1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
/*
* MIT License
*
* Copyright (c) 2022 Joey Castillo
*
* 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 <stdlib.h>
#include <string.h>
#include <math.h>
#include "watch_utility.h"
#include "mars_time_face.h"
// note: lander coordinates come from Mars24's `marslandmarks.xml` file
static double site_longitudes[MARS_TIME_NUM_SITES] = {
0, // Mars Coordinated Time, at the meridian
360.0 - 109.9, // Zhurong lander site
360.0 - 77.45088572, // Perseverance lander site
360.0 - 135.623447, // InSight lander site
360.0 - 137.441635, // Curiosity lander site
};
static char site_names[MARS_TIME_NUM_SITES][3] = {
"MC",
"ZH",
"PE",
"IN",
"CU",
};
static uint16_t landing_sols[MARS_TIME_NUM_SITES] = {
0,
52387,
52304,
51511,
49269,
};
typedef struct {
uint8_t hour;
uint8_t minute;
uint8_t second;
} mars_clock_hms_t;
static void _h_to_hms(mars_clock_hms_t *date_time, double h) {
unsigned int seconds = (unsigned int)(h * 3600.0);
date_time->hour = seconds / 3600;
seconds = seconds % 3600;
date_time->minute = floor(seconds / 60);
date_time->second = round(seconds % 60);
}
static void _update(movement_settings_t *settings, mars_time_state_t *state) {
char buf[11];
watch_date_time date_time = watch_rtc_get_date_time();
uint32_t now = watch_utility_date_time_to_unix_time(date_time, movement_timezone_offsets[settings->bit.time_zone] * 60);
// TODO: I'm skipping over some steps here.
// https://www.giss.nasa.gov/tools/mars24/help/algorithm.html
double jdut = 2440587.5 + ((double)now / 86400.0);
double jdtt = jdut + ((37.0 + 32.184) / 86400.0);
double jd2k = jdtt - 2451545.0;
double msd = ((jd2k - 4.5) / 1.0274912517) + 44796.0 - 0.0009626;
double mtc = fmod(24 * msd, 24);
double lmt;
if (state->current_site == 0) {
lmt = mtc;
} else {
double longitude = site_longitudes[state->current_site];
double lmst = mtc - ((longitude * 24.0) / 360.0);
lmt = fmod(lmst + 24, 24);
}
if (state->displaying_sol) {
// TODO: this is not right, mission sol should turn over at midnight local time?
uint16_t sol = floor(msd) - landing_sols[state->current_site];
if (sol < 1000) sprintf(&buf[0], "%s Sol%3d", site_names[state->current_site], sol);
else sprintf(&buf[0], "%s $%6d", site_names[state->current_site], sol);
watch_clear_colon();
watch_clear_indicator(WATCH_INDICATOR_24H);
} else {
mars_clock_hms_t mars_time;
_h_to_hms(&mars_time, lmt);
sprintf(&buf[0], "%s %02d%02d%02d", site_names[state->current_site], mars_time.hour, mars_time.minute, mars_time.second);
watch_set_colon();
watch_set_indicator(WATCH_INDICATOR_24H);
}
watch_display_string(buf, 0);
}
void mars_time_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr) {
(void) settings;
(void) watch_face_index;
if (*context_ptr == NULL) {
*context_ptr = malloc(sizeof(mars_time_state_t));
memset(*context_ptr, 0, sizeof(mars_time_state_t));
}
}
void mars_time_face_activate(movement_settings_t *settings, void *context) {
(void) settings;
mars_time_state_t *state = (mars_time_state_t *)context;
(void) state;
}
bool mars_time_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
mars_time_state_t *state = (mars_time_state_t *)context;
switch (event.event_type) {
case EVENT_ACTIVATE:
case EVENT_TICK:
_update(settings, state);
break;
case EVENT_LIGHT_BUTTON_UP:
state->displaying_sol = !state->displaying_sol;
_update(settings, state);
break;
case EVENT_LIGHT_LONG_PRESS:
movement_illuminate_led();
break;
case EVENT_ALARM_BUTTON_UP:
state->current_site = (state->current_site + 1) % MARS_TIME_NUM_SITES;
_update(settings, state);
break;
case EVENT_TIMEOUT:
// TODO: make this lower power so we can avoid timeout
movement_move_to_face(0);
break;
case EVENT_LOW_ENERGY_UPDATE:
// TODO: low energy update
// watch_start_tick_animation(500);
break;
default:
movement_default_loop_handler(event, settings);
break;
}
return true;
}
void mars_time_face_resign(movement_settings_t *settings, void *context) {
(void) settings;
(void) context;
}
|
