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mimxrt: Move calc_weekday helper function to timeutils.

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This function may be useful for other ports as well so lets move it to
timeutils so it can be reused.

Signed-off-by: Krzysztof Adamski <k@japko.eu>
This commit is contained in:
Krzysztof Adamski 2021-06-20 11:36:55 +02:00 committed by Damien George
parent b51ae20c07
commit 6409bbcb72
4 changed files with 12 additions and 11 deletions
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7
lib/timeutils/timeutils.c
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@ -213,3 +213,10 @@ mp_uint_t timeutils_mktime_2000(mp_uint_t year, mp_int_t month, mp_int_t mday,
}
return timeutils_seconds_since_2000(year, month, mday, hours, minutes, seconds);
}
// Calculate the weekday from the date.
// The result is zero based with 0 = Monday.
// by Michael Keith and Tom Craver, 1990.
int timeutils_calc_weekday(int y, int m, int d) {
return ((d += m < 3 ? y-- : y - 2, 23 * m / 9 + d + 4 + y / 4 - y / 100 + y / 400) + 6) % 7;
}

2
lib/timeutils/timeutils.h
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@ -100,4 +100,6 @@ static inline int64_t timeutils_nanoseconds_since_epoch_to_nanoseconds_since_197
#endif
int timeutils_calc_weekday(int y, int m, int d);
#endif // MICROPY_INCLUDED_LIB_TIMEUTILS_TIMEUTILS_H

10
ports/mimxrt/machine_rtc.c
View File

@ -26,6 +26,7 @@
*/
#include "py/runtime.h"
#include "lib/timeutils/timeutils.h"
#include "modmachine.h"
#include "ticks.h"
#include "fsl_snvs_lp.h"
@ -39,13 +40,6 @@ typedef struct _machine_rtc_obj_t {
STATIC const machine_rtc_obj_t machine_rtc_obj = {{&machine_rtc_type}};
uint32_t us_offset = 0;
// Calculate the weekday from the date.
// The result is zero based with 0 = Monday.
// by Michael Keith and Tom Craver, 1990.
int calc_weekday(int y, int m, int d) {
return ((d += m < 3 ? y-- : y - 2, 23 * m / 9 + d + 4 + y / 4 - y / 100 + y / 400) + 6) % 7;
}
STATIC mp_obj_t machine_rtc_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
// Check arguments.
mp_arg_check_num(n_args, n_kw, 0, 0, false);
@ -67,7 +61,7 @@ STATIC mp_obj_t machine_rtc_datetime_helper(size_t n_args, const mp_obj_t *args)
mp_obj_new_int(srtc_date.year),
mp_obj_new_int(srtc_date.month),
mp_obj_new_int(srtc_date.day),
mp_obj_new_int(calc_weekday(srtc_date.year, srtc_date.month, srtc_date.day)),
mp_obj_new_int(timeutils_calc_weekday(srtc_date.year, srtc_date.month, srtc_date.day)),
mp_obj_new_int(srtc_date.hour),
mp_obj_new_int(srtc_date.minute),
mp_obj_new_int(srtc_date.second),

4
ports/mimxrt/modutime.c
View File

@ -30,8 +30,6 @@
#include "extmod/utime_mphal.h"
#include "fsl_snvs_lp.h"
extern int calc_weekday(int y, int m, int d);
// localtime([secs])
// Convert a time expressed in seconds since the Epoch into an 8-tuple which
// contains: (year, month, mday, hour, minute, second, weekday, yearday)
@ -48,7 +46,7 @@ STATIC mp_obj_t time_localtime(size_t n_args, const mp_obj_t *args) {
mp_obj_new_int(t.hour),
mp_obj_new_int(t.minute),
mp_obj_new_int(t.second),
mp_obj_new_int(calc_weekday(t.year, t.month, t.day)),
mp_obj_new_int(timeutils_calc_weekday(t.year, t.month, t.day)),
mp_obj_new_int(timeutils_year_day(t.year, t.month, t.day)),
};
return mp_obj_new_tuple(8, tuple);