From a8dc1dbb17197fdeb3ee7fe1fc3b20e10ad36434 Mon Sep 17 00:00:00 2001
From: Gordon Williams <gw@pur3.co.uk>
Date: Fri, 7 Aug 2020 12:06:58 +0100
Subject: [PATCH] OpenSeizureDetector Widget

---
 apps.json                   |  13 ++++++++++++
 apps/openseizure/ChangeLog  |   1 +
 apps/openseizure/README.md  |  12 +++++++++++
 apps/openseizure/widget.js  |  41 ++++++++++++++++++++++++++++++++++++
 apps/openseizure/widget.png | Bin 0 -> 2974 bytes
 5 files changed, 67 insertions(+)
 create mode 100644 apps/openseizure/ChangeLog
 create mode 100644 apps/openseizure/README.md
 create mode 100644 apps/openseizure/widget.js
 create mode 100644 apps/openseizure/widget.png

diff --git a/apps.json b/apps.json
index a0af1f7a3..b5584b55c 100644
--- a/apps.json
+++ b/apps.json
@@ -2118,6 +2118,19 @@
       {"name":"osgridref.img","url":"app-icon.js","evaluate":true}
     ]
   },
+  { "id": "openseizure",
+    "name": "OpenSeizureDetector Widget",
+    "shortName":"Short Name",
+    "icon": "widget.png",
+    "version":"0.01",
+    "description": "[BETA!] A widget to work alongside [OpenSeizureDetector](https://www.openseizuredetector.org.uk/)",
+    "tags": "widget",
+    "type": "widget",
+    "readme": "README.md",
+    "storage": [
+      {"name":"openseizure.wid.js","url":"widget.js"}
+    ]
+  },
   {"id": "counter",
   "name": "Counter",
   "icon": "counter_icon.png",
diff --git a/apps/openseizure/ChangeLog b/apps/openseizure/ChangeLog
new file mode 100644
index 000000000..4c21f3ace
--- /dev/null
+++ b/apps/openseizure/ChangeLog
@@ -0,0 +1 @@
+0.01: New Widget!
diff --git a/apps/openseizure/README.md b/apps/openseizure/README.md
new file mode 100644
index 000000000..10a3a8a79
--- /dev/null
+++ b/apps/openseizure/README.md
@@ -0,0 +1,12 @@
+# OpenSeizureDetector Widget
+
+A widget to work alongside [OpenSeizureDetector](https://www.openseizuredetector.org.uk/)
+
+This is currently just a test and is not ready for everyday use.
+
+When the widget is running it puts the accelerometer into 25Hz mode, and then
+roughly every second it outputs 20 samples (bytes) of acceleration data as a notification
+on BLE Service  `"a19585e9-0001-39d0-015f-b3e2b9a0c854"`, characteristic `"a19585e9-0002-39d0-015f-b3e2b9a0c854"`.
+
+Each byte is 1/25th of a second, with a magnitude of acceleration. It is scaled
+such that 1g is 64.
diff --git a/apps/openseizure/widget.js b/apps/openseizure/widget.js
new file mode 100644
index 000000000..f176d2884
--- /dev/null
+++ b/apps/openseizure/widget.js
@@ -0,0 +1,41 @@
+(() => {
+  function draw() {
+    g.reset();
+    g.drawImage(E.toArrayBuffer(atob("GBiEBAAAAAABEREQAAAAAAAAAAAKmZkgAAAAAAAAAAAKmZkgAAAAAAAAAAAKkzkgAAAAAAACIQAKkzkgABIgAAAZmSAKPykgApmRAAApmZoqMjkiqZmSAAKZmZmZ8zmpmZmZIAKZmZmZMzmZmZmZIAEpmZmZkzqZmZmSEAACqZmZkjOZmZogAAAAApmZkjOZmSAAAAAAApmZn/mZmSAAAAACqZmZrymZmZogAAEpmZmZkzmZmZmSEAqZmZmZkjqZmZmZoAKZmZmamvmpmZmZIAApmZIan6mhKZmSAAAZmiAKkymgAqmRAAACIAAKkimgAAIgAAAAAAAKkimgAAAAAAAAAAAKmZmgAAAAAAAAAAAKmZmgAAAAAAAAAAABEREQAAAAAA==")), this.x, this.y);
+  }
+
+  var accelData = new Uint8Array(20);
+  var accelIdx = 0;
+  //http://kionixfs.kionix.com/en/datasheet/KX023-1025%20Specifications%20Rev%2012.0.pdf
+  Bangle.accelWr(0x1B,0x01 | 0x40); // 25hz output, ODR/2 filter
+  Bangle.setPollInterval(40); // 25hz input
+  Bangle.on('accel',function(a) {
+    accelData[accelIdx++] = E.clip(a.mag*64,0,255);
+    if (accelIdx>=accelData.length) {
+      accelIdx = 0;
+      try { NRF.updateServices({
+        "a19585e9-0001-39d0-015f-b3e2b9a0c854" : {
+          "a19585e9-0002-39d0-015f-b3e2b9a0c854" : {
+            value : accelData, notify : true
+          }
+        }
+      })} catch(e) {};
+    }
+  });
+
+  NRF.setServices({
+    "a19585e9-0001-39d0-015f-b3e2b9a0c854" : {
+      "a19585e9-0002-39d0-015f-b3e2b9a0c854" : {
+        value : accelData,
+        maxLen : 20,
+        readable : true,
+        notify : true
+      }
+    }
+  });
+
+  // add your widget
+  WIDGETS["openseizure"]={
+    area:"tl", width: 24, draw:draw
+  };
+})()
diff --git a/apps/openseizure/widget.png b/apps/openseizure/widget.png
new file mode 100644
index 0000000000000000000000000000000000000000..9c0ecb772e87055473ab67f61c8553051d5265a8
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