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Darek Mhl
Darek Mhl
Associate
June 27, 2018
Question

SPWF01SA.11 start problem after save settings

  • June 27, 2018
  • 2 replies
  • 1193 views
Posted on June 27, 2018 at 20:31

Hi,

I have problem with this wifi module.

After I saved configuration settings  in module (act as wifi client) he does not starts at all.

I thought that I destroyed some internal file system structures/module config so I tried to enter into bootloader mode to overwrite firmware and factory settings but without success. It looks like that the module does not response at all.

Information about my module:

+WIND: Power On (170111-665d284-SPWF01S)

I attached boot sequences screen from logic analyzer.

Does anyone has idea how to start this module or how to make detail diagnosis of this case?

#spwf01sa #wifi-spwf01sa
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    2 replies

    Darek Mhl
    Darek MhlAuthor
    Associate
    June 28, 2018
    Posted on June 28, 2018 at 10:12

    OK, I figured out  how to enter to factory reset mode:

    WLAN_RESTORE_Pin = 1

    WLAN_PWR_EN_Pin = 0   ; disable power supply to module

    Delay(50)

    WLAN_PWR_EN_Pin = 1   ; power up module

    Delay(100)

    WLAN_BOOT = 0

    nRESET = 0

    Delay(100)

    nRESET = 1

    Elio Cometti
    Elio Cometti
    Visitor II
    June 28, 2018
    Posted on June 28, 2018 at 14:30

    Dear,

    you should see the power led (GPIO14) lit for a while when deasserting the reset line (or release the reset button on X-Nucleo), this indicates the WiFi module is booting.

    In this case please try restoring to factory settings by pulling GPIO0 High at boot.

    Regards,

    Elio

    Elio Cometti
    Elio Cometti
    Visitor II
    June 28, 2018
    Posted on June 28, 2018 at 14:35

    Hi,

    sorry, I missed your 2nd comment.

    Likely the spwf01's uart was configured with flow control and the flow control line was blocking the spwf01's uart.

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