parse FixedDataHeader in longframe

src/codetables.ts

@@ -0,0 +1,31 @@
+export namespace MeterbusLibCodeTables {
+    export const MEDIUM_CODE : string[] =
+            ['Other', 
+               'Oil', 
+               'Electrity', 
+               'Gas', 
+               'Heat (Volume measured at return temperature: outlet',
+               'Steam', 
+               'Hot Water', 
+               'Water', 
+               'Heat Cost Allocator', 
+               'Compressed Air',
+               'Cooling Load Meter (Volume measured at return temperature: outlet', 
+               'Cooling Load Meter (Volume measured at flow temperature: inlet',
+               'Heat (Volume measured at flow temperature: inlet)', 
+               'Heat / Cooling Load Meter',
+               'Bus / System', 
+               'Unknown Medium',
+               'Reserved (10)',
+               'Reserved (11)',
+               'Reserved (12)',
+               'Reserved (13)',
+               'Reserved (14)',
+               'Reserved (15)',
+               'Cold Water',
+               'Dual Water',
+               'Pressure',
+               'A/D Converter',
+            ]
+
+}

src/index.ts

@@ -1,5 +1,6 @@
 export {MeterbusLib} from './meterbus'
 export {MeterbusLibUtils} from './utils'
 export {MeterbusLibLongFrame} from './longframe'
-import {MeterbusLibExceptions} from './exceptions'
-import {MeterbusLibFrames} from './simpleframes'
+export {MeterbusLibExceptions} from './exceptions'
+export {MeterbusLibFrames} from './simpleframes'
+export {MeterbusLibCodeTables} from './codetables'

src/longframe.ts

@@ -1,16 +1,60 @@
 import {MeterbusLibExceptions} from './exceptions'
 import {MeterbusLibFrames} from './simpleframes'
+import {MeterbusLibUtils} from './utils'
+import {MeterbusLibCodeTables} from './codetables'
 
 export namespace MeterbusLibLongFrame {
     export class LongFrame extends MeterbusLibFrames.ControlFrame {
+        private _fixedDataHeader : FixedDataHeader
+        get fixedDataHeader() : FixedDataHeader { return this._fixedDataHeader }
+
         constructor(telegram : number[]) {
             super(telegram)
         }
 
         parse2() {
             super.parse2() // control frame parse2 method
+            this._fixedDataHeader = new FixedDataHeader(this._telegram.slice(7, 19))
+            this._fixedDataHeader.parse()
         }
     }
 
+    export class FixedDataHeader {
+        private _data : number[]
+
+        private _identNo : number
+        private _manufacturer : string
+        private _version : number
+        private _medium : string
+        private _accessNo : number
+        private _status : number
+        private _signature : number[]
+
+        get identNo() : number { return this._identNo }
+        get manufacturer() : string { return this._manufacturer }
+        get version() : number { return this._version }
+        get medium() : string { return this._medium }
+        get accessNo() : number { return this._accessNo }
+        get status() : number { return this._status }
+        get signature() : number[] { return this._signature }
+
+        constructor(data : number[]) {
+            this._data = data
+        }
+
+        parse() : void {
+            this._identNo = MeterbusLibUtils.bcd(this._data.slice(0, 4))
+            this._manufacturer = MeterbusLibUtils.manufCode(this._data.slice(4, 6))
+            this._version = this._data[6]
+            this._medium = MeterbusLibCodeTables.MEDIUM_CODE[this._data[7]]
+            this._accessNo = this._data[8]
+            this._status = this._data[9]
+            this._signature = this._data.slice(10, 12)
+        }
+
+        getJSON() : string {
+            return JSON.stringify(this)
+        }
+    }
 
 }

src/meterbus.test.ts

@@ -2,7 +2,9 @@ import {MeterbusLib} from './meterbus'
 import {MeterbusLibLongFrame} from './longframe'
 import {MeterbusLibExceptions} from './exceptions'
 import {MeterbusLibFrames} from './simpleframes'
+import {MeterbusLibCodeTables} from './codetables'
 
+ 
 import * as mocha from 'mocha'
 import * as chai from 'chai'
 
@@ -134,4 +136,43 @@ describe('The Meterbus Library', () => {
         expect((telegram.frame as MeterbusLibFrames.ControlFrame).ciField).to.equal(3)
     })
 
+    describe('The Meterbus Longframe Library', () => {
+        let telegram : MeterbusLib.Telegram
+
+        beforeEach(() => {
+            telegram = new MeterbusLib.Telegram()
+            telegram.fromHexString(inputOkLongFrame_1phase_electric)
+            telegram.parse()
+        })
+
+        it('should find the identNo', () => {
+            expect((telegram.frame as MeterbusLibLongFrame.LongFrame).fixedDataHeader.identNo)
+              .to.equal(17001300)
+        })
+        it('should find the manufacturer', () => {
+            expect((telegram.frame as MeterbusLibLongFrame.LongFrame).fixedDataHeader.manufacturer)
+              .to.equal("FIN")
+        })
+        it('should find the version', () => {
+            expect((telegram.frame as MeterbusLibLongFrame.LongFrame).fixedDataHeader.version)
+              .to.equal(0x24)
+        })
+        it('should find the medium', () => {
+            expect((telegram.frame as MeterbusLibLongFrame.LongFrame).fixedDataHeader.medium)
+              .to.equal("Electrity")
+        })
+        it('should find the accessNo', () => {
+            expect((telegram.frame as MeterbusLibLongFrame.LongFrame).fixedDataHeader.accessNo)
+              .to.equal(0xd6)
+        })
+        it('should find the status', () => {
+            expect((telegram.frame as MeterbusLibLongFrame.LongFrame).fixedDataHeader.status)
+              .to.equal(0)
+        })
+        it('should find the signature', () => {
+            expect((telegram.frame as MeterbusLibLongFrame.LongFrame).fixedDataHeader.signature)
+              .to.deep.equal([0,0])
+        })
+    })
+
 })

src/utils.test.ts

@@ -22,4 +22,7 @@ describe('The Meterbus Library Utils', () => {
     it('should convert a bcd to a number (99999999)', () => {
         expect(MeterbusLibUtils.bcd([0x99, 0x99, 0x99, 0x99])).to.equal(99999999)
     })
+    it('should convert two number to manufacturer code', () => {
+        expect(MeterbusLibUtils.manufCode([0x2e, 0x19])).to.equal("FIN")
+    })
 })

src/utils.ts

@@ -9,4 +9,8 @@ export namespace MeterbusLibUtils {
         return r
     }
 
+    export function manufCode(data : number[]) : string {
+        let v : number = (data[1] << 8) + data[0]
+        return String.fromCharCode((((v >> 10) & 0x1f) + 64), (((v >> 5) & 0x1f) + 64), ((v & 0x1f) + 64))
+    }
 }