2015-05-11 20:11:37 +01:00
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/*
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* This file is part of the Micro Python 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) 2015 Josef Gajdusek
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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 <stdio.h>
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#include <string.h>
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#include "py/nlr.h"
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#include "py/obj.h"
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#include "py/runtime.h"
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#include "timeutils.h"
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#include "user_interface.h"
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2015-06-22 23:03:17 +01:00
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#include "modpyb.h"
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2015-05-11 20:11:37 +01:00
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typedef struct _pyb_rtc_obj_t {
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mp_obj_base_t base;
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} pyb_rtc_obj_t;
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#define MEM_MAGIC 0x75507921
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#define MEM_DELTA_ADDR 64
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#define MEM_CAL_ADDR (MEM_DELTA_ADDR + 2)
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#define MEM_USER_MAGIC_ADDR (MEM_CAL_ADDR + 1)
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#define MEM_USER_LEN_ADDR (MEM_USER_MAGIC_ADDR + 1)
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#define MEM_USER_DATA_ADDR (MEM_USER_LEN_ADDR + 1)
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#define MEM_USER_MAXLEN (512 - (MEM_USER_DATA_ADDR - MEM_DELTA_ADDR) * 4)
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2015-06-22 23:03:17 +01:00
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// singleton RTC object
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STATIC const pyb_rtc_obj_t pyb_rtc_obj = {{&pyb_rtc_type}};
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2016-04-21 11:43:37 +01:00
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// ALARM0 state
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uint32_t pyb_rtc_alarm0_wake; // see MACHINE_WAKE_xxx constants
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uint64_t pyb_rtc_alarm0_expiry; // in microseconds
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2016-02-08 19:43:37 +00:00
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void mp_hal_rtc_init(void) {
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uint32_t magic;
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system_rtc_mem_read(MEM_USER_MAGIC_ADDR, &magic, sizeof(magic));
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if (magic != MEM_MAGIC) {
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magic = MEM_MAGIC;
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system_rtc_mem_write(MEM_USER_MAGIC_ADDR, &magic, sizeof(magic));
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uint32_t cal = system_rtc_clock_cali_proc();
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int64_t delta = 0;
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system_rtc_mem_write(MEM_CAL_ADDR, &cal, sizeof(cal));
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system_rtc_mem_write(MEM_DELTA_ADDR, &delta, sizeof(delta));
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}
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2016-04-21 11:43:37 +01:00
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// reset ALARM0 state
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pyb_rtc_alarm0_wake = 0;
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pyb_rtc_alarm0_expiry = 0;
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2016-02-08 19:43:37 +00:00
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}
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2016-01-03 15:55:55 +00:00
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STATIC mp_obj_t pyb_rtc_make_new(const mp_obj_type_t *type, mp_uint_t n_args, mp_uint_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)&pyb_rtc_obj;
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}
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2015-05-11 20:11:37 +01:00
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STATIC uint64_t pyb_rtc_raw_us(uint64_t cal) {
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2016-02-12 21:20:52 +00:00
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return (system_get_rtc_time() * cal) >> 12;
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2015-05-11 20:11:37 +01:00
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};
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void pyb_rtc_set_us_since_2000(uint64_t nowus) {
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uint32_t cal = system_rtc_clock_cali_proc();
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int64_t delta = nowus - pyb_rtc_raw_us(cal);
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// As the calibration value jitters quite a bit, to make the
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// clock at least somewhat practially usable, we need to store it
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system_rtc_mem_write(MEM_CAL_ADDR, &cal, sizeof(cal));
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system_rtc_mem_write(MEM_DELTA_ADDR, &delta, sizeof(delta));
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};
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uint64_t pyb_rtc_get_us_since_2000() {
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uint32_t cal;
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int64_t delta;
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system_rtc_mem_read(MEM_CAL_ADDR, &cal, sizeof(cal));
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system_rtc_mem_read(MEM_DELTA_ADDR, &delta, sizeof(delta));
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return pyb_rtc_raw_us(cal) + delta;
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};
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STATIC mp_obj_t pyb_rtc_datetime(mp_uint_t n_args, const mp_obj_t *args) {
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if (n_args == 1) {
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// Get time
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uint64_t msecs = pyb_rtc_get_us_since_2000() / 1000;
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timeutils_struct_time_t tm;
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timeutils_seconds_since_2000_to_struct_time(msecs / 1000, &tm);
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mp_obj_t tuple[8] = {
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mp_obj_new_int(tm.tm_year),
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mp_obj_new_int(tm.tm_mon),
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mp_obj_new_int(tm.tm_mday),
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mp_obj_new_int(tm.tm_wday),
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mp_obj_new_int(tm.tm_hour),
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mp_obj_new_int(tm.tm_min),
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mp_obj_new_int(tm.tm_sec),
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mp_obj_new_int(msecs % 1000)
