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CC3135MOD: Can it support simultaneous multiple TCP server ports?

marutani syuichi
Prodigy 30 points
Part Number: CC3135MOD
Other Parts Discussed in Thread: CC3135, CC3301MOD

Tool/software:

Dear Texas Instruments support team,

I would like to confirm whether the CC3135MOD can support listening on multiple TCP server ports simultaneously, such as port 80, 81, 82, and 83.

Is it possible to configure and maintain multiple TCP connections on different ports at the same time using this module?

I would appreciate your clarification on this matter.

Best regards,

Marutani

  • +1
    Guru 80445 points

    Hi Marutani,

    Yes, this is not a issue. CC3135 supports up to 16 opened BSD sockets simultaneously. It can not only listen at multiple sockets but it can serve multiple sockets simultaneously. Let say if you want to serve two client at same port at same time. This will need 3 sockets (1 listening and two clients sockets). That means you can server 4 different ports and you will still have 4 spare sockets. All of this sockets can be TLS (max. TLS 1.2).

    But be aware that TCP port 80 is by default allocated for internal HTTP server at CC3135. To be able listen at this port from your code, you will need to disable server or change port for this internal server.

    CC3135 devices are perfectly fine. Main limitations are support TLS 1.0 for EAP security (IEEE 802.1X) only. 2nd limitation is that internal TLS stack for sockets supports TLS 1.2 only. If you need to use TLS 1.3, you will need to run TLS stack on your host MCU.

    CC3135 devices are controlled by host driver (via SPI or UART) not via AT commands. That means you will likely need port host driver to your MCU.

    Jan

  • 0 in reply to Jan D
    Prodigy 30 points

    Dear Jan,

    Thank you very much for your detailed explanation.

    We understand that the CC3135 can support multiple simultaneous connections across different ports, and that is exactly what we were hoping for.

    As a follow-up, may I ask if there are any plans for discontinuing the CC3135MOD in the near future?
    If there are any lifecycle guidelines or a general supply outlook (e.g., guaranteed years of availability), we would greatly appreciate your insight.

    Thank you again for your support.

    Best regards,
    Marutani

  • 0 in reply to marutani syuichi
    Guru 80445 points

    Hi Marutani,

    I am not TI employee, from this reason I am not able answer your questions.

    Jan

  • 0 in reply to Jan D
    Prodigy 30 points

    Dear Jan,

    I apologize for the confusion.

    Thank you for your helpful response. I will follow up with TI directly regarding the product lifecycle question.

    Best regards,
    Marutani

  • 0 in reply to marutani syuichi
    TI__Genius 14791 points

    Hi,

    There are no plans in discontinuing the CC3135 mod in compliance to TIs life cycle commitment

    https://www.ti.com/support-quality/quality-policies-procedures/product-life-cycle.html 

    However, I suggest checking out our newer CC3301MOD device if life cycle is a concern

    https://www.ti.com/product/CC3301MOD 

    Best,

    Rogelio

  • 0 in reply to RogelioD
    Prodigy 30 points

    Hi RogelioD,

    Thank you for your response and for sharing the information.

    I will take this into consideration as a reference.

    Best regards,
    Syuichi Marutani