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Original question:

CC2538: CC2538 RF communication

CC2538: CC2538

Prabhu G1
Prodigy 60 points
Part Number: CC2538

Hi,

As I have mentioned earlier, I am using CC2538 for a custom protocol where I need to transfer and receive data.

Does the radio of CC2538 backoff automatically whenever the channel is busy? Or I have to do it in the application layer?

I am facing this issue of not able to broadcast the data to all devices listening in a particular channel.

If two devices are transmitting at a time, then the data of one device gets lost. 

  • 0
    TI__Guru**** 202106 points

    Hi Prabhu,

    Yes, CSMA/CA is standard in the IEEE 802.15.4-based stacks, and there are min/max backoff exponents which can be determined in mac_pib.c.  Therefore you do not have to create this functionality in your application layer.  What stack are you using to evaluate your design and can you provide a sniffer log to demonstrate the issue?

    Regards,
    Ryan