Support for pi-buttons (#22)

* Converted to use node-pi-buttons module and made pi-buttons a separate service.

* Bugfixes and improvements (#17)

* Fix for low number of BGs and offset

Fixes crash when actual number of BGs in monitor/glucose.json is fewer than the number we want to display (72 or 120). Thanks to @mhaeberli for catching & patching! Also fixes graph offset so we have a continuous line of BGs.

* customizations for jon's production rig

* various personalizations and possible improvements

* revert screenoff code and add pump status to screen

* status screen improvements and bugfixes

* Update README.md

* improvements, bugfixes, and exit on display malfunction

* Clearer error messages

* comments

* fixing error handling when only writing to the screen once

* bugfixes

* stop calling status scripts from the commandline

* use socket server to control display

* improvements and bugfixes

* status screen for cas

* nice typo

* Remove custom rig code

* revert readme

* fixes and improvements

* Revert "upgrade jon-dev with node pi buttons"

* Don't crash if buttons are pressed & screen broken

This should help keep openaps-menu from crashing when the screen is broken.

* bugfixes and add preferences toggle for status

* more preferences, update big_bg_status.js

* Update README.md

* Update menu.json

* Delete casstatus.js

* Revert package.json

Bryan merged upstream bugfixes...

* Remove comma

Random comma?

* Add preferences switch info

* Add 8am-8pm invert display option.

* Add 8am-8pm invert display option.

* Variable name bugfix

* Logic fix for day/night inversion

* Logic fix for day/night inversion

Author: cluckj

README.md

@@ -4,6 +4,22 @@ This is the repository holding the menu-based software code, which you may choos
 
 See [here](https://github.com/EnhancedRadioDevices/Explorer-HAT) for more details on the Explorer HAT hardware.
 
+You can set your preferred auto-updating status screen using the following setting in your `~/myopenaps/preferences.json`:
+
+`"status_screen": "bigbgstatus"` will display the big BG status screen (no graph).
+
+`"status_screen": "off"` will turn the auto-updating screen off.
+
+
+By default, the auto-updating status script will invert the display about 50% of the time, to prevent burn-in on the OLED screen. You can turn this off with the following setting in your `~/myopenaps/preferences.json`:
+
+`"wearOLEDevenly": "off"`
+
+Or you can have it invert the display from 8pm to 8am with:
+
+`"wearOLEDevenly": "nightandday"`
+
+
 ## Example screen outputs (Note: these are examples. The latest code may yield different menu items and screen displays)
 
 ### Status screen:

config/buttons.json

@@ -1,10 +1,10 @@
 {
-  "pins": {
-    "buttonUp": 11,
-    "buttonDown": 13
+  "gpios": {
+    "buttonUp": 17,
+    "buttonDown": 27
   },
   "options": {
-    "pressed": 200,
-    "clicked": 400
+    "socketPath": "/var/run/pi-buttons.sock",
+    "reconnectTimeout": 3000
   }
 }

config/menus/menu.json

@@ -4,8 +4,11 @@
     "menu": [
       {
         "label": "Status Graph",
-        "command": "node scripts/status.js",
-        "emit": "nothing"
+        "emit": "showgraphstatus"
+      },
+      {
+        "label": "Big BG Status",
+        "emit": "showbigBGstatus"
       },
       {
         "label": "Set Temp Target",
@@ -54,8 +57,7 @@
       },
       {
         "label": "Unicorn Logo",
-        "command": "node scripts/unicorn.js",
-        "emit": "nothing"
+        "emit": "showlogo"
       }
     ]
   },

index.js

@@ -10,21 +10,22 @@ 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;
-var display = require('./lib/display/ssd1306')(displayConfig);
 
-// display the logo
-pngparse.parseFile('./static/unicorn.png', function(err, image) {
-  if(err)
-    throw err
-  display.clear();
-  display.oled.drawBitmap(image.data);
-});
+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')
@@ -44,8 +45,36 @@ socketServer
 .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 == "bigbgstatus") {
+      bigBGStatus(display, openapsDir);
+    } else if (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');
@@ -64,6 +93,15 @@ var hidMenu = require('./lib/hid-menu/hid-menu')(buttonsConfig, menuConfig);
 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) {
@@ -85,16 +123,18 @@ hidMenu
 
 // display the current menu on the display
 function showMenu(menu) {
-  display.clear();
-  var text = '';
+  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';
-  });
+    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);
+    //  console.log(text);
+    display.write(text);
+  }
 }

lib/hid-menu/hid-menu.js

@@ -8,70 +8,71 @@
 const Menube = require('menube');
 
 function createHIDMenu(configButtons, configMenus) {
-  if (!configButtons.pins || !configButtons.pins.buttonUp || !configButtons.pins.buttonDown) {
+  if (!configButtons.gpios || !configButtons.gpios.buttonUp || !configButtons.gpios.buttonDown) {
     throw new Error('Incomplete pins definition in configuration.');
   }
-  var pins = configButtons.pins;
+  var gpios = configButtons.gpios;
   var buttonOptions = configButtons.options || {};
   var onChange = configMenus.onChange;
   var menu = Menube(configMenus.menuFile, configMenus.menuSettings);
   var displayDirty = false;
-  //  var buttons = require('rpi-gpio-buttons')([pins.buttonUp, pins.buttonDown], buttonOptions);
-  var piButtons = require('../pi-buttons');
+  var piButtons = require('node-pi-buttons')(configButtons.options);
 
   menu.on('menu_changed', function () {
     displayDirty = false; // the parent will redraw the display
   });
 
-//  buttons
   piButtons
-  .on('clicked', function (pin) {
+  .on('clicked', function (gpio, data) {
     if (displayDirty) {
       // fake menu changed to force redraw
       menu.emit('menu_changed');
       displayDirty = false;
     }
     else {
-      switch(pin) {
-        case pins.buttonUp:
+      switch(parseInt(gpio, 10)) {
+        case gpios.buttonUp:
         if (!displayDirty) {
           menu.menuUp();
         }
         break;
 
-        case pins.buttonDown:
+        case gpios.buttonDown:
         if (!displayDirty) {
           menu.menuDown();
         }
         break;
       }
     }
   })
-  .on('double_clicked', function (pin) {
+  .on('double_clicked', function (gpio, data) {
     if (displayDirty) {
       // fake menu changed to force redraw
       menu.emit('menu_changed');
       displayDirty = false;
     }
     else {
-      switch (pin) {
-        case pins.buttonUp:
+      switch (parseInt(gpio, 10)) {
+        case gpios.buttonUp:
         menu.menuBack();
         break;
 
-        case pins.buttonDown:
+        case gpios.buttonDown:
         displayDirty = true; // activate may write something to the display
         menu.activateSelect();
         break;
       }
     }
   })
-  .on('released', function (pin) {
+  .on('released', function (gpio, data) {
     if (displayDirty) {
       // fake menu changed to force redraw
       menu.emit('menu_changed');
       displayDirty = false;
     }
+  })
+  .on('error', function (data) {
+    console.log('ERROR: ', data.error);
   });
 
   return menu;