hour, &minute, &second);
if (count == 5) {
count = sscanf((char *) from, "%4i-%3iT%2i:%2i:%2i.%iZ", &year, &day,
&hour, &minute, &second, &usecond);
if (count == 6) {
uint8_t tempDay;
ReturnValue_t result = CCSDSTime::convertDaysOfYear(day, year, &month,
ReturnValue_t result = CCSDSTime::convertDaysOfYear((uint16_t)day,(uint16_t) year,(uint8_t *) &month,
&tempDay);
if (result != RETURN_OK) {
return RETURN_FAILED;
@ -190,7 +199,7 @@ ReturnValue_t CCSDSTime::convertFromASCII(Clock::TimeOfDay_t* to, const uint8_t*
to->hour = hour;
to->minute = minute;
to->second = second;
to->usecond = (second - floor(second)) * 1000000;
to->usecond = usecond;
return RETURN_OK;
}