circuitpython/extmod/modtime.c

237 lines
8.9 KiB
C

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013-2023 Damien P. George
* Copyright (c) 2016 Paul Sokolovsky
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "py/mphal.h"
#include "py/runtime.h"
#include "py/smallint.h"
#include "extmod/modtime.h"
#if MICROPY_PY_TIME
#ifdef MICROPY_PY_TIME_INCLUDEFILE
#include MICROPY_PY_TIME_INCLUDEFILE
#endif
#if MICROPY_PY_TIME_GMTIME_LOCALTIME_MKTIME
#include "shared/timeutils/timeutils.h"
// 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)
// If secs is not provided or None, then the current time is used.
// - year is the full year, eg 2000
// - month is 1-12
// - mday is 1-31
// - hour is 0-23
// - minute is 0-59
// - second is 0-59
// - weekday is 0-6 for Mon-Sun
// - yearday is 1-366
STATIC mp_obj_t time_localtime(size_t n_args, const mp_obj_t *args) {
if (n_args == 0 || args[0] == mp_const_none) {
// Get current date and time.
return mp_time_localtime_get();
} else {
// Convert given seconds to tuple.
mp_int_t seconds = mp_obj_get_int(args[0]);
timeutils_struct_time_t tm;
timeutils_seconds_since_epoch_to_struct_time(seconds, &tm);
mp_obj_t tuple[8] = {
tuple[0] = mp_obj_new_int(tm.tm_year),
tuple[1] = mp_obj_new_int(tm.tm_mon),
tuple[2] = mp_obj_new_int(tm.tm_mday),
tuple[3] = mp_obj_new_int(tm.tm_hour),
tuple[4] = mp_obj_new_int(tm.tm_min),
tuple[5] = mp_obj_new_int(tm.tm_sec),
tuple[6] = mp_obj_new_int(tm.tm_wday),
tuple[7] = mp_obj_new_int(tm.tm_yday),
};
return mp_obj_new_tuple(8, tuple);
}
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_time_localtime_obj, 0, 1, time_localtime);
// mktime()
// This is the inverse function of localtime. Its argument is a full 8-tuple
// which expresses a time as per localtime. It returns an integer which is
// the number of seconds since the Epoch (eg 1st Jan 1970, or 1st Jan 2000).
STATIC mp_obj_t time_mktime(mp_obj_t tuple) {
size_t len;
mp_obj_t *elem;
mp_obj_get_array(tuple, &len, &elem);
// localtime generates a tuple of len 8. CPython uses 9, so we accept both.
if (len < 8 || len > 9) {
mp_raise_TypeError(MP_ERROR_TEXT("mktime needs a tuple of length 8 or 9"));
}
return mp_obj_new_int_from_uint(timeutils_mktime(mp_obj_get_int(elem[0]),
mp_obj_get_int(elem[1]), mp_obj_get_int(elem[2]), mp_obj_get_int(elem[3]),
mp_obj_get_int(elem[4]), mp_obj_get_int(elem[5])));
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_time_mktime_obj, time_mktime);
#endif // MICROPY_PY_TIME_GMTIME_LOCALTIME_MKTIME
#if MICROPY_PY_TIME_TIME_TIME_NS
// time()
// Return the number of seconds since the Epoch.
STATIC mp_obj_t time_time(void) {
return mp_time_time_get();
}
STATIC MP_DEFINE_CONST_FUN_OBJ_0(mp_time_time_obj, time_time);
// time_ns()
// Returns the number of nanoseconds since the Epoch, as an integer.
STATIC mp_obj_t time_time_ns(void) {
return mp_obj_new_int_from_ull(mp_hal_time_ns());
}
MP_DEFINE_CONST_FUN_OBJ_0(mp_time_time_ns_obj, time_time_ns);
#endif // MICROPY_PY_TIME_TIME_TIME_NS
STATIC mp_obj_t time_sleep(mp_obj_t seconds_o) {
#ifdef MICROPY_PY_TIME_CUSTOM_SLEEP
mp_time_sleep(seconds_o);
#else
#if MICROPY_PY_BUILTINS_FLOAT
mp_hal_delay_ms((mp_uint_t)(1000 * mp_obj_get_float(seconds_o)));
#else
mp_hal_delay_ms(1000 * mp_obj_get_int(seconds_o));
#endif
#endif
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_time_sleep_obj, time_sleep);
STATIC mp_obj_t time_sleep_ms(mp_obj_t arg) {
mp_int_t ms = mp_obj_get_int(arg);
if (ms >= 0) {
mp_hal_delay_ms(ms);
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_time_sleep_ms_obj, time_sleep_ms);
STATIC mp_obj_t time_sleep_us(mp_obj_t arg) {
mp_int_t us = mp_obj_get_int(arg);
if (us > 0) {
mp_hal_delay_us(us);
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_time_sleep_us_obj, time_sleep_us);
STATIC mp_obj_t time_ticks_ms(void) {
return MP_OBJ_NEW_SMALL_INT(mp_hal_ticks_ms() & (MICROPY_PY_TIME_TICKS_PERIOD - 1));
}
MP_DEFINE_CONST_FUN_OBJ_0(mp_time_ticks_ms_obj, time_ticks_ms);
STATIC mp_obj_t time_ticks_us(void) {
return MP_OBJ_NEW_SMALL_INT(mp_hal_ticks_us() & (MICROPY_PY_TIME_TICKS_PERIOD - 1));
}
MP_DEFINE_CONST_FUN_OBJ_0(mp_time_ticks_us_obj, time_ticks_us);
STATIC mp_obj_t time_ticks_cpu(void) {
return MP_OBJ_NEW_SMALL_INT(mp_hal_ticks_cpu() & (MICROPY_PY_TIME_TICKS_PERIOD - 1));
}
MP_DEFINE_CONST_FUN_OBJ_0(mp_time_ticks_cpu_obj, time_ticks_cpu);
STATIC mp_obj_t time_ticks_diff(mp_obj_t end_in, mp_obj_t start_in) {
// we assume that the arguments come from ticks_xx so are small ints
mp_uint_t start = MP_OBJ_SMALL_INT_VALUE(start_in);
mp_uint_t end = MP_OBJ_SMALL_INT_VALUE(end_in);
// Optimized formula avoiding if conditions. We adjust difference "forward",
// wrap it around and adjust back.
