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index.js
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index.js
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// oaps-hid/index.js
/*jslint node: true */
/*jslint esversion: 6 */
'use strict';
const i2c = require('i2c-bus');
const path = require('path');
const pngparse = require('pngparse');
const extend = require('extend');
var fs = require('fs');
var i2cBus = i2c.openSync(1);
var openapsDir = "/root/myopenaps"; //if you're using a nonstandard OpenAPS directory, set that here. NOT RECOMMENDED.
// setup the display
var displayConfig = require('./config/display.json');
displayConfig.i2cBus = i2cBus;
try {
var display = require('./lib/display/ssd1306')(displayConfig);
displayImage('./static/unicorn.png'); //display logo
} catch (e) {
console.warn("Could not setup display:", e);
}
// setup battery voltage monitor
var voltageConfig = require('./config/voltage.json')
voltageConfig.i2cBus = i2cBus
var voltage = require('./lib/voltage/voltage')(voltageConfig)
// setup socket server for external commands
var batteryConfig = require('./config/battery.json')
var socketServer = require('./lib/socket-server/socket-server')({
voltage: voltage,
battery: batteryConfig
})
socketServer
.on('error', (err) => {
console.log('socket-server error: ', err.reason)
})
.on('warning', (warn) => {
console.log('socket-server warning: ', warn.reason)
})
.on('displaystatus', function () {
if (display) {
var preferences;
fs.readFile(openapsDir+'/preferences.json', function (err, data) {
if (err) throw err;
preferences = JSON.parse(data);
if (preferences.status_screen && preferences.status_screen == "bigbgstatus") {
bigBGStatus(display, openapsDir);
} else if (preferences.status_screen && preferences.status_screen == "off") {
//don't auto-update the screen if it's turned off
} else {
graphStatus(display, openapsDir); //default to graph status
}
});
}
})
function displayImage(pathToImage) {
pngparse.parseFile(pathToImage, function(err, image) {
if(err)
throw err
display.clear();
display.oled.drawBitmap(image.data);
});
}
// load up graphical status scripts
const graphStatus = require('./scripts/status.js');
const bigBGStatus = require('./scripts/big_bg_status.js');
// if you want to add your own status display script, it will be easiest to replace one of the above!
// setup the menus
var buttonsConfig = require('./config/buttons.json');
var menuConfig = {
menuFile: process.cwd() + path.sep + './config/menus/menu.json', // file path for the menu definition
onChange: showMenu, // method to call when menu changes
menuSettings: {
displayLines: displayConfig.displayLines - 1, // one line is used for menu title
moreUpLabel: " ^ ^ ^",
moreDownLabel: " v v v"
}
};
var hidMenu = require('./lib/hid-menu/hid-menu')(buttonsConfig, menuConfig);
// configure menu events
hidMenu
.on('nothing', function () {
})
.on('showgraphstatus', function () {
graphStatus(display, openapsDir);
})
.on('showbigBGstatus', function () {
bigBGStatus(display, openapsDir);
})
.on('showlogo', function () {
displayImage('./static/unicorn.png');
})
.on('showvoltage', function () {
voltage()
.then(function (v) {
display.clear();
display.write('Voltage: ' + v);
})
.catch(function (e) {
console.log(e.toString());
});
})
.on('menu_changed', function () {
showMenu(hidMenu);
})
.on('showoutput', function (err, stdout, stderr) {
display.clear();
display.write(stdout);
});
// display the current menu on the display
function showMenu(menu) {
if (display) {
display.clear();
var text = '';
var p = menu.getParentSelect();
text += p ? '[' + p.label + ']\n' : '';
var c = menu.getCurrentSelect();
menu.getActiveMenu().forEach(function (m) {
text += (m.selected ? '>' : ' ') + m.label + '\n';
});
// console.log(text);
display.write(text);
}
}