commit a2cc0ee158c78c6b2222c5c04e2a5a6e89ea0ccb
Author: s.golasch <sebastian.golasch@telekom.de>
Date:   Tue Aug 1 14:21:39 2023 +0200

    first commit

diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..5008ddf
Binary files /dev/null and b/.DS_Store differ
diff --git a/hello.js b/hello.js
new file mode 100644
index 0000000..327e04d
--- /dev/null
+++ b/hello.js
@@ -0,0 +1,7 @@
+!(async function main () {
+  const coordinator = new NetworkConnection({ port: 9000, host: '192.168.178.95' })
+  await coordinator.connect()
+  const [message, crc, fullMessage] = await coordinator.sendCommand(Buffer.from('fd00030001009e03', 'hex'))
+  console.log([message, crc, fullMessage])
+  coordinator.__emitter.on('event', console.log.bind(console))
+}())
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..a94d3b2
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,35 @@
+{
+  "name": "thingie",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "base64-js": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.1.tgz",
+      "integrity": "sha512-mLQ4i2QO1ytvGWFWmcngKO//JXAQueZvwEKtjgQFM4jIK0kU+ytMfplL8j+n5mspOfjHwoAg+9yhb7BwAHm36g=="
+    },
+    "buffer": {
+      "version": "5.4.2",
+      "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.4.2.tgz",
+      "integrity": "sha512-iy9koArjAFCzGnx3ZvNA6Z0clIbbFgbdWQ0mKD3hO0krOrZh8UgA6qMKcZvwLJxS+D6iVR76+5/pV56yMNYTag==",
+      "requires": {
+        "base64-js": "^1.0.2",
+        "ieee754": "^1.1.4"
+      }
+    },
+    "crc": {
+      "version": "3.8.0",
+      "resolved": "https://registry.npmjs.org/crc/-/crc-3.8.0.tgz",
+      "integrity": "sha512-iX3mfgcTMIq3ZKLIsVFAbv7+Mc10kxabAGQb8HvjA1o3T1PIYprbakQ65d3I+2HGHt6nSKkM9PYjgoJO2KcFBQ==",
+      "requires": {
+        "buffer": "^5.1.0"
+      }
+    },
+    "ieee754": {
+      "version": "1.1.13",
+      "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.1.13.tgz",
+      "integrity": "sha512-4vf7I2LYV/HaWerSo3XmlMkp5eZ83i+/CDluXi/IGTs/O1sejBNhTtnxzmRZfvOUqj7lZjqHkeTvpgSFDlWZTg=="
+    }
+  }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..69b9178
--- /dev/null
+++ b/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "thingie",
+  "version": "1.0.0",
+  "description": "",
+  "main": "thingie.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "crc": "^3.8.0"
+  }
+}
diff --git a/thingie.js b/thingie.js
new file mode 100644
index 0000000..c73abc4
--- /dev/null
+++ b/thingie.js
@@ -0,0 +1,78 @@
+const HMUARTLGW_DST_OS = 0
+const HMUARTLGW_DST_APP = '1'
+
+const crc = function (message) {
+  var $crc = 0xd77f
+  var buf = Buffer.from(message, 'hex')
+  for (var byte of buf) {
+    $crc ^= (byte << 8) & 0xff00
+    for (var $i = 0; $i < 8; $i++) {
+			if ($crc & 0x8000) {
+				$crc = ($crc << 1) & 0xffff
+				$crc ^= 0x8005
+			} else {
+				$crc = ($crc << 1) & 0xffff
+			}
+    }
+  }
+  return $crc.toString(16)
+}
+
+let leading = 'fd00'
+let dst = String('0' + String(HMUARTLGW_DST_APP))
+let msgCountPerDevice = 0
+let msgCountPerCoordinator = 19
+let length = 0
+let filler = '000000'
+let payload = `A0 11 670A2A 19C4DB 0201 C8 0000`.replace(/ /g, '').toString('hex')
+
+// increase counter
+msgCountPerDevice = parseInt(msgCountPerDevice + 1, 10)
+msgCountPerCoordinator = parseInt(msgCountPerCoordinator + 1, 10)
+
+// calculate length
+length = ((payload.length + 2) / 2)
+
+// get hex values from counter
+let msgCountPerDeviceHex = parseInt(msgCountPerDevice, 10).toString(16)
+let msgCountPerCoordinatorHex = parseInt(msgCountPerCoordinator, 10).toString(16)
+
+if (msgCountPerDeviceHex.length === 1) {
+  msgCountPerDeviceHex = '0' + msgCountPerDeviceHex
+}
+
+if (msgCountPerCoordinatorHex.length === 1) {
+  msgCountPerCoordinatorHex = '0' + msgCountPerCoordinatorHex
+}
+
+// build frame
+let frame = `${leading} ${length} ${dst} ${msgCountPerCoordinatorHex} 02 ${filler} ${msgCountPerDeviceHex} ${payload}`.replace(/ /g, '')
+
+// calculate crc
+frame += crc(frame)
+
+const net = require('net');
+const client = net.createConnection({ port: 9000, host: '192.168.178.95' }, () => {
+  // 'connect' listener
+  console.log('connected to server!');
+  console.log(Buffer.from(frame, 'hex'))
+  client.write(Buffer.from(frame, 'hex'));
+  //client.write(Buffer.from('fd00030001009e03', 'hex'));
+  //client.write(Buffer.from('fd00030002039409', 'hex'));
+});
+client.on('data', (data) => {
+  console.log(data.toString())
+});
+client.on('end', () => {
+  console.log('disconnected from server');
+})
+
+// C: fd00 03 0001 009e03
+// D: fd00 0e 0001 0402 436f5f4350555f417070
+
+// C: fd00 03 0002 039409
+// D: fd00 04 0002 04011916 -> ?
+// D: fd00 0d 000000 436f -> Co
+// D: 5f4350555f417070d831 -> CPU_APP
+// D: fd00 12 0100 050000 -> ?
+// D 26a186701ac33300000000ef3fa001
\ No newline at end of file