Writing CR Character to port

[Kobi_K]

Hi ,

I have a problem with a Simple RS232 Port...

Is there a function that writing CR termination to a serial port ?

I know i can simply write 13 DEC to the port just wondering if theres any thing build in for the cvi....

[Wolfgang]

Hi,

if you happen to use VISA you could use viSetAttribute ( session_handle, VI_ATTR_SEND_END_EN, ) and define VI_ASRL_END_TERMCHAR; this way the terminating character is automatically appended

[Steve Dowey]

Hi,

This does a string with CR at the end pretty well in an old version of labwindows:

Fmt(send_cmd,"%s<%c%i%s\r", SENDESC, i + 1, LIMITCOM);     //this  adds 1 to i  so send_cmd starts at 1L - Type of slot request

and then:

stringsize = StringLength (send_cmd);
   
    bytes_sent = ComWrt (COMPORT, send_cmd, stringsize)

Of course this is a char string: <ESC>1L<CR>.  Have a look at the serial.prj example for single bytes.  - NB both SENDESC and LIMITCOM are #defines with SENDESC 27 and LIMITCOM  "L"

Steve