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CC3351: Want to reduce WiFi data transfer cycle time

Koichiro Tashiro
Mastermind 22935 points
Part Number: CC3351
Other Parts Discussed in Thread: LP-AM243, CC3301

Tool/software:

Hi,

My customer is evaluating CC3351+LP-AM243.
They wants to reduce WiFi communication cycles time.
Please see attached excel file for detailed requirements and their test conditions.
20250509_E2E.xlsx

Q1) Do you have any suggestion to reduce response time?
Q2) The customer found IRQ_WL_3V3 interrupts are generated from CC3351 to AM243x.
What is the trigger condition of the interrupt?

Please let me know if you need more information from the customer.

Thanks and regards,
Koichiro Tashiro

  • +1
    TI__Genius 14601 points

    Hi Koichiro,

    From the Excel sheet of sending 200 bytes to and from system a and b 4 times is quite impossible. I would ask your customer on how realistic these requirements are.

    1.) Theres a lot of factors that play into wifi reception that we cannot control, however, we can improve the response from host to controller such as making sure Low Power mode is not active. Increasing radio power to guarantee signal strength. Using SDIO instead of SPI. Make sure antennas are pointed at each other. 

    2.) The IRQ_WL interrupt is set by the CC3301 when it needs attention from the host driver. Exact reasons on when this IRQ is set can be found in fw_event_handle.c

    Best,

    Rogelio