SPWF01SA.11 start problem after save settings

[Darek Mhl]

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

[Darek Mhl]

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]

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]

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.