Ä Area: [FIDO] PSION echo ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
  Msg#: 11478                                        Date: 20 Aug 94  11:05
  From: Andy Parkins                                 Read: Yes    Replied: No 
    To: Neil Gove                                    Mark:                     
  Subj: Psion S3 Comms
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
 -=> Quoting Andy Parkins to Neil Gove <=-

 AP> Hello Neil,

 AP> (14 Aug 94, Neil Gove wrote this to All)...
 
 NG>        Does anyone out there have any advice regarding use of the S3 and
 NG> 3Link from OPL.  I find the comms routines described in the manual very
 NG> long winded and unsuited to my application.  I require a timeout on read
 NG> and write commands to/from the comms port, like the old Organiser II
 NG> Comms link had as standard.

 AP> I had the same problem not long ago.  I evenutally had to write a
 AP> comms module that I could loadm that behaved like the old Psion II
 AP> serial commands: 
 AP> PROC main:
 AP> global handle%
 AP> print "This is a library module"
 AP> print "and cannot be used on its"
 AP> print "own."
 AP> get
 AP> ENDP

 AP> PROC linput$:(n%,t%)
 AP> local ret%,str$(254),count%,temp$(1)
 AP> count%=1
 AP> do
 AP> ret%=ioread(handle%,addr(temp$)+1,1)
 AP> if ret%<0 :raise ret% :endif
 AP> pokeb addr(temp$),ret%
 AP> if temp$<>chr$(13) and temp$<>chr$(10)
 AP> pokeb addr(str$)+count%,asc(temp$)
 AP> pokeb addr(str$),count%
 AP> count%=count%+1
 AP> endif
 AP> rem  at 1,8
 AP> rem  print temp$;"(";asc(temp$);")"
 AP> rem  print str$;
 AP> until len(str$)=n% or count%>=254 or temp$=chr$(13)
 AP> return str$
 AP> ENDP

 AP> PROC lset:(baud%,parity%,bits%,stop%,hand%)
 AP> local nbaud%,nparity%,nhand%
 AP> if baud%=50
 AP> nbaud%=1
 AP> elseif baud%=75
 AP> nbaud%=2
 AP> elseif baud%=110
 AP> nbaud%=3
 AP> elseif baud%=150
 AP> nbaud%=5
 AP> elseif baud%=300
 AP> nbaud%=6
 AP> elseif baud%=600
 AP> nbaud%=7
 AP> elseif baud%=1200
 AP> nbaud%=8
 AP> elseif baud%=2400
 AP> nbaud%=11
 AP> elseif baud%=4800
 AP> nbaud%=13
 AP> elseif baud%=9600
 AP> nbaud%=15
 AP> endif
 AP> if parity%=0
 AP> nparity%=0
 AP> elseif parity%=1
 AP> nparity%=2
 AP> elseif parity%=2
 AP> nparity%=1
 AP> endif
 AP> if hand%=0
 AP> nhand%=4
 AP> elseif hand%=1
 AP> nhand%=7
 AP> elseif hand%=2
 AP> nhand%=0
 AP> elseif hand%=3
 AP> nhand%=3
 AP> elseif hand%=4
 AP> nhand%=12
 AP> elseif hand%=5
 AP> nhand%=15
 AP> elseif hand%=6
 AP> nhand%=8
 AP> elseif hand%=7
 AP> nhand%=11
 AP> endif
 AP> rsset:(nbaud%,nparity%,bits%,stop%,nhand%)
 AP> ENDP

 AP> PROC lprint:(str$)
 AP> local out$(254),ret%
 AP> out$=str$
 AP> ret%=iowrite(handle%,addr(out$)+1,len(out$))
 AP> if ret% :raise ret% :endif
 AP> ENDP

 AP> PROC lopen:
 AP> local ret%
 AP> ret%=ioopen(handle%,"TTY:A",$100)
 AP> if ret%
 AP> if ret%=-41
 AP> print "Comms link not plugged in"
 AP> print "or not available"
 AP> return 0
 AP> endif
 AP> raise ret%
 AP> endif
 AP> return -1
 AP> ENDP

 AP> PROC lclose:
 AP> local ret%
 AP> ret%=ioclose(handle%)
 AP> if ret% :raise ret% :endif
 AP> ENDP


 AP> PROC rsset:(baud%,parity%,data%,stop%,hand%)
 AP> LOCAL frame%,srchar%(6),dummy%,err%
 AP> frame%=data%-5
 AP> if stop%=2 :frame%=frame% or 16 :endif
 AP> if parity% :frame%=frame% or 32 :endif
 AP> srchar%(1)=baud% or (baud%*256)
 AP> srchar%(2)=frame% or (parity%*256)
 AP> srchar%(3)=(hand% and 255) or $1100
 AP> srchar%(4)=$13
 AP> err%=iow(handle%,7,srchar%(1),dummy%)
 AP> if err%<0 :raise err% :endif
 AP> ENDP

 AP> To use it you do must do the following in your program:

 AP> PROC main:
 AP> global handle%
 AP> loadm("comms")
 AP> lopen:
 AP> ENDP

 AP> Also, I've not got round to writing the timeout for lset:, it's easy
 AP> enough just do something like: 
 AP> proc timeout:(t%)
 AP> local timeout%
 AP> timeout%=datetosecs(year,month,day,hour,minute,second)+t%
 AP> do
 AP> print "Waiting for timeout...."
 AP> until datetosecs(year,month,day,hour,minute,second) > timeout%
 AP> endp

 AP> I spent a long time getting this to work a lot like the old ones so
 AP> I'd appreciate at least the credit for it in any programs you write
 AP> with it. 
 AP> Hope it's of use.

 AP> Seeya


 AP> Andy

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