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1 : : /*
2 : : * This file is part of the MicroPython project, http://micropython.org/
3 : : *
4 : : * The MIT License (MIT)
5 : : *
6 : : * Copyright (c) 2013-2023 Damien P. George
7 : : * Copyright (c) 2016 Paul Sokolovsky
8 : : *
9 : : * Permission is hereby granted, free of charge, to any person obtaining a copy
10 : : * of this software and associated documentation files (the "Software"), to deal
11 : : * in the Software without restriction, including without limitation the rights
12 : : * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 : : * copies of the Software, and to permit persons to whom the Software is
14 : : * furnished to do so, subject to the following conditions:
15 : : *
16 : : * The above copyright notice and this permission notice shall be included in
17 : : * all copies or substantial portions of the Software.
18 : : *
19 : : * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 : : * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 : : * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 : : * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 : : * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 : : * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 : : * THE SOFTWARE.
26 : : */
27 : :
28 : : #include "py/mphal.h"
29 : : #include "py/runtime.h"
30 : : #include "py/smallint.h"
31 : : #include "extmod/modtime.h"
32 : :
33 : : #if MICROPY_PY_TIME
34 : :
35 : : #ifdef MICROPY_PY_TIME_INCLUDEFILE
36 : : #include MICROPY_PY_TIME_INCLUDEFILE
37 : : #endif
38 : :
39 : : #if MICROPY_PY_TIME_GMTIME_LOCALTIME_MKTIME
40 : :
41 : : #include "shared/timeutils/timeutils.h"
42 : :
43 : : // localtime([secs])
44 : : // Convert a time expressed in seconds since the Epoch into an 8-tuple which
45 : : // contains: (year, month, mday, hour, minute, second, weekday, yearday)
46 : : // If secs is not provided or None, then the current time is used.
47 : : // - year is the full year, eg 2000
48 : : // - month is 1-12
49 : : // - mday is 1-31
50 : : // - hour is 0-23
51 : : // - minute is 0-59
52 : : // - second is 0-59
53 : : // - weekday is 0-6 for Mon-Sun
54 : : // - yearday is 1-366
55 : : static mp_obj_t time_localtime(size_t n_args, const mp_obj_t *args) {
56 : : if (n_args == 0 || args[0] == mp_const_none) {
57 : : // Get current date and time.
58 : : return mp_time_localtime_get();
59 : : } else {
60 : : // Convert given seconds to tuple.
61 : : mp_int_t seconds = mp_obj_get_int(args[0]);
62 : : timeutils_struct_time_t tm;
63 : : timeutils_seconds_since_epoch_to_struct_time(seconds, &tm);
64 : : mp_obj_t tuple[8] = {
65 : : tuple[0] = mp_obj_new_int(tm.tm_year),
66 : : tuple[1] = mp_obj_new_int(tm.tm_mon),
67 : : tuple[2] = mp_obj_new_int(tm.tm_mday),
68 : : tuple[3] = mp_obj_new_int(tm.tm_hour),
69 : : tuple[4] = mp_obj_new_int(tm.tm_min),
70 : : tuple[5] = mp_obj_new_int(tm.tm_sec),
71 : : tuple[6] = mp_obj_new_int(tm.tm_wday),
72 : : tuple[7] = mp_obj_new_int(tm.tm_yday),
73 : : };
74 : : return mp_obj_new_tuple(8, tuple);
75 : : }
76 : : }
77 : : MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_time_localtime_obj, 0, 1, time_localtime);
78 : :
79 : : // mktime()
80 : : // This is the inverse function of localtime. Its argument is a full 8-tuple
81 : : // which expresses a time as per localtime. It returns an integer which is
82 : : // the number of seconds since the Epoch (eg 1st Jan 1970, or 1st Jan 2000).
83 : : static mp_obj_t time_mktime(mp_obj_t tuple) {
84 : : size_t len;
85 : : mp_obj_t *elem;
86 : : mp_obj_get_array(tuple, &len, &elem);
87 : :
88 : : // localtime generates a tuple of len 8. CPython uses 9, so we accept both.
89 : : if (len < 8 || len > 9) {
90 : : mp_raise_TypeError(MP_ERROR_TEXT("mktime needs a tuple of length 8 or 9"));
91 : : }
92 : :
93 : : return mp_obj_new_int_from_uint(timeutils_mktime(mp_obj_get_int(elem[0]),
94 : : mp_obj_get_int(elem[1]), mp_obj_get_int(elem[2]), mp_obj_get_int(elem[3]),
95 : : mp_obj_get_int(elem[4]), mp_obj_get_int(elem[5])));
96 : : }
97 : : MP_DEFINE_CONST_FUN_OBJ_1(mp_time_mktime_obj, time_mktime);
98 : :
99 : : #endif // MICROPY_PY_TIME_GMTIME_LOCALTIME_MKTIME
100 : :
101 : : #if MICROPY_PY_TIME_TIME_TIME_NS
102 : :
103 : : // time()
104 : : // Return the number of seconds since the Epoch.
