Hello and welcome to our community! Is this your first visit?
Register
Enjoy an ad free experience by logging in. Not a member yet? Register.
Results 1 to 3 of 3
  1. #1
    New to the CF scene
    Join Date
    Sep 2012
    Posts
    2
    Thanks
    0
    Thanked 0 Times in 0 Posts

    C++ Builder and USB<->RS232

    I am trying to make an application with C++Builder which communicates with a PIC16F877A which has a RS232 interface. Unfortunately my computer only has USB ports so I have bought a USB to RS232 converter cable.
    Well I am a complete beginner to C++ Builder so really at this point I don't even know it will be possible to do this... Any help and advice would be really appreciated. ies

  • #2
    New to the CF scene
    Join Date
    Sep 2012
    Posts
    1
    Thanks
    0
    Thanked 0 Times in 0 Posts
    I see no problem you have to face in your setup. The PC SW will know nothing about nature of RS232 port it will use. It can be a real RS232 or Virtual one via USB adapter unless you are using real time bit banging with pins of RS232 port. If you are just sending data bytes there should be no difference between UART based or Virtual COM port.
    I still do not get what is the task and what is the final goal of your project?
    Is it communicating with PIC from PC via RS232?
    In this case why should it be C++ Builder and why should you write any SoftWare at all? Here is the easier way:
    http://www.xdimax.com/sub20/sub20.html
    This board is USB to RS232 (and SPI,I2C,...) adapter.
    You connect it to the PC USB port and take it's RS232 output and connect it to PIC.
    SUB-20 software has a GUI utility to send and receive data via RS232
    BTW there is a chance you will not need PIC at all. Look over SUB-20 interfaces and perhaps it will totally suite your needs.
    All of the interfaces are controlled via GUI application.

  • #3
    New Coder
    Join Date
    Jun 2011
    Location
    India
    Posts
    23
    Thanks
    1
    Thanked 1 Time in 1 Post
    The driver for the USB device should give you the API needed to talk to the serial device transparently? I mean, with the device installed, just talk in C++ as if you did have an actual rs232 port. Make your first code initialize a COM port, 1 through 4, until you get a positive response, when successful, push some data and look for it on the port or grab some data from the port.


  •  

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •