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WICED Studio Bluetooth

KeTa_1341526
New Contributor II

Hello,

I am trying Deep sleep mode with the new FW (v1.2.27) of CYBT-353027-02.
https://www.cypress.com/documentation/software-and-drivers/ez-serial-ez-ble-module-firmware-platform

The settings are as follows.

SSLP$,L=02
.CYSPPSP$,P=1 (Default)
* I use CYBT-353027-02 EVB.

When entering deep sleep mode, LP_Mode pin is set to High.
(The current value of Module is several uA, so I think it is Deep Sleep.)

However, returning this LP_MODE pin to Low does not return the Module.
(The condition for returning is determined by issuing a BOOT Event from Module)

On the other hand, a similar test was performed with CYBT-343026-01 EVB.
(The LP_MODE pin is set to Active Low.)

In this Module, when LP_MODE is changed to Low, a Boot Event is issued and the original Active state is restored.

Why doesn't CYBT-353027-02 EVB return to active mode?

Best regards,
TK

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2 Replies
SheetalJ
Moderator
Moderator

Hi TK,

We will check and get back to you soon.

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KeTa_1341526
New Contributor II

There is one more thing I found out.

I am checking on the evaluation board of CYBT-353027-02.

When releasing from Deep Sleep (HIDOFF) (transitioning LP_MODE pin from High to Low), the Boot Event was not issued from the Module.

In this state, pressing User Switch (SW3) issued a Boot Event.

This SW3 is connected to P9 (GPIO_6) of Module.

In EZ-Serial F / W, it is assigned to ADC0.

This pin looks like a wakeup.

My hope is that the EZ-Serial F/W will restart automatically even if there is no input to this P9 when it is released from Deep-sleep.

 

Best regards,

TK

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