105 : 154 : static mp_obj_t time_time(void) {
106 : 154 : return mp_time_time_get();
107 : : }
108 : : static MP_DEFINE_CONST_FUN_OBJ_0(mp_time_time_obj, time_time);
109 : :
110 : : // time_ns()
111 : : // Returns the number of nanoseconds since the Epoch, as an integer.
112 : 12 : static mp_obj_t time_time_ns(void) {
113 : 12 : return mp_obj_new_int_from_ull(mp_hal_time_ns());
114 : : }
115 : : MP_DEFINE_CONST_FUN_OBJ_0(mp_time_time_ns_obj, time_time_ns);
116 : :
117 : : #endif // MICROPY_PY_TIME_TIME_TIME_NS
118 : :
119 : 7809 : static mp_obj_t time_sleep(mp_obj_t seconds_o) {
120 : : #ifdef MICROPY_PY_TIME_CUSTOM_SLEEP
121 : 7809 : mp_time_sleep(seconds_o);
122 : : #else
123 : : #if MICROPY_PY_BUILTINS_FLOAT
124 : : mp_hal_delay_ms((mp_uint_t)(1000 * mp_obj_get_float(seconds_o)));
125 : : #else
126 : : mp_hal_delay_ms(1000 * mp_obj_get_int(seconds_o));
127 : : #endif
128 : : #endif
129 : 7809 : return mp_const_none;
130 : : }
131 : : MP_DEFINE_CONST_FUN_OBJ_1(mp_time_sleep_obj, time_sleep);
132 : :
133 : 66 : static mp_obj_t time_sleep_ms(mp_obj_t arg) {
134 : 66 : mp_int_t ms = mp_obj_get_int(arg);
135 [ + - ]: 66 : if (ms >= 0) {
136 : 66 : mp_hal_delay_ms(ms);
137 : : }
138 : 66 : return mp_const_none;
139 : : }
140 : : MP_DEFINE_CONST_FUN_OBJ_1(mp_time_sleep_ms_obj, time_sleep_ms);
141 : :
142 : 4 : static mp_obj_t time_sleep_us(mp_obj_t arg) {
143 : 4 : mp_int_t us = mp_obj_get_int(arg);
144 [ + - ]: 4 : if (us > 0) {
145 : 4 : mp_hal_delay_us(us);
146 : : }
147 : 4 : return mp_const_none;
148 : : }
149 : : MP_DEFINE_CONST_FUN_OBJ_1(mp_time_sleep_us_obj, time_sleep_us);
150 : :
151 : 231882 : static mp_obj_t time_ticks_ms(void) {
152 : 231882 : return MP_OBJ_NEW_SMALL_INT(mp_hal_ticks_ms() & (MICROPY_PY_TIME_TICKS_PERIOD - 1));
153 : : }
154 : : MP_DEFINE_CONST_FUN_OBJ_0(mp_time_ticks_ms_obj, time_ticks_ms);
155 : :
156 : 54 : static mp_obj_t time_ticks_us(void) {
157 : 54 : return MP_OBJ_NEW_SMALL_INT(mp_hal_ticks_us() & (MICROPY_PY_TIME_TICKS_PERIOD - 1));
158 : : }
159 : : MP_DEFINE_CONST_FUN_OBJ_0(mp_time_ticks_us_obj, time_ticks_us);
160 : :
161 : 54 : static mp_obj_t time_ticks_cpu(void) {
162 : 54 : return MP_OBJ_NEW_SMALL_INT(mp_hal_ticks_cpu() & (MICROPY_PY_TIME_TICKS_PERIOD - 1));
163 : : }
164 : : MP_DEFINE_CONST_FUN_OBJ_0(mp_time_ticks_cpu_obj, time_ticks_cpu);
165 : :
166 : 118645 : static mp_obj_t time_ticks_diff(mp_obj_t end_in, mp_obj_t start_in) {
167 : : // we assume that the arguments come from ticks_xx so are small ints
168 : 118645 : mp_uint_t start = MP_OBJ_SMALL_INT_VALUE(start_in);
169 : 118645 : mp_uint_t end = MP_OBJ_SMALL_INT_VALUE(end_in);
170 : : // Optimized formula avoiding if conditions. We adjust difference "forward",
171 : : // wrap it around and adjust back.
