Level Extreme platform
Subscription
Corporate profile
Products & Services
Support
Legal
Français
MSCOMM32.OCX
Message
 
To
21/03/1997 11:10:57
General information
Forum:
Visual FoxPro
Category:
Third party products
Title:
Miscellaneous
Thread ID:
00024918
Message ID:
00025345
Views:
36
Per,

>I'm using driven comm. if I use Inputlen=1 and
>RThreshold=1

Ok, I'm assuming your code is located in the OnComm event? If not, then
what I'm going to say here probably won't work.

>enchr=' '
>IF This.CommEvent = 2
> enchr=This.Input

What this line is doing is taking ALL the data currently in the input
buffer and placing it int he enchr variable.

> ?enchr

Looks like you are printing the variable for debugging purposes?

> hentprog=hentprog+enchr

Adding what was just placed in the buffer to another variable.

>IF enchr=CHR(03) && end of telegram hit

Ok, this code probably won't work like you want it to.
1. enchr can be a STRING that is more than one character long.
2. You need to look at RIGHT(enchr) to see if that is CHR(03).

> run the program
> Is it possible for a new OnComm to trigger here if
> there is char in the inputbuffer??
>IOW when my code is running?
>ENDIF
>ENDIF

Also, do you have to acknowledge that you have received a telegram before
another one is sent? I have some code I've worked on that works this way.

1. Outside machine sends 'telegram'. Leads telegram with 'special' char.
2. Local machine reads all data from input buffer until:
a. It receives an
- OR -
b. It times out.
3. If Local machine gets 'telegram' ok, then it sends an back and processes the 'telegram', and waits for another 'telegram', otherwise, it sends a and waits for another 'telegram'.

Is this how your system needs to work?

Later,
Jim Huenergardt
AXIO
Previous
Next
Reply
Map
View

Click here to load this message in the networking platform