• State Resolved
  • Locked Locked
  • Replies 5 replies
  • Subscribers 40 subscribers
  • Views 452 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Serial WiFi - Limits ?

bobg
Intellectual 380 points
Other Parts Discussed in Thread: CC3200

I am looking at using the CC3200 LaunchXL to replace an existing hard-wired (Tx/Rx/0v) serial link.

The existing serial link operates at 250Kbaud. Is this within the current boards capabilities ??

The existing data link is transmitting non-ASCII characters.

I will initially be using it in unsecured more.

Am I right in assuming the only additional thing I will need to do is connect a terminal to one of the devices and configure as a mDNS server? 

If I connect a terminal at a more mundane 115.2kbaud, for the mDNS server setting, will the system automatically detect when using at 250kbaud??

If auto baud rate detection employed is there a risk of initially losing the 1st character(s) - these include the header information used to synchronise the data at the receiving end.

I appreciate any confirmation or otherwise for the above. 

  • 0
    Guru 21435 points
    I am having difficulty understanding what your questions mean. Perhaps you can explain your proposed architecture in more detail.

    How are you thinking of connecting things to the CC3200?
    When you ask about 250Kbaud, are you talking about using the CC3200 UART for this?
    How are you hoping to use mDNS? (mDNS just advertises the presence of a service to bonjour/mDNS browsers).
    etc.

    Glenn.
  • 0 in reply to Glenn Vassallo
    Intellectual 380 points

    As explained in the opening request, the CC3200 LaunchXL board will be used to replace an existing hardware serial link.

    Additional info: a MicroController is attached at each end of the serial link. This is used as a bi-directional link. Currently the hard-wired serial link operates at 250kbaud.

    Thus the questions are:

    i)   will there be any problems with using a CC3200 LaunchXL board at each to replace this hardwired serial link - ie using the 20 pin connector for connecting

         the Tx, Rx, 0v lines  for  the CC3200 UART?.

    ii)  Using the supplied serial_wifi demo software what set up is required to get it operational ? The CC3200 Launchpad document appears to suggest that one

         of  the boards would need to be set up as a server, but your initial answer suggests otherwise. Thus if the same APN is used for both boards is that is all that

         is needed for the boards to find each other ??

  • 0 in reply to bobg
    Guru 21435 points
    The CC3200 has 2 UARTs with speeds of up to 3Mps. So I do not see why you could not use 1 CC3200 LaunchPad.

    More details with the datasheet - http://www.ti.com/product/CC3200/datasheet/specifications#swas031219

    Glenn.
  • 0 in reply to Glenn Vassallo
    Intellectual 380 points

    I will need two since I am replacing an existing hard-wired solution - thus I will need one of these boards at each end of the existing hard-wired link.

  • 0 in reply to bobg
    Guru 21435 points
    This will make your code simper, as you need to only worry about received or sending on each.

    Glenn.