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110 lines
3.8 KiB
C
110 lines
3.8 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) 2024-2025 OpenMV LLC.
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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 "py/mphal.h"
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#include "py/mperrno.h"
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#include "extmod/modmachine.h"
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#include "rtc.h"
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#include "sys_ctrl_rtc.h"
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typedef struct _machine_rtc_obj_t {
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mp_obj_base_t base;
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LPRTC_Type *rtc;
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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 = {{&machine_rtc_type}, (LPRTC_Type *)LPRTC_BASE};
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void LPRTC_IRQHandler(void) {
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lprtc_interrupt_ack(machine_rtc.rtc);
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lprtc_interrupt_disable(machine_rtc.rtc);
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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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const machine_rtc_obj_t *self = &machine_rtc;
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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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enable_lprtc_clk();
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lprtc_prescaler_disable(self->rtc);
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lprtc_counter_wrap_disable(self->rtc);
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lprtc_interrupt_disable(self->rtc);
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lprtc_interrupt_unmask(self->rtc);
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NVIC_SetPriority(LPRTC_IRQ_IRQn, IRQ_PRI_RTC);
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NVIC_ClearPendingIRQ(LPRTC_IRQ_IRQn);
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NVIC_EnableIRQ(LPRTC_IRQ_IRQn);
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return MP_OBJ_FROM_PTR(self);
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}
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static mp_obj_t machine_rtc_alarm(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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enum { ARG_id, ARG_time, ARG_repeat };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_id, MP_ARG_INT, {.u_int = 0} },
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{ MP_QSTR_time, MP_ARG_OBJ, {.u_obj = mp_const_none} },
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{ MP_QSTR_repeat, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = false} },
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};
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machine_rtc_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
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// Parse args.
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(args), allowed_args, args);
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if (mp_obj_is_int(args[ARG_time].u_obj)) {
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uint32_t seconds = mp_obj_get_int(args[1].u_obj) / 1000;
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lprtc_counter_disable(self->rtc);
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lprtc_load_count(self->rtc, 1);
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lprtc_load_counter_match_register(self->rtc, seconds * 32768);
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lprtc_interrupt_ack(self->rtc);
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lprtc_interrupt_enable(self->rtc);
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lprtc_counter_enable(self->rtc);
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} else {
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mp_raise_ValueError(MP_ERROR_TEXT("invalid argument(s)"));
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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_KW(machine_rtc_alarm_obj, 1, machine_rtc_alarm);
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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_alarm), MP_ROM_PTR(&machine_rtc_alarm_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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