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-rw-r--r--esp8266/modpybrtc.c273
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diff --git a/esp8266/modpybrtc.c b/esp8266/modpybrtc.c
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index d69fc47a8e..0000000000
--- a/esp8266/modpybrtc.c
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-/*
- * This file is part of the Micro Python project, http://micropython.org/
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2015 Josef Gajdusek
- *
- * 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 <stdio.h>
-#include <string.h>
-
-#include "py/nlr.h"
-#include "py/obj.h"
-#include "py/runtime.h"
-#include "timeutils.h"
-#include "user_interface.h"
-#include "modpyb.h"
-
-typedef struct _pyb_rtc_obj_t {
- mp_obj_base_t base;
-} pyb_rtc_obj_t;
-
-#define MEM_MAGIC 0x75507921
-#define MEM_DELTA_ADDR 64
-#define MEM_CAL_ADDR (MEM_DELTA_ADDR + 2)
-#define MEM_USER_MAGIC_ADDR (MEM_CAL_ADDR + 1)
-#define MEM_USER_LEN_ADDR (MEM_USER_MAGIC_ADDR + 1)
-#define MEM_USER_DATA_ADDR (MEM_USER_LEN_ADDR + 1)
-#define MEM_USER_MAXLEN (512 - (MEM_USER_DATA_ADDR - MEM_DELTA_ADDR) * 4)
-
-// singleton RTC object
-STATIC const pyb_rtc_obj_t pyb_rtc_obj = {{&pyb_rtc_type}};
-
-// ALARM0 state
-uint32_t pyb_rtc_alarm0_wake; // see MACHINE_WAKE_xxx constants
-uint64_t pyb_rtc_alarm0_expiry; // in microseconds
-
-// RTC overflow checking
-STATIC uint32_t rtc_last_ticks;
-
-void mp_hal_rtc_init(void) {
- uint32_t magic;
-
- system_rtc_mem_read(MEM_USER_MAGIC_ADDR, &magic, sizeof(magic));
- if (magic != MEM_MAGIC) {
- magic = MEM_MAGIC;
- system_rtc_mem_write(MEM_USER_MAGIC_ADDR, &magic, sizeof(magic));
- uint32_t cal = system_rtc_clock_cali_proc();
- int64_t delta = 0;
- system_rtc_mem_write(MEM_CAL_ADDR, &cal, sizeof(cal));
- system_rtc_mem_write(MEM_DELTA_ADDR, &delta, sizeof(delta));
- uint32_t len = 0;
- system_rtc_mem_write(MEM_USER_LEN_ADDR, &len, sizeof(len));
- }
- // system_get_rtc_time() is always 0 after reset/deepsleep
- rtc_last_ticks = system_get_rtc_time();
-
- // reset ALARM0 state
- pyb_rtc_alarm0_wake = 0;
- pyb_rtc_alarm0_expiry = 0;
-}
-
-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) {
- // check arguments
- mp_arg_check_num(n_args, n_kw, 0, 0, false);
-
- // return constant object
- return (mp_obj_t)&pyb_rtc_obj;
-}
-
-void pyb_rtc_set_us_since_2000(uint64_t nowus) {
- uint32_t cal = system_rtc_clock_cali_proc();
- // Save RTC ticks for overflow detection.
- rtc_last_ticks = system_get_rtc_time();
- int64_t delta = nowus - (((uint64_t)rtc_last_ticks * cal) >> 12);
-
- // As the calibration value jitters quite a bit, to make the
- // clock at least somewhat practially usable, we need to store it
- system_rtc_mem_write(MEM_CAL_ADDR, &cal, sizeof(cal));
- system_rtc_mem_write(MEM_DELTA_ADDR, &delta, sizeof(delta));
-};
-
-uint64_t pyb_rtc_get_us_since_2000() {
- uint32_t cal;
- int64_t delta;
- uint32_t rtc_ticks;
-
- system_rtc_mem_read(MEM_CAL_ADDR, &cal, sizeof(cal));
- system_rtc_mem_read(MEM_DELTA_ADDR, &delta, sizeof(delta));
-
- // ESP-SDK system_get_rtc_time() only returns uint32 and therefore
- // overflow about every 7:45h. Thus, we have to check for
- // overflow and handle it.
- rtc_ticks = system_get_rtc_time();
- if (rtc_ticks < rtc_last_ticks) {
- // Adjust delta because of RTC overflow.
- delta += (uint64_t)cal << 20;
- system_rtc_mem_write(MEM_DELTA_ADDR, &delta, sizeof(delta));
- }
- rtc_last_ticks = rtc_ticks;
-
- return (((uint64_t)rtc_ticks * cal) >> 12) + delta;
-};
-
-void rtc_prepare_deepsleep(uint64_t sleep_us) {
- // RTC time will reset at wake up. Let's be preared for this.
