176 lines
6.4 KiB
C
176 lines
6.4 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2021 Damien P. George
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* Copyright (c) 2021 "Robert Hammelrath" <robert@hammelrath.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/runtime.h"
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#include "shared/timeutils/timeutils.h"
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#include "modmachine.h"
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#include "ticks.h"
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#include "fsl_snvs_lp.h"
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typedef struct _machine_rtc_obj_t {
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mp_obj_base_t base;
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mp_obj_t callback;
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} machine_rtc_obj_t;
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// Singleton RTC object.
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STATIC const machine_rtc_obj_t machine_rtc_obj = {{&machine_rtc_type}};
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uint32_t us_offset = 0;
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// Start the RTC Timer.
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void machine_rtc_start(void) {
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SNVS_LP_SRTC_StartTimer(SNVS);
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// If the date is not set, set it to a more recent start date,
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// MicroPython's first commit.
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snvs_lp_srtc_datetime_t srtc_date;
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SNVS_LP_SRTC_GetDatetime(SNVS, &srtc_date);
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if (srtc_date.year <= 1970) {
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srtc_date = (snvs_lp_srtc_datetime_t) {
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.year = 2013,
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.month = 10,
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.day = 14,
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.hour = 19,
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.minute = 53,
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.second = 11,
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};
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SNVS_LP_SRTC_SetDatetime(SNVS, &srtc_date);
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}
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}
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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) {
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// Check arguments.
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mp_arg_check_num(n_args, n_kw, 0, 0, false);
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// Return constant object.
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return (mp_obj_t)&machine_rtc_obj;
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}
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STATIC mp_obj_t machine_rtc_datetime_helper(size_t n_args, const mp_obj_t *args) {
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if (n_args == 1) {
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// Get date and time.
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snvs_lp_srtc_datetime_t srtc_date;
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SNVS_LP_SRTC_GetDatetime(SNVS, &srtc_date);
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mp_obj_t tuple[8] = {
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mp_obj_new_int(srtc_date.year),
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mp_obj_new_int(srtc_date.month),
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mp_obj_new_int(srtc_date.day),
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mp_obj_new_int(timeutils_calc_weekday(srtc_date.year, srtc_date.month, srtc_date.day)),
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mp_obj_new_int(srtc_date.hour),
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mp_obj_new_int(srtc_date.minute),
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mp_obj_new_int(srtc_date.second),
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mp_obj_new_int((ticks_us64() + us_offset) % 1000000),
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};
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return mp_obj_new_tuple(8, tuple);
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} else {
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// Set date and time.
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mp_obj_t *items;
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mp_int_t year;
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mp_obj_get_array_fixed_n(args[1], 8, &items);
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snvs_lp_srtc_datetime_t srtc_date;
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year = mp_obj_get_int(items[0]);
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srtc_date.year = year >= 100 ? year : year + 2000; // allow 21 for 2021
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srtc_date.month = mp_obj_get_int(items[1]);
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srtc_date.day = mp_obj_get_int(items[2]);
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// Ignore weekday at items[3]
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srtc_date.hour = mp_obj_get_int(items[4]);
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srtc_date.minute = mp_obj_get_int(items[5]);
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srtc_date.second = mp_obj_get_int(items[6]);
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if (SNVS_LP_SRTC_SetDatetime(SNVS, &srtc_date) != kStatus_Success) {
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mp_raise_ValueError(NULL);
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}
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us_offset = (1000000 + mp_obj_get_int(items[7]) - ticks_us64() % 1000000) % 1000000;
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return mp_const_none;
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}
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}
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STATIC mp_obj_t machine_rtc_datetime(mp_uint_t n_args, const mp_obj_t *args) {
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return machine_rtc_datetime_helper(n_args, args);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_rtc_datetime_obj, 1, 2, machine_rtc_datetime);
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STATIC mp_obj_t machine_rtc_now(mp_obj_t self_in) {
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// Get date and time in CPython order.
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snvs_lp_srtc_datetime_t srtc_date;
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SNVS_LP_SRTC_GetDatetime(SNVS, &srtc_date);
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mp_obj_t tuple[8] = {
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mp_obj_new_int(srtc_date.year),
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mp_obj_new_int(srtc_date.month),
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mp_obj_new_int(srtc_date.day),
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mp_obj_new_int(srtc_date.hour),
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mp_obj_new_int(srtc_date.minute),
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mp_obj_new_int(srtc_date.second),
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mp_obj_new_int((ticks_us64() + us_offset) % 1000000),
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mp_const_none,
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};
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return mp_obj_new_tuple(8, tuple);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_rtc_now_obj, machine_rtc_now);
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STATIC mp_obj_t machine_rtc_init(mp_obj_t self_in, mp_obj_t date) {
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mp_obj_t args[2] = {self_in, date};
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machine_rtc_datetime_helper(2, args);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_2(machine_rtc_init_obj, machine_rtc_init);
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// calibration(cal)
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// When the argument is a number in the range [-16 to 15], set the calibration value.
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STATIC mp_obj_t machine_rtc_calibration(mp_obj_t self_in, mp_obj_t cal_in) {
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mp_int_t cal = 0;
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snvs_lp_srtc_config_t snvsSrtcConfig;
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cal = mp_obj_get_int(cal_in);
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if (cal < -16 || cal > 15) {
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mp_raise_ValueError(MP_ERROR_TEXT("value out of range -16 to 15"));
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} else {
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snvsSrtcConfig.srtcCalEnable = true;
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snvsSrtcConfig.srtcCalValue = cal & 0x1f; // 5 bit 2's complement
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SNVS_LP_SRTC_Init(SNVS, &snvsSrtcConfig);
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}
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_2(machine_rtc_calibration_obj, machine_rtc_calibration);
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STATIC const mp_rom_map_elem_t machine_rtc_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_init), MP_ROM_PTR(&machine_rtc_init_obj) },
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{ MP_ROM_QSTR(MP_QSTR_datetime), MP_ROM_PTR(&machine_rtc_datetime_obj) },
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{ MP_ROM_QSTR(MP_QSTR_now), MP_ROM_PTR(&machine_rtc_now_obj) },
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{ MP_ROM_QSTR(MP_QSTR_calibration), MP_ROM_PTR(&machine_rtc_calibration_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(machine_rtc_locals_dict, machine_rtc_locals_dict_table);
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MP_DEFINE_CONST_OBJ_TYPE(
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machine_rtc_type,
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MP_QSTR_RTC,
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MP_TYPE_FLAG_NONE,
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make_new, machine_rtc_make_new,
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locals_dict, &machine_rtc_locals_dict
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);
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