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Giles Booth 2022-12-28 19:13:35 +00:00 committed by GitHub
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apps/suw/README.md
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# Seaside utility watch
A watch that does just what I want when I am at the seaside, showing day, date, month, year, sunrise, sunset, location and approximate high and low tide times.
Touch to toggle between sunrise / sunset and tide times.
Very much a work in progress. Sunrise/set requires location to have already been set in mylocation.json using MyLocation app.
DO NOT RELY ON THESE TIDE TIMES! This is in development.
When working, you will set the next tide time (high or low) in application settings, the watch will then calculate approximate next tide time by adding 6 hours and 12 minutes to the tide time and keep doing so until reset.
This may become very unreliable over time and will need periodic realignment.
![sun rise/set](screenshot.png)
![sun rise/set](screenshot2.png)
## Many faults
- [ ] bug fix to prevent cascading tide time flipping causes it to halt completely - tide time never updates
- [ ] when watch closed and reloaded it reloads tide times from setting file which may be out of date - need to write new times to settings file when swapping occurs
## Many of the to-dos
- [ ] handle tide time not being set and remove default time which is just for testing
- [ ] write tide data back to json file when flipped to keep it up to date when app reloaded
- [ ] tidy up code in general
- [ ] no need to check sunrise and sunset times so often
- [ ] consider a web app for setting next tide time or entering real data

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apps/suw/app-icon.js
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require("heatshrink").decompress(atob("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"))

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apps/suw/app.js
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var SunCalc = require("https://raw.githubusercontent.com/mourner/suncalc/master/suncalc.js");
const LOCATION_FILE = "mylocation.json";
let location;
// load tide times from settings file
var settings = Object.assign({
// default values
nextTideType: "high",
nextTideHour: 0,
nextTideMin: 0,
}, require('Storage').readJSON("suw.json", true) || {});
// flag to see if next tide time has crossed midnight and need to halt tide time swapping
var tideNextDay = false;
// assume next tide is 6h 12m later
var tide1h = settings.nextTideHour;
var tide1m = settings.nextTideMin;
var tide1type = settings.nextTideType;
var tide2m = tide1m +12;
if (tide2m > 59) {
tide2m = tide2m - 60;
var tide2h = tide1h + 7;
}
else {
var tide2h = tide1h + 6;
}
if (tide2h > 23) {
tide2h = tide2h - 24;
}
if (tide1type === "low ") {
var tide2type = "high";
}
else {
var tide2type = "low ";
}
// print(settings.nextTideHour,settings.nextTideMin,settings.nextTideType);
// print(tide2h);
const big = g.getWidth()>200;
const timeFontSize = big?6:5;
const dateFontSize = big?3:2;
//const locationFontSize = 2;
const sunFontSize = 2;
const tideFontSize = 1;
const font = "6x8";
const xyCenter = g.getWidth() / 2;
const yposTime = xyCenter*0.7;
const yposDate = xyCenter*1.1;
const yposSunrise = xyCenter*1.5;
const yposLat = xyCenter*1.7;
const yposLon = xyCenter*1.9;
let showSun = true;
var sunImg = require("heatshrink").decompress(atob("j0ewIIFhgDCmADC4ACBgYCBjEMg0AuEAnEA8EB4EBx/GB4N/wAVB/4GBj/+AYP//gKC+EH5//5+fn//nwOGgEH/4hBh4KBEIPggEGn8YHIVwHII9Bg0DgIWBLJoADA=="));
var seaImg =
require("heatshrink").decompress(atob("kEgwRC/ABH8gE/4EDAgX/4f//gEDh//+H/AgcA/8Ah4EDE/4nXAH4A=="));
// Check settings for what type our clock should be
var is12Hour = (require("Storage").readJSON("setting.json",1)||{})["12hour"];
function numToString(num) {
returnString = String(num);
if (returnString.length === 1) {
returnString = "0"+returnString;
}
return returnString;
}
// requires the myLocation app
function loadLocation() {
location = require("Storage").readJSON(LOCATION_FILE,1)||{};
location.lat = location.lat||51.5072;
location.lon = location.lon||0.1276;
location.location = location.location||"London";
}
// this is from Pastel - perhaps can be replaced with other function
function extractTime(d){
var h = d.getHours(), m = d.getMinutes();
return(("0"+h).substr(-2) + ":" + ("0"+m).substr(-2));
}
var sunRise = "00:00";
var sunSet = "00:00";
function updateSunRiseSunSet(now, lat, lon, line){
// get today's sunlight times for lat/lon
var times = SunCalc.getTimes(new Date(), lat, lon);
// format sunrise time from the Date object
sunRise = extractTime(times.sunrise);
sunSet = extractTime(times.sunset);
}
// timeout used to update every minute
var drawTimeout;
// schedule a draw for the next minute
function queueDraw() {
if (drawTimeout) clearTimeout(drawTimeout);
drawTimeout = setTimeout(function() {
drawTimeout = undefined;
draw();
}, 60000 - (Date.now() % 60000));
}
function draw() {
// get date
var d = new Date();
var da = d.toString().split(" ");
g.reset(); // default draw styles
// drawSting centered
g.setFontAlign(0, 0);
// draw time
var time = da[4].substr(0, 5).split(":");
var hours = time[0],
minutes = time[1];
var meridian = "";
if (is12Hour) {
hours = parseInt(hours,10);
meridian = "AM";
if (hours == 0) {
hours = 12;
meridian = "AM";
} else if (hours >= 12) {
meridian = "PM";
if (hours>12) hours -= 12;
}
hours = (" "+hours).substr(-2);
}
g.setFont("Vector",64); // vector font, 64px
g.drawString(`${hours}:${minutes}`, xyCenter, yposTime, true);
// draw Day, name of month, Date
var date = [da[0], da[2], da[1], da[3].substr(-2)].join(" ");
g.setFont(font, dateFontSize);
g.drawString(date, xyCenter, yposDate, true);
// recalc sunrise / sunset every hour - needs putting in correct place
// if (drawCount % 60 == 0)
updateSunRiseSunSet(new Date(), location.lat, location.lon);
// drawCount++;
// draw sunrise or tide times
g.setFont(font, sunFontSize);
if (showSun) {
g.clearRect(0, xyCenter+17, 175, 175);
g.drawString(sunRise+" "+sunSet , xyCenter, yposSunrise, true);
g.drawImage(sunImg, xyCenter-15, xyCenter+17);
var latitude = location.lat;
latitude = Math.round(latitude * 100) / 100;
var longitude = location.lon;
longitude = Math.round(longitude * 100) / 100;
g.drawString("Lat "+latitude, xyCenter, yposLat, true);
g.drawString("Lon "+longitude, xyCenter, yposLon, true);
}
else {
var textTime = hours + minutes; // use this for making simple time comparisons
var textNextTide = numToString(tide1h)+numToString(tide1m);
print(textNextTide);
if (Number(textTime) > Number(textNextTide) && (!tideNextDay)) {
print("time swap needed");
tide1h = tide2h;
tide1m = tide2m;
tide1type = tide2type;
tide2m = tide2m +12;
if (tide2m > 59) {
tide2m = tide2m - 60;
tide2h = tide2h + 7;
}
else {
tide2h = tide2h + 6;
}
if (tide2h > 23) {
tide2h = tide2h - 24;
}
if (tide2type === "low ") {
tide2type = "high";
}
else {
tide2type = "low ";
}
if (Number(textNextTide) < Number(textTime)) {
tideNextDay = true;
}
else {
tideNextDay = false;
}
}
g.clearRect(0, xyCenter+17, 175, 175);
g.drawString(numToString(tide1h)+numToString(tide1m)+" "+numToString(tide2h)+numToString(tide2m) , xyCenter, 138, true);
g.drawString(tide1type+" "+tide2type , xyCenter, 156, true);
g.drawImage(seaImg, xyCenter-16, xyCenter+17);
}
// print(tide1h,tide1m,tide1type,tide2h,tide2m,tide2type);
queueDraw();
}
function toggleDisplay() {
showSun = ! showSun;
draw();
}
// adding this as it's not getting called at start
loadLocation();
Bangle.on('touch', () => toggleDisplay());
// Stop updates when LCD is off, restart when on
Bangle.on('lcdPower',on=>{
if (on) {
draw(); // draw immediately, queue redraw
} else { // stop draw timer
if (drawTimeout) clearTimeout(drawTimeout);
drawTimeout = undefined;
}
});
// clean app screen
g.clear();
// Show launcher when button pressed
Bangle.setUI("clock");
Bangle.loadWidgets();
Bangle.drawWidgets();
// draw now
draw();

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apps/suw/app.png
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apps/suw/metadata.json
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{ "id": "suw",
"name": "Seaside Utility Watch",
"shortName":"SeaWatch",
"icon": "app.png",
"version":"0.01",
"description": "A watch useful at the seaside",
"type": "clock",
"tags": "clock",
"supports": ["BANGLEJS2"],
"screenshots": [{"url":"screenshot.png"}],
"readme": "README.md",
"allow_emulator": false,
"storage": [
{"name":"suw.app.js","url":"app.js"},
{"name":"suw.settings.js","url":"settings.js"},
{"name":"suw.img","url":"app-icon.js","evaluate":true}
],
"data": [{"name":"suw.json"}]
}

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apps/suw/no-tides-app.js
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var SunCalc = require("https://raw.githubusercontent.com/mourner/suncalc/master/suncalc.js");
const LOCATION_FILE = "mylocation.json";
let location;
const big = g.getWidth()>200;
const timeFontSize = big?6:5;
const dateFontSize = big?3:2;
const locationFontSize = 2;
const sunFontSize = 2;
const tideFontSize = 1;
const font = "6x8";
const xyCenter = g.getWidth() / 2;
const yposTime = xyCenter*0.7;
const yposDate = xyCenter*1.1;
const yposSunrise = xyCenter*1.5;
//const yposSunset = xyCenter*1.4;
const yposLat = xyCenter*1.7;
const yposLon = xyCenter*1.9;
//const yposTide1 = xyCenter*1.6;
//const yposTide2 = xyCenter*1.7;
//const yposTide3 = xyCenter*1.8;
//const yposTide4 = xyCenter*1.9;
var sunImg = require("heatshrink").decompress(atob("j0ewIIFhgDCmADC4ACBgYCBjEMg0AuEAnEA8EB4EBx/GB4N/wAVB/4GBj/+AYP//gKC+EH5//5+fn//nwOGgEH/4hBh4KBEIPggEGn8YHIVwHII9Bg0DgIWBLJoADA=="));
// Check settings for what type our clock should be
var is12Hour = (require("Storage").readJSON("setting.json",1)||{})["12hour"];
// requires the myLocation app
function loadLocation() {
location = require("Storage").readJSON(LOCATION_FILE,1)||{};
location.lat = location.lat||51.5072;
location.lon = location.lon||0.1276;
location.location = location.location||"London";
}
// this is from Pastel - perhaps not needed
function extractTime(d){
var h = d.getHours(), m = d.getMinutes();
return(("0"+h).substr(-2) + ":" + ("0"+m).substr(-2));
}
var sunRise = "00:00";
var sunSet = "00:00";
function updateSunRiseSunSet(now, lat, lon, line){
// get today's sunlight times for lat/lon
var times = SunCalc.getTimes(new Date(), lat, lon);
// format sunrise time from the Date object
sunRise = extractTime(times.sunrise);
sunSet = extractTime(times.sunset);
}
// timeout used to update every minute
var drawTimeout;
// schedule a draw for the next minute
function queueDraw() {
if (drawTimeout) clearTimeout(drawTimeout);
drawTimeout = setTimeout(function() {
drawTimeout = undefined;
draw();
}, 60000 - (Date.now() % 60000));
}
function draw() {
// get date
var d = new Date();
var da = d.toString().split(" ");
g.reset(); // default draw styles
// drawSting centered
g.setFontAlign(0, 0);
// draw time
var time = da[4].substr(0, 5).split(":");
var hours = time[0],
minutes = time[1];
var meridian = "";
if (is12Hour) {
hours = parseInt(hours,10);
meridian = "AM";
if (hours == 0) {
hours = 12;
meridian = "AM";
} else if (hours >= 12) {
meridian = "PM";
if (hours>12) hours -= 12;
}
hours = (" "+hours).substr(-2);
}
// g.setFont(font, timeFontSize);
g.setFont("Vector",66); // vector font, 80px
g.drawString(`${hours}:${minutes}`, xyCenter, yposTime, true);
// g.setFont(font, tideFontSize);
// g.drawString(meridian, xyCenter + 102, yposTime + 10, true);
// draw Day, name of month, Date
var date = [da[0], da[2], da[1], da[3].substr(-2)].join(" ");
g.setFont(font, dateFontSize);
g.drawString(date, xyCenter, yposDate, true);
// recalc sunrise / sunset every hour - needs putting in correct place
// if (drawCount % 60 == 0)
updateSunRiseSunSet(new Date(), location.lat, location.lon);
// drawCount++;
// draw sunrise
g.setFont(font, sunFontSize);
g.drawString(sunRise+" "+sunSet , xyCenter, yposSunrise, true);
// g.drawString("Sunset "+sunSet, xyCenter, yposSunset, true);
// draw sun icon
g.drawImage(sunImg, xyCenter-15, xyCenter+17);
// draw location
g.setFont(font, locationFontSize);
var latitude = location.lat;
latitude = Math.round(latitude * 100) / 100;
var longitude = location.lon;
longitude = Math.round(longitude * 100) / 100;
g.drawString("Lat "+latitude, xyCenter, yposLat, true);
g.drawString("Lon "+longitude, xyCenter, yposLon, true);
// draw tides
// g.setFont(font, tideFontSize);
// g.drawString("High tide 0017 5.58m", xyCenter, yposTide1, true);
// g.setFont(font, tideFontSize);
// g.drawString("Low tide 0651 2.25m", xyCenter, yposTide2, true);
// g.setFont(font, tideFontSize);
// g.drawString("High tide 1302 5.44m", xyCenter, yposTide3, true);
// g.setFont(font, tideFontSize);
// g.drawString("Low tide 1931 2.26m", xyCenter, yposTide4, true);
queueDraw();
}
// Stop updates when LCD is off, restart when on
Bangle.on('lcdPower',on=>{
if (on) {
draw(); // draw immediately, queue redraw
} else { // stop draw timer
if (drawTimeout) clearTimeout(drawTimeout);
drawTimeout = undefined;
}
});
// clean app screen
g.clear();
// Show launcher when button pressed
Bangle.setUI("clock");
Bangle.loadWidgets();
Bangle.drawWidgets();
// draw now
draw();

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apps/suw/settings.js
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(function(back) {
var FILE = "suw.json";
// Load settings
var settings = Object.assign({
nextTideType: "high",
nextTideHour: 0,
nextTideMin: 0,
}, require('Storage').readJSON(FILE, true) || {});
function writeSettings() {
require('Storage').writeJSON(FILE, settings);
}
// Helper method which uses int-based menu item for set of string values
function stringItems(startvalue, writer, values) {
return {
value: (startvalue === undefined ? 0 : values.indexOf(startvalue)),
format: v => values[v],
min: 0,
max: values.length - 1,
wrap: true,
step: 1,
onchange: v => {
writer(values[v]);
writeSettings();
}
};
}
// Helper method which breaks string set settings down to local settings object
function stringInSettings(name, values) {
return stringItems(settings[name], v => settings[name] = v, values);
}
// Show the menu
E.showMenu({
"" : { "title" : "Seaside Watch" },
"< Back" : () => back(),
"Tide type": stringInSettings("nextTideType", ["high", "low "]),
'Hour': {
value: 0|settings.nextTideHour, // 0| converts undefined to 0
min: 0, max: 23,
onchange: v => {
settings.nextTideHour = v;
writeSettings();
}
},
'Minutes': {
value: 0|settings.nextTideMin, // 0| converts undefined to 0
min: 0, max: 59,
onchange: v => {
settings.nextTideMin = v;
writeSettings();
}
},
});
});