172 : 118645 : mp_int_t diff = ((end - start + MICROPY_PY_TIME_TICKS_PERIOD / 2) & (MICROPY_PY_TIME_TICKS_PERIOD - 1))
173 : 118645 : - MICROPY_PY_TIME_TICKS_PERIOD / 2;
174 : 118645 : return MP_OBJ_NEW_SMALL_INT(diff);
175 : : }
176 : : MP_DEFINE_CONST_FUN_OBJ_2(mp_time_ticks_diff_obj, time_ticks_diff);
177 : :
178 : 113328 : static mp_obj_t time_ticks_add(mp_obj_t ticks_in, mp_obj_t delta_in) {
179 : : // we assume that first argument come from ticks_xx so is small int
180 : 113328 : mp_uint_t ticks = MP_OBJ_SMALL_INT_VALUE(ticks_in);
181 : 113328 : mp_uint_t delta = mp_obj_get_int(delta_in);
182 : :
183 : : // Check that delta does not overflow the range that ticks_diff can handle.
184 : : // This ensures the following:
185 : : // - ticks_diff(ticks_add(T, delta), T) == delta
186 : : // - ticks_diff(T, ticks_add(T, delta)) == -delta
187 : : // The latter requires excluding delta=-TICKS_PERIOD/2.
188 : : //
189 : : // This unsigned comparison is equivalent to a signed comparison of:
190 : : // delta <= -TICKS_PERIOD/2 || delta >= TICKS_PERIOD/2
191 [ + + ]: 113328 : if (delta + MICROPY_PY_TIME_TICKS_PERIOD / 2 - 1 >= MICROPY_PY_TIME_TICKS_PERIOD - 1) {
192 : 25 : mp_raise_msg(&mp_type_OverflowError, MP_ERROR_TEXT("ticks interval overflow"));
193 : : }
194 : :
195 : 113303 : return MP_OBJ_NEW_SMALL_INT((ticks + delta) & (MICROPY_PY_TIME_TICKS_PERIOD - 1));
196 : : }
197 : : MP_DEFINE_CONST_FUN_OBJ_2(mp_time_ticks_add_obj, time_ticks_add);
198 : :
199 : : static const mp_rom_map_elem_t mp_module_time_globals_table[] = {
200 : : { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_time) },
201 : :
202 : : #if MICROPY_PY_TIME_GMTIME_LOCALTIME_MKTIME
203 : : { MP_ROM_QSTR(MP_QSTR_gmtime), MP_ROM_PTR(&mp_time_localtime_obj) },
204 : : { MP_ROM_QSTR(MP_QSTR_localtime), MP_ROM_PTR(&mp_time_localtime_obj) },
205 : : { MP_ROM_QSTR(MP_QSTR_mktime), MP_ROM_PTR(&mp_time_mktime_obj) },
206 : : #endif
207 : :
208 : : #if MICROPY_PY_TIME_TIME_TIME_NS
209 : : { MP_ROM_QSTR(MP_QSTR_time), MP_ROM_PTR(&mp_time_time_obj) },
210 : : { MP_ROM_QSTR(MP_QSTR_time_ns), MP_ROM_PTR(&mp_time_time_ns_obj) },
211 : : #endif
212 : :
213 : : { MP_ROM_QSTR(MP_QSTR_sleep), MP_ROM_PTR(&mp_time_sleep_obj) },
214 : : { MP_ROM_QSTR(MP_QSTR_sleep_ms), MP_ROM_PTR(&mp_time_sleep_ms_obj) },
215 : : { MP_ROM_QSTR(MP_QSTR_sleep_us), MP_ROM_PTR(&mp_time_sleep_us_obj) },
216 : :
217 : : { MP_ROM_QSTR(MP_QSTR_ticks_ms), MP_ROM_PTR(&mp_time_ticks_ms_obj) },
218 : : { MP_ROM_QSTR(MP_QSTR_ticks_us), MP_ROM_PTR(&mp_time_ticks_us_obj) },
219 : : { MP_ROM_QSTR(MP_QSTR_ticks_cpu), MP_ROM_PTR(&mp_time_ticks_cpu_obj) },
220 : : { MP_ROM_QSTR(MP_QSTR_ticks_add), MP_ROM_PTR(&mp_time_ticks_add_obj) },
221 : : { MP_ROM_QSTR(MP_QSTR_ticks_diff), MP_ROM_PTR(&mp_time_ticks_diff_obj) },
222 : :
223 : : #ifdef MICROPY_PY_TIME_EXTRA_GLOBALS
224 : : MICROPY_PY_TIME_EXTRA_GLOBALS
225 : : #endif
226 : : };
227 : : static MP_DEFINE_CONST_DICT(mp_module_time_globals, mp_module_time_globals_table);
228 : :
229 : : const mp_obj_module_t mp_module_time = {
230 : : .base = { &mp_type_module },
231 : : .globals = (mp_obj_dict_t *)&mp_module_time_globals,
232 : : };
233 : :
234 : : MP_REGISTER_EXTENSIBLE_MODULE(MP_QSTR_time, mp_module_time);
235 : :
236 : : #endif // MICROPY_PY_TIME
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