- int64_t delta = pyb_rtc_get_us_since_2000() + sleep_us;
- system_rtc_mem_write(MEM_DELTA_ADDR, &delta, sizeof(delta));
-}
-
-STATIC mp_obj_t pyb_rtc_datetime(mp_uint_t n_args, const mp_obj_t *args) {
- if (n_args == 1) {
- // Get time
- uint64_t msecs = pyb_rtc_get_us_since_2000() / 1000;
-
- timeutils_struct_time_t tm;
- timeutils_seconds_since_2000_to_struct_time(msecs / 1000, &tm);
-
- mp_obj_t tuple[8] = {
- mp_obj_new_int(tm.tm_year),
- mp_obj_new_int(tm.tm_mon),
- mp_obj_new_int(tm.tm_mday),
- mp_obj_new_int(tm.tm_wday),
- mp_obj_new_int(tm.tm_hour),
- mp_obj_new_int(tm.tm_min),
- mp_obj_new_int(tm.tm_sec),
- mp_obj_new_int(msecs % 1000)
- };
-
- return mp_obj_new_tuple(8, tuple);
- } else {
- // Set time
- mp_obj_t *items;
- mp_obj_get_array_fixed_n(args[1], 8, &items);
-
- pyb_rtc_set_us_since_2000(
- ((uint64_t)timeutils_seconds_since_2000(
- mp_obj_get_int(items[0]),
- mp_obj_get_int(items[1]),
- mp_obj_get_int(items[2]),
- mp_obj_get_int(items[4]),
- mp_obj_get_int(items[5]),
- mp_obj_get_int(items[6])) * 1000 + mp_obj_get_int(items[7])) * 1000);
-
- return mp_const_none;
- }
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pyb_rtc_datetime_obj, 1, 2, pyb_rtc_datetime);
-
-STATIC mp_obj_t pyb_rtc_memory(mp_uint_t n_args, const mp_obj_t *args) {
- uint8_t rtcram[MEM_USER_MAXLEN];
- uint32_t len;
-
- if (n_args == 1) {
- // read RTC memory
-
- system_rtc_mem_read(MEM_USER_LEN_ADDR, &len, sizeof(len));
- system_rtc_mem_read(MEM_USER_DATA_ADDR, rtcram, len + (4 - len % 4));
-
- return mp_obj_new_bytes(rtcram, len);
- } else {
- // write RTC memory
-
- mp_buffer_info_t bufinfo;
- mp_get_buffer_raise(args[1], &bufinfo, MP_BUFFER_READ);
-
- if (bufinfo.len > MEM_USER_MAXLEN) {
- nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError,
- "buffer too long"));
- }
-
- len = bufinfo.len;
- system_rtc_mem_write(MEM_USER_LEN_ADDR, &len, sizeof(len));
-
- int i = 0;
- for (; i < bufinfo.len; i++) {
- rtcram[i] = ((uint8_t *)bufinfo.buf)[i];
- }
-
- system_rtc_mem_write(MEM_USER_DATA_ADDR, rtcram, len + (4 - len % 4));
-
- return mp_const_none;
- }
-
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pyb_rtc_memory_obj, 1, 2, pyb_rtc_memory);
-
-STATIC mp_obj_t pyb_rtc_alarm(mp_obj_t self_in, mp_obj_t alarm_id, mp_obj_t time_in) {
- (void)self_in; // unused
-
- // check we want alarm0
- if (mp_obj_get_int(alarm_id) != 0) {
- nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "invalid alarm"));
- }
-
- // set expiry time (in microseconds)
- pyb_rtc_alarm0_expiry = pyb_rtc_get_us_since_2000() + (uint64_t)mp_obj_get_int(time_in) * 1000;
-
- return mp_const_none;
-
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_3(pyb_rtc_alarm_obj, pyb_rtc_alarm);
-
-STATIC mp_obj_t pyb_rtc_alarm_left(size_t n_args, const mp_obj_t *args) {
- // check we want alarm0
- if (n_args > 1 && mp_obj_get_int(args[1]) != 0) {
- mp_raise_ValueError("invalid alarm");
- }
-
- uint64_t now = pyb_rtc_get_us_since_2000();
- if (pyb_rtc_alarm0_expiry <= now) {
- return MP_OBJ_NEW_SMALL_INT(0);
- } else {
- return mp_obj_new_int((pyb_rtc_alarm0_expiry - now) / 1000);
- }
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pyb_rtc_alarm_left_obj, 1, 2, pyb_rtc_alarm_left);
-
-STATIC mp_obj_t pyb_rtc_irq(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
- enum { ARG_trigger, ARG_wake };
- static const mp_arg_t allowed_args[] = {
- { MP_QSTR_trigger, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
- { MP_QSTR_wake, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
- };
- mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
- mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
-
- // check we want alarm0
- if (args[ARG_trigger].u_int != 0) {
- nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "invalid alarm"));
- }
-
- // set the wake value
- pyb_rtc_alarm0_wake = args[ARG_wake].u_int;
-
- return mp_const_none;
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_KW(pyb_rtc_irq_obj, 1, pyb_rtc_irq);
-
-STATIC const mp_map_elem_t pyb_rtc_locals_dict_table[] = {
- { MP_OBJ_NEW_QSTR(MP_QSTR_datetime), (mp_obj_t)&pyb_rtc_datetime_obj },
- { MP_OBJ_NEW_QSTR(MP_QSTR_memory), (mp_obj_t)&pyb_rtc_memory_obj },
- { MP_OBJ_NEW_QSTR(MP_QSTR_alarm), (mp_obj_t)&pyb_rtc_alarm_obj },
- { MP_OBJ_NEW_QSTR(MP_QSTR_alarm_left), (mp_obj_t)&pyb_rtc_alarm_left_obj },
- { MP_OBJ_NEW_QSTR(MP_QSTR_irq), (mp_obj_t)&pyb_rtc_irq_obj },
- { MP_OBJ_NEW_QSTR(MP_QSTR_ALARM0), MP_OBJ_NEW_SMALL_INT(0) },
-};
-STATIC MP_DEFINE_CONST_DICT(pyb_rtc_locals_dict, pyb_rtc_locals_dict_table);
-
-const mp_obj_type_t pyb_rtc_type = {
- { &mp_type_type },
- .name = MP_QSTR_RTC,
- .make_new = pyb_rtc_make_new,
- .locals_dict = (mp_obj_t)&pyb_rtc_locals_dict,
-};