Merge PR #470 - implement automatic DST toggling
Implements logic to automatically offset daylight saving time settings when calculating timezone offsets. This should make the DST functions work automatically with no need for user input in most cases. Reviewed-by: Matheus Afonso Martins Moreira <matheus@matheusmoreira.com> GitHub-Pull-Request: https://github.com/joeycastillo/Sensor-Watch/pull/470
This commit is contained in:
Matheus Afonso Martins Moreira
@@ -44,6 +44,7 @@ of debounce time.
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#include "filesystem.h"
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#include "movement.h"
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#include "shell.h"
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#include "watch_utility.h"
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#ifndef MOVEMENT_FIRMWARE
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#include "movement_config.h"
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@@ -130,6 +131,11 @@ of debounce time.
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#define MOVEMENT_DEFAULT_BIRTHDATE_DAY 0
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#endif
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// Default to having DST get set
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#ifndef MOVEMENT_DEFAULT_DST_ACTIVE
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#define MOVEMENT_DEFAULT_DST_ACTIVE true
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#endif
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#if __EMSCRIPTEN__
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#include <emscripten.h>
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#endif
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@@ -141,7 +147,8 @@ const int32_t movement_le_inactivity_deadlines[8] = {INT_MAX, 600, 3600, 7200, 2
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const int16_t movement_timeout_inactivity_deadlines[4] = {60, 120, 300, 1800};
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movement_event_t event;
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const int16_t movement_timezone_offsets[] = {
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#define NUM_TIME_ZONES 41
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const int16_t movement_timezone_offsets[NUM_TIME_ZONES] = {
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0, // 0 : 0:00:00 (UTC)
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60, // 1 : 1:00:00 (Central European Time)
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120, // 2 : 2:00:00 (South African Standard Time)
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@@ -198,94 +205,50 @@ const int16_t movement_timezone_offsets[] = {
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* having to separately change the hour and timezone info
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* in the time set face.
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*/
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const uint8_t movement_dst_jump_table[] = {
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1, // 0 UTC + 1 = CET
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2, // 1 CET + 1 = SAST
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3, // 2 SAST + 1 = AST
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5, // 3 AST + 1 = GST
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6, // 4 IST + 1 = AT
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7, // 5 GST + 1 = PST
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8, // 6 AT + 1 = IST
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10, // 7 PST + 1 = KT
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11, // 8 IST + 1 = MT
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9, // 9 Nepal has no equivalent DST timezone, but they don't observe DST anyway
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12, // 10 KT + 1 = TST
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11, // 11 Myanmar has no equivalent DST timezone, but they don't observe DST anyway
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13, // 12 TST + 1 = CST
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15, // 13 CST + 1 = JST
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14, // 14 ACWST has no equivalent DST timezone, but they don't observe DST anyway
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17, // 15 JST + 1 = AEST
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18, // 16 ACST + 1 = LHST
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19, // 17 AEST + 1 = SIT
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18, // 18 LHST has no equivalent DST timezone, but they don't observe DST anyway
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20, // 19 SIT + 1 = NZST
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22, // 20 NZST + 1 = TT
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23, // 21 CST + 1 = CDT
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24, // 22 TT + 1 = LIT
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23, // 23 CDT is already a daylight timezone
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24, // 24 LIT has no equivalent DST timezone, but they don't observe DST anyway
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26, // 25 BIT + 1 = NT
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27, // 26 NT + 1 = HAST
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29, // 27 HAST + 1 = AST
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28, // 28 MIT has no equivalent DST timezone, but they don't observe DST anyway
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30, // 29 AST + 1 = PST
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31, // 30 PST + 1 = MST
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32, // 31 MST + 1 = CST
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33, // 32 CST + 1 = EST
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35, // 33 EST + 1 = AST
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36, // 34 VST + 1 = NST
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37, // 35 AST + 1 = BT
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38, // 36 NST + 1 = NDT
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39, // 37 BT + 1 = 39
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38, // 38 NDT is already a daylight timezone
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40, // 39 FNT + 1 = AST
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const int16_t movement_timezone_dst_offsets[NUM_TIME_ZONES] = {
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60, // 0 UTC + 1 = CET
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120, // 1 CET + 1 = SAST
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189, // 2 SAST + 1 = AST
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240, // 3 AST + 1 = GST
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270, // 4 IST + 1 = AT
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300, // 5 GST + 1 = PST
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330, // 6 AT + 1 = IST
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360, // 7 PST + 1 = KT
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390, // 8 IST + 1 = MT
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345, // 9 Nepal has no equivalent DST timezone, but they don't observe DST anyway
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420, // 10 KT + 1 = TST
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390, // 11 Myanmar has no equivalent DST timezone, but they don't observe DST anyway
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480, // 12 TST + 1 = CST
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540, // 13 CST + 1 = JST
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525, // 14 ACWST has no equivalent DST timezone, but they don't observe DST anyway