mp_int_t diff = ((end - start + MICROPY_PY_TIME_TICKS_PERIOD / 2) & (MICROPY_PY_TIME_TICKS_PERIOD - 1))
- MICROPY_PY_TIME_TICKS_PERIOD / 2;
return MP_OBJ_NEW_SMALL_INT(diff);
}
MP_DEFINE_CONST_FUN_OBJ_2(mp_time_ticks_diff_obj, time_ticks_diff);
STATIC mp_obj_t time_ticks_add(mp_obj_t ticks_in, mp_obj_t delta_in) {
// we assume that first argument come from ticks_xx so is small int
mp_uint_t ticks = MP_OBJ_SMALL_INT_VALUE(ticks_in);
mp_uint_t delta = mp_obj_get_int(delta_in);
// Check that delta does not overflow the range that ticks_diff can handle.
// This ensures the following:
// - ticks_diff(ticks_add(T, delta), T) == delta
// - ticks_diff(T, ticks_add(T, delta)) == -delta
// The latter requires excluding delta=-TICKS_PERIOD/2.
//
// This unsigned comparison is equivalent to a signed comparison of:
// delta <= -TICKS_PERIOD/2 || delta >= TICKS_PERIOD/2
if (delta + MICROPY_PY_TIME_TICKS_PERIOD / 2 - 1 >= MICROPY_PY_TIME_TICKS_PERIOD - 1) {
mp_raise_msg(&mp_type_OverflowError, MP_ERROR_TEXT("ticks interval overflow"));
}
return MP_OBJ_NEW_SMALL_INT((ticks + delta) & (MICROPY_PY_TIME_TICKS_PERIOD - 1));
}
MP_DEFINE_CONST_FUN_OBJ_2(mp_time_ticks_add_obj, time_ticks_add);
STATIC const mp_rom_map_elem_t mp_module_time_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_time) },
#if MICROPY_PY_TIME_GMTIME_LOCALTIME_MKTIME
{ MP_ROM_QSTR(MP_QSTR_gmtime), MP_ROM_PTR(&mp_time_localtime_obj) },
{ MP_ROM_QSTR(MP_QSTR_localtime), MP_ROM_PTR(&mp_time_localtime_obj) },
{ MP_ROM_QSTR(MP_QSTR_mktime), MP_ROM_PTR(&mp_time_mktime_obj) },
#endif
#if MICROPY_PY_TIME_TIME_TIME_NS
{ MP_ROM_QSTR(MP_QSTR_time), MP_ROM_PTR(&mp_time_time_obj) },
{ MP_ROM_QSTR(MP_QSTR_time_ns), MP_ROM_PTR(&mp_time_time_ns_obj) },
#endif
{ MP_ROM_QSTR(MP_QSTR_sleep), MP_ROM_PTR(&mp_time_sleep_obj) },
{ MP_ROM_QSTR(MP_QSTR_sleep_ms), MP_ROM_PTR(&mp_time_sleep_ms_obj) },
{ MP_ROM_QSTR(MP_QSTR_sleep_us), MP_ROM_PTR(&mp_time_sleep_us_obj) },
{ MP_ROM_QSTR(MP_QSTR_ticks_ms), MP_ROM_PTR(&mp_time_ticks_ms_obj) },
{ MP_ROM_QSTR(MP_QSTR_ticks_us), MP_ROM_PTR(&mp_time_ticks_us_obj) },
{ MP_ROM_QSTR(MP_QSTR_ticks_cpu), MP_ROM_PTR(&mp_time_ticks_cpu_obj) },
{ MP_ROM_QSTR(MP_QSTR_ticks_add), MP_ROM_PTR(&mp_time_ticks_add_obj) },
{ MP_ROM_QSTR(MP_QSTR_ticks_diff), MP_ROM_PTR(&mp_time_ticks_diff_obj) },
#ifdef MICROPY_PY_TIME_EXTRA_GLOBALS
MICROPY_PY_TIME_EXTRA_GLOBALS
#endif
};
STATIC MP_DEFINE_CONST_DICT(mp_module_time_globals, mp_module_time_globals_table);
const mp_obj_module_t mp_module_time = {
.base = { &mp_type_module },
.globals = (mp_obj_dict_t *)&mp_module_time_globals,
};
MP_REGISTER_EXTENSIBLE_MODULE(MP_QSTR_time, mp_module_time);
#endif // MICROPY_PY_TIME