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9.0

How to read Data from USB and Serial Port

Asked by Adabara2009 in FoxPro Database, VB Database Programming, DCOM

Tags: Com Port, USB Communication, VB6, VFP

Can someone help me with code to read data from a sysmex kx-21N heamatology analyzer through the serial RS-232 port? The device send data in ACSII format through the serial port. I need to collect the string of data and extract the test value and store in my database. I am using a USB to Serial cable to connect the device to my pc
I have tried using MScomm in VFP, no data was retrieved. I now want to use VB6.0.
I also need to read barcode into a textbox of the same form from a USB barcode reader.
I am a beginner in VB.
below is my VFP code that did not work

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             **form init event code
PUBLIC gnFileHandle
 
   * You should replace 'c:\sample.hlp' with your own file name
   IF FILE('c:\FHIapps\sample.txt')  && Does file exist?
      gnErrFile = FOPEN('c:\FHIapps\sample.txt',12)  && If so, open read-write
   ELSE
      gnErrFile = FCREATE('c:\FHIapps\sample.txt')  && If not, create it
   ENDIF
 
   = FCLOSE(gnErrFile)  && Close the file
 
   STORE FOPEN('c:\FHIapps\sample.txt',1) TO gnFileHandle     && Open the file
 
**Command button click code**
PUBLIC instring as character
 
 
* Use COM1.
   thisform.testcom.CommPort = 1
   * 9600 baud, no parity, 8 data, and 1 stop bit.
   thisform.testcom.Settings = "9600,N,8,1"
   * Tell the control to read entire buffer when Input is used.
   thisform.testcom.InputLen = 0
   * Open the port.
 
   * Send the attention command to the modem.
   * Wait for data to come back to the serial port.
   DO WHILE thisform.testcom.InBufferCount = 2
     * Read the "OK" response data in the serial port.
     InString = thisform.testcom.Input
   ENDDO
   STORE instring TO thisform.text7.Value
   
   * Close the serial port.
   thisform.testcom.PortOpen = .F.

           
         

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How to read Data from USB and Serial Port

Asked by Adabara2009 in FoxPro Database, VB Database Programming, DCOM

Tags: Com Port, USB Communication, VB6, VFP

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