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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 time
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mp_obj_t *items;
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mp_obj_get_array_fixed_n(args[1], 8, &items);
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pyb_rtc_set_us_since_2000(
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((uint64_t)timeutils_seconds_since_2000(
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mp_obj_get_int(items[0]),
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mp_obj_get_int(items[1]),
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mp_obj_get_int(items[2]),
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mp_obj_get_int(items[4]),
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mp_obj_get_int(items[5]),
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mp_obj_get_int(items[6])) * 1000 + mp_obj_get_int(items[7])) * 1000);
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return mp_const_none;
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}
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pyb_rtc_datetime_obj, 1, 2, pyb_rtc_datetime);
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STATIC mp_obj_t pyb_rtc_memory(mp_uint_t n_args, const mp_obj_t *args) {
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uint8_t rtcram[MEM_USER_MAXLEN];
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uint32_t len;
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uint32_t magic;
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if (n_args == 1) {
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system_rtc_mem_read(MEM_USER_MAGIC_ADDR, &magic, sizeof(magic));
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if (magic != MEM_MAGIC) {
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return mp_const_none;
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}
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system_rtc_mem_read(MEM_USER_LEN_ADDR, &len, sizeof(len));
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system_rtc_mem_read(MEM_USER_DATA_ADDR, rtcram, len + (4 - len % 4));
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return mp_obj_new_bytes(rtcram, len);
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} else {
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mp_buffer_info_t bufinfo;
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mp_get_buffer_raise(args[1], &bufinfo, MP_BUFFER_READ);
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if (bufinfo.len > MEM_USER_MAXLEN) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError,
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"buffer too long"));
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}
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magic = MEM_MAGIC;
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2016-02-08 19:35:36 +00:00
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system_rtc_mem_write(MEM_USER_MAGIC_ADDR, &magic, sizeof(magic));
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2015-05-11 20:11:37 +01:00
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len = bufinfo.len;
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system_rtc_mem_write(MEM_USER_LEN_ADDR, &len, sizeof(len));
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int i = 0;
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for (; i < bufinfo.len; i++) {
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rtcram[i] = ((uint8_t *)bufinfo.buf)[i];
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}
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system_rtc_mem_write(MEM_USER_DATA_ADDR, rtcram, len + (4 - len % 4));
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return mp_const_none;
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}
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pyb_rtc_memory_obj, 1, 2, pyb_rtc_memory);
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2016-04-21 11:43:37 +01:00
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STATIC mp_obj_t pyb_rtc_alarm(mp_obj_t self_in, mp_obj_t alarm_id, mp_obj_t time_in) {
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(void)self_in; // unused
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// check we want alarm0
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if (mp_obj_get_int(alarm_id) != 0) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "invalid alarm"));
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}
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// set expiry time (in microseconds)
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pyb_rtc_alarm0_expiry = pyb_rtc_get_us_since_2000() + mp_obj_get_int(time_in) * 1000;
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_3(pyb_rtc_alarm_obj, pyb_rtc_alarm);
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STATIC mp_obj_t pyb_rtc_irq(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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enum { ARG_trigger, ARG_wake };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_trigger, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
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{ MP_QSTR_wake, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
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};
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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(allowed_args), allowed_args, args);
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// check we want alarm0
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if (args[ARG_trigger].u_int != 0) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "invalid alarm"));
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}
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// set the wake value
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pyb_rtc_alarm0_wake = args[ARG_wake].u_int;
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_rtc_irq_obj, 1, pyb_rtc_irq);
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2015-05-11 20:11:37 +01:00
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STATIC const mp_map_elem_t pyb_rtc_locals_dict_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR_datetime), (mp_obj_t)&pyb_rtc_datetime_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_memory), (mp_obj_t)&pyb_rtc_memory_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_alarm), (mp_obj_t)&pyb_rtc_alarm_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_irq), (mp_obj_t)&pyb_rtc_irq_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_ALARM0), MP_OBJ_NEW_SMALL_INT(0) },
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};
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STATIC MP_DEFINE_CONST_DICT(pyb_rtc_locals_dict, pyb_rtc_locals_dict_table);
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2015-06-22 23:03:17 +01:00
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const mp_obj_type_t pyb_rtc_type = {
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{ &mp_type_type },
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.name = MP_QSTR_RTC,
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2015-06-22 23:03:17 +01:00
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.make_new = pyb_rtc_make_new,
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.locals_dict = (mp_obj_t)&pyb_rtc_locals_dict,
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};
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