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Wireless

l4m4l
New Contributor II

Hello,

I am trying to configure the CYBT-343026-01 BLE module for CYSPP mode. I am experiencing what I believe is unexpected behaviour in peripheral mode.

My setup is:

CYBT-343026-01, CYSPP (pin 22) => GND, LP_MODE (pin 4) => VDD.

On initial bootup, the module behaves as expected - passing all data transmitted to characteristic handle 0x11 to my serial terminal (see below)

l4m4l_0-1625284070722.png

Once I disconnect this terminal, the module re-enters API mode (see below)

l4m4l_1-1625284122371.png

This is happening even though I believe have disabled API mode in hardware by grounding the CYSPP pin. If I reconnect to the module, all data is now transmitted through the API mode UART interface (all data now encapsulated with "@E,...,D=data etc) which I would ideally like to avoid.

Would anyone please be able to let me know what is incorrect with my setup or thinking?

Any help would be greatly appreciated. Thank-you.

 

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1 Solution
Owen_Zhang123
Moderator
Moderator

Please try to use the latest FW which should be 1.2.29 and see if the problem still happens.

https://www.cypress.com/documentation/software-and-drivers/ez-serial-ez-ble-module-firmware-platform....

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