Nodered-Timeserver: device display
This commit is contained in:
Verkehrsrot
parent
d4a23c35af
commit
ee3be4ecad
@ -1,4 +1,11 @@
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[
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{
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"id": "449c1517.e25f4c",
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"type": "tab",
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"label": "Timeserver MQTT",
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"disabled": false,
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"info": ""
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},
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{
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"id": "49e3c067.e782e",
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"type": "change",
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@ -49,7 +56,7 @@
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"to": "",
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"reg": false,
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"x": 240,
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"y": 464,
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"y": 500,
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"wires": [
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[
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"84f1cda2.069e7"
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@ -82,7 +89,7 @@
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"retain": "",
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"broker": "2a15ab6f.ab2244",
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"x": 730,
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"y": 464,
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"y": 500,
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"wires": []
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},
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{
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@ -135,7 +142,7 @@
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"action": "",
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"pretty": false,
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"x": 580,
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"y": 464,
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"y": 500,
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"wires": [
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[
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"72d5e7ee.d1eba8"
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@ -165,7 +172,7 @@
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"action": "",
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"property": "payload.payload_raw",
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"x": 420,
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"y": 464,
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"y": 500,
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"wires": [
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[
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"dac8aafa.389298"
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@ -212,11 +219,11 @@
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"type": "function",
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"z": "449c1517.e25f4c",
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"name": "Generate Time Answer",
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"func": "/* LoRaWAN Timeserver\n\nconstruct 6 byte timesync_answer from gateway timestamp and node's time_sync_req\n\nbyte meaning\n0 sequence number (taken from node's time_sync_req)\n1..4 current second (from epoch time 1970)\n5 1/250ths fractions of current second\n\n*/\n\nfunction timecompare(a, b) {\n \n const timeA = a.time;\n const timeB = b.time;\n\n let comparison = 0;\n if (timeA > timeB) {\n comparison = 1;\n } else if (timeA < timeB) {\n comparison = -1;\n }\n return comparison;\n}\n\nlet confidence = 2000; // max millisecond diff gateway time to server time\n\nvar gateways = msg.payload.metadata.gateways;\nvar gateway_time = gateways.map(gw => {\n return {\n time: new Date(gw.time),\n eui: gw.gtw_id,\n }\n });\nvar server_time = new Date(msg.payload.metadata.time);\n\n// validate all gateway timestamps against lorawan server_time (which is assumed to be recent)\nvar gw_timestamps = gateway_time.filter(function (element) {\n return ((element.time > (server_time - confidence) && element.time <= server_time));\n});\n\n// if no timestamp left, we have no valid one and exit\nif (gw_timestamps.length === 0) return null;\n\n// sort time array in ascending order to find most recent timestamp for time answer\ngw_timestamps.sort(timecompare);\n\nvar timestamp = gw_timestamps[0].time;\nvar eui = gw_timestamps[0].eui;\nvar offset = server_time - timestamp;\n\nvar seconds = Math.floor(timestamp/1000);\nvar fractions = (timestamp % 1000) / 4;\nvar seqno = msg.payload.payload_raw[0];\n\nlet buf = new ArrayBuffer(6);\nnew DataView(buf).setUint8(0, seqno);\nnew DataView(buf).setUint32(1, seconds);\nnew DataView(buf).setUint8(5, fractions);\n\nmsg.payload = new Buffer(new Uint8Array(buf));\nvar infoMsg = { payload: eui };\nvar offsetMsg = { payload: offset };\n\nreturn [infoMsg, offsetMsg, msg];",
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"outputs": 3,
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"func": "/* LoRaWAN Timeserver\n\nconstruct 6 byte timesync_answer from gateway timestamp and node's time_sync_req\n\nbyte meaning\n0 sequence number (taken from node's time_sync_req)\n1..4 current second (from epoch time 1970)\n5 1/250ths fractions of current second\n\n*/\n\nfunction timecompare(a, b) {\n \n const timeA = a.time;\n const timeB = b.time;\n\n let comparison = 0;\n if (timeA > timeB) {\n comparison = 1;\n } else if (timeA < timeB) {\n comparison = -1;\n }\n return comparison;\n}\n\nlet confidence = 2000; // max millisecond diff gateway time to server time\n\nvar device = msg.payload.dev_id;\nvar gateways = msg.payload.metadata.gateways;\nvar gateway_time = gateways.map(gw => {\n return {\n time: new Date(gw.time),\n eui: gw.gtw_id,\n }\n });\nvar server_time = new Date(msg.payload.metadata.time);\n\n// validate all gateway timestamps against lorawan server_time (which is assumed to be recent)\nvar gw_timestamps = gateway_time.filter(function (element) {\n return ((element.time > (server_time - confidence) && element.time <= server_time));\n});\n\n// if no timestamp left, we have no valid one and exit\nif (gw_timestamps.length === 0) return null;\n\n// sort time array in ascending order to find most recent timestamp for time answer\ngw_timestamps.sort(timecompare);\n\nvar timestamp = gw_timestamps[0].time;\nvar eui = gw_timestamps[0].eui;\nvar offset = server_time - timestamp;\n\nvar seconds = Math.floor(timestamp/1000);\nvar fractions = (timestamp % 1000) / 4;\nvar seqno = msg.payload.payload_raw[0];\n\nlet buf = new ArrayBuffer(6);\nnew DataView(buf).setUint8(0, seqno);\nnew DataView(buf).setUint32(1, seconds);\nnew DataView(buf).setUint8(5, fractions);\n\nmsg.payload = new Buffer(new Uint8Array(buf));\nvar infoMsg = { payload: eui };\nvar offsetMsg = { payload: offset };\nvar deviceMsg = { payload: device };\n\nreturn [infoMsg, offsetMsg, deviceMsg, msg];",
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"outputs": 4,
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"noerr": 0,
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"x": 360,
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"y": 320,
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"y": 340,
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"wires": [
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[
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"37722d4b.08e3c2",
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@ -226,6 +233,9 @@
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[
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"46ce842a.614d5c"
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],
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[
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"a5dbb4ef.019168"
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],
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[
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"49e3c067.e782e"
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]
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@ -233,6 +243,7 @@
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"outputLabels": [
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"gw_eui",
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"offset_ms",
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"device",
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"time_sync_ans"
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]
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},
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@ -241,7 +252,7 @@
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"type": "debug",
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"z": "449c1517.e25f4c",
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"name": "Timeserver Gw",
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"active": true,
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"active": false,
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"tosidebar": false,
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"console": false,
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"tostatus": true,
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@ -264,7 +275,7 @@
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"format": "{{msg.payload}}",
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"layout": "col-center",
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"x": 810,
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"y": 340,
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"y": 336,
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"wires": []
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},
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{
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@ -290,7 +301,7 @@
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"seg1": "",
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"seg2": "",
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"x": 710,
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"y": 420,
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"y": 416,
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"wires": []
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},
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{
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@ -302,11 +313,11 @@
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"width": 0,
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"height": 0,
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"name": "Recent server",
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"label": "",
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"label": "Gateway",
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"format": "{{msg.payload}}",
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"layout": "col-center",
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"x": 700,
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"y": 380,
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"y": 376,
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"wires": []
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},
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{
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@ -318,13 +329,29 @@
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"outputs": 1,
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"noerr": 0,
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"x": 670,
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"y": 340,
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"y": 336,
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"wires": [
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[
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"8712a5ac.ed18e8"
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]
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]
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},
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{
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"id": "a5dbb4ef.019168",
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"type": "ui_text",
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"z": "449c1517.e25f4c",
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"group": "edb7cc8d.a3817",
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"order": 1,
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"width": 0,
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"height": 0,
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"name": "Recent Device",
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"label": "Device",
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"format": "{{msg.payload}}",
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"layout": "col-center",
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"x": 700,
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"y": 456,
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"wires": []
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},
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{
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"id": "2a15ab6f.ab2244",
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"type": "mqtt-broker",
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