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siowu · Jul 13, 2022 · 11642f2 · 11642f2
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diff --git a/.gitignore b/.gitignore
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+# OS generated files #
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+desktop.ini
diff --git a/README.md b/README.md
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+# WebBLE with Paperang 
+
+The only thing this can do right now is print a self-diagnostics page.
+
+Connect, then hit print.
+
+## Some useful BLE related constants:
+
+- Service ID: `49535343-fe7d-4ae5-8fa9-9fafd205e455`
+
+- Characteristic ID: `49535343-6daa-4d02-abf6-19569aca69fe`
diff --git a/bulma.min.css b/bulma.min.css
diff --git a/index.html b/index.html
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+<!DOCTYPE html>
+<head>
+    <script src="script.js"></script>
+    <link rel="stylesheet" href="bulma.min.css">
+</head>
+<body>
+    <div class="container">
+        <p class="title">WebBLE with Paperang</p>
+        <div class="block">
+            <button class="button" onclick="connect();">connect</button>
+            <button class="button" onclick="selfdiag()">Diagnostics</button>
+        </div>
+    </div>
+</body>
diff --git a/script.js b/script.js
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+
+var btservice;
+var sockchar;
+// service: 49535343-fe7d-4ae5-8fa9-9fafd205e455
+// characteristic: 49535343-6daa-4d02-abf6-19569aca69fe
+
+async function connect(){
+    let printer = await navigator.bluetooth.requestDevice({
+        acceptAllDevices:true,
+        optionalServices:['49535343-fe7d-4ae5-8fa9-9fafd205e455']
+    });
+    console.log(printer);
+
+    let pserver = await printer.gatt.connect();
+    btservice = await pserver.getPrimaryService('49535343-fe7d-4ae5-8fa9-9fafd205e455');
+    sockchar = await btservice.getCharacteristic('49535343-6daa-4d02-abf6-19569aca69fe');
+}
+
+async function selfdiag(){
+    let cmdstr = Uint8Array.from([2,27,0,1,0,0,70,137,94,158,3]);
+    sockchar.writeValue(cmdstr);
+}