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600, // 15 JST + 1 = AEST
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630, // 16 ACST + 1 = LHST
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660, // 17 AEST + 1 = SIT
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630, // 18 LHST has no equivalent DST timezone, but they don't observe DST anyway
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720, // 19 SIT + 1 = NZST
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780, // 20 NZST + 1 = TT
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825, // 21 CST + 1 = CDT
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840, // 22 TT + 1 = LIT
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825, // 23 CDT is already a daylight timezone
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840, // 24 LIT has no equivalent DST timezone, but they don't observe DST anyway
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-660, // 25 BIT + 1 = NT
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-600, // 26 NT + 1 = HAST
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-540, // 27 HAST + 1 = AST
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-570, // 28 MIT has no equivalent DST timezone, but they don't observe DST anyway
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-480, // 29 AST + 1 = PST
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-420, // 30 PST + 1 = MST
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-360, // 31 MST + 1 = CST
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-300, // 32 CST + 1 = EST
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-240, // 33 EST + 1 = AST
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-210, // 34 VST + 1 = NST
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-180, // 35 AST + 1 = BT
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-150, // 36 NST + 1 = NDT
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-120, // 37 BT + 1 = 39
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-150, // 38 NDT is already a daylight timezone
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-60, // 39 FNT + 1 = AST
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0 // 40 AST + 1 = UTC
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};
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const uint8_t movement_dst_inverse_jump_table[] = {
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40, // 0
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0, // 1
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1, // 2
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2, // 3
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4, // 4
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3, // 5
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4, // 6
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5, // 7
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6, // 8
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9, // 9
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7, // 10
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8, // 11
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10, // 12
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12, // 13
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14, // 14
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13, // 15
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16, // 16
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15, // 17
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16, // 18
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17, // 19
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19, // 20
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21, // 21
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20, // 22
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21, // 23
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24, // 24
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25, // 25
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25, // 26
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26, // 27
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28, // 28
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27, // 29
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29, // 30
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30, // 31
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31, // 32
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32, // 33
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34, // 34
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33, // 35
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34, // 36
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35, // 37
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36, // 38
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37, // 39
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39 // 40
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};
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const char movement_valid_position_0_chars[] = " AaBbCcDdEeFGgHhIiJKLMNnOoPQrSTtUuWXYZ-='+\\/0123456789";
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const char movement_valid_position_1_chars[] = " ABCDEFHlJLNORTtUX-='01378";
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@@ -323,6 +286,31 @@ static inline void _movement_disable_fast_tick_if_possible(void) {
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}
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}
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static bool _check_and_act_on_daylight_savings(void) {
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if (!movement_state.settings.bit.dst_active) return false;
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watch_date_time date_time = watch_rtc_get_date_time();
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// No need for all of the unix time calculations for times not at the beginning or end of the hour
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if (date_time.unit.minute > 1 && date_time.unit.minute < 59) return false;
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uint8_t dst_result = get_dst_status(date_time);
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bool dst_skip_rolling_back = get_dst_skip_rolling_back();
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if (dst_skip_rolling_back && (dst_result == DST_ENDED)) {
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clear_dst_skip_rolling_back();
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}
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else if (dst_result == DST_ENDING && !dst_skip_rolling_back) {
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date_time.unit.hour = (date_time.unit.hour + 24 - 1) % 24;
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watch_rtc_set_date_time(date_time);
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set_dst_skip_rolling_back();
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return true;
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}
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else if (dst_result == DST_STARTING) {
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date_time.unit.hour = (date_time.unit.hour + 1) % 24;
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watch_rtc_set_date_time(date_time);
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return true;
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}
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return false;
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}
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static void _movement_handle_background_tasks(void) {
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for(uint8_t i = 0; i < MOVEMENT_NUM_FACES; i++) {
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// For each face, if the watch face wants a background task...
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@@ -332,6 +320,7 @@ static void _movement_handle_background_tasks(void) {
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watch_faces[i].loop(background_event, &movement_state.settings, watch_face_contexts[i]);
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}
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}
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_check_and_act_on_daylight_savings();
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movement_state.needs_background_tasks_handled = false;
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}
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@@ -529,6 +518,12 @@ uint8_t movement_claim_backup_register(void) {
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return movement_state.next_available_backup_register++;
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}
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int16_t get_timezone_offset(uint8_t timezone_idx, watch_date_time date_time) {
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if (movement_state.settings.bit.dst_active && dst_occurring(date_time))
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return movement_timezone_dst_offsets[timezone_idx];
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return movement_timezone_offsets[timezone_idx];
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}
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void app_init(void) {
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#if defined(NO_FREQCORR)
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watch_rtc_freqcorr_write(0, 0);
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@@ -551,6 +546,20 @@ void app_init(void) {
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movement_state.birthdate.bit.year = MOVEMENT_DEFAULT_BIRTHDATE_YEAR;
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movement_state.birthdate.bit.month = MOVEMENT_DEFAULT_BIRTHDATE_MONTH;
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movement_state.birthdate.bit.day = MOVEMENT_DEFAULT_BIRTHDATE_DAY;
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movement_state.settings.bit.dst_active = MOVEMENT_DEFAULT_DST_ACTIVE;
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#ifdef MAKEFILE_TIMEZONE
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timezone_offsets = dst_occurring(watch_rtc_get_date_time()) ? movement_timezone_dst_offsets : movement_timezone_offsets;
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for (int i = 0; i < NUM_TIME_ZONES; i++) {
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if (timezone_offsets[i] == MAKEFILE_TIMEZONE) {
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movement_state.settings.bit.time_zone = i;
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break;
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}
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}
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#else
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movement_state.settings.bit.time_zone = 35; // Atlantic Time as default
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#endif
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movement_state.light_ticks = -1;
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movement_state.alarm_ticks = -1;
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movement_state.next_available_backup_register = 4;
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@@ -559,11 +568,13 @@ void app_init(void) {
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filesystem_init();
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#if __EMSCRIPTEN__
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const int16_t* timezone_offsets;
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int32_t time_zone_offset = EM_ASM_INT({
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return -new Date().getTimezoneOffset();
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});
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for (int i = 0, count = sizeof(movement_timezone_offsets) / sizeof(movement_timezone_offsets[0]); i < count; i++) {
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if (movement_timezone_offsets[i] == time_zone_offset) {
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timezone_offsets = dst_occurring(watch_rtc_get_date_time()) ? movement_timezone_dst_offsets : movement_timezone_offsets;
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for (int i = 0; i < NUM_TIME_ZONES; i++) {
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if (timezone_offsets[i] == time_zone_offset) {
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movement_state.settings.bit.time_zone = i;
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break;
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}
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