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Studio Bluetooth

rydge
New Contributor II

Hello, 

    I purchased a CYW920719Q40-B1 eval kits for my project recently. I am trouble in that it will always generates a series of waves after downloading official samples onto the board with WICED v6.6 which is observed via spectrum analyzer. But a new bare CYW20719 won't behave like that.

For more details is following.

1. The wave only occurs at the beginning after a hard reset.

2. The wave seens a continous wave like the following figure shows.

rydge_0-1626180508851.png

3. The frequency of the wave occurs in order of 2441-->2474-->2410-->2426-->2441-->2458-->2474(MHz) which likes a Tx test or self checking mechanism of the bluetooth chip I guess. However, I can't find where to define it in the programme project.

 

What's my assumption:

    I think it is a regular action configured by the official samples. Cause I tried it in a new 20719 chip without downloading any firmwares and won't represent this problem. Besides, I have tried almost every samples in the  20719-B1_Bluetooth/apps directory. They all have the same problems.

 

What's my effort:

1. I have simplify APPLICATION_START( ) by commenting all of the codes in it, but it doesn't solve.

2. I tried comment the function application_start_internal( void ) in 20719-B1_Bluetooth/WICED/common/spar_setup.c, but it doesn't solve.

 

Could you help me to locate the key of the problem? 

Thanks

Rydge Chiu

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1 Solution
BragadeeshV
Moderator
Moderator

Hi @rydge ,

Thanks for the update. I clarified this issue with our internal team. We have stopped supporting CYW20719B1 devices. You are highly recommended to move to the latest version CYW20719B2 for development.

Regards,
Bragadeesh

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