BCL Programmers Manual V2.00 (PDF) - Barix

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4.4 Real numbersBCL does not support floating point types. For most applications floating-point-likeoperations can be easily created by scaling values as in the following example.SYSLOG "Computing the circumference and the area of a circle"radius = 13'set radiusphi = 314 'set approximately the value of phi times 100circum = 2*phi*radius 'compute circumferencearea = phi*radius^2'compute the areaSYSLOG "Given circle of radius"+STR$(radius)+ &", the circumference is " &+ STR$(circum/100)+"."+STR$(circum%100)+" and the area is "+ &STR$(area/100)+"."+STR$(area%100)+" ."To print numbers in fixed decimal point format use SPRINTF$ with the %F flag (see section5.6.2 on page 17).4.1 Integer ArraysIt's possible to use one dimensional or two dimensional arrays of integers. Such arrays aredeclared by the DIM command with the following syntax:DIM NAME(INDEX)orDIM NAME(INDEX1,INDEX2)- for a one dimensional array- for a two dimensional arraywhere NAME is the name of the array and and INDEX, INDEX1, INDEX2 are the highestpossible indices. As indexing of array elements starts from zero, an array declared with thehighest possible index INDEX will be of size INDEX+1. For example an array declared as DIMNUM(5) has 6 elements numbered from 0 to 5. Elements of the array can be accessed usingthe syntax NAME(INDEX) or NAME(IND1,IND2). Arrays are initialized to 0 at startup.Code Example:DIM OLD(2) 'declare array of size 3DIM NEW(2) 'declare array of size 3DIM DIFF(2) 'declare array of size 3....DIFF(0) = NEW(0)-OLD(0)DIFF(1) = NEW(1)-OLD(1)DIFF(2) = NEW(2)-OLD(2)4.1.1 Array searchFIND( E, A, [E0] )Searches a one- or two-dimensional integer array (table) A for a key E. Returns the row of thefirst occurrence of the key E in array A (return value counts from 0, i.e. return value 0 meansfirst row in the table), or -1 if not found. The optional parameter E0 specifies the column tosearch, 0 stands for the first column. If not provided the first column is searched.This function is useful for implementation of various lookup tables since it provides a fastsearch in oppose to conventional FOR loop. Example: address lookup in a table of pairs Barix AG | 12/106
4.2 Bit operationsBit operations are implemented with the syntax of integer functions. The following bitoperations are available:NOT( E )Bitwise NOT operation.AND( E [, E1 [, ...] ] )Bitwise AND operation. If only E is given, returns E.OR( E [, E1 [, ...] ] )Bitwise OR operation. If only E is given, returns E.XOR( E [, E1 [,... ] )Bitwise XOR operation. If only E is given, returns E.SHL( E, E0 )Bitwise shift left of E by E0 bits.SHR( E, E0 )Bitwise shift right of E by E0 bits.Note: Some bitwise operations have the same names as logical operations and similarsyntax, but they can be distinguished by the type of their parameters.Barix AG | 13/106
Page 1: BCL Barix Control LanguageBasic lik
Page 4 and 5: 22.06.0906.08.091.09 14/08/0908/09/
Page 6 and 7: 6.4 Subroutines ...................
Page 8 and 9: 17 Example programs ...............
Page 10 and 11: 1.2 Supported devicesBCL is current
Page 12 and 13: the project (HTML, graphics etc). T
Page 14 and 15: Note: The bcl.bat file can be modif
Page 16 and 17: "3"3.1.5 Recommended structure of B
Page 18 and 19: GOSUB is a subroutine call and is s
Page 22 and 23: 5 StringsIn BCL strings are NULL te
Page 24 and 25: 5.6 String functionsThe BCL languag
Page 26 and 27: "-" aligns to the left side,"0" add
Page 28 and 29: 6 Execution flow control commands6.
Page 30 and 31: In that case the optional ELSE must
Page 32 and 33: The actual value of all timers (cou
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Page 36 and 37: ....1010LOCAL radiusIF _ARG_1 THEN
Page 38 and 39: Without the optional parameters, fi
Page 40 and 41: RMTHOST$( H )Returns the source IP
Page 42 and 43: ● DNS resolution failed● connec
Page 44 and 45: See also example 14.6, page 81.7.5
Page 46 and 47: The directory entry flags can be ob
Page 48 and 49: ESC [ Pn BESC [ Pn CESC [ Pn DESC [
Page 50 and 51: The READ call is non-blocking and r
Page 52 and 53: Send a 1-wire transaction S$ to the
Page 54 and 55: ' from family 0x28(DS18B20)req$=req
Page 56 and 57: FLAGS bitvalue/meaning0 0 read/writ
Page 58 and 59: 8.1.5 RTP encoder parameters FRAME_
Page 60 and 61: The same mechanism is used in writi
Page 62 and 63: 8.3 Reading audio statusVarious aud
Page 64 and 65: 20 avg buf ms RTP decoder only: ave
Page 66 and 67: INDEX Name Description Possible val
Page 68 and 69: would result in amplification above
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' initialise destinationsdst(0,0)=R
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When called with parameter E , sets
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11 SNMP Interface11.1 IntegersSNMP
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12 WEB interfaceTo interact with BC
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12.2 CGI handling in the BCLTo hand
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14 PreprocessorThe BCL language off
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13 Interpreter information13.1 Exec
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14 DebuggingThe Barix BCL interpret
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Error numberMeaning50 Length of Sea
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IF LEN(BUFFER$)=0 THEN GOTO 2WRITE
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14.7 The Wiegand reader26-bit Wiega
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GOTO 5 ' wait for more dataENDIFt=_
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15 Syntax summaryAll elements noted
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●●●●String variable declara
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4. newline (CR/LF)5. Sequence of Un
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Code example:TIMER 1,5000....5000 E
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1 Appendix C - BCL version 2In the
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CONNECTED..........................
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