🚀 go-pugleaf

thanx
"Colin B Maharaj" <noreply@myhost.com> schreef in bericht 
news:42a8bed6$1@newsgroups.borland.com...
> Hi N.  :)
> Serial communications uses the ASCII character set and they were probably 
> designed hand-in-hand
> the letter 'T' is at position 84 in the ASCII table and the letters 'A' to 
> 'Z'  runs from 65 to 90. I hope you get this.
>
> Now, there are what is called non printable characters or control 
> characters that were / are used primarily for Serial Communications
> These run from position 0 = NULL CHARACTER to 31.
> When doing software flow control in Serial comms you will need to design 
> your app to recognise and send these characters for flow control.
> Here is the list - I hope this helps....
>
> Dec     Hex  ASCII Description                      ^Key
>
> 0 0 NUL (null) Ctrl-@
> 1 1 SOH (start of heading) Ctrl-A
> 2 2 STX (start of text) Ctrl-B
> 3 3 ETX (end of text) Ctrl-C
> 4 4 EOT (end of transmission) Ctrl-D
> 5 5 ENQ (enquiry) Ctrl-E
> 6 6 ACK (acknowledge) Ctrl-F
> 7 7 BEL (bell) Ctrl-G
> 8 8 BS (backspace) Ctrl-H
> 9 9 HT (horizontal tab) Ctrl-I
> 10 A LF (line feed) Ctrl-J
> 11 B VT (vertical tab) Ctrl-K
> 12 C FF (form feed) Ctrl-L
> 13 D CR (carriage return) Ctrl-M
> 14 E SO (shift out) Ctrl-N
> 15 F SI (shift in) Ctrl-O
> 16 10 DLE (data link escape) Ctrl-P
> 17 11 DC1 (device control 1) XON Ctrl-Q
> 18 12 DC2 (device control 2) Ctrl-R
> 19 13 DC3 (device control 3) XOFF Ctrl-S
> 20 14 DC4 (device control 4) Ctrl-T
> 21 15 NAK (negative acknowledge) Ctrl-U
> 22 16 SYN (synchronous idle) Ctrl-V
> 23 17 ETB (end of trans. block) Ctrl-W
> 24 18 CAN (cancel) Ctrl-X
> 25 19 EM (end of medium) Ctrl-Y
> 26 1A SUB (substitute) Ctrl-Z
> 27 1B ESC (escape) Ctrl-[
> 28 1C FS (file separator) Ctrl-\
> 29 1D GS (group separator) Ctrl-]
> 30 1E RS (record separator) Ctrl-^
> 31 1F US (unit separator) Ctrl-_
>
>
>
> N. Karademir wrote:
>> Hello,
>>
>> can someone give me some info about ack/enq protocol?
>>
>> i f i am right, the rs232 device sends me ENQ, then i send ACK back, then 
>> it
>> sends data, finally i'll sent ACK.?
>>
>> How do i send ACK?
>>
>> is this just the letters "ACK" ?
>> or is it a dec / hex value i have to send?
>>
>>
>>
>> thanks
>>
>>
>> N. Karademir
>>
